1fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com/* 2fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com * Copyright 2012 Google Inc. 3fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com * 4fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com * Use of this source code is governed by a BSD-style license that can be 5fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com * found in the LICENSE file. 6fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com */ 7b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com#include "Simplify.h" 8fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 9fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com#undef SkASSERT 10fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com#define SkASSERT(cond) while (!(cond)) { sk_throw(); } 11fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 1215fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com// Terminology: 1315fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com// A Path contains one of more Contours 1415fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com// A Contour is made up of Segment array 15b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com// A Segment is described by a Verb and a Point array with 2, 3, or 4 points 16b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com// A Verb is one of Line, Quad(ratic), or Cubic 1715fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com// A Segment contains a Span array 1815fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com// A Span is describes a portion of a Segment using starting and ending T 1915fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com// T values range from 0 to 1, where 0 is the first Point in the Segment 2047580694fbe974a065caf7c39c3d2075708c2018caryclark@google.com// An Edge is a Segment generated from a Span 2115fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com 22fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com// FIXME: remove once debugging is complete 2347580694fbe974a065caf7c39c3d2075708c2018caryclark@google.com#ifdef SK_DEBUG 2447580694fbe974a065caf7c39c3d2075708c2018caryclark@google.comint gDebugMaxWindSum = SK_MaxS32; 2547580694fbe974a065caf7c39c3d2075708c2018caryclark@google.comint gDebugMaxWindValue = SK_MaxS32; 2647580694fbe974a065caf7c39c3d2075708c2018caryclark@google.com#endif 2747580694fbe974a065caf7c39c3d2075708c2018caryclark@google.com 28f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com#define PIN_ADD_T 0 290b7da433fe0eaa2833d1b2900715b013b36d93dacaryclark@google.com#define TRY_ROTATE 1 308f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com#define ONE_PASS_COINCIDENCE_CHECK 0 3173ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com#define APPROXIMATE_CUBICS 1 32d4c8e1e035bc2edb6caf2c9eac71ef918e60b80bcaryclark@google.com#define COMPACT_DEBUG_SORT 0 33a461ff0866526bc51dbd4c4f9f066a727ec21510caryclark@google.com 3447580694fbe974a065caf7c39c3d2075708c2018caryclark@google.com#define DEBUG_UNUSED 0 // set to expose unused functions 3545a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com 3631143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com#if FORCE_RELEASE || defined SK_RELEASE 37fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 3847580694fbe974a065caf7c39c3d2075708c2018caryclark@google.comconst bool gRunTestsInOneThread = false; 39fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 40beda389e646d6be3cfef853584a78ca8ba39d0fccaryclark@google.com#define DEBUG_ACTIVE_OP 0 4147580694fbe974a065caf7c39c3d2075708c2018caryclark@google.com#define DEBUG_ACTIVE_SPANS 0 424eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com#define DEBUG_ACTIVE_SPANS_SHORT_FORM 0 43fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com#define DEBUG_ADD_INTERSECTING_TS 0 4447580694fbe974a065caf7c39c3d2075708c2018caryclark@google.com#define DEBUG_ADD_T_PAIR 0 45c899ad9c7fa28234d99479ab09afb6866bbd8dc3caryclark@google.com#define DEBUG_ANGLE 0 467ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com#define DEBUG_AS_C_CODE 1 47e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com#define DEBUG_ASSEMBLE 0 4847580694fbe974a065caf7c39c3d2075708c2018caryclark@google.com#define DEBUG_CONCIDENT 0 498dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com#define DEBUG_CROSS 0 50e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com#define DEBUG_FLOW 0 5147580694fbe974a065caf7c39c3d2075708c2018caryclark@google.com#define DEBUG_MARK_DONE 0 52f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com#define DEBUG_PATH_CONSTRUCTION 0 53729e1c46cea63dfaa6e4a05608b8f3be41e19dcecaryclark@google.com#define DEBUG_SHOW_WINDING 0 54c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com#define DEBUG_SORT 0 555e0500fb5f17fe14db42fc3e0aad08e6b41ccc5fcaryclark@google.com#define DEBUG_SWAP_TOP 0 568f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com#define DEBUG_UNSORTABLE 0 57afe56de6361a81eef537ddd8f6d5626c8546d4c7caryclark@google.com#define DEBUG_WIND_BUMP 0 588dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com#define DEBUG_WINDING 0 598f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com#define DEBUG_WINDING_AT_T 0 60fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 61fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com#else 62fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 6347580694fbe974a065caf7c39c3d2075708c2018caryclark@google.comconst bool gRunTestsInOneThread = true; 64fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 65beda389e646d6be3cfef853584a78ca8ba39d0fccaryclark@google.com#define DEBUG_ACTIVE_OP 1 66c91dfe417a51f73c28ecf2708df1e0bee942c6eacaryclark@google.com#define DEBUG_ACTIVE_SPANS 1 671304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com#define DEBUG_ACTIVE_SPANS_SHORT_FORM 0 686aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com#define DEBUG_ADD_INTERSECTING_TS 1 696aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com#define DEBUG_ADD_T_PAIR 1 703350c3c68ab75cd08721da3a938b8d2b10096d70caryclark@google.com#define DEBUG_ANGLE 1 714aaaaeace7e617ddc473645756fb7c20790bc270caryclark@google.com#define DEBUG_AS_C_CODE 1 72e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com#define DEBUG_ASSEMBLE 1 733350c3c68ab75cd08721da3a938b8d2b10096d70caryclark@google.com#define DEBUG_CONCIDENT 1 74534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com#define DEBUG_CROSS 0 75e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com#define DEBUG_FLOW 1 763350c3c68ab75cd08721da3a938b8d2b10096d70caryclark@google.com#define DEBUG_MARK_DONE 1 7765f9f0a1664a9cb38157ccfbcc3e0e936af0a58ecaryclark@google.com#define DEBUG_PATH_CONSTRUCTION 1 78729e1c46cea63dfaa6e4a05608b8f3be41e19dcecaryclark@google.com#define DEBUG_SHOW_WINDING 0 7947580694fbe974a065caf7c39c3d2075708c2018caryclark@google.com#define DEBUG_SORT 1 8047d73daa7a971e7eee5822def7922f7d43b2dc47caryclark@google.com#define DEBUG_SWAP_TOP 1 818f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com#define DEBUG_UNSORTABLE 1 82afe56de6361a81eef537ddd8f6d5626c8546d4c7caryclark@google.com#define DEBUG_WIND_BUMP 0 8347580694fbe974a065caf7c39c3d2075708c2018caryclark@google.com#define DEBUG_WINDING 1 848f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com#define DEBUG_WINDING_AT_T 1 85fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 86fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com#endif 87fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 88beda389e646d6be3cfef853584a78ca8ba39d0fccaryclark@google.com#define DEBUG_DUMP (DEBUG_ACTIVE_OP | DEBUG_ACTIVE_SPANS | DEBUG_CONCIDENT | DEBUG_SORT | \ 89beda389e646d6be3cfef853584a78ca8ba39d0fccaryclark@google.com DEBUG_PATH_CONSTRUCTION) 90027de226c144d9e6b7a76acb2e904952b5620a5ecaryclark@google.com 91d4c8e1e035bc2edb6caf2c9eac71ef918e60b80bcaryclark@google.com#if DEBUG_AS_C_CODE 92d4c8e1e035bc2edb6caf2c9eac71ef918e60b80bcaryclark@google.com#define CUBIC_DEBUG_STR "{{%1.17g,%1.17g}, {%1.17g,%1.17g}, {%1.17g,%1.17g}, {%1.17g,%1.17g}}" 93d4c8e1e035bc2edb6caf2c9eac71ef918e60b80bcaryclark@google.com#define QUAD_DEBUG_STR "{{%1.17g,%1.17g}, {%1.17g,%1.17g}, {%1.17g,%1.17g}}" 94d4c8e1e035bc2edb6caf2c9eac71ef918e60b80bcaryclark@google.com#define LINE_DEBUG_STR "{{%1.17g,%1.17g}, {%1.17g,%1.17g}}" 95d4c8e1e035bc2edb6caf2c9eac71ef918e60b80bcaryclark@google.com#define PT_DEBUG_STR "{{%1.17g,%1.17g}}" 96d4c8e1e035bc2edb6caf2c9eac71ef918e60b80bcaryclark@google.com#else 97d4c8e1e035bc2edb6caf2c9eac71ef918e60b80bcaryclark@google.com#define CUBIC_DEBUG_STR "(%1.9g,%1.9g %1.9g,%1.9g %1.9g,%1.9g %1.9g,%1.9g)" 98d4c8e1e035bc2edb6caf2c9eac71ef918e60b80bcaryclark@google.com#define QUAD_DEBUG_STR "(%1.9g,%1.9g %1.9g,%1.9g %1.9g,%1.9g)" 99d4c8e1e035bc2edb6caf2c9eac71ef918e60b80bcaryclark@google.com#define LINE_DEBUG_STR "(%1.9g,%1.9g %1.9g,%1.9g)" 100d4c8e1e035bc2edb6caf2c9eac71ef918e60b80bcaryclark@google.com#define PT_DEBUG_STR "(%1.9g,%1.9g)" 101d4c8e1e035bc2edb6caf2c9eac71ef918e60b80bcaryclark@google.com#endif 102d4c8e1e035bc2edb6caf2c9eac71ef918e60b80bcaryclark@google.com#define T_DEBUG_STR(t, n) #t "[" #n "]=%1.9g" 103d4c8e1e035bc2edb6caf2c9eac71ef918e60b80bcaryclark@google.com#define TX_DEBUG_STR(t) #t "[%d]=%1.9g" 104d4c8e1e035bc2edb6caf2c9eac71ef918e60b80bcaryclark@google.com#define CUBIC_DEBUG_DATA(c) c[0].fX, c[0].fY, c[1].fX, c[1].fY, c[2].fX, c[2].fY, c[3].fX, c[3].fY 105d4c8e1e035bc2edb6caf2c9eac71ef918e60b80bcaryclark@google.com#define QUAD_DEBUG_DATA(q) q[0].fX, q[0].fY, q[1].fX, q[1].fY, q[2].fX, q[2].fY 106d4c8e1e035bc2edb6caf2c9eac71ef918e60b80bcaryclark@google.com#define LINE_DEBUG_DATA(l) l[0].fX, l[0].fY, l[1].fX, l[1].fY 107d4c8e1e035bc2edb6caf2c9eac71ef918e60b80bcaryclark@google.com#define PT_DEBUG_DATA(i, n) i.fPt[n].x, i.fPt[n].y 108d4c8e1e035bc2edb6caf2c9eac71ef918e60b80bcaryclark@google.com 109fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com#if DEBUG_DUMP 110fa0588ff672564af1c235a63589573829035a60bcaryclark@google.comstatic const char* kLVerbStr[] = {"", "line", "quad", "cubic"}; 11165f9f0a1664a9cb38157ccfbcc3e0e936af0a58ecaryclark@google.com// static const char* kUVerbStr[] = {"", "Line", "Quad", "Cubic"}; 112fa0588ff672564af1c235a63589573829035a60bcaryclark@google.comstatic int gContourID; 113fa0588ff672564af1c235a63589573829035a60bcaryclark@google.comstatic int gSegmentID; 114fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com#endif 115fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 1161304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com#if DEBUG_SORT || DEBUG_SWAP_TOP 1174aaaaeace7e617ddc473645756fb7c20790bc270caryclark@google.comstatic int gDebugSortCountDefault = SK_MaxS32; 118c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.comstatic int gDebugSortCount; 119c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com#endif 120c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com 1215e0500fb5f17fe14db42fc3e0aad08e6b41ccc5fcaryclark@google.com#if DEBUG_ACTIVE_OP 1225e0500fb5f17fe14db42fc3e0aad08e6b41ccc5fcaryclark@google.comstatic const char* kShapeOpStr[] = {"diff", "sect", "union", "xor"}; 1235e0500fb5f17fe14db42fc3e0aad08e6b41ccc5fcaryclark@google.com#endif 1245e0500fb5f17fe14db42fc3e0aad08e6b41ccc5fcaryclark@google.com 1258dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com#ifndef DEBUG_TEST 1268dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com#define DEBUG_TEST 0 1278dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com#endif 1288dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com 12932546db1494a6c6433a7919844133a6ff5b5c7b2caryclark@google.com#define MAKE_CONST_LINE(line, pts) \ 13032546db1494a6c6433a7919844133a6ff5b5c7b2caryclark@google.com const _Line line = {{pts[0].fX, pts[0].fY}, {pts[1].fX, pts[1].fY}} 13132546db1494a6c6433a7919844133a6ff5b5c7b2caryclark@google.com#define MAKE_CONST_QUAD(quad, pts) \ 13232546db1494a6c6433a7919844133a6ff5b5c7b2caryclark@google.com const Quadratic quad = {{pts[0].fX, pts[0].fY}, {pts[1].fX, pts[1].fY}, \ 13332546db1494a6c6433a7919844133a6ff5b5c7b2caryclark@google.com {pts[2].fX, pts[2].fY}} 13432546db1494a6c6433a7919844133a6ff5b5c7b2caryclark@google.com#define MAKE_CONST_CUBIC(cubic, pts) \ 13532546db1494a6c6433a7919844133a6ff5b5c7b2caryclark@google.com const Cubic cubic = {{pts[0].fX, pts[0].fY}, {pts[1].fX, pts[1].fY}, \ 13632546db1494a6c6433a7919844133a6ff5b5c7b2caryclark@google.com {pts[2].fX, pts[2].fY}, {pts[3].fX, pts[3].fY}} 13732546db1494a6c6433a7919844133a6ff5b5c7b2caryclark@google.com 138fa0588ff672564af1c235a63589573829035a60bcaryclark@google.comstatic int LineIntersect(const SkPoint a[2], const SkPoint b[2], 139fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com Intersections& intersections) { 14032546db1494a6c6433a7919844133a6ff5b5c7b2caryclark@google.com MAKE_CONST_LINE(aLine, a); 14132546db1494a6c6433a7919844133a6ff5b5c7b2caryclark@google.com MAKE_CONST_LINE(bLine, b); 14245a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com return intersect(aLine, bLine, intersections); 143fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com} 144fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 145fa0588ff672564af1c235a63589573829035a60bcaryclark@google.comstatic int QuadLineIntersect(const SkPoint a[3], const SkPoint b[2], 146fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com Intersections& intersections) { 14732546db1494a6c6433a7919844133a6ff5b5c7b2caryclark@google.com MAKE_CONST_QUAD(aQuad, a); 14832546db1494a6c6433a7919844133a6ff5b5c7b2caryclark@google.com MAKE_CONST_LINE(bLine, b); 1493350c3c68ab75cd08721da3a938b8d2b10096d70caryclark@google.com return intersect(aQuad, bLine, intersections); 150fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com} 151fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 15232546db1494a6c6433a7919844133a6ff5b5c7b2caryclark@google.comstatic int CubicLineIntersect(const SkPoint a[4], const SkPoint b[2], 153fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com Intersections& intersections) { 15432546db1494a6c6433a7919844133a6ff5b5c7b2caryclark@google.com MAKE_CONST_CUBIC(aCubic, a); 15532546db1494a6c6433a7919844133a6ff5b5c7b2caryclark@google.com MAKE_CONST_LINE(bLine, b); 15673ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com return intersect(aCubic, bLine, intersections); 157fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com} 158fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 159fa0588ff672564af1c235a63589573829035a60bcaryclark@google.comstatic int QuadIntersect(const SkPoint a[3], const SkPoint b[3], 160fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com Intersections& intersections) { 16132546db1494a6c6433a7919844133a6ff5b5c7b2caryclark@google.com MAKE_CONST_QUAD(aQuad, a); 16232546db1494a6c6433a7919844133a6ff5b5c7b2caryclark@google.com MAKE_CONST_QUAD(bQuad, b); 163235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com#define TRY_QUARTIC_SOLUTION 1 164235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com#if TRY_QUARTIC_SOLUTION 165235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com intersect2(aQuad, bQuad, intersections); 166235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com#else 167fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com intersect(aQuad, bQuad, intersections); 168235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com#endif 16945a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com return intersections.fUsed; 170fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com} 171fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 17273ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com#if APPROXIMATE_CUBICS 17373ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.comstatic int CubicQuadIntersect(const SkPoint a[4], const SkPoint b[3], 174fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com Intersections& intersections) { 17532546db1494a6c6433a7919844133a6ff5b5c7b2caryclark@google.com MAKE_CONST_CUBIC(aCubic, a); 17673ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com MAKE_CONST_QUAD(bQuad, b); 17773ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com return intersect(aCubic, bQuad, intersections); 17873ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com} 17973ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com#endif 18073ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com 18173ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.comstatic int CubicIntersect(const SkPoint a[4], const SkPoint b[4], Intersections& intersections) { 18273ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com MAKE_CONST_CUBIC(aCubic, a); 18332546db1494a6c6433a7919844133a6ff5b5c7b2caryclark@google.com MAKE_CONST_CUBIC(bCubic, b); 18473ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com#if APPROXIMATE_CUBICS 18545a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com intersect3(aCubic, bCubic, intersections); 18673ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com#else 187fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com intersect(aCubic, bCubic, intersections); 18873ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com#endif 18945a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com return intersections.fUsed; 190fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com} 191fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 192c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.comstatic int CubicIntersect(const SkPoint a[4], Intersections& intersections) { 193c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com MAKE_CONST_CUBIC(aCubic, a); 194c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com return intersect(aCubic, intersections); 195c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com} 196c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com 197fa0588ff672564af1c235a63589573829035a60bcaryclark@google.comstatic int HLineIntersect(const SkPoint a[2], SkScalar left, SkScalar right, 198fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com SkScalar y, bool flipped, Intersections& intersections) { 19932546db1494a6c6433a7919844133a6ff5b5c7b2caryclark@google.com MAKE_CONST_LINE(aLine, a); 200fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com return horizontalIntersect(aLine, left, right, y, flipped, intersections); 201fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com} 202fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 203fa0588ff672564af1c235a63589573829035a60bcaryclark@google.comstatic int HQuadIntersect(const SkPoint a[3], SkScalar left, SkScalar right, 204fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com SkScalar y, bool flipped, Intersections& intersections) { 20532546db1494a6c6433a7919844133a6ff5b5c7b2caryclark@google.com MAKE_CONST_QUAD(aQuad, a); 206fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com return horizontalIntersect(aQuad, left, right, y, flipped, intersections); 207fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com} 208fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 209fa0588ff672564af1c235a63589573829035a60bcaryclark@google.comstatic int HCubicIntersect(const SkPoint a[4], SkScalar left, SkScalar right, 210fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com SkScalar y, bool flipped, Intersections& intersections) { 21132546db1494a6c6433a7919844133a6ff5b5c7b2caryclark@google.com MAKE_CONST_CUBIC(aCubic, a); 212fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com return horizontalIntersect(aCubic, left, right, y, flipped, intersections); 213fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com} 214fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 215e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.comstatic int (* const HSegmentIntersect[])(const SkPoint [], SkScalar , 216e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com SkScalar , SkScalar , bool , Intersections& ) = { 217e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com NULL, 218e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com HLineIntersect, 219e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com HQuadIntersect, 220e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com HCubicIntersect 221e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com}; 222e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com 2238dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.comstatic int VLineIntersect(const SkPoint a[2], SkScalar top, SkScalar bottom, 2248dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com SkScalar x, bool flipped, Intersections& intersections) { 22532546db1494a6c6433a7919844133a6ff5b5c7b2caryclark@google.com MAKE_CONST_LINE(aLine, a); 2268dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com return verticalIntersect(aLine, top, bottom, x, flipped, intersections); 2278dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com} 2288dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com 2298dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.comstatic int VQuadIntersect(const SkPoint a[3], SkScalar top, SkScalar bottom, 2308dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com SkScalar x, bool flipped, Intersections& intersections) { 23132546db1494a6c6433a7919844133a6ff5b5c7b2caryclark@google.com MAKE_CONST_QUAD(aQuad, a); 2328dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com return verticalIntersect(aQuad, top, bottom, x, flipped, intersections); 2338dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com} 2348dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com 2358dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.comstatic int VCubicIntersect(const SkPoint a[4], SkScalar top, SkScalar bottom, 2368dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com SkScalar x, bool flipped, Intersections& intersections) { 23732546db1494a6c6433a7919844133a6ff5b5c7b2caryclark@google.com MAKE_CONST_CUBIC(aCubic, a); 2388dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com return verticalIntersect(aCubic, top, bottom, x, flipped, intersections); 239fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com} 240fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 2418dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.comstatic int (* const VSegmentIntersect[])(const SkPoint [], SkScalar , 2428dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com SkScalar , SkScalar , bool , Intersections& ) = { 2438dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com NULL, 2448dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com VLineIntersect, 2458dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com VQuadIntersect, 2468dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com VCubicIntersect 2478dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com}; 2488dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com 249fa0588ff672564af1c235a63589573829035a60bcaryclark@google.comstatic void LineXYAtT(const SkPoint a[2], double t, SkPoint* out) { 25032546db1494a6c6433a7919844133a6ff5b5c7b2caryclark@google.com MAKE_CONST_LINE(line, a); 251fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com double x, y; 252fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com xy_at_t(line, t, x, y); 253fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com out->fX = SkDoubleToScalar(x); 254fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com out->fY = SkDoubleToScalar(y); 255fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com} 256fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 257f9502d7dfad5b361a3cdaa42eb75b593c95f79d8caryclark@google.comstatic void LineXYAtT(const SkPoint a[2], double t, _Point* out) { 258f9502d7dfad5b361a3cdaa42eb75b593c95f79d8caryclark@google.com MAKE_CONST_LINE(line, a); 259f9502d7dfad5b361a3cdaa42eb75b593c95f79d8caryclark@google.com xy_at_t(line, t, out->x, out->y); 260f9502d7dfad5b361a3cdaa42eb75b593c95f79d8caryclark@google.com} 261f9502d7dfad5b361a3cdaa42eb75b593c95f79d8caryclark@google.com 262fa0588ff672564af1c235a63589573829035a60bcaryclark@google.comstatic void QuadXYAtT(const SkPoint a[3], double t, SkPoint* out) { 26332546db1494a6c6433a7919844133a6ff5b5c7b2caryclark@google.com MAKE_CONST_QUAD(quad, a); 264fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com double x, y; 265fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com xy_at_t(quad, t, x, y); 266fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com out->fX = SkDoubleToScalar(x); 267fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com out->fY = SkDoubleToScalar(y); 268fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com} 269fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 2706aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.comstatic void QuadXYAtT(const SkPoint a[3], double t, _Point* out) { 2716aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com MAKE_CONST_QUAD(quad, a); 2726aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com xy_at_t(quad, t, out->x, out->y); 2736aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com} 2746aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com 275fa0588ff672564af1c235a63589573829035a60bcaryclark@google.comstatic void CubicXYAtT(const SkPoint a[4], double t, SkPoint* out) { 27632546db1494a6c6433a7919844133a6ff5b5c7b2caryclark@google.com MAKE_CONST_CUBIC(cubic, a); 277fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com double x, y; 278fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com xy_at_t(cubic, t, x, y); 279fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com out->fX = SkDoubleToScalar(x); 280fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com out->fY = SkDoubleToScalar(y); 281fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com} 282fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 283f9502d7dfad5b361a3cdaa42eb75b593c95f79d8caryclark@google.comstatic void CubicXYAtT(const SkPoint a[4], double t, _Point* out) { 284f9502d7dfad5b361a3cdaa42eb75b593c95f79d8caryclark@google.com MAKE_CONST_CUBIC(cubic, a); 285f9502d7dfad5b361a3cdaa42eb75b593c95f79d8caryclark@google.com xy_at_t(cubic, t, out->x, out->y); 286f9502d7dfad5b361a3cdaa42eb75b593c95f79d8caryclark@google.com} 287f9502d7dfad5b361a3cdaa42eb75b593c95f79d8caryclark@google.com 288fa0588ff672564af1c235a63589573829035a60bcaryclark@google.comstatic void (* const SegmentXYAtT[])(const SkPoint [], double , SkPoint* ) = { 289fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com NULL, 290fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com LineXYAtT, 291fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com QuadXYAtT, 292fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com CubicXYAtT 293fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com}; 294fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 295f9502d7dfad5b361a3cdaa42eb75b593c95f79d8caryclark@google.comstatic void (* const SegmentXYAtT2[])(const SkPoint [], double , _Point* ) = { 296f9502d7dfad5b361a3cdaa42eb75b593c95f79d8caryclark@google.com NULL, 297f9502d7dfad5b361a3cdaa42eb75b593c95f79d8caryclark@google.com LineXYAtT, 298f9502d7dfad5b361a3cdaa42eb75b593c95f79d8caryclark@google.com QuadXYAtT, 299f9502d7dfad5b361a3cdaa42eb75b593c95f79d8caryclark@google.com CubicXYAtT 300f9502d7dfad5b361a3cdaa42eb75b593c95f79d8caryclark@google.com}; 301f9502d7dfad5b361a3cdaa42eb75b593c95f79d8caryclark@google.com 302fa0588ff672564af1c235a63589573829035a60bcaryclark@google.comstatic SkScalar LineXAtT(const SkPoint a[2], double t) { 30332546db1494a6c6433a7919844133a6ff5b5c7b2caryclark@google.com MAKE_CONST_LINE(aLine, a); 304fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com double x; 305fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com xy_at_t(aLine, t, x, *(double*) 0); 306fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com return SkDoubleToScalar(x); 307fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com} 308fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 309fa0588ff672564af1c235a63589573829035a60bcaryclark@google.comstatic SkScalar QuadXAtT(const SkPoint a[3], double t) { 31032546db1494a6c6433a7919844133a6ff5b5c7b2caryclark@google.com MAKE_CONST_QUAD(quad, a); 311fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com double x; 312fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com xy_at_t(quad, t, x, *(double*) 0); 313fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com return SkDoubleToScalar(x); 314fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com} 315fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 316fa0588ff672564af1c235a63589573829035a60bcaryclark@google.comstatic SkScalar CubicXAtT(const SkPoint a[4], double t) { 31732546db1494a6c6433a7919844133a6ff5b5c7b2caryclark@google.com MAKE_CONST_CUBIC(cubic, a); 318fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com double x; 319fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com xy_at_t(cubic, t, x, *(double*) 0); 320fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com return SkDoubleToScalar(x); 321fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com} 322fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 323fa0588ff672564af1c235a63589573829035a60bcaryclark@google.comstatic SkScalar (* const SegmentXAtT[])(const SkPoint [], double ) = { 324fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com NULL, 325fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com LineXAtT, 326fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com QuadXAtT, 327fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com CubicXAtT 328fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com}; 329fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 330fa0588ff672564af1c235a63589573829035a60bcaryclark@google.comstatic SkScalar LineYAtT(const SkPoint a[2], double t) { 33132546db1494a6c6433a7919844133a6ff5b5c7b2caryclark@google.com MAKE_CONST_LINE(aLine, a); 332fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com double y; 333fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com xy_at_t(aLine, t, *(double*) 0, y); 334fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com return SkDoubleToScalar(y); 335fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com} 336fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 337fa0588ff672564af1c235a63589573829035a60bcaryclark@google.comstatic SkScalar QuadYAtT(const SkPoint a[3], double t) { 33832546db1494a6c6433a7919844133a6ff5b5c7b2caryclark@google.com MAKE_CONST_QUAD(quad, a); 339fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com double y; 340fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com xy_at_t(quad, t, *(double*) 0, y); 341fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com return SkDoubleToScalar(y); 342fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com} 343fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 344fa0588ff672564af1c235a63589573829035a60bcaryclark@google.comstatic SkScalar CubicYAtT(const SkPoint a[4], double t) { 34532546db1494a6c6433a7919844133a6ff5b5c7b2caryclark@google.com MAKE_CONST_CUBIC(cubic, a); 346fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com double y; 347fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com xy_at_t(cubic, t, *(double*) 0, y); 348fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com return SkDoubleToScalar(y); 349fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com} 350fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 351fa0588ff672564af1c235a63589573829035a60bcaryclark@google.comstatic SkScalar (* const SegmentYAtT[])(const SkPoint [], double ) = { 352fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com NULL, 353fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com LineYAtT, 354fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com QuadYAtT, 355fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com CubicYAtT 356fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com}; 357fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 3588dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.comstatic SkScalar LineDXAtT(const SkPoint a[2], double ) { 3598dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com return a[1].fX - a[0].fX; 3608dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com} 3618dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com 3628dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.comstatic SkScalar QuadDXAtT(const SkPoint a[3], double t) { 36332546db1494a6c6433a7919844133a6ff5b5c7b2caryclark@google.com MAKE_CONST_QUAD(quad, a); 36405c4bad470722bc4e5e6ae3d79aa8bcf9e732f06caryclark@google.com double x = dx_at_t(quad, t); 3658dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com return SkDoubleToScalar(x); 3668dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com} 3678dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com 3688dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.comstatic SkScalar CubicDXAtT(const SkPoint a[4], double t) { 36932546db1494a6c6433a7919844133a6ff5b5c7b2caryclark@google.com MAKE_CONST_CUBIC(cubic, a); 37005c4bad470722bc4e5e6ae3d79aa8bcf9e732f06caryclark@google.com double x = dx_at_t(cubic, t); 3718dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com return SkDoubleToScalar(x); 3728dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com} 3738dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com 3748dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.comstatic SkScalar (* const SegmentDXAtT[])(const SkPoint [], double ) = { 3758dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com NULL, 3768dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com LineDXAtT, 3778dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com QuadDXAtT, 3788dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com CubicDXAtT 3798dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com}; 3808dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com 381e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.comstatic SkScalar LineDYAtT(const SkPoint a[2], double ) { 382e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com return a[1].fY - a[0].fY; 383e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com} 384e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com 385e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.comstatic SkScalar QuadDYAtT(const SkPoint a[3], double t) { 386e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com MAKE_CONST_QUAD(quad, a); 38705c4bad470722bc4e5e6ae3d79aa8bcf9e732f06caryclark@google.com double y = dy_at_t(quad, t); 388e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com return SkDoubleToScalar(y); 389e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com} 390e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com 391e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.comstatic SkScalar CubicDYAtT(const SkPoint a[4], double t) { 392e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com MAKE_CONST_CUBIC(cubic, a); 39305c4bad470722bc4e5e6ae3d79aa8bcf9e732f06caryclark@google.com double y = dy_at_t(cubic, t); 394e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com return SkDoubleToScalar(y); 395e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com} 396e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com 397e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.comstatic SkScalar (* const SegmentDYAtT[])(const SkPoint [], double ) = { 398e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com NULL, 399e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com LineDYAtT, 400e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com QuadDYAtT, 401e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com CubicDYAtT 402e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com}; 403e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com 4047ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.comstatic SkVector LineDXDYAtT(const SkPoint a[2], double ) { 40545a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com return a[1] - a[0]; 40645a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com} 40745a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com 4087ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.comstatic SkVector QuadDXDYAtT(const SkPoint a[3], double t) { 40945a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com MAKE_CONST_QUAD(quad, a); 4107ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com _Vector v = dxdy_at_t(quad, t); 4117ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com return v.asSkVector(); 41245a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com} 41345a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com 4147ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.comstatic SkVector CubicDXDYAtT(const SkPoint a[4], double t) { 41545a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com MAKE_CONST_CUBIC(cubic, a); 4167ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com _Vector v = dxdy_at_t(cubic, t); 4177ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com return v.asSkVector(); 41845a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com} 41945a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com 4207ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.comstatic SkVector (* const SegmentDXDYAtT[])(const SkPoint [], double ) = { 42145a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com NULL, 42245a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com LineDXDYAtT, 42345a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com QuadDXDYAtT, 42445a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com CubicDXDYAtT 42545a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com}; 42645a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com 427fa0588ff672564af1c235a63589573829035a60bcaryclark@google.comstatic void LineSubDivide(const SkPoint a[2], double startT, double endT, 428fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com SkPoint sub[2]) { 42932546db1494a6c6433a7919844133a6ff5b5c7b2caryclark@google.com MAKE_CONST_LINE(aLine, a); 430fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com _Line dst; 431fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com sub_divide(aLine, startT, endT, dst); 432fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com sub[0].fX = SkDoubleToScalar(dst[0].x); 433fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com sub[0].fY = SkDoubleToScalar(dst[0].y); 434fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com sub[1].fX = SkDoubleToScalar(dst[1].x); 435fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com sub[1].fY = SkDoubleToScalar(dst[1].y); 436fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com} 437fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 438fa0588ff672564af1c235a63589573829035a60bcaryclark@google.comstatic void QuadSubDivide(const SkPoint a[3], double startT, double endT, 439fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com SkPoint sub[3]) { 44032546db1494a6c6433a7919844133a6ff5b5c7b2caryclark@google.com MAKE_CONST_QUAD(aQuad, a); 441fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com Quadratic dst; 442fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com sub_divide(aQuad, startT, endT, dst); 443fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com sub[0].fX = SkDoubleToScalar(dst[0].x); 444fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com sub[0].fY = SkDoubleToScalar(dst[0].y); 445fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com sub[1].fX = SkDoubleToScalar(dst[1].x); 446fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com sub[1].fY = SkDoubleToScalar(dst[1].y); 447fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com sub[2].fX = SkDoubleToScalar(dst[2].x); 448fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com sub[2].fY = SkDoubleToScalar(dst[2].y); 449fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com} 450fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 451fa0588ff672564af1c235a63589573829035a60bcaryclark@google.comstatic void CubicSubDivide(const SkPoint a[4], double startT, double endT, 452fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com SkPoint sub[4]) { 45332546db1494a6c6433a7919844133a6ff5b5c7b2caryclark@google.com MAKE_CONST_CUBIC(aCubic, a); 454fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com Cubic dst; 455fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com sub_divide(aCubic, startT, endT, dst); 456fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com sub[0].fX = SkDoubleToScalar(dst[0].x); 457fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com sub[0].fY = SkDoubleToScalar(dst[0].y); 458fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com sub[1].fX = SkDoubleToScalar(dst[1].x); 459fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com sub[1].fY = SkDoubleToScalar(dst[1].y); 460fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com sub[2].fX = SkDoubleToScalar(dst[2].x); 461fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com sub[2].fY = SkDoubleToScalar(dst[2].y); 462fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com sub[3].fX = SkDoubleToScalar(dst[3].x); 463fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com sub[3].fY = SkDoubleToScalar(dst[3].y); 464fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com} 465fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 466b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.comstatic void (* const SegmentSubDivide[])(const SkPoint [], double , double , 467b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com SkPoint []) = { 468b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com NULL, 469b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com LineSubDivide, 470b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com QuadSubDivide, 471b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com CubicSubDivide 472b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com}; 473b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com 474aa35831d1d0e4c798a63fe772430adc4f3a038cdcaryclark@google.comstatic void LineSubDivideHD(const SkPoint a[2], double startT, double endT, _Line& dst) { 47532546db1494a6c6433a7919844133a6ff5b5c7b2caryclark@google.com MAKE_CONST_LINE(aLine, a); 4763350c3c68ab75cd08721da3a938b8d2b10096d70caryclark@google.com sub_divide(aLine, startT, endT, dst); 4773350c3c68ab75cd08721da3a938b8d2b10096d70caryclark@google.com} 4783350c3c68ab75cd08721da3a938b8d2b10096d70caryclark@google.com 479aa35831d1d0e4c798a63fe772430adc4f3a038cdcaryclark@google.comstatic void QuadSubDivideHD(const SkPoint a[3], double startT, double endT, Quadratic& dst) { 48032546db1494a6c6433a7919844133a6ff5b5c7b2caryclark@google.com MAKE_CONST_QUAD(aQuad, a); 4813350c3c68ab75cd08721da3a938b8d2b10096d70caryclark@google.com sub_divide(aQuad, startT, endT, dst); 4823350c3c68ab75cd08721da3a938b8d2b10096d70caryclark@google.com} 4833350c3c68ab75cd08721da3a938b8d2b10096d70caryclark@google.com 484aa35831d1d0e4c798a63fe772430adc4f3a038cdcaryclark@google.comstatic void CubicSubDivideHD(const SkPoint a[4], double startT, double endT, Cubic& dst) { 48532546db1494a6c6433a7919844133a6ff5b5c7b2caryclark@google.com MAKE_CONST_CUBIC(aCubic, a); 4863350c3c68ab75cd08721da3a938b8d2b10096d70caryclark@google.com sub_divide(aCubic, startT, endT, dst); 4873350c3c68ab75cd08721da3a938b8d2b10096d70caryclark@google.com} 4883350c3c68ab75cd08721da3a938b8d2b10096d70caryclark@google.com 48945a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.comstatic SkPoint QuadTop(const SkPoint a[3], double startT, double endT) { 49045a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com MAKE_CONST_QUAD(quad, a); 49145a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com _Point topPt = top(quad, startT, endT); 49245a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com return topPt.asSkPoint(); 49345a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com} 49445a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com 49545a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.comstatic SkPoint CubicTop(const SkPoint a[3], double startT, double endT) { 49645a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com MAKE_CONST_CUBIC(cubic, a); 49745a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com _Point topPt = top(cubic, startT, endT); 49845a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com return topPt.asSkPoint(); 49945a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com} 50045a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com 50145a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.comstatic SkPoint (* SegmentTop[])(const SkPoint[], double , double ) = { 50245a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com NULL, 50345a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com NULL, 50445a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com QuadTop, 50545a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com CubicTop 50645a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com}; 50745a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com 50865f9f0a1664a9cb38157ccfbcc3e0e936af0a58ecaryclark@google.com#if DEBUG_UNUSED 509fa0588ff672564af1c235a63589573829035a60bcaryclark@google.comstatic void QuadSubBounds(const SkPoint a[3], double startT, double endT, 510fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com SkRect& bounds) { 511fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com SkPoint dst[3]; 512fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com QuadSubDivide(a, startT, endT, dst); 513fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com bounds.fLeft = bounds.fRight = dst[0].fX; 514fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com bounds.fTop = bounds.fBottom = dst[0].fY; 515fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com for (int index = 1; index < 3; ++index) { 516fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com bounds.growToInclude(dst[index].fX, dst[index].fY); 517fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 518fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com} 519fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 520fa0588ff672564af1c235a63589573829035a60bcaryclark@google.comstatic void CubicSubBounds(const SkPoint a[4], double startT, double endT, 521fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com SkRect& bounds) { 522fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com SkPoint dst[4]; 523fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com CubicSubDivide(a, startT, endT, dst); 524fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com bounds.fLeft = bounds.fRight = dst[0].fX; 525fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com bounds.fTop = bounds.fBottom = dst[0].fY; 526fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com for (int index = 1; index < 4; ++index) { 527fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com bounds.growToInclude(dst[index].fX, dst[index].fY); 528fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 529fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com} 53065f9f0a1664a9cb38157ccfbcc3e0e936af0a58ecaryclark@google.com#endif 531fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 53215fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.comstatic SkPath::Verb QuadReduceOrder(const SkPoint a[3], 533fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com SkTDArray<SkPoint>& reducePts) { 53432546db1494a6c6433a7919844133a6ff5b5c7b2caryclark@google.com MAKE_CONST_QUAD(aQuad, a); 535fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com Quadratic dst; 53647d73daa7a971e7eee5822def7922f7d43b2dc47caryclark@google.com int order = reduceOrder(aQuad, dst, kReduceOrder_TreatAsFill); 53724bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com if (order == 2) { // quad became line 53824bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com for (int index = 0; index < order; ++index) { 53924bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com SkPoint* pt = reducePts.append(); 54024bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com pt->fX = SkDoubleToScalar(dst[index].x); 54124bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com pt->fY = SkDoubleToScalar(dst[index].y); 54224bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com } 543fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 544fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com return (SkPath::Verb) (order - 1); 545fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com} 546fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 547fa0588ff672564af1c235a63589573829035a60bcaryclark@google.comstatic SkPath::Verb CubicReduceOrder(const SkPoint a[4], 548fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com SkTDArray<SkPoint>& reducePts) { 54932546db1494a6c6433a7919844133a6ff5b5c7b2caryclark@google.com MAKE_CONST_CUBIC(aCubic, a); 550fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com Cubic dst; 55147d73daa7a971e7eee5822def7922f7d43b2dc47caryclark@google.com int order = reduceOrder(aCubic, dst, kReduceOrder_QuadraticsAllowed, kReduceOrder_TreatAsFill); 55224bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com if (order == 2 || order == 3) { // cubic became line or quad 55324bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com for (int index = 0; index < order; ++index) { 55424bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com SkPoint* pt = reducePts.append(); 55524bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com pt->fX = SkDoubleToScalar(dst[index].x); 55624bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com pt->fY = SkDoubleToScalar(dst[index].y); 55724bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com } 558fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 559fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com return (SkPath::Verb) (order - 1); 560fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com} 561fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 56215fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.comstatic bool QuadIsLinear(const SkPoint a[3]) { 56332546db1494a6c6433a7919844133a6ff5b5c7b2caryclark@google.com MAKE_CONST_QUAD(aQuad, a); 56415fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com return isLinear(aQuad, 0, 2); 56515fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com} 56615fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com 56715fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.comstatic bool CubicIsLinear(const SkPoint a[4]) { 56832546db1494a6c6433a7919844133a6ff5b5c7b2caryclark@google.com MAKE_CONST_CUBIC(aCubic, a); 56915fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com return isLinear(aCubic, 0, 3); 57015fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com} 57115fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com 572fa0588ff672564af1c235a63589573829035a60bcaryclark@google.comstatic SkScalar LineLeftMost(const SkPoint a[2], double startT, double endT) { 57332546db1494a6c6433a7919844133a6ff5b5c7b2caryclark@google.com MAKE_CONST_LINE(aLine, a); 574fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com double x[2]; 575fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com xy_at_t(aLine, startT, x[0], *(double*) 0); 576495f8e435b677f28913cd2adc8caa8d3d766dd17caryclark@google.com xy_at_t(aLine, endT, x[1], *(double*) 0); 577495f8e435b677f28913cd2adc8caa8d3d766dd17caryclark@google.com return SkMinScalar((float) x[0], (float) x[1]); 578fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com} 579fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 580fa0588ff672564af1c235a63589573829035a60bcaryclark@google.comstatic SkScalar QuadLeftMost(const SkPoint a[3], double startT, double endT) { 58132546db1494a6c6433a7919844133a6ff5b5c7b2caryclark@google.com MAKE_CONST_QUAD(aQuad, a); 582b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com return (float) leftMostT(aQuad, startT, endT); 583fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com} 584fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 585fa0588ff672564af1c235a63589573829035a60bcaryclark@google.comstatic SkScalar CubicLeftMost(const SkPoint a[4], double startT, double endT) { 58632546db1494a6c6433a7919844133a6ff5b5c7b2caryclark@google.com MAKE_CONST_CUBIC(aCubic, a); 587b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com return (float) leftMostT(aCubic, startT, endT); 588fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com} 589fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 590fa0588ff672564af1c235a63589573829035a60bcaryclark@google.comstatic SkScalar (* const SegmentLeftMost[])(const SkPoint [], double , double) = { 591fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com NULL, 592fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com LineLeftMost, 593fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com QuadLeftMost, 594fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com CubicLeftMost 595fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com}; 596fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 5976aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com#if 0 // currently unused 598235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.comstatic int QuadRayIntersect(const SkPoint a[3], const SkPoint b[2], 599235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com Intersections& intersections) { 600235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com MAKE_CONST_QUAD(aQuad, a); 601235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com MAKE_CONST_LINE(bLine, b); 602235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com return intersectRay(aQuad, bLine, intersections); 603235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com} 6046aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com#endif 6056aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com 606f9502d7dfad5b361a3cdaa42eb75b593c95f79d8caryclark@google.comstatic int QuadRayIntersect(const SkPoint a[3], const _Line& bLine, Intersections& intersections) { 6076aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com MAKE_CONST_QUAD(aQuad, a); 6086aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com return intersectRay(aQuad, bLine, intersections); 6096aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com} 610235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com 611f9502d7dfad5b361a3cdaa42eb75b593c95f79d8caryclark@google.comstatic int CubicRayIntersect(const SkPoint a[3], const _Line& bLine, Intersections& intersections) { 612f9502d7dfad5b361a3cdaa42eb75b593c95f79d8caryclark@google.com MAKE_CONST_CUBIC(aCubic, a); 613f9502d7dfad5b361a3cdaa42eb75b593c95f79d8caryclark@google.com return intersectRay(aCubic, bLine, intersections); 614f9502d7dfad5b361a3cdaa42eb75b593c95f79d8caryclark@google.com} 615f9502d7dfad5b361a3cdaa42eb75b593c95f79d8caryclark@google.com 616f9502d7dfad5b361a3cdaa42eb75b593c95f79d8caryclark@google.comstatic int (* const SegmentRayIntersect[])(const SkPoint [], const _Line& , Intersections&) = { 617f9502d7dfad5b361a3cdaa42eb75b593c95f79d8caryclark@google.com NULL, 618f9502d7dfad5b361a3cdaa42eb75b593c95f79d8caryclark@google.com NULL, 619f9502d7dfad5b361a3cdaa42eb75b593c95f79d8caryclark@google.com QuadRayIntersect, 620f9502d7dfad5b361a3cdaa42eb75b593c95f79d8caryclark@google.com CubicRayIntersect 621f9502d7dfad5b361a3cdaa42eb75b593c95f79d8caryclark@google.com}; 622f9502d7dfad5b361a3cdaa42eb75b593c95f79d8caryclark@google.com 623f9502d7dfad5b361a3cdaa42eb75b593c95f79d8caryclark@google.com 624f9502d7dfad5b361a3cdaa42eb75b593c95f79d8caryclark@google.com 625db0b3e099f888213535c4ad4c785b84544309033caryclark@google.comstatic bool LineVertical(const SkPoint a[2], double startT, double endT) { 626db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com MAKE_CONST_LINE(aLine, a); 627db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com double x[2]; 628db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com xy_at_t(aLine, startT, x[0], *(double*) 0); 629db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com xy_at_t(aLine, endT, x[1], *(double*) 0); 6306d0032a8ec680221c2a704cac2391f2a2d77546fcaryclark@google.com return AlmostEqualUlps((float) x[0], (float) x[1]); 631db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com} 632db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com 633db0b3e099f888213535c4ad4c785b84544309033caryclark@google.comstatic bool QuadVertical(const SkPoint a[3], double startT, double endT) { 634db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com SkPoint dst[3]; 635db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com QuadSubDivide(a, startT, endT, dst); 6366d0032a8ec680221c2a704cac2391f2a2d77546fcaryclark@google.com return AlmostEqualUlps(dst[0].fX, dst[1].fX) && AlmostEqualUlps(dst[1].fX, dst[2].fX); 637db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com} 638db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com 639db0b3e099f888213535c4ad4c785b84544309033caryclark@google.comstatic bool CubicVertical(const SkPoint a[4], double startT, double endT) { 640db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com SkPoint dst[4]; 641db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com CubicSubDivide(a, startT, endT, dst); 6426d0032a8ec680221c2a704cac2391f2a2d77546fcaryclark@google.com return AlmostEqualUlps(dst[0].fX, dst[1].fX) && AlmostEqualUlps(dst[1].fX, dst[2].fX) 6436d0032a8ec680221c2a704cac2391f2a2d77546fcaryclark@google.com && AlmostEqualUlps(dst[2].fX, dst[3].fX); 644db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com} 645db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com 646db0b3e099f888213535c4ad4c785b84544309033caryclark@google.comstatic bool (* const SegmentVertical[])(const SkPoint [], double , double) = { 647db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com NULL, 648db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com LineVertical, 649db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com QuadVertical, 650db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com CubicVertical 651db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com}; 652db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com 653b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.comclass Segment; 654b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com 6556aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.comstruct Span { 6566aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com Segment* fOther; 6576aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com mutable SkPoint fPt; // lazily computed as needed 6586aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com double fT; 6596aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com double fOtherT; // value at fOther[fOtherIndex].fT 6606aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com int fOtherIndex; // can't be used during intersection 66131143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com int fWindSum; // accumulated from contours surrounding this one. 66231143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com int fOppSum; // for binary operators: the opposite winding sum 6636aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com int fWindValue; // 0 == canceled; 1 == normal; >1 == coincident 66457cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com int fOppValue; // normally 0 -- when binary coincident edges combine, opp value goes here 6656aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com bool fDone; // if set, this span to next higher T has been processed 666c91dfe417a51f73c28ecf2708df1e0bee942c6eacaryclark@google.com bool fUnsortableStart; // set when start is part of an unsortable pair 667c91dfe417a51f73c28ecf2708df1e0bee942c6eacaryclark@google.com bool fUnsortableEnd; // set when end is part of an unsortable pair 668f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com bool fTiny; // if set, span may still be considered once for edge following 6694aaaaeace7e617ddc473645756fb7c20790bc270caryclark@google.com bool fLoop; // set when a cubic loops back to this point 6706aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com}; 6716aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com 67215fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com// sorting angles 67315fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com// given angles of {dx dy ddx ddy dddx dddy} sort them 67415fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.comclass Angle { 67515fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.compublic: 676b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com // FIXME: this is bogus for quads and cubics 677b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com // if the quads and cubics' line from end pt to ctrl pt are coincident, 678b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com // there's no obvious way to determine the curve ordering from the 679b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com // derivatives alone. In particular, if one quadratic's coincident tangent 680b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com // is longer than the other curve, the final control point can place the 681b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com // longer curve on either side of the shorter one. 682b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com // Using Bezier curve focus http://cagd.cs.byu.edu/~tom/papers/bezclip.pdf 683b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com // may provide some help, but nothing has been figured out yet. 6844f55d39a175afe70c1231eb7389790633210106fskia.committer@gmail.com 68532546db1494a6c6433a7919844133a6ff5b5c7b2caryclark@google.com /*( 68632546db1494a6c6433a7919844133a6ff5b5c7b2caryclark@google.com for quads and cubics, set up a parameterized line (e.g. LineParameters ) 68732546db1494a6c6433a7919844133a6ff5b5c7b2caryclark@google.com for points [0] to [1]. See if point [2] is on that line, or on one side 68832546db1494a6c6433a7919844133a6ff5b5c7b2caryclark@google.com or the other. If it both quads' end points are on the same side, choose 68932546db1494a6c6433a7919844133a6ff5b5c7b2caryclark@google.com the shorter tangent. If the tangents are equal, choose the better second 69032546db1494a6c6433a7919844133a6ff5b5c7b2caryclark@google.com tangent angle 6914f55d39a175afe70c1231eb7389790633210106fskia.committer@gmail.com 6926aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com maybe I could set up LineParameters lazily 69332546db1494a6c6433a7919844133a6ff5b5c7b2caryclark@google.com */ 69415fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com bool operator<(const Angle& rh) const { 695235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com double y = dy(); 696235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com double ry = rh.dy(); 697235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com if ((y < 0) ^ (ry < 0)) { // OPTIMIZATION: better to use y * ry < 0 ? 698235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com return y < 0; 699b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com } 700235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com double x = dx(); 701235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com double rx = rh.dx(); 702235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com if (y == 0 && ry == 0 && x * rx < 0) { 703235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com return x < rx; 70415fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com } 7056aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com double x_ry = x * ry; 7066aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com double rx_y = rx * y; 7076aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com double cmp = x_ry - rx_y; 708c899ad9c7fa28234d99479ab09afb6866bbd8dc3caryclark@google.com if (!approximately_zero(cmp)) { 70915fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com return cmp < 0; 71015fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com } 711d1688744d537d928699b6069f99c4470a0f6e772caryclark@google.com if (approximately_zero(x_ry) && approximately_zero(rx_y) 712d1688744d537d928699b6069f99c4470a0f6e772caryclark@google.com && !approximately_zero_squared(cmp)) { 713d1688744d537d928699b6069f99c4470a0f6e772caryclark@google.com return cmp < 0; 714d1688744d537d928699b6069f99c4470a0f6e772caryclark@google.com } 715c91dfe417a51f73c28ecf2708df1e0bee942c6eacaryclark@google.com // at this point, the initial tangent line is coincident 71686adc0d414496185972a7191aca904e9e7223d7dcaryclark@google.com // see if edges curl away from each other 71731143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com if (fSide * rh.fSide <= 0 && (!approximately_zero(fSide) 71831143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com || !approximately_zero(rh.fSide))) { 719c91dfe417a51f73c28ecf2708df1e0bee942c6eacaryclark@google.com // FIXME: running demo will trigger this assertion 720c91dfe417a51f73c28ecf2708df1e0bee942c6eacaryclark@google.com // (don't know if commenting out will trigger further assertion or not) 721c91dfe417a51f73c28ecf2708df1e0bee942c6eacaryclark@google.com // commenting it out allows demo to run in release, though 722c91dfe417a51f73c28ecf2708df1e0bee942c6eacaryclark@google.com // SkASSERT(fSide != rh.fSide); 723c91dfe417a51f73c28ecf2708df1e0bee942c6eacaryclark@google.com return fSide < rh.fSide; 724c91dfe417a51f73c28ecf2708df1e0bee942c6eacaryclark@google.com } 7256aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com // see if either curve can be lengthened and try the tangent compare again 7266aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com if (cmp && (*fSpans)[fEnd].fOther != rh.fSegment // tangents not absolutely identical 7276aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com && (*rh.fSpans)[rh.fEnd].fOther != fSegment) { // and not intersecting 7286aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com Angle longer = *this; 7296aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com Angle rhLonger = rh; 7306aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com if (longer.lengthen() | rhLonger.lengthen()) { 7316aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com return longer < rhLonger; 7326aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com } 7338f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com #if 0 734a461ff0866526bc51dbd4c4f9f066a727ec21510caryclark@google.com // what if we extend in the other direction? 735a461ff0866526bc51dbd4c4f9f066a727ec21510caryclark@google.com longer = *this; 736a461ff0866526bc51dbd4c4f9f066a727ec21510caryclark@google.com rhLonger = rh; 737a461ff0866526bc51dbd4c4f9f066a727ec21510caryclark@google.com if (longer.reverseLengthen() | rhLonger.reverseLengthen()) { 738a461ff0866526bc51dbd4c4f9f066a727ec21510caryclark@google.com return longer < rhLonger; 739a461ff0866526bc51dbd4c4f9f066a727ec21510caryclark@google.com } 7408f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com #endif 741b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com } 742185c7c47983dde02b5542cf45fe3fc58a3ecb055caryclark@google.com if ((fVerb == SkPath::kLine_Verb && approximately_zero(x) && approximately_zero(y)) 74331143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com || (rh.fVerb == SkPath::kLine_Verb 74431143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com && approximately_zero(rx) && approximately_zero(ry))) { 745185c7c47983dde02b5542cf45fe3fc58a3ecb055caryclark@google.com // See general unsortable comment below. This case can happen when 746185c7c47983dde02b5542cf45fe3fc58a3ecb055caryclark@google.com // one line has a non-zero change in t but no change in x and y. 747185c7c47983dde02b5542cf45fe3fc58a3ecb055caryclark@google.com fUnsortable = true; 748185c7c47983dde02b5542cf45fe3fc58a3ecb055caryclark@google.com rh.fUnsortable = true; 749185c7c47983dde02b5542cf45fe3fc58a3ecb055caryclark@google.com return this < &rh; // even with no solution, return a stable sort 750185c7c47983dde02b5542cf45fe3fc58a3ecb055caryclark@google.com } 751e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com if ((*rh.fSpans)[SkMin32(rh.fStart, rh.fEnd)].fTiny 752e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com || (*fSpans)[SkMin32(fStart, fEnd)].fTiny) { 753e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com fUnsortable = true; 754e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com rh.fUnsortable = true; 755e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com return this < &rh; // even with no solution, return a stable sort 756e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com } 757f9502d7dfad5b361a3cdaa42eb75b593c95f79d8caryclark@google.com SkASSERT(fVerb >= SkPath::kQuad_Verb); 758f9502d7dfad5b361a3cdaa42eb75b593c95f79d8caryclark@google.com SkASSERT(rh.fVerb >= SkPath::kQuad_Verb); 759c1ad0226087e10b1f300b5a45e3d6fdb23b8d1b8skia.committer@gmail.com // FIXME: until I can think of something better, project a ray from the 760d1688744d537d928699b6069f99c4470a0f6e772caryclark@google.com // end of the shorter tangent to midway between the end points 761d1688744d537d928699b6069f99c4470a0f6e772caryclark@google.com // through both curves and use the resulting angle to sort 762235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com // FIXME: some of this setup can be moved to set() if it works, or cached if it's expensive 763235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com double len = fTangent1.normalSquared(); 764235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com double rlen = rh.fTangent1.normalSquared(); 7656aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com _Line ray; 766235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com Intersections i, ri; 767d1688744d537d928699b6069f99c4470a0f6e772caryclark@google.com int roots, rroots; 768d1688744d537d928699b6069f99c4470a0f6e772caryclark@google.com bool flip = false; 769d1688744d537d928699b6069f99c4470a0f6e772caryclark@google.com do { 770f9502d7dfad5b361a3cdaa42eb75b593c95f79d8caryclark@google.com bool useThis = (len < rlen) ^ flip; 771f9502d7dfad5b361a3cdaa42eb75b593c95f79d8caryclark@google.com const Cubic& part = useThis ? fCurvePart : rh.fCurvePart; 772f9502d7dfad5b361a3cdaa42eb75b593c95f79d8caryclark@google.com SkPath::Verb partVerb = useThis ? fVerb : rh.fVerb; 773f9502d7dfad5b361a3cdaa42eb75b593c95f79d8caryclark@google.com ray[0] = partVerb == SkPath::kCubic_Verb && part[0].approximatelyEqual(part[1]) ? 774f9502d7dfad5b361a3cdaa42eb75b593c95f79d8caryclark@google.com part[2] : part[1]; 775f9502d7dfad5b361a3cdaa42eb75b593c95f79d8caryclark@google.com ray[1].x = (part[0].x + part[partVerb].x) / 2; 776f9502d7dfad5b361a3cdaa42eb75b593c95f79d8caryclark@google.com ray[1].y = (part[0].y + part[partVerb].y) / 2; 777d1688744d537d928699b6069f99c4470a0f6e772caryclark@google.com SkASSERT(ray[0] != ray[1]); 778f9502d7dfad5b361a3cdaa42eb75b593c95f79d8caryclark@google.com roots = (*SegmentRayIntersect[fVerb])(fPts, ray, i); 779f9502d7dfad5b361a3cdaa42eb75b593c95f79d8caryclark@google.com rroots = (*SegmentRayIntersect[rh.fVerb])(rh.fPts, ray, ri); 780d1688744d537d928699b6069f99c4470a0f6e772caryclark@google.com } while ((roots == 0 || rroots == 0) && (flip ^= true)); 781c91dfe417a51f73c28ecf2708df1e0bee942c6eacaryclark@google.com if (roots == 0 || rroots == 0) { 782c91dfe417a51f73c28ecf2708df1e0bee942c6eacaryclark@google.com // FIXME: we don't have a solution in this case. The interim solution 783c91dfe417a51f73c28ecf2708df1e0bee942c6eacaryclark@google.com // is to mark the edges as unsortable, exclude them from this and 784c91dfe417a51f73c28ecf2708df1e0bee942c6eacaryclark@google.com // future computations, and allow the returned path to be fragmented 785c91dfe417a51f73c28ecf2708df1e0bee942c6eacaryclark@google.com fUnsortable = true; 786c91dfe417a51f73c28ecf2708df1e0bee942c6eacaryclark@google.com rh.fUnsortable = true; 787c91dfe417a51f73c28ecf2708df1e0bee942c6eacaryclark@google.com return this < &rh; // even with no solution, return a stable sort 788c91dfe417a51f73c28ecf2708df1e0bee942c6eacaryclark@google.com } 7896aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com _Point loc; 7906aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com double best = SK_ScalarInfinity; 7916aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com double dx, dy, dist; 792235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com int index; 793235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com for (index = 0; index < roots; ++index) { 794f9502d7dfad5b361a3cdaa42eb75b593c95f79d8caryclark@google.com (*SegmentXYAtT2[fVerb])(fPts, i.fT[0][index], &loc); 7956aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com dx = loc.x - ray[0].x; 7966aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com dy = loc.y - ray[0].y; 797235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com dist = dx * dx + dy * dy; 798235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com if (best > dist) { 799235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com best = dist; 800235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com } 801235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com } 802235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com for (index = 0; index < rroots; ++index) { 803f9502d7dfad5b361a3cdaa42eb75b593c95f79d8caryclark@google.com (*SegmentXYAtT2[rh.fVerb])(rh.fPts, ri.fT[0][index], &loc); 8046aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com dx = loc.x - ray[0].x; 8056aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com dy = loc.y - ray[0].y; 806235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com dist = dx * dx + dy * dy; 807235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com if (best > dist) { 808235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com return fSide < 0; 809235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com } 810235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com } 811235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com return fSide > 0; 812b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com } 813d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com 81447580694fbe974a065caf7c39c3d2075708c2018caryclark@google.com double dx() const { 815235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com return fTangent1.dx(); 81647580694fbe974a065caf7c39c3d2075708c2018caryclark@google.com } 817b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com 8187db7c6bba9e9a61ad574a1d60b65bce4563beee5caryclark@google.com double dy() const { 819235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com return fTangent1.dy(); 8207db7c6bba9e9a61ad574a1d60b65bce4563beee5caryclark@google.com } 8217db7c6bba9e9a61ad574a1d60b65bce4563beee5caryclark@google.com 822b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com int end() const { 823b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com return fEnd; 82415fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com } 82515fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com 82688f7d0cb09707355bc9079d4b0569537e8048fa9caryclark@google.com bool isHorizontal() const { 827235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com return dy() == 0 && fVerb == SkPath::kLine_Verb; 82888f7d0cb09707355bc9079d4b0569537e8048fa9caryclark@google.com } 829a27096b4740775ae141fd0abaf456d706065c5eeskia.committer@gmail.com 8306aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com bool lengthen() { 8316aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com int newEnd = fEnd; 8326aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com if (fStart < fEnd ? ++newEnd < fSpans->count() : --newEnd >= 0) { 8336aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com fEnd = newEnd; 8346aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com setSpans(); 8356aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com return true; 8366aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com } 8376aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com return false; 8386aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com } 8396aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com 840a461ff0866526bc51dbd4c4f9f066a727ec21510caryclark@google.com bool reverseLengthen() { 841a461ff0866526bc51dbd4c4f9f066a727ec21510caryclark@google.com if (fReversed) { 842a461ff0866526bc51dbd4c4f9f066a727ec21510caryclark@google.com return false; 843a461ff0866526bc51dbd4c4f9f066a727ec21510caryclark@google.com } 844a461ff0866526bc51dbd4c4f9f066a727ec21510caryclark@google.com int newEnd = fStart; 845a461ff0866526bc51dbd4c4f9f066a727ec21510caryclark@google.com if (fStart > fEnd ? ++newEnd < fSpans->count() : --newEnd >= 0) { 846a461ff0866526bc51dbd4c4f9f066a727ec21510caryclark@google.com fEnd = newEnd; 847a461ff0866526bc51dbd4c4f9f066a727ec21510caryclark@google.com fReversed = true; 848a461ff0866526bc51dbd4c4f9f066a727ec21510caryclark@google.com setSpans(); 849a461ff0866526bc51dbd4c4f9f066a727ec21510caryclark@google.com return true; 850a461ff0866526bc51dbd4c4f9f066a727ec21510caryclark@google.com } 851a461ff0866526bc51dbd4c4f9f066a727ec21510caryclark@google.com return false; 852a461ff0866526bc51dbd4c4f9f066a727ec21510caryclark@google.com } 853a461ff0866526bc51dbd4c4f9f066a727ec21510caryclark@google.com 8543350c3c68ab75cd08721da3a938b8d2b10096d70caryclark@google.com void set(const SkPoint* orig, SkPath::Verb verb, const Segment* segment, 8556aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com int start, int end, const SkTDArray<Span>& spans) { 8563350c3c68ab75cd08721da3a938b8d2b10096d70caryclark@google.com fSegment = segment; 8573350c3c68ab75cd08721da3a938b8d2b10096d70caryclark@google.com fStart = start; 8583350c3c68ab75cd08721da3a938b8d2b10096d70caryclark@google.com fEnd = end; 859235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com fPts = orig; 860235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com fVerb = verb; 8616aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com fSpans = &spans; 862a461ff0866526bc51dbd4c4f9f066a727ec21510caryclark@google.com fReversed = false; 863c91dfe417a51f73c28ecf2708df1e0bee942c6eacaryclark@google.com fUnsortable = false; 8646aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com setSpans(); 8656aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com } 866439cb51451ef6f55f65dab90eb7f91acf67ea8feskia.committer@gmail.com 8678f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com 8686aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com void setSpans() { 8696aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com double startT = (*fSpans)[fStart].fT; 8706aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com double endT = (*fSpans)[fEnd].fT; 8716aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com switch (fVerb) { 87232546db1494a6c6433a7919844133a6ff5b5c7b2caryclark@google.com case SkPath::kLine_Verb: 87332546db1494a6c6433a7919844133a6ff5b5c7b2caryclark@google.com _Line l; 8746aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com LineSubDivideHD(fPts, startT, endT, l); 87532546db1494a6c6433a7919844133a6ff5b5c7b2caryclark@google.com // OPTIMIZATION: for pure line compares, we never need fTangent1.c 87632546db1494a6c6433a7919844133a6ff5b5c7b2caryclark@google.com fTangent1.lineEndPoints(l); 877235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com fSide = 0; 87832546db1494a6c6433a7919844133a6ff5b5c7b2caryclark@google.com break; 879f9502d7dfad5b361a3cdaa42eb75b593c95f79d8caryclark@google.com case SkPath::kQuad_Verb: { 880f9502d7dfad5b361a3cdaa42eb75b593c95f79d8caryclark@google.com Quadratic& quad = (Quadratic&)fCurvePart; 881f9502d7dfad5b361a3cdaa42eb75b593c95f79d8caryclark@google.com QuadSubDivideHD(fPts, startT, endT, quad); 882f9502d7dfad5b361a3cdaa42eb75b593c95f79d8caryclark@google.com fTangent1.quadEndPoints(quad, 0, 1); 883aa35831d1d0e4c798a63fe772430adc4f3a038cdcaryclark@google.com if (dx() == 0 && dy() == 0) { 884f9502d7dfad5b361a3cdaa42eb75b593c95f79d8caryclark@google.com fTangent1.quadEndPoints(quad); 885aa35831d1d0e4c798a63fe772430adc4f3a038cdcaryclark@google.com } 886f9502d7dfad5b361a3cdaa42eb75b593c95f79d8caryclark@google.com fSide = -fTangent1.pointDistance(fCurvePart[2]); // not normalized -- compare sign only 887f9502d7dfad5b361a3cdaa42eb75b593c95f79d8caryclark@google.com } break; 88886adc0d414496185972a7191aca904e9e7223d7dcaryclark@google.com case SkPath::kCubic_Verb: { 88986adc0d414496185972a7191aca904e9e7223d7dcaryclark@google.com int nextC = 2; 890f9502d7dfad5b361a3cdaa42eb75b593c95f79d8caryclark@google.com CubicSubDivideHD(fPts, startT, endT, fCurvePart); 891f9502d7dfad5b361a3cdaa42eb75b593c95f79d8caryclark@google.com fTangent1.cubicEndPoints(fCurvePart, 0, 1); 892aa35831d1d0e4c798a63fe772430adc4f3a038cdcaryclark@google.com if (dx() == 0 && dy() == 0) { 893f9502d7dfad5b361a3cdaa42eb75b593c95f79d8caryclark@google.com fTangent1.cubicEndPoints(fCurvePart, 0, 2); 89486adc0d414496185972a7191aca904e9e7223d7dcaryclark@google.com nextC = 3; 895aa35831d1d0e4c798a63fe772430adc4f3a038cdcaryclark@google.com if (dx() == 0 && dy() == 0) { 896f9502d7dfad5b361a3cdaa42eb75b593c95f79d8caryclark@google.com fTangent1.cubicEndPoints(fCurvePart, 0, 3); 897aa35831d1d0e4c798a63fe772430adc4f3a038cdcaryclark@google.com } 898aa35831d1d0e4c798a63fe772430adc4f3a038cdcaryclark@google.com } 899f9502d7dfad5b361a3cdaa42eb75b593c95f79d8caryclark@google.com fSide = -fTangent1.pointDistance(fCurvePart[nextC]); // compare sign only 90086adc0d414496185972a7191aca904e9e7223d7dcaryclark@google.com if (nextC == 2 && approximately_zero(fSide)) { 901f9502d7dfad5b361a3cdaa42eb75b593c95f79d8caryclark@google.com fSide = -fTangent1.pointDistance(fCurvePart[3]); 90286adc0d414496185972a7191aca904e9e7223d7dcaryclark@google.com } 90386adc0d414496185972a7191aca904e9e7223d7dcaryclark@google.com } break; 904235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com default: 905235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com SkASSERT(0); 9063350c3c68ab75cd08721da3a938b8d2b10096d70caryclark@google.com } 907db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com fUnsortable = dx() == 0 && dy() == 0; 908f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com if (fUnsortable) { 909f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com return; 910f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com } 911f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com SkASSERT(fStart != fEnd); 912f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com int step = fStart < fEnd ? 1 : -1; // OPTIMIZE: worth fStart - fEnd >> 31 type macro? 913f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com for (int index = fStart; index != fEnd; index += step) { 9148f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com#if 1 9158f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com const Span& thisSpan = (*fSpans)[index]; 9168f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com const Span& nextSpan = (*fSpans)[index + step]; 91747d73daa7a971e7eee5822def7922f7d43b2dc47caryclark@google.com if (thisSpan.fTiny || precisely_equal(thisSpan.fT, nextSpan.fT)) { 9188f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com continue; 919f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com } 9208f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com fUnsortable = step > 0 ? thisSpan.fUnsortableStart : nextSpan.fUnsortableEnd; 9218f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com#if DEBUG_UNSORTABLE 9228f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com if (fUnsortable) { 9238f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com SkPoint iPt, ePt; 9248f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com (*SegmentXYAtT[fVerb])(fPts, thisSpan.fT, &iPt); 9258f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com (*SegmentXYAtT[fVerb])(fPts, nextSpan.fT, &ePt); 9268f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com SkDebugf("%s unsortable [%d] (%1.9g,%1.9g) [%d] (%1.9g,%1.9g)\n", __FUNCTION__, 9278f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com index, iPt.fX, iPt.fY, fEnd, ePt.fX, ePt.fY); 9288f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com } 9298f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com#endif 9308f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com return; 9318f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com#else 9328f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com if ((*fSpans)[index].fUnsortableStart) { 933f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com fUnsortable = true; 934f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com return; 935f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com } 936e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com#endif 937f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com } 9388f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com#if 1 9398f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com#if DEBUG_UNSORTABLE 9408f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com SkPoint iPt, ePt; 9418f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com (*SegmentXYAtT[fVerb])(fPts, startT, &iPt); 9428f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com (*SegmentXYAtT[fVerb])(fPts, endT, &ePt); 9438f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com SkDebugf("%s all tiny unsortable [%d] (%1.9g,%1.9g) [%d] (%1.9g,%1.9g)\n", __FUNCTION__, 9448f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com fStart, iPt.fX, iPt.fY, fEnd, ePt.fX, ePt.fY); 9458f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com#endif 9468f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com fUnsortable = true; 9478f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com#endif 9483350c3c68ab75cd08721da3a938b8d2b10096d70caryclark@google.com } 94988f7d0cb09707355bc9079d4b0569537e8048fa9caryclark@google.com 9501577e8f9c5bc8436cc71d3438c6d0b9f02c38338caryclark@google.com Segment* segment() const { 9518dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com return const_cast<Segment*>(fSegment); 952b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com } 953d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com 954b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com int sign() const { 955495f8e435b677f28913cd2adc8caa8d3d766dd17caryclark@google.com return SkSign32(fStart - fEnd); 956b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com } 957d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com 958c91dfe417a51f73c28ecf2708df1e0bee942c6eacaryclark@google.com const SkTDArray<Span>* spans() const { 959c91dfe417a51f73c28ecf2708df1e0bee942c6eacaryclark@google.com return fSpans; 960c91dfe417a51f73c28ecf2708df1e0bee942c6eacaryclark@google.com } 961c91dfe417a51f73c28ecf2708df1e0bee942c6eacaryclark@google.com 962b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com int start() const { 963b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com return fStart; 96415fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com } 96520c301bd1aa4578c6d0abb23ac2c72b5fbb436dbskia.committer@gmail.com 966c91dfe417a51f73c28ecf2708df1e0bee942c6eacaryclark@google.com bool unsortable() const { 967c91dfe417a51f73c28ecf2708df1e0bee942c6eacaryclark@google.com return fUnsortable; 968c91dfe417a51f73c28ecf2708df1e0bee942c6eacaryclark@google.com } 96915fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com 970c899ad9c7fa28234d99479ab09afb6866bbd8dc3caryclark@google.com#if DEBUG_ANGLE 9716aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com const SkPoint* pts() const { 9726aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com return fPts; 9736aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com } 9746aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com 9756aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com SkPath::Verb verb() const { 9766aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com return fVerb; 9776aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com } 978439cb51451ef6f55f65dab90eb7f91acf67ea8feskia.committer@gmail.com 979c899ad9c7fa28234d99479ab09afb6866bbd8dc3caryclark@google.com void debugShow(const SkPoint& a) const { 9806aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com SkDebugf(" d=(%1.9g,%1.9g) side=%1.9g\n", dx(), dy(), fSide); 981c899ad9c7fa28234d99479ab09afb6866bbd8dc3caryclark@google.com } 982c899ad9c7fa28234d99479ab09afb6866bbd8dc3caryclark@google.com#endif 983c899ad9c7fa28234d99479ab09afb6866bbd8dc3caryclark@google.com 98415fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.comprivate: 985235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com const SkPoint* fPts; 986f9502d7dfad5b361a3cdaa42eb75b593c95f79d8caryclark@google.com Cubic fCurvePart; 987235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com SkPath::Verb fVerb; 988235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com double fSide; 989235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com LineParameters fTangent1; 9906aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com const SkTDArray<Span>* fSpans; 9918dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com const Segment* fSegment; 992b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com int fStart; 993b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com int fEnd; 994a461ff0866526bc51dbd4c4f9f066a727ec21510caryclark@google.com bool fReversed; 995c91dfe417a51f73c28ecf2708df1e0bee942c6eacaryclark@google.com mutable bool fUnsortable; // this alone is editable by the less than operator 99615fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com}; 99715fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com 9988dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com// Bounds, unlike Rect, does not consider a line to be empty. 999fa0588ff672564af1c235a63589573829035a60bcaryclark@google.comstruct Bounds : public SkRect { 1000fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com static bool Intersects(const Bounds& a, const Bounds& b) { 1001fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com return a.fLeft <= b.fRight && b.fLeft <= a.fRight && 1002fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com a.fTop <= b.fBottom && b.fTop <= a.fBottom; 1003fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 1004fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 10058dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com void add(SkScalar left, SkScalar top, SkScalar right, SkScalar bottom) { 10068dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com if (left < fLeft) { 10078dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com fLeft = left; 10088dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com } 10098dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com if (top < fTop) { 10108dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com fTop = top; 10118dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com } 10128dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com if (right > fRight) { 10138dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com fRight = right; 10148dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com } 10158dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com if (bottom > fBottom) { 10168dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com fBottom = bottom; 10178dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com } 10188dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com } 10198dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com 10208dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com void add(const Bounds& toAdd) { 10218dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com add(toAdd.fLeft, toAdd.fTop, toAdd.fRight, toAdd.fBottom); 10228dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com } 1023c7b4be7f110bc7b487c3c3f28d82877584e74c2fskia.committer@gmail.com 1024e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com void add(const SkPoint& pt) { 1025e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com if (pt.fX < fLeft) fLeft = pt.fX; 1026e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com if (pt.fY < fTop) fTop = pt.fY; 1027e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com if (pt.fX > fRight) fRight = pt.fX; 1028e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com if (pt.fY > fBottom) fBottom = pt.fY; 1029e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com } 1030e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com 1031fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com bool isEmpty() { 1032fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com return fLeft > fRight || fTop > fBottom 1033235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com || (fLeft == fRight && fTop == fBottom) 1034beda389e646d6be3cfef853584a78ca8ba39d0fccaryclark@google.com || sk_double_isnan(fLeft) || sk_double_isnan(fRight) 1035beda389e646d6be3cfef853584a78ca8ba39d0fccaryclark@google.com || sk_double_isnan(fTop) || sk_double_isnan(fBottom); 1036fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 103703682beb8c1c5dfe714933e9419e1412b33c932dskia.committer@gmail.com 1038fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com void setCubicBounds(const SkPoint a[4]) { 1039fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com _Rect dRect; 104032546db1494a6c6433a7919844133a6ff5b5c7b2caryclark@google.com MAKE_CONST_CUBIC(cubic, a); 1041fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com dRect.setBounds(cubic); 1042b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com set((float) dRect.left, (float) dRect.top, (float) dRect.right, 1043b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com (float) dRect.bottom); 1044fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 1045fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 10461304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com void setLineBounds(const SkPoint a[2]) { 10471304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com setPoint(a[0]); 10481304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com add(a[1]); 10491304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com } 10501304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com 1051fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com void setQuadBounds(const SkPoint a[3]) { 105232546db1494a6c6433a7919844133a6ff5b5c7b2caryclark@google.com MAKE_CONST_QUAD(quad, a); 1053fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com _Rect dRect; 1054fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com dRect.setBounds(quad); 1055b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com set((float) dRect.left, (float) dRect.top, (float) dRect.right, 1056b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com (float) dRect.bottom); 1057fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 1058e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com 1059e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com void setPoint(const SkPoint& pt) { 1060e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com fLeft = fRight = pt.fX; 1061e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com fTop = fBottom = pt.fY; 1062e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com } 1063fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com}; 1064fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 10651304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.comstatic void (Bounds::*setSegmentBounds[])(const SkPoint[]) = { 10661304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com NULL, 10671304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com &Bounds::setLineBounds, 10681304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com &Bounds::setQuadBounds, 10691304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com &Bounds::setCubicBounds 10701304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com}; 10711304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com 10727ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com// OPTIMIZATION: does the following also work, and is it any faster? 10737ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com// return outerWinding * innerWinding > 0 10747ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com// || ((outerWinding + innerWinding < 0) ^ ((outerWinding - innerWinding) < 0))) 10752ddff9388694263c7be9347de7eb768cd0847997caryclark@google.comstatic bool useInnerWinding(int outerWinding, int innerWinding) { 1076c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com SkASSERT(outerWinding != SK_MaxS32); 1077c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com SkASSERT(innerWinding != SK_MaxS32); 10782ddff9388694263c7be9347de7eb768cd0847997caryclark@google.com int absOut = abs(outerWinding); 10792ddff9388694263c7be9347de7eb768cd0847997caryclark@google.com int absIn = abs(innerWinding); 10802ddff9388694263c7be9347de7eb768cd0847997caryclark@google.com bool result = absOut == absIn ? outerWinding < 0 : absOut < absIn; 10815e0500fb5f17fe14db42fc3e0aad08e6b41ccc5fcaryclark@google.com#if 0 && DEBUG_WINDING 1082c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com if (outerWinding * innerWinding < 0) { 108324bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com SkDebugf("%s outer=%d inner=%d result=%s\n", __FUNCTION__, 10842ddff9388694263c7be9347de7eb768cd0847997caryclark@google.com outerWinding, innerWinding, result ? "true" : "false"); 10852ddff9388694263c7be9347de7eb768cd0847997caryclark@google.com } 1086c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com#endif 10872ddff9388694263c7be9347de7eb768cd0847997caryclark@google.com return result; 10882ddff9388694263c7be9347de7eb768cd0847997caryclark@google.com} 10892ddff9388694263c7be9347de7eb768cd0847997caryclark@google.com 10909f3e9a5a17a7546e1c5bfde1eb7e6e9c11870333caryclark@google.com#define F (false) // discard the edge 10919f3e9a5a17a7546e1c5bfde1eb7e6e9c11870333caryclark@google.com#define T (true) // keep the edge 10929f3e9a5a17a7546e1c5bfde1eb7e6e9c11870333caryclark@google.com 1093d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.comstatic const bool gUnaryActiveEdge[2][2] = { 1094d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com// from=0 from=1 1095d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com// to=0,1 to=0,1 1096d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com {F, T}, {T, F}, 1097d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com}; 1098d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com 10999f3e9a5a17a7546e1c5bfde1eb7e6e9c11870333caryclark@google.comstatic const bool gActiveEdge[kShapeOp_Count][2][2][2][2] = { 11009f3e9a5a17a7546e1c5bfde1eb7e6e9c11870333caryclark@google.com// miFrom=0 miFrom=1 11019f3e9a5a17a7546e1c5bfde1eb7e6e9c11870333caryclark@google.com// miTo=0 miTo=1 miTo=0 miTo=1 11029f3e9a5a17a7546e1c5bfde1eb7e6e9c11870333caryclark@google.com// suFrom=0 1 suFrom=0 1 suFrom=0 1 suFrom=0 1 11039f3e9a5a17a7546e1c5bfde1eb7e6e9c11870333caryclark@google.com// suTo=0,1 suTo=0,1 suTo=0,1 suTo=0,1 suTo=0,1 suTo=0,1 suTo=0,1 suTo=0,1 11049f3e9a5a17a7546e1c5bfde1eb7e6e9c11870333caryclark@google.com {{{{F, F}, {F, F}}, {{T, F}, {T, F}}}, {{{T, T}, {F, F}}, {{F, T}, {T, F}}}}, // mi - su 11059f3e9a5a17a7546e1c5bfde1eb7e6e9c11870333caryclark@google.com {{{{F, F}, {F, F}}, {{F, T}, {F, T}}}, {{{F, F}, {T, T}}, {{F, T}, {T, F}}}}, // mi & su 11069f3e9a5a17a7546e1c5bfde1eb7e6e9c11870333caryclark@google.com {{{{F, T}, {T, F}}, {{T, T}, {F, F}}}, {{{T, F}, {T, F}}, {{F, F}, {F, F}}}}, // mi | su 11079f3e9a5a17a7546e1c5bfde1eb7e6e9c11870333caryclark@google.com {{{{F, T}, {T, F}}, {{T, F}, {F, T}}}, {{{T, F}, {F, T}}, {{F, T}, {T, F}}}}, // mi ^ su 1108235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com}; 1109235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com 11109f3e9a5a17a7546e1c5bfde1eb7e6e9c11870333caryclark@google.com#undef F 11119f3e9a5a17a7546e1c5bfde1eb7e6e9c11870333caryclark@google.com#undef T 1112235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com 1113f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com// wrap path to keep track of whether the contour is initialized and non-empty 1114f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.comclass PathWrapper { 1115f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.compublic: 1116f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com PathWrapper(SkPath& path) 1117f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com : fPathPtr(&path) 1118d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com , fCloses(0) 1119d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com , fMoves(0) 1120f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com { 1121f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com init(); 1122f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com } 1123f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com 1124f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com void close() { 1125f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com if (!fHasMove) { 1126f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com return; 1127f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com } 1128f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com bool callClose = isClosed(); 1129f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com lineTo(); 1130f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com if (fEmpty) { 1131f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com return; 1132f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com } 1133f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com if (callClose) { 1134f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com #if DEBUG_PATH_CONSTRUCTION 1135f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com SkDebugf("path.close();\n"); 1136f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com #endif 1137f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com fPathPtr->close(); 1138d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com fCloses++; 1139f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com } 1140f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com init(); 1141f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com } 1142f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com 1143f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com void cubicTo(const SkPoint& pt1, const SkPoint& pt2, const SkPoint& pt3) { 1144f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com lineTo(); 1145f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com moveTo(); 114685ec74ca543b13739db1ad55dedd7bdfae4ab1a6caryclark@google.com fDefer[1] = pt3; 114785ec74ca543b13739db1ad55dedd7bdfae4ab1a6caryclark@google.com nudge(); 114885ec74ca543b13739db1ad55dedd7bdfae4ab1a6caryclark@google.com fDefer[0] = fDefer[1]; 1149f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com#if DEBUG_PATH_CONSTRUCTION 1150f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com SkDebugf("path.cubicTo(%1.9g,%1.9g, %1.9g,%1.9g, %1.9g,%1.9g);\n", 115185ec74ca543b13739db1ad55dedd7bdfae4ab1a6caryclark@google.com pt1.fX, pt1.fY, pt2.fX, pt2.fY, fDefer[1].fX, fDefer[1].fY); 1152f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com#endif 115385ec74ca543b13739db1ad55dedd7bdfae4ab1a6caryclark@google.com fPathPtr->cubicTo(pt1.fX, pt1.fY, pt2.fX, pt2.fY, fDefer[1].fX, fDefer[1].fY); 1154f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com fEmpty = false; 1155f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com } 1156f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com 1157f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com void deferredLine(const SkPoint& pt) { 1158f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com if (pt == fDefer[1]) { 1159f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com return; 1160f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com } 1161f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com if (changedSlopes(pt)) { 1162f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com lineTo(); 1163f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com fDefer[0] = fDefer[1]; 1164f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com } 1165f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com fDefer[1] = pt; 1166f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com } 1167f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com 1168f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com void deferredMove(const SkPoint& pt) { 1169f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com fMoved = true; 1170f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com fHasMove = true; 1171f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com fEmpty = true; 1172f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com fDefer[0] = fDefer[1] = pt; 1173f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com } 1174549c93ef979aeb4dcb65b3d0fca4b58e8ab62227skia.committer@gmail.com 1175f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com void deferredMoveLine(const SkPoint& pt) { 1176f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com if (!fHasMove) { 1177f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com deferredMove(pt); 1178f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com } 1179f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com deferredLine(pt); 1180f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com } 1181549c93ef979aeb4dcb65b3d0fca4b58e8ab62227skia.committer@gmail.com 1182f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com bool hasMove() const { 1183f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com return fHasMove; 1184f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com } 1185f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com 1186f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com void init() { 1187f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com fEmpty = true; 1188f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com fHasMove = false; 1189f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com fMoved = false; 1190f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com } 1191f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com 1192f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com bool isClosed() const { 1193f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com return !fEmpty && fFirstPt == fDefer[1]; 1194f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com } 1195549c93ef979aeb4dcb65b3d0fca4b58e8ab62227skia.committer@gmail.com 1196f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com void lineTo() { 1197f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com if (fDefer[0] == fDefer[1]) { 1198f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com return; 1199f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com } 1200f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com moveTo(); 120185ec74ca543b13739db1ad55dedd7bdfae4ab1a6caryclark@google.com nudge(); 1202f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com fEmpty = false; 1203f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com#if DEBUG_PATH_CONSTRUCTION 1204f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com SkDebugf("path.lineTo(%1.9g,%1.9g);\n", fDefer[1].fX, fDefer[1].fY); 1205f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com#endif 1206f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com fPathPtr->lineTo(fDefer[1].fX, fDefer[1].fY); 1207f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com fDefer[0] = fDefer[1]; 1208f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com } 1209f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com 1210f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com const SkPath* nativePath() const { 1211f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com return fPathPtr; 1212f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com } 1213cdcb2ce2744c7e5c47453328dbf292edee79ab37skia.committer@gmail.com 121485ec74ca543b13739db1ad55dedd7bdfae4ab1a6caryclark@google.com void nudge() { 121585ec74ca543b13739db1ad55dedd7bdfae4ab1a6caryclark@google.com if (fEmpty || !AlmostEqualUlps(fDefer[1].fX, fFirstPt.fX) 121685ec74ca543b13739db1ad55dedd7bdfae4ab1a6caryclark@google.com || !AlmostEqualUlps(fDefer[1].fY, fFirstPt.fY)) { 121785ec74ca543b13739db1ad55dedd7bdfae4ab1a6caryclark@google.com return; 121885ec74ca543b13739db1ad55dedd7bdfae4ab1a6caryclark@google.com } 121985ec74ca543b13739db1ad55dedd7bdfae4ab1a6caryclark@google.com fDefer[1] = fFirstPt; 122085ec74ca543b13739db1ad55dedd7bdfae4ab1a6caryclark@google.com } 1221f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com 1222f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com void quadTo(const SkPoint& pt1, const SkPoint& pt2) { 1223f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com lineTo(); 1224f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com moveTo(); 122585ec74ca543b13739db1ad55dedd7bdfae4ab1a6caryclark@google.com fDefer[1] = pt2; 122685ec74ca543b13739db1ad55dedd7bdfae4ab1a6caryclark@google.com nudge(); 122785ec74ca543b13739db1ad55dedd7bdfae4ab1a6caryclark@google.com fDefer[0] = fDefer[1]; 1228f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com#if DEBUG_PATH_CONSTRUCTION 1229f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com SkDebugf("path.quadTo(%1.9g,%1.9g, %1.9g,%1.9g);\n", 123085ec74ca543b13739db1ad55dedd7bdfae4ab1a6caryclark@google.com pt1.fX, pt1.fY, fDefer[1].fX, fDefer[1].fY); 1231f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com#endif 123285ec74ca543b13739db1ad55dedd7bdfae4ab1a6caryclark@google.com fPathPtr->quadTo(pt1.fX, pt1.fY, fDefer[1].fX, fDefer[1].fY); 1233f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com fEmpty = false; 1234f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com } 12357a03d86a3d9adcb13432fbd82039725149487c97skia.committer@gmail.com 1236d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com bool someAssemblyRequired() const { 1237d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com return fCloses < fMoves; 1238d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com } 1239f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com 1240f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.comprotected: 1241f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com bool changedSlopes(const SkPoint& pt) const { 1242f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com if (fDefer[0] == fDefer[1]) { 1243f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com return false; 1244549c93ef979aeb4dcb65b3d0fca4b58e8ab62227skia.committer@gmail.com } 1245f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com SkScalar deferDx = fDefer[1].fX - fDefer[0].fX; 1246f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com SkScalar deferDy = fDefer[1].fY - fDefer[0].fY; 1247f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com SkScalar lineDx = pt.fX - fDefer[1].fX; 1248f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com SkScalar lineDy = pt.fY - fDefer[1].fY; 1249f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com return deferDx * lineDy != deferDy * lineDx; 1250f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com } 1251f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com 1252f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com void moveTo() { 1253f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com if (!fMoved) { 1254f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com return; 1255f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com } 1256f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com fFirstPt = fDefer[0]; 1257f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com#if DEBUG_PATH_CONSTRUCTION 1258f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com SkDebugf("path.moveTo(%1.9g,%1.9g);\n", fDefer[0].fX, fDefer[0].fY); 1259f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com#endif 1260f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com fPathPtr->moveTo(fDefer[0].fX, fDefer[0].fY); 1261f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com fMoved = false; 1262d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com fMoves++; 1263f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com } 1264f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com 1265f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.comprivate: 1266f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com SkPath* fPathPtr; 1267f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com SkPoint fDefer[2]; 1268f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com SkPoint fFirstPt; 1269d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com int fCloses; 1270d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com int fMoves; 1271f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com bool fEmpty; 1272f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com bool fHasMove; 1273f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com bool fMoved; 1274f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com}; 1275f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com 1276fa0588ff672564af1c235a63589573829035a60bcaryclark@google.comclass Segment { 1277fa0588ff672564af1c235a63589573829035a60bcaryclark@google.compublic: 1278fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com Segment() { 1279fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com#if DEBUG_DUMP 1280fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com fID = ++gSegmentID; 1281fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com#endif 1282fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 128324c29d91caa4eaa31f9e77bad614627a252df35eskia.committer@gmail.com 1284fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com bool operator<(const Segment& rh) const { 1285fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com return fBounds.fTop < rh.fBounds.fTop; 1286fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com } 1287fa4a6e964691ff9a88bc047418abe2d4324dfcaecaryclark@google.com 12884eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com bool activeAngle(int index, int& done, SkTDArray<Angle>& angles) { 12899764cc6c109dba208592fe5f16447b8439375746caryclark@google.com if (activeAngleInner(index, done, angles)) { 12909764cc6c109dba208592fe5f16447b8439375746caryclark@google.com return true; 12919764cc6c109dba208592fe5f16447b8439375746caryclark@google.com } 1292fa4a6e964691ff9a88bc047418abe2d4324dfcaecaryclark@google.com int lesser = index; 1293db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com while (--lesser >= 0 && equalPoints(index, lesser)) { 12949764cc6c109dba208592fe5f16447b8439375746caryclark@google.com if (activeAngleOther(lesser, done, angles)) { 1295fa4a6e964691ff9a88bc047418abe2d4324dfcaecaryclark@google.com return true; 1296fa4a6e964691ff9a88bc047418abe2d4324dfcaecaryclark@google.com } 1297fa4a6e964691ff9a88bc047418abe2d4324dfcaecaryclark@google.com } 1298db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com lesser = index; 1299fa4a6e964691ff9a88bc047418abe2d4324dfcaecaryclark@google.com do { 13009764cc6c109dba208592fe5f16447b8439375746caryclark@google.com if (activeAngleOther(index, done, angles)) { 1301fa4a6e964691ff9a88bc047418abe2d4324dfcaecaryclark@google.com return true; 1302fa4a6e964691ff9a88bc047418abe2d4324dfcaecaryclark@google.com } 1303db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com } while (++index < fTs.count() && equalPoints(index, lesser)); 1304fa4a6e964691ff9a88bc047418abe2d4324dfcaecaryclark@google.com return false; 1305fa4a6e964691ff9a88bc047418abe2d4324dfcaecaryclark@google.com } 1306fa4a6e964691ff9a88bc047418abe2d4324dfcaecaryclark@google.com 13074eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com bool activeAngleOther(int index, int& done, SkTDArray<Angle>& angles) { 1308fa4a6e964691ff9a88bc047418abe2d4324dfcaecaryclark@google.com Span* span = &fTs[index]; 1309fa4a6e964691ff9a88bc047418abe2d4324dfcaecaryclark@google.com Segment* other = span->fOther; 1310fa4a6e964691ff9a88bc047418abe2d4324dfcaecaryclark@google.com int oIndex = span->fOtherIndex; 13119764cc6c109dba208592fe5f16447b8439375746caryclark@google.com return other->activeAngleInner(oIndex, done, angles); 13129764cc6c109dba208592fe5f16447b8439375746caryclark@google.com } 1313d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com 13144eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com bool activeAngleInner(int index, int& done, SkTDArray<Angle>& angles) { 1315fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com int next = nextExactSpan(index, 1); 13169764cc6c109dba208592fe5f16447b8439375746caryclark@google.com if (next > 0) { 13174eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com Span& upSpan = fTs[index]; 13184eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com if (upSpan.fWindValue || upSpan.fOppValue) { 1319210acafc5207765e12474064aa01640d5af92770caryclark@google.com addAngle(angles, index, next); 1320f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com if (upSpan.fDone || upSpan.fUnsortableEnd) { 1321210acafc5207765e12474064aa01640d5af92770caryclark@google.com done++; 1322210acafc5207765e12474064aa01640d5af92770caryclark@google.com } else if (upSpan.fWindSum != SK_MinS32) { 1323210acafc5207765e12474064aa01640d5af92770caryclark@google.com return true; 1324210acafc5207765e12474064aa01640d5af92770caryclark@google.com } 13254eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com } else if (!upSpan.fDone) { 13264eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com upSpan.fDone = true; 13274eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com fDoneSpans++; 13289764cc6c109dba208592fe5f16447b8439375746caryclark@google.com } 1329fa4a6e964691ff9a88bc047418abe2d4324dfcaecaryclark@google.com } 1330fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com int prev = nextExactSpan(index, -1); 1331fa4a6e964691ff9a88bc047418abe2d4324dfcaecaryclark@google.com // edge leading into junction 13329764cc6c109dba208592fe5f16447b8439375746caryclark@google.com if (prev >= 0) { 13334eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com Span& downSpan = fTs[prev]; 13344eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com if (downSpan.fWindValue || downSpan.fOppValue) { 1335210acafc5207765e12474064aa01640d5af92770caryclark@google.com addAngle(angles, index, prev); 1336210acafc5207765e12474064aa01640d5af92770caryclark@google.com if (downSpan.fDone) { 1337210acafc5207765e12474064aa01640d5af92770caryclark@google.com done++; 1338210acafc5207765e12474064aa01640d5af92770caryclark@google.com } else if (downSpan.fWindSum != SK_MinS32) { 1339210acafc5207765e12474064aa01640d5af92770caryclark@google.com return true; 1340210acafc5207765e12474064aa01640d5af92770caryclark@google.com } 13414eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com } else if (!downSpan.fDone) { 13424eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com downSpan.fDone = true; 13434eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com fDoneSpans++; 13449764cc6c109dba208592fe5f16447b8439375746caryclark@google.com } 13459764cc6c109dba208592fe5f16447b8439375746caryclark@google.com } 13469764cc6c109dba208592fe5f16447b8439375746caryclark@google.com return false; 1347fa4a6e964691ff9a88bc047418abe2d4324dfcaecaryclark@google.com } 1348fa4a6e964691ff9a88bc047418abe2d4324dfcaecaryclark@google.com 134945a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com SkPoint activeLeftTop(bool onlySortable, int* firstT) const { 13508dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com SkASSERT(!done()); 135145a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com SkPoint topPt = {SK_ScalarMax, SK_ScalarMax}; 13528dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com int count = fTs.count(); 135345a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com // see if either end is not done since we want smaller Y of the pair 13548dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com bool lastDone = true; 1355f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com bool lastUnsortable = false; 135645a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com double lastT = -1; 13578dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com for (int index = 0; index < count; ++index) { 1358f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com const Span& span = fTs[index]; 135945a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com if (onlySortable && (span.fUnsortableStart || lastUnsortable)) { 1360f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com goto next; 1361f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com } 136245a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com if (span.fDone && lastDone) { 136345a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com goto next; 136445a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com } 136545a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com if (approximately_negative(span.fT - lastT)) { 136645a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com goto next; 136745a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com } 136845a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com { 136945a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com const SkPoint& xy = xyAtT(&span); 137045a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com if (topPt.fY > xy.fY || (topPt.fY == xy.fY && topPt.fX > xy.fX)) { 137145a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com topPt = xy; 137245a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com if (firstT) { 137345a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com *firstT = index; 137445a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com } 1375f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com } 137645a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com if (fVerb != SkPath::kLine_Verb && !lastDone) { 137745a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com SkPoint curveTop = (*SegmentTop[fVerb])(fPts, lastT, span.fT); 137845a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com if (topPt.fY > curveTop.fY || (topPt.fY == curveTop.fY 137945a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com && topPt.fX > curveTop.fX)) { 138045a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com topPt = curveTop; 138145a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com if (firstT) { 138245a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com *firstT = index; 138345a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com } 138445a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com } 13858dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com } 138645a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com lastT = span.fT; 13878dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com } 1388f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com next: 1389f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com lastDone = span.fDone; 1390f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com lastUnsortable = span.fUnsortableEnd; 13918dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com } 139245a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com return topPt; 13938dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com } 13948dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com 13957fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com bool activeOp(int index, int endIndex, int xorMiMask, int xorSuMask, ShapeOp op) { 13967fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com int sumMiWinding = updateWinding(endIndex, index); 13977fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com int sumSuWinding = updateOppWinding(endIndex, index); 13987fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com if (fOperand) { 13997fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com SkTSwap<int>(sumMiWinding, sumSuWinding); 14007fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com } 14017fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com int maxWinding, sumWinding, oppMaxWinding, oppSumWinding; 14027fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com return activeOp(xorMiMask, xorSuMask, index, endIndex, op, sumMiWinding, sumSuWinding, 14039f3e9a5a17a7546e1c5bfde1eb7e6e9c11870333caryclark@google.com maxWinding, sumWinding, oppMaxWinding, oppSumWinding); 14047fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com } 1405c7b4be7f110bc7b487c3c3f28d82877584e74c2fskia.committer@gmail.com 14069f3e9a5a17a7546e1c5bfde1eb7e6e9c11870333caryclark@google.com bool activeOp(int xorMiMask, int xorSuMask, int index, int endIndex, ShapeOp op, 1407c3d7d90973528527131c72549b10c2a21300e0acskia.committer@gmail.com int& sumMiWinding, int& sumSuWinding, 14087fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com int& maxWinding, int& sumWinding, int& oppMaxWinding, int& oppSumWinding) { 14097fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com setUpWindings(index, endIndex, sumMiWinding, sumSuWinding, 14107fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com maxWinding, sumWinding, oppMaxWinding, oppSumWinding); 14119f3e9a5a17a7546e1c5bfde1eb7e6e9c11870333caryclark@google.com bool miFrom; 14129f3e9a5a17a7546e1c5bfde1eb7e6e9c11870333caryclark@google.com bool miTo; 14139f3e9a5a17a7546e1c5bfde1eb7e6e9c11870333caryclark@google.com bool suFrom; 14149f3e9a5a17a7546e1c5bfde1eb7e6e9c11870333caryclark@google.com bool suTo; 14157fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com if (operand()) { 14169f3e9a5a17a7546e1c5bfde1eb7e6e9c11870333caryclark@google.com miFrom = (oppMaxWinding & xorMiMask) != 0; 14179f3e9a5a17a7546e1c5bfde1eb7e6e9c11870333caryclark@google.com miTo = (oppSumWinding & xorMiMask) != 0; 14189f3e9a5a17a7546e1c5bfde1eb7e6e9c11870333caryclark@google.com suFrom = (maxWinding & xorSuMask) != 0; 14199f3e9a5a17a7546e1c5bfde1eb7e6e9c11870333caryclark@google.com suTo = (sumWinding & xorSuMask) != 0; 14207fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com } else { 14219f3e9a5a17a7546e1c5bfde1eb7e6e9c11870333caryclark@google.com miFrom = (maxWinding & xorMiMask) != 0; 14229f3e9a5a17a7546e1c5bfde1eb7e6e9c11870333caryclark@google.com miTo = (sumWinding & xorMiMask) != 0; 14239f3e9a5a17a7546e1c5bfde1eb7e6e9c11870333caryclark@google.com suFrom = (oppMaxWinding & xorSuMask) != 0; 14249f3e9a5a17a7546e1c5bfde1eb7e6e9c11870333caryclark@google.com suTo = (oppSumWinding & xorSuMask) != 0; 14257fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com } 14269f3e9a5a17a7546e1c5bfde1eb7e6e9c11870333caryclark@google.com bool result = gActiveEdge[op][miFrom][miTo][suFrom][suTo]; 1427beda389e646d6be3cfef853584a78ca8ba39d0fccaryclark@google.com#if DEBUG_ACTIVE_OP 1428beda389e646d6be3cfef853584a78ca8ba39d0fccaryclark@google.com SkDebugf("%s op=%s miFrom=%d miTo=%d suFrom=%d suTo=%d result=%d\n", __FUNCTION__, 1429beda389e646d6be3cfef853584a78ca8ba39d0fccaryclark@google.com kShapeOpStr[op], miFrom, miTo, suFrom, suTo, result); 1430beda389e646d6be3cfef853584a78ca8ba39d0fccaryclark@google.com#endif 14319f3e9a5a17a7546e1c5bfde1eb7e6e9c11870333caryclark@google.com SkASSERT(result != -1); 14329f3e9a5a17a7546e1c5bfde1eb7e6e9c11870333caryclark@google.com return result; 14337fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com } 14347fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com 1435d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com bool activeWinding(int index, int endIndex) { 1436d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com int sumWinding = updateWinding(endIndex, index); 1437d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com int maxWinding; 1438d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com return activeWinding(index, endIndex, maxWinding, sumWinding); 1439d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com } 1440d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com 1441d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com bool activeWinding(int index, int endIndex, int& maxWinding, int& sumWinding) { 1442d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com setUpWinding(index, endIndex, maxWinding, sumWinding); 1443d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com bool from = maxWinding != 0; 1444d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com bool to = sumWinding != 0; 1445d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com bool result = gUnaryActiveEdge[from][to]; 1446d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com SkASSERT(result != -1); 1447d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com return result; 1448d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com } 1449d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com 14508dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com void addAngle(SkTDArray<Angle>& angles, int start, int end) const { 1451b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com SkASSERT(start != end); 14523350c3c68ab75cd08721da3a938b8d2b10096d70caryclark@google.com Angle* angle = angles.append(); 14536aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com#if DEBUG_ANGLE 145431143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com if (angles.count() > 1 && !fTs[start].fTiny) { 14556aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com SkPoint angle0Pt, newPt; 14566aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com (*SegmentXYAtT[angles[0].verb()])(angles[0].pts(), 14576aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com (*angles[0].spans())[angles[0].start()].fT, &angle0Pt); 14586aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com (*SegmentXYAtT[fVerb])(fPts, fTs[start].fT, &newPt); 14596d0032a8ec680221c2a704cac2391f2a2d77546fcaryclark@google.com SkASSERT(AlmostEqualUlps(angle0Pt.fX, newPt.fX)); 14606d0032a8ec680221c2a704cac2391f2a2d77546fcaryclark@google.com SkASSERT(AlmostEqualUlps(angle0Pt.fY, newPt.fY)); 14616aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com } 14623350c3c68ab75cd08721da3a938b8d2b10096d70caryclark@google.com#endif 14636aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com angle->set(fPts, fVerb, this, start, end, fTs); 1464fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 1465a833b5c40d0516237e0889fce8af44880423fc20caryclark@google.com 14662ddff9388694263c7be9347de7eb768cd0847997caryclark@google.com void addCancelOutsides(double tStart, double oStart, Segment& other, 1467cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com double oEnd) { 1468cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com int tIndex = -1; 1469cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com int tCount = fTs.count(); 1470cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com int oIndex = -1; 1471cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com int oCount = other.fTs.count(); 1472cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com do { 1473cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com ++tIndex; 14743350c3c68ab75cd08721da3a938b8d2b10096d70caryclark@google.com } while (!approximately_negative(tStart - fTs[tIndex].fT) && tIndex < tCount); 1475cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com int tIndexStart = tIndex; 1476cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com do { 1477cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com ++oIndex; 14783350c3c68ab75cd08721da3a938b8d2b10096d70caryclark@google.com } while (!approximately_negative(oStart - other.fTs[oIndex].fT) && oIndex < oCount); 1479cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com int oIndexStart = oIndex; 1480cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com double nextT; 1481cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com do { 1482cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com nextT = fTs[++tIndex].fT; 14833350c3c68ab75cd08721da3a938b8d2b10096d70caryclark@google.com } while (nextT < 1 && approximately_negative(nextT - tStart)); 1484cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com double oNextT; 1485cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com do { 1486cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com oNextT = other.fTs[++oIndex].fT; 14873350c3c68ab75cd08721da3a938b8d2b10096d70caryclark@google.com } while (oNextT < 1 && approximately_negative(oNextT - oStart)); 1488cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com // at this point, spans before and after are at: 1489cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com // fTs[tIndexStart - 1], fTs[tIndexStart], fTs[tIndex] 1490cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com // if tIndexStart == 0, no prior span 1491cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com // if nextT == 1, no following span 1492d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com 1493cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com // advance the span with zero winding 1494cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com // if the following span exists (not past the end, non-zero winding) 1495cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com // connect the two edges 1496cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com if (!fTs[tIndexStart].fWindValue) { 1497cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com if (tIndexStart > 0 && fTs[tIndexStart - 1].fWindValue) { 1498cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com #if DEBUG_CONCIDENT 1499cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com SkDebugf("%s 1 this=%d other=%d t [%d] %1.9g (%1.9g,%1.9g)\n", 1500cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com __FUNCTION__, fID, other.fID, tIndexStart - 1, 150127c449af06cd1d05db441593d08b84f3530fba52caryclark@google.com fTs[tIndexStart].fT, xyAtT(tIndexStart).fX, 150227c449af06cd1d05db441593d08b84f3530fba52caryclark@google.com xyAtT(tIndexStart).fY); 1503cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com #endif 150445a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com addTPair(fTs[tIndexStart].fT, other, other.fTs[oIndex].fT, false, 150545a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com fTs[tIndexStart].fPt); 1506cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com } 1507cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com if (nextT < 1 && fTs[tIndex].fWindValue) { 1508cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com #if DEBUG_CONCIDENT 1509cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com SkDebugf("%s 2 this=%d other=%d t [%d] %1.9g (%1.9g,%1.9g)\n", 1510cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com __FUNCTION__, fID, other.fID, tIndex, 1511cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com fTs[tIndex].fT, xyAtT(tIndex).fX, 1512cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com xyAtT(tIndex).fY); 1513cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com #endif 151445a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com addTPair(fTs[tIndex].fT, other, other.fTs[oIndexStart].fT, false, fTs[tIndex].fPt); 1515cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com } 1516cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com } else { 1517cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com SkASSERT(!other.fTs[oIndexStart].fWindValue); 1518cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com if (oIndexStart > 0 && other.fTs[oIndexStart - 1].fWindValue) { 1519cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com #if DEBUG_CONCIDENT 1520cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com SkDebugf("%s 3 this=%d other=%d t [%d] %1.9g (%1.9g,%1.9g)\n", 1521cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com __FUNCTION__, fID, other.fID, oIndexStart - 1, 152227c449af06cd1d05db441593d08b84f3530fba52caryclark@google.com other.fTs[oIndexStart].fT, other.xyAtT(oIndexStart).fX, 152327c449af06cd1d05db441593d08b84f3530fba52caryclark@google.com other.xyAtT(oIndexStart).fY); 152427c449af06cd1d05db441593d08b84f3530fba52caryclark@google.com other.debugAddTPair(other.fTs[oIndexStart].fT, *this, fTs[tIndex].fT); 1525cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com #endif 1526cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com } 1527cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com if (oNextT < 1 && other.fTs[oIndex].fWindValue) { 1528cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com #if DEBUG_CONCIDENT 1529cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com SkDebugf("%s 4 this=%d other=%d t [%d] %1.9g (%1.9g,%1.9g)\n", 1530cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com __FUNCTION__, fID, other.fID, oIndex, 1531cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com other.fTs[oIndex].fT, other.xyAtT(oIndex).fX, 1532cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com other.xyAtT(oIndex).fY); 1533cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com other.debugAddTPair(other.fTs[oIndex].fT, *this, fTs[tIndexStart].fT); 1534cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com #endif 1535cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com } 1536cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com } 1537cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com } 1538d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com 1539cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com void addCoinOutsides(const SkTDArray<double>& outsideTs, Segment& other, 1540cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com double oEnd) { 1541cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com // walk this to outsideTs[0] 1542cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com // walk other to outsideTs[1] 1543cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com // if either is > 0, add a pointer to the other, copying adjacent winding 1544cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com int tIndex = -1; 1545cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com int oIndex = -1; 1546cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com double tStart = outsideTs[0]; 1547cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com double oStart = outsideTs[1]; 1548cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com do { 1549cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com ++tIndex; 15503350c3c68ab75cd08721da3a938b8d2b10096d70caryclark@google.com } while (!approximately_negative(tStart - fTs[tIndex].fT)); 155145a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com SkPoint ptStart = fTs[tIndex].fPt; 1552cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com do { 1553cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com ++oIndex; 15543350c3c68ab75cd08721da3a938b8d2b10096d70caryclark@google.com } while (!approximately_negative(oStart - other.fTs[oIndex].fT)); 15554eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com if (tIndex > 0 || oIndex > 0 || fOperand != other.fOperand) { 155645a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com addTPair(tStart, other, oStart, false, ptStart); 1557cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com } 1558cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com tStart = fTs[tIndex].fT; 1559cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com oStart = other.fTs[oIndex].fT; 1560cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com do { 1561cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com double nextT; 1562cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com do { 1563cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com nextT = fTs[++tIndex].fT; 15643350c3c68ab75cd08721da3a938b8d2b10096d70caryclark@google.com } while (approximately_negative(nextT - tStart)); 1565cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com tStart = nextT; 156645a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com ptStart = fTs[tIndex].fPt; 1567cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com do { 1568cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com nextT = other.fTs[++oIndex].fT; 15693350c3c68ab75cd08721da3a938b8d2b10096d70caryclark@google.com } while (approximately_negative(nextT - oStart)); 1570cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com oStart = nextT; 15714eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com if (tStart == 1 && oStart == 1 && fOperand == other.fOperand) { 1572cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com break; 1573cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com } 157445a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com addTPair(tStart, other, oStart, false, ptStart); 15753350c3c68ab75cd08721da3a938b8d2b10096d70caryclark@google.com } while (tStart < 1 && oStart < 1 && !approximately_negative(oEnd - oStart)); 1576cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com } 1577d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com 15784eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com void addCubic(const SkPoint pts[4], bool operand, bool evenOdd) { 15794eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com init(pts, SkPath::kCubic_Verb, operand, evenOdd); 1580fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com fBounds.setCubicBounds(pts); 1581fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 1582549c93ef979aeb4dcb65b3d0fca4b58e8ab62227skia.committer@gmail.com 1583f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com /* SkPoint */ void addCurveTo(int start, int end, PathWrapper& path, bool active) const { 15841577e8f9c5bc8436cc71d3438c6d0b9f02c38338caryclark@google.com SkPoint edge[4]; 1585f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com const SkPoint* ePtr; 1586f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com int lastT = fTs.count() - 1; 1587f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com if (lastT < 0 || (start == 0 && end == lastT) || (start == lastT && end == 0)) { 1588f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com ePtr = fPts; 1589f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com } else { 15908dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com // OPTIMIZE? if not active, skip remainder and return xy_at_t(end) 1591c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com subDivide(start, end, edge); 1592f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com ePtr = edge; 1593f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com } 15948dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com if (active) { 1595f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com bool reverse = ePtr == fPts && start != 0; 1596f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com if (reverse) { 1597f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com path.deferredMoveLine(ePtr[fVerb]); 1598f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com switch (fVerb) { 1599f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com case SkPath::kLine_Verb: 1600f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com path.deferredLine(ePtr[0]); 1601f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com break; 1602f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com case SkPath::kQuad_Verb: 1603f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com path.quadTo(ePtr[1], ePtr[0]); 1604f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com break; 1605f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com case SkPath::kCubic_Verb: 1606f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com path.cubicTo(ePtr[2], ePtr[1], ePtr[0]); 1607f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com break; 1608f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com default: 1609f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com SkASSERT(0); 1610f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com } 1611f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com // return ePtr[0]; 1612f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com } else { 1613f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com path.deferredMoveLine(ePtr[0]); 1614f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com switch (fVerb) { 1615f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com case SkPath::kLine_Verb: 1616f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com path.deferredLine(ePtr[1]); 1617f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com break; 1618f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com case SkPath::kQuad_Verb: 1619f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com path.quadTo(ePtr[1], ePtr[2]); 1620f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com break; 1621f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com case SkPath::kCubic_Verb: 1622f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com path.cubicTo(ePtr[1], ePtr[2], ePtr[3]); 1623f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com break; 1624f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com default: 1625f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com SkASSERT(0); 1626f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com } 16278dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com } 16281577e8f9c5bc8436cc71d3438c6d0b9f02c38338caryclark@google.com } 1629f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com // return ePtr[fVerb]; 16301577e8f9c5bc8436cc71d3438c6d0b9f02c38338caryclark@google.com } 16311577e8f9c5bc8436cc71d3438c6d0b9f02c38338caryclark@google.com 16324eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com void addLine(const SkPoint pts[2], bool operand, bool evenOdd) { 16334eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com init(pts, SkPath::kLine_Verb, operand, evenOdd); 1634fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com fBounds.set(pts, 2); 1635fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 1636a833b5c40d0516237e0889fce8af44880423fc20caryclark@google.com 1637f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com#if 0 1638f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com const SkPoint& addMoveTo(int tIndex, PathWrapper& path, bool active) const { 16398dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com const SkPoint& pt = xyAtT(tIndex); 16408dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com if (active) { 1641f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com path.deferredMove(pt); 16428dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com } 164388f7d0cb09707355bc9079d4b0569537e8048fa9caryclark@google.com return pt; 16441577e8f9c5bc8436cc71d3438c6d0b9f02c38338caryclark@google.com } 1645f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com#endif 16461577e8f9c5bc8436cc71d3438c6d0b9f02c38338caryclark@google.com 1647fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com // add 2 to edge or out of range values to get T extremes 1648b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com void addOtherT(int index, double otherT, int otherIndex) { 1649b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com Span& span = fTs[index]; 1650f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com #if PIN_ADD_T 1651185c7c47983dde02b5542cf45fe3fc58a3ecb055caryclark@google.com if (precisely_less_than_zero(otherT)) { 1652185c7c47983dde02b5542cf45fe3fc58a3ecb055caryclark@google.com otherT = 0; 1653185c7c47983dde02b5542cf45fe3fc58a3ecb055caryclark@google.com } else if (precisely_greater_than_one(otherT)) { 1654185c7c47983dde02b5542cf45fe3fc58a3ecb055caryclark@google.com otherT = 1; 1655185c7c47983dde02b5542cf45fe3fc58a3ecb055caryclark@google.com } 1656f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com #endif 1657b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com span.fOtherT = otherT; 1658b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com span.fOtherIndex = otherIndex; 1659fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 1660a833b5c40d0516237e0889fce8af44880423fc20caryclark@google.com 16614eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com void addQuad(const SkPoint pts[3], bool operand, bool evenOdd) { 16624eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com init(pts, SkPath::kQuad_Verb, operand, evenOdd); 1663fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com fBounds.setQuadBounds(pts); 1664fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 1665d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com 16668dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com // Defer all coincident edge processing until 16678dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com // after normal intersections have been computed 16688dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com 16698dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com// no need to be tricky; insert in normal T order 16708dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com// resolve overlapping ts when considering coincidence later 1671a833b5c40d0516237e0889fce8af44880423fc20caryclark@google.com 16728dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com // add non-coincident intersection. Resulting edges are sorted in T. 16737ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com int addT(Segment* other, const SkPoint& pt, double& newT) { 167415fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com // FIXME: in the pathological case where there is a ton of intercepts, 167515fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com // binary search? 167615fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com int insertedAt = -1; 167715fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com size_t tCount = fTs.count(); 1678f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com #if PIN_ADD_T 1679c899ad9c7fa28234d99479ab09afb6866bbd8dc3caryclark@google.com // FIXME: only do this pinning here (e.g. this is done also in quad/line intersect) 1680185c7c47983dde02b5542cf45fe3fc58a3ecb055caryclark@google.com if (precisely_less_than_zero(newT)) { 1681c899ad9c7fa28234d99479ab09afb6866bbd8dc3caryclark@google.com newT = 0; 1682185c7c47983dde02b5542cf45fe3fc58a3ecb055caryclark@google.com } else if (precisely_greater_than_one(newT)) { 1683c899ad9c7fa28234d99479ab09afb6866bbd8dc3caryclark@google.com newT = 1; 1684c899ad9c7fa28234d99479ab09afb6866bbd8dc3caryclark@google.com } 1685f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com #endif 16868dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com for (size_t index = 0; index < tCount; ++index) { 168715fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com // OPTIMIZATION: if there are three or more identical Ts, then 168815fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com // the fourth and following could be further insertion-sorted so 168915fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com // that all the edges are clockwise or counterclockwise. 169015fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com // This could later limit segment tests to the two adjacent 169115fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com // neighbors, although it doesn't help with determining which 169215fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com // circular direction to go in. 16938dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com if (newT < fTs[index].fT) { 16948dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com insertedAt = index; 16958dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com break; 169615fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com } 169715fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com } 16988dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com Span* span; 16998dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com if (insertedAt >= 0) { 17008dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com span = fTs.insert(insertedAt); 17018dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com } else { 17028dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com insertedAt = tCount; 17038dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com span = fTs.append(); 17048dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com } 170515fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com span->fT = newT; 17068dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com span->fOther = other; 170745a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com span->fPt = pt; 17088dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com span->fWindSum = SK_MinS32; 170931143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com span->fOppSum = SK_MinS32; 17108dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com span->fWindValue = 1; 171157cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com span->fOppValue = 0; 1712f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com span->fTiny = false; 17134aaaaeace7e617ddc473645756fb7c20790bc270caryclark@google.com span->fLoop = false; 17148dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com if ((span->fDone = newT == 1)) { 171565f9f0a1664a9cb38157ccfbcc3e0e936af0a58ecaryclark@google.com ++fDoneSpans; 1716d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com } 1717c91dfe417a51f73c28ecf2708df1e0bee942c6eacaryclark@google.com span->fUnsortableStart = false; 1718c91dfe417a51f73c28ecf2708df1e0bee942c6eacaryclark@google.com span->fUnsortableEnd = false; 17198f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com int less = -1; 17207ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com while (&span[less + 1] - fTs.begin() > 0 && xyAtT(&span[less]) == xyAtT(span)) { 17217ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com#if 1 17227ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com if (span[less].fDone) { 17237ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com break; 17247ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com } 1725c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com double tInterval = newT - span[less].fT; 1726c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com if (precisely_negative(tInterval)) { 1727c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com break; 1728c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com } 1729c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com if (fVerb == SkPath::kCubic_Verb) { 1730c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com double tMid = newT - tInterval / 2; 1731c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com _Point midPt; 1732c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com CubicXYAtT(fPts, tMid, &midPt); 1733c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com if (!midPt.approximatelyEqual(xyAtT(span))) { 1734c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com break; 1735c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com } 1736c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com } 17378f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com span[less].fTiny = true; 17388f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com span[less].fDone = true; 17398f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com if (approximately_negative(newT - span[less].fT)) { 17400b7da433fe0eaa2833d1b2900715b013b36d93dacaryclark@google.com if (approximately_greater_than_one(newT)) { 17418f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com span[less].fUnsortableStart = true; 17428f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com span[less - 1].fUnsortableEnd = true; 17430b7da433fe0eaa2833d1b2900715b013b36d93dacaryclark@google.com } 17448f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com if (approximately_less_than_zero(span[less].fT)) { 17458f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com span[less + 1].fUnsortableStart = true; 17468f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com span[less].fUnsortableEnd = true; 17470b7da433fe0eaa2833d1b2900715b013b36d93dacaryclark@google.com } 17480b7da433fe0eaa2833d1b2900715b013b36d93dacaryclark@google.com } 1749f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com ++fDoneSpans; 17507ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com#else 17517ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com double tInterval = newT - span[less].fT; 17527ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com if (precisely_negative(tInterval)) { 17537ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com break; 17547ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com } 17557ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com if (fVerb == SkPath::kCubic_Verb) { 17567ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com double tMid = newT - tInterval / 2; 17577ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com _Point midPt; 17587ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com CubicXYAtT(fPts, tMid, &midPt); 17597ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com if (!midPt.approximatelyEqual(xyAtT(span))) { 17607ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com break; 17617ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com } 17627ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com } 17637ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com SkASSERT(span[less].fDone == span->fDone); 17647ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com if (span[less].fT == 0) { 17657ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com span->fT = newT = 0; 17667ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com } else { 17677ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com setSpanT(less, newT); 17687ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com } 17697ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com#endif 17708f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com --less; 17718f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com } 17728f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com int more = 1; 17737ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com while (fTs.end() - &span[more - 1] > 1 && xyAtT(&span[more]) == xyAtT(span)) { 17747ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com#if 1 17757ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com if (span[more - 1].fDone) { 17767ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com break; 17777ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com } 1778c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com double tEndInterval = span[more].fT - newT; 1779c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com if (precisely_negative(tEndInterval)) { 1780c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com break; 1781c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com } 1782c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com if (fVerb == SkPath::kCubic_Verb) { 1783c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com double tMid = newT - tEndInterval / 2; 1784c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com _Point midEndPt; 1785c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com CubicXYAtT(fPts, tMid, &midEndPt); 1786c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com if (!midEndPt.approximatelyEqual(xyAtT(span))) { 1787c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com break; 1788c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com } 1789c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com } 17908f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com span[more - 1].fTiny = true; 17918f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com span[more - 1].fDone = true; 17928f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com if (approximately_negative(span[more].fT - newT)) { 17938f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com if (approximately_greater_than_one(span[more].fT)) { 17948f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com span[more + 1].fUnsortableStart = true; 17958f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com span[more].fUnsortableEnd = true; 17960b7da433fe0eaa2833d1b2900715b013b36d93dacaryclark@google.com } 17970b7da433fe0eaa2833d1b2900715b013b36d93dacaryclark@google.com if (approximately_less_than_zero(newT)) { 17988f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com span[more].fUnsortableStart = true; 17998f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com span[more - 1].fUnsortableEnd = true; 18000b7da433fe0eaa2833d1b2900715b013b36d93dacaryclark@google.com } 18010b7da433fe0eaa2833d1b2900715b013b36d93dacaryclark@google.com } 1802f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com ++fDoneSpans; 18037ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com#else 18047ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com double tEndInterval = span[more].fT - newT; 18057ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com if (precisely_negative(tEndInterval)) { 18067ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com break; 18077ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com } 18087ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com if (fVerb == SkPath::kCubic_Verb) { 18097ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com double tMid = newT - tEndInterval / 2; 18107ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com _Point midEndPt; 18117ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com CubicXYAtT(fPts, tMid, &midEndPt); 18127ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com if (!midEndPt.approximatelyEqual(xyAtT(span))) { 18137ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com break; 18147ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com } 18157ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com } 18167ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com SkASSERT(span[more - 1].fDone == span[more].fDone); 18177ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com if (newT == 0) { 18187ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com setSpanT(more, 0); 18197ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com } else { 18207ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com span->fT = newT = span[more].fT; 18217ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com } 18227ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com#endif 18238f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com ++more; 1824f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com } 182515fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com return insertedAt; 182615fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com } 182715fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com 18288dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com // set spans from start to end to decrement by one 18298dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com // note this walks other backwards 18308dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com // FIMXE: there's probably an edge case that can be constructed where 18318dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com // two span in one segment are separated by float epsilon on one span but 18328dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com // not the other, if one segment is very small. For this 18338dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com // case the counts asserted below may or may not be enough to separate the 18342ddff9388694263c7be9347de7eb768cd0847997caryclark@google.com // spans. Even if the counts work out, what if the spans aren't correctly 18358dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com // sorted? It feels better in such a case to match the span's other span 18368dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com // pointer since both coincident segments must contain the same spans. 18378dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com void addTCancel(double startT, double endT, Segment& other, 18388dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com double oStartT, double oEndT) { 18393350c3c68ab75cd08721da3a938b8d2b10096d70caryclark@google.com SkASSERT(!approximately_negative(endT - startT)); 18403350c3c68ab75cd08721da3a938b8d2b10096d70caryclark@google.com SkASSERT(!approximately_negative(oEndT - oStartT)); 1841235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com bool binary = fOperand != other.fOperand; 18428dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com int index = 0; 18433350c3c68ab75cd08721da3a938b8d2b10096d70caryclark@google.com while (!approximately_negative(startT - fTs[index].fT)) { 18448dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com ++index; 18458dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com } 1846b973801328ef25105f7f3255ab912a1b675da056caryclark@google.com int oIndex = other.fTs.count(); 18473350c3c68ab75cd08721da3a938b8d2b10096d70caryclark@google.com while (approximately_positive(other.fTs[--oIndex].fT - oEndT)) 18488dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com ; 184959823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com double tRatio = (oEndT - oStartT) / (endT - startT); 18508dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com Span* test = &fTs[index]; 18518dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com Span* oTest = &other.fTs[oIndex]; 185218063441c23b334ab2ee7075c39ceeb8378e6fcfcaryclark@google.com SkTDArray<double> outsideTs; 185318063441c23b334ab2ee7075c39ceeb8378e6fcfcaryclark@google.com SkTDArray<double> oOutsideTs; 18548dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com do { 185531143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com bool decrement = test->fWindValue && oTest->fWindValue && !binary; 1856cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com bool track = test->fWindValue || oTest->fWindValue; 1857200c211d34b11a4a988fc2549df3c17ae6875899caryclark@google.com double testT = test->fT; 1858200c211d34b11a4a988fc2549df3c17ae6875899caryclark@google.com double oTestT = oTest->fT; 1859200c211d34b11a4a988fc2549df3c17ae6875899caryclark@google.com Span* span = test; 18608dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com do { 18618dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com if (decrement) { 186231143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com decrementSpan(span); 1863200c211d34b11a4a988fc2549df3c17ae6875899caryclark@google.com } else if (track && span->fT < 1 && oTestT < 1) { 1864200c211d34b11a4a988fc2549df3c17ae6875899caryclark@google.com TrackOutside(outsideTs, span->fT, oTestT); 18658dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com } 1866200c211d34b11a4a988fc2549df3c17ae6875899caryclark@google.com span = &fTs[++index]; 18673350c3c68ab75cd08721da3a938b8d2b10096d70caryclark@google.com } while (approximately_negative(span->fT - testT)); 1868200c211d34b11a4a988fc2549df3c17ae6875899caryclark@google.com Span* oSpan = oTest; 186959823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com double otherTMatchStart = oEndT - (span->fT - startT) * tRatio; 187059823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com double otherTMatchEnd = oEndT - (test->fT - startT) * tRatio; 187159823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com SkDEBUGCODE(int originalWindValue = oSpan->fWindValue); 18723350c3c68ab75cd08721da3a938b8d2b10096d70caryclark@google.com while (approximately_negative(otherTMatchStart - oSpan->fT) 18733350c3c68ab75cd08721da3a938b8d2b10096d70caryclark@google.com && !approximately_negative(otherTMatchEnd - oSpan->fT)) { 187403f970652e07c6832cae41fa374cb68ca80d472ccaryclark@google.com #ifdef SK_DEBUG 187559823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com SkASSERT(originalWindValue == oSpan->fWindValue); 187603f970652e07c6832cae41fa374cb68ca80d472ccaryclark@google.com #endif 18778dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com if (decrement) { 1878200c211d34b11a4a988fc2549df3c17ae6875899caryclark@google.com other.decrementSpan(oSpan); 1879200c211d34b11a4a988fc2549df3c17ae6875899caryclark@google.com } else if (track && oSpan->fT < 1 && testT < 1) { 1880200c211d34b11a4a988fc2549df3c17ae6875899caryclark@google.com TrackOutside(oOutsideTs, oSpan->fT, testT); 18818dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com } 18828dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com if (!oIndex) { 18838dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com break; 18848dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com } 1885200c211d34b11a4a988fc2549df3c17ae6875899caryclark@google.com oSpan = &other.fTs[--oIndex]; 1886d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com } 1887200c211d34b11a4a988fc2549df3c17ae6875899caryclark@google.com test = span; 1888200c211d34b11a4a988fc2549df3c17ae6875899caryclark@google.com oTest = oSpan; 18893350c3c68ab75cd08721da3a938b8d2b10096d70caryclark@google.com } while (!approximately_negative(endT - test->fT)); 18903350c3c68ab75cd08721da3a938b8d2b10096d70caryclark@google.com SkASSERT(!oIndex || approximately_negative(oTest->fT - oStartT)); 189118063441c23b334ab2ee7075c39ceeb8378e6fcfcaryclark@google.com // FIXME: determine if canceled edges need outside ts added 1892cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com if (!done() && outsideTs.count()) { 18932ddff9388694263c7be9347de7eb768cd0847997caryclark@google.com double tStart = outsideTs[0]; 18942ddff9388694263c7be9347de7eb768cd0847997caryclark@google.com double oStart = outsideTs[1]; 18952ddff9388694263c7be9347de7eb768cd0847997caryclark@google.com addCancelOutsides(tStart, oStart, other, oEndT); 18962ddff9388694263c7be9347de7eb768cd0847997caryclark@google.com int count = outsideTs.count(); 18972ddff9388694263c7be9347de7eb768cd0847997caryclark@google.com if (count > 2) { 18982ddff9388694263c7be9347de7eb768cd0847997caryclark@google.com double tStart = outsideTs[count - 2]; 18992ddff9388694263c7be9347de7eb768cd0847997caryclark@google.com double oStart = outsideTs[count - 1]; 19002ddff9388694263c7be9347de7eb768cd0847997caryclark@google.com addCancelOutsides(tStart, oStart, other, oEndT); 19012ddff9388694263c7be9347de7eb768cd0847997caryclark@google.com } 190218063441c23b334ab2ee7075c39ceeb8378e6fcfcaryclark@google.com } 1903cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com if (!other.done() && oOutsideTs.count()) { 19042ddff9388694263c7be9347de7eb768cd0847997caryclark@google.com double tStart = oOutsideTs[0]; 19052ddff9388694263c7be9347de7eb768cd0847997caryclark@google.com double oStart = oOutsideTs[1]; 19062ddff9388694263c7be9347de7eb768cd0847997caryclark@google.com other.addCancelOutsides(tStart, oStart, *this, endT); 190718063441c23b334ab2ee7075c39ceeb8378e6fcfcaryclark@google.com } 19088dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com } 1909631cdcb4a6b926b6447f328b81911a4499fb3698skia.committer@gmail.com 19104aaaaeace7e617ddc473645756fb7c20790bc270caryclark@google.com int addSelfT(Segment* other, const SkPoint& pt, double& newT) { 19114aaaaeace7e617ddc473645756fb7c20790bc270caryclark@google.com int result = addT(other, pt, newT); 19124aaaaeace7e617ddc473645756fb7c20790bc270caryclark@google.com Span* span = &fTs[result]; 19134aaaaeace7e617ddc473645756fb7c20790bc270caryclark@google.com span->fLoop = true; 19144aaaaeace7e617ddc473645756fb7c20790bc270caryclark@google.com return result; 19154aaaaeace7e617ddc473645756fb7c20790bc270caryclark@google.com } 191615dd300ac6d7695b4d2aca81d8f3648eae704451skia.committer@gmail.com 19177ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com int addUnsortableT(Segment* other, bool start, const SkPoint& pt, double& newT) { 19187ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com int result = addT(other, pt, newT); 191973ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com Span* span = &fTs[result]; 192073ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com if (start) { 192173ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com if (result > 0) { 192273ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com span[result - 1].fUnsortableEnd = true; 192373ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com } 192473ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com span[result].fUnsortableStart = true; 192573ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com } else { 192673ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com span[result].fUnsortableEnd = true; 192773ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com if (result + 1 < fTs.count()) { 192873ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com span[result + 1].fUnsortableStart = true; 192973ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com } 193073ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com } 193173ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com return result; 193273ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com } 1933b3b6a60d35c8ee521252367200148561c628ee42skia.committer@gmail.com 19344eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com int bumpCoincidentThis(const Span* oTest, bool opp, int index, 19354eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com SkTDArray<double>& outsideTs) { 19364eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com int oWindValue = oTest->fWindValue; 19374eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com int oOppValue = oTest->fOppValue; 19384eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com if (opp) { 19394eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com SkTSwap<int>(oWindValue, oOppValue); 19404eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com } 194157cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com Span* const test = &fTs[index]; 194257cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com Span* end = test; 194357cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com const double oStartT = oTest->fT; 194457cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com do { 19454eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com if (bumpSpan(end, oWindValue, oOppValue)) { 19464eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com TrackOutside(outsideTs, end->fT, oStartT); 194757cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com } 194857cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com end = &fTs[++index]; 194957cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com } while (approximately_negative(end->fT - test->fT)); 195057cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com return index; 195157cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com } 195257cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com 195357cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com // because of the order in which coincidences are resolved, this and other 195457cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com // may not have the same intermediate points. Compute the corresponding 195557cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com // intermediate T values (using this as the master, other as the follower) 195657cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com // and walk other conditionally -- hoping that it catches up in the end 19574eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com int bumpCoincidentOther(const Span* test, double oEndT, int& oIndex, 19584eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com SkTDArray<double>& oOutsideTs) { 195957cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com Span* const oTest = &fTs[oIndex]; 196057cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com Span* oEnd = oTest; 196157cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com const double startT = test->fT; 196257cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com const double oStartT = oTest->fT; 196357cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com while (!approximately_negative(oEndT - oEnd->fT) 19644eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com && approximately_negative(oEnd->fT - oStartT)) { 19654eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com zeroSpan(oEnd); 19664eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com TrackOutside(oOutsideTs, oEnd->fT, startT); 196757cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com oEnd = &fTs[++oIndex]; 196857cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com } 196957cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com return oIndex; 197057cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com } 197157cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com 197257cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com // FIXME: need to test this case: 197357cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com // contourA has two segments that are coincident 197457cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com // contourB has two segments that are coincident in the same place 197557cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com // each ends up with +2/0 pairs for winding count 197657cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com // since logic below doesn't transfer count (only increments/decrements) can this be 197757cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com // resolved to +4/0 ? 19788dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com 19798dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com // set spans from start to end to increment the greater by one and decrement 19808dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com // the lesser 19814eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com void addTCoincident(double startT, double endT, Segment& other, double oStartT, double oEndT) { 19823350c3c68ab75cd08721da3a938b8d2b10096d70caryclark@google.com SkASSERT(!approximately_negative(endT - startT)); 19833350c3c68ab75cd08721da3a938b8d2b10096d70caryclark@google.com SkASSERT(!approximately_negative(oEndT - oStartT)); 198457cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com bool opp = fOperand ^ other.fOperand; 19858dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com int index = 0; 19863350c3c68ab75cd08721da3a938b8d2b10096d70caryclark@google.com while (!approximately_negative(startT - fTs[index].fT)) { 19878dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com ++index; 19888dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com } 19898dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com int oIndex = 0; 19903350c3c68ab75cd08721da3a938b8d2b10096d70caryclark@google.com while (!approximately_negative(oStartT - other.fTs[oIndex].fT)) { 19918dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com ++oIndex; 19928dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com } 19938dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com Span* test = &fTs[index]; 19948dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com Span* oTest = &other.fTs[oIndex]; 19958dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com SkTDArray<double> outsideTs; 19968dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com SkTDArray<double> oOutsideTs; 19978dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com do { 19984eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com // if either span has an opposite value and the operands don't match, resolve first 1999e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com // SkASSERT(!test->fDone || !oTest->fDone); 20000d3d09e5d2fd17aaed035ae23d59804b56b994ffcaryclark@google.com if (test->fDone || oTest->fDone) { 20010d3d09e5d2fd17aaed035ae23d59804b56b994ffcaryclark@google.com index = advanceCoincidentThis(oTest, opp, index); 20020d3d09e5d2fd17aaed035ae23d59804b56b994ffcaryclark@google.com oIndex = other.advanceCoincidentOther(test, oEndT, oIndex); 20030d3d09e5d2fd17aaed035ae23d59804b56b994ffcaryclark@google.com } else { 20040d3d09e5d2fd17aaed035ae23d59804b56b994ffcaryclark@google.com index = bumpCoincidentThis(oTest, opp, index, outsideTs); 20050d3d09e5d2fd17aaed035ae23d59804b56b994ffcaryclark@google.com oIndex = other.bumpCoincidentOther(test, oEndT, oIndex, oOutsideTs); 20060d3d09e5d2fd17aaed035ae23d59804b56b994ffcaryclark@google.com } 200757cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com test = &fTs[index]; 200857cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com oTest = &other.fTs[oIndex]; 20093350c3c68ab75cd08721da3a938b8d2b10096d70caryclark@google.com } while (!approximately_negative(endT - test->fT)); 20103350c3c68ab75cd08721da3a938b8d2b10096d70caryclark@google.com SkASSERT(approximately_negative(oTest->fT - oEndT)); 20113350c3c68ab75cd08721da3a938b8d2b10096d70caryclark@google.com SkASSERT(approximately_negative(oEndT - oTest->fT)); 20124eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com if (!done() && outsideTs.count()) { 20134eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com addCoinOutsides(outsideTs, other, oEndT); 20148dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com } 20158dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com if (!other.done() && oOutsideTs.count()) { 2016cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com other.addCoinOutsides(oOutsideTs, *this, endT); 20178dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com } 20188dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com } 2019d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com 2020cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com // FIXME: this doesn't prevent the same span from being added twice 2021aa35831d1d0e4c798a63fe772430adc4f3a038cdcaryclark@google.com // fix in caller, SkASSERT here? 202245a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com void addTPair(double t, Segment& other, double otherT, bool borrowWind, const SkPoint& pt) { 202347580694fbe974a065caf7c39c3d2075708c2018caryclark@google.com int tCount = fTs.count(); 2024cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com for (int tIndex = 0; tIndex < tCount; ++tIndex) { 2025cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com const Span& span = fTs[tIndex]; 20263350c3c68ab75cd08721da3a938b8d2b10096d70caryclark@google.com if (!approximately_negative(span.fT - t)) { 202747580694fbe974a065caf7c39c3d2075708c2018caryclark@google.com break; 20288dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com } 20296aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com if (approximately_negative(span.fT - t) && span.fOther == &other 20306aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com && approximately_equal(span.fOtherT, otherT)) { 2031cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com#if DEBUG_ADD_T_PAIR 2032cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com SkDebugf("%s addTPair duplicate this=%d %1.9g other=%d %1.9g\n", 2033cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com __FUNCTION__, fID, t, other.fID, otherT); 2034cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com#endif 2035cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com return; 203647580694fbe974a065caf7c39c3d2075708c2018caryclark@google.com } 2037cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com } 203847580694fbe974a065caf7c39c3d2075708c2018caryclark@google.com#if DEBUG_ADD_T_PAIR 203947580694fbe974a065caf7c39c3d2075708c2018caryclark@google.com SkDebugf("%s addTPair this=%d %1.9g other=%d %1.9g\n", 204047580694fbe974a065caf7c39c3d2075708c2018caryclark@google.com __FUNCTION__, fID, t, other.fID, otherT); 204147580694fbe974a065caf7c39c3d2075708c2018caryclark@google.com#endif 20427ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com int insertedAt = addT(&other, pt, t); 20437ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com int otherInsertedAt = other.addT(this, pt, otherT); 20448dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com addOtherT(insertedAt, otherT, otherInsertedAt); 2045b973801328ef25105f7f3255ab912a1b675da056caryclark@google.com other.addOtherT(otherInsertedAt, t, insertedAt); 20462ddff9388694263c7be9347de7eb768cd0847997caryclark@google.com matchWindingValue(insertedAt, t, borrowWind); 20472ddff9388694263c7be9347de7eb768cd0847997caryclark@google.com other.matchWindingValue(otherInsertedAt, otherT, borrowWind); 20488dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com } 2049d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com 20508dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com void addTwoAngles(int start, int end, SkTDArray<Angle>& angles) const { 2051b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com // add edge leading into junction 20524eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com int min = SkMin32(end, start); 20534eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com if (fTs[min].fWindValue > 0 || fTs[min].fOppValue > 0) { 20548dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com addAngle(angles, end, start); 20558dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com } 2056b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com // add edge leading away from junction 2057495f8e435b677f28913cd2adc8caa8d3d766dd17caryclark@google.com int step = SkSign32(end - start); 2058a461ff0866526bc51dbd4c4f9f066a727ec21510caryclark@google.com int tIndex = nextExactSpan(end, step); 20594eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com min = SkMin32(end, tIndex); 20604eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com if (tIndex >= 0 && (fTs[min].fWindValue > 0 || fTs[min].fOppValue > 0)) { 2061a3f05facab01712a1b58e60a70b0dbdb90a39830caryclark@google.com addAngle(angles, end, tIndex); 2062b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com } 2063b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com } 2064d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com 20650d3d09e5d2fd17aaed035ae23d59804b56b994ffcaryclark@google.com int advanceCoincidentThis(const Span* oTest, bool opp, int index) { 20660d3d09e5d2fd17aaed035ae23d59804b56b994ffcaryclark@google.com Span* const test = &fTs[index]; 20670d3d09e5d2fd17aaed035ae23d59804b56b994ffcaryclark@google.com Span* end = test; 20680d3d09e5d2fd17aaed035ae23d59804b56b994ffcaryclark@google.com do { 20690d3d09e5d2fd17aaed035ae23d59804b56b994ffcaryclark@google.com end = &fTs[++index]; 20700d3d09e5d2fd17aaed035ae23d59804b56b994ffcaryclark@google.com } while (approximately_negative(end->fT - test->fT)); 20710d3d09e5d2fd17aaed035ae23d59804b56b994ffcaryclark@google.com return index; 20720d3d09e5d2fd17aaed035ae23d59804b56b994ffcaryclark@google.com } 20730d3d09e5d2fd17aaed035ae23d59804b56b994ffcaryclark@google.com 20740d3d09e5d2fd17aaed035ae23d59804b56b994ffcaryclark@google.com int advanceCoincidentOther(const Span* test, double oEndT, int& oIndex) { 20750d3d09e5d2fd17aaed035ae23d59804b56b994ffcaryclark@google.com Span* const oTest = &fTs[oIndex]; 20760d3d09e5d2fd17aaed035ae23d59804b56b994ffcaryclark@google.com Span* oEnd = oTest; 20770d3d09e5d2fd17aaed035ae23d59804b56b994ffcaryclark@google.com const double oStartT = oTest->fT; 20780d3d09e5d2fd17aaed035ae23d59804b56b994ffcaryclark@google.com while (!approximately_negative(oEndT - oEnd->fT) 20790d3d09e5d2fd17aaed035ae23d59804b56b994ffcaryclark@google.com && approximately_negative(oEnd->fT - oStartT)) { 20800d3d09e5d2fd17aaed035ae23d59804b56b994ffcaryclark@google.com oEnd = &fTs[++oIndex]; 20810d3d09e5d2fd17aaed035ae23d59804b56b994ffcaryclark@google.com } 20820d3d09e5d2fd17aaed035ae23d59804b56b994ffcaryclark@google.com return oIndex; 20830d3d09e5d2fd17aaed035ae23d59804b56b994ffcaryclark@google.com } 2084b89a03c890668f98d9f8b269b6ad00824409435bskia.committer@gmail.com 2085db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com bool betweenTs(int lesser, double testT, int greater) { 2086db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com if (lesser > greater) { 2087db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com SkTSwap<int>(lesser, greater); 2088db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com } 2089db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com return approximately_between(fTs[lesser].fT, testT, fTs[greater].fT); 2090db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com } 20910d3d09e5d2fd17aaed035ae23d59804b56b994ffcaryclark@google.com 2092fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com const Bounds& bounds() const { 2093fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com return fBounds; 2094fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 2095a833b5c40d0516237e0889fce8af44880423fc20caryclark@google.com 209631143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com void buildAngles(int index, SkTDArray<Angle>& angles, bool includeOpp) const { 2097a3f05facab01712a1b58e60a70b0dbdb90a39830caryclark@google.com double referenceT = fTs[index].fT; 2098a3f05facab01712a1b58e60a70b0dbdb90a39830caryclark@google.com int lesser = index; 209931143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com while (--lesser >= 0 && (includeOpp || fTs[lesser].fOther->fOperand == fOperand) 210031143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com && precisely_negative(referenceT - fTs[lesser].fT)) { 2101a3f05facab01712a1b58e60a70b0dbdb90a39830caryclark@google.com buildAnglesInner(lesser, angles); 2102a3f05facab01712a1b58e60a70b0dbdb90a39830caryclark@google.com } 2103b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com do { 2104a3f05facab01712a1b58e60a70b0dbdb90a39830caryclark@google.com buildAnglesInner(index, angles); 210531143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com } while (++index < fTs.count() && (includeOpp || fTs[index].fOther->fOperand == fOperand) 210631143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com && precisely_negative(fTs[index].fT - referenceT)); 2107b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com } 2108a3f05facab01712a1b58e60a70b0dbdb90a39830caryclark@google.com 2109a3f05facab01712a1b58e60a70b0dbdb90a39830caryclark@google.com void buildAnglesInner(int index, SkTDArray<Angle>& angles) const { 21101ab0aac67247bf3ec1f23b220456d316d9a80b45caryclark@google.com const Span* span = &fTs[index]; 2111a3f05facab01712a1b58e60a70b0dbdb90a39830caryclark@google.com Segment* other = span->fOther; 2112a3f05facab01712a1b58e60a70b0dbdb90a39830caryclark@google.com // if there is only one live crossing, and no coincidence, continue 2113a3f05facab01712a1b58e60a70b0dbdb90a39830caryclark@google.com // in the same direction 2114a3f05facab01712a1b58e60a70b0dbdb90a39830caryclark@google.com // if there is coincidence, the only choice may be to reverse direction 2115a3f05facab01712a1b58e60a70b0dbdb90a39830caryclark@google.com // find edge on either side of intersection 2116a3f05facab01712a1b58e60a70b0dbdb90a39830caryclark@google.com int oIndex = span->fOtherIndex; 2117a3f05facab01712a1b58e60a70b0dbdb90a39830caryclark@google.com // if done == -1, prior span has already been processed 2118a3f05facab01712a1b58e60a70b0dbdb90a39830caryclark@google.com int step = 1; 2119a461ff0866526bc51dbd4c4f9f066a727ec21510caryclark@google.com int next = other->nextExactSpan(oIndex, step); 2120a461ff0866526bc51dbd4c4f9f066a727ec21510caryclark@google.com if (next < 0) { 2121a3f05facab01712a1b58e60a70b0dbdb90a39830caryclark@google.com step = -step; 2122a461ff0866526bc51dbd4c4f9f066a727ec21510caryclark@google.com next = other->nextExactSpan(oIndex, step); 2123a3f05facab01712a1b58e60a70b0dbdb90a39830caryclark@google.com } 2124a3f05facab01712a1b58e60a70b0dbdb90a39830caryclark@google.com // add candidate into and away from junction 2125a3f05facab01712a1b58e60a70b0dbdb90a39830caryclark@google.com other->addTwoAngles(next, oIndex, angles); 21268dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com } 21278dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com 21287fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com int computeSum(int startIndex, int endIndex, bool binary) { 2129534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com SkTDArray<Angle> angles; 2130534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com addTwoAngles(startIndex, endIndex, angles); 213131143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com buildAngles(endIndex, angles, false); 2132d1688744d537d928699b6069f99c4470a0f6e772caryclark@google.com // OPTIMIZATION: check all angles to see if any have computed wind sum 2133d1688744d537d928699b6069f99c4470a0f6e772caryclark@google.com // before sorting (early exit if none) 2134534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com SkTDArray<Angle*> sorted; 2135c91dfe417a51f73c28ecf2708df1e0bee942c6eacaryclark@google.com bool sortable = SortAngles(angles, sorted); 213603f970652e07c6832cae41fa374cb68ca80d472ccaryclark@google.com#if DEBUG_SORT 213731143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com sorted[0]->segment()->debugShowSort(__FUNCTION__, sorted, 0, 0, 0); 213803f970652e07c6832cae41fa374cb68ca80d472ccaryclark@google.com#endif 2139c91dfe417a51f73c28ecf2708df1e0bee942c6eacaryclark@google.com if (!sortable) { 2140c91dfe417a51f73c28ecf2708df1e0bee942c6eacaryclark@google.com return SK_MinS32; 2141c91dfe417a51f73c28ecf2708df1e0bee942c6eacaryclark@google.com } 2142534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com int angleCount = angles.count(); 2143534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com const Angle* angle; 2144534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com const Segment* base; 2145534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com int winding; 21467ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com int oWinding; 2147534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com int firstIndex = 0; 2148534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com do { 2149534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com angle = sorted[firstIndex]; 2150534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com base = angle->segment(); 2151534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com winding = base->windSum(angle); 2152534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com if (winding != SK_MinS32) { 21537ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com oWinding = base->oppSum(angle); 2154534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com break; 2155534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com } 2156534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com if (++firstIndex == angleCount) { 2157534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com return SK_MinS32; 2158534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com } 2159534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com } while (true); 2160534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com // turn winding into contourWinding 21612ddff9388694263c7be9347de7eb768cd0847997caryclark@google.com int spanWinding = base->spanSign(angle); 21622ddff9388694263c7be9347de7eb768cd0847997caryclark@google.com bool inner = useInnerWinding(winding + spanWinding, winding); 21632ddff9388694263c7be9347de7eb768cd0847997caryclark@google.com #if DEBUG_WINDING 216424bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com SkDebugf("%s spanWinding=%d winding=%d sign=%d inner=%d result=%d\n", __FUNCTION__, 216559823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com spanWinding, winding, angle->sign(), inner, 21662ddff9388694263c7be9347de7eb768cd0847997caryclark@google.com inner ? winding + spanWinding : winding); 21672ddff9388694263c7be9347de7eb768cd0847997caryclark@google.com #endif 21682ddff9388694263c7be9347de7eb768cd0847997caryclark@google.com if (inner) { 2169534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com winding += spanWinding; 2170534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com } 2171534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com #if DEBUG_SORT 21727ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com base->debugShowSort(__FUNCTION__, sorted, firstIndex, winding, oWinding); 2173534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com #endif 2174534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com int nextIndex = firstIndex + 1; 2175534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com int lastIndex = firstIndex != 0 ? firstIndex : angleCount; 21762ddff9388694263c7be9347de7eb768cd0847997caryclark@google.com winding -= base->spanSign(angle); 21777ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com oWinding -= base->oppSign(angle); 2178534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com do { 2179534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com if (nextIndex == angleCount) { 2180534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com nextIndex = 0; 2181534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com } 2182534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com angle = sorted[nextIndex]; 2183534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com Segment* segment = angle->segment(); 21847ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com bool opp = base->fOperand ^ segment->fOperand; 21857ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com int maxWinding, oMaxWinding; 21867ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com int spanSign = segment->spanSign(angle); 21877ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com int oppoSign = segment->oppSign(angle); 21887ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com if (opp) { 21897ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com oMaxWinding = oWinding; 21907ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com oWinding -= spanSign; 2191729e1c46cea63dfaa6e4a05608b8f3be41e19dcecaryclark@google.com maxWinding = winding; 21927ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com if (oppoSign) { 21937ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com winding -= oppoSign; 21947ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com } 21957ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com } else { 21967ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com maxWinding = winding; 21977ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com winding -= spanSign; 2198729e1c46cea63dfaa6e4a05608b8f3be41e19dcecaryclark@google.com oMaxWinding = oWinding; 21997ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com if (oppoSign) { 22007ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com oWinding -= oppoSign; 22017ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com } 22027ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com } 22037ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com if (segment->windSum(angle) == SK_MinS32) { 22047ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com if (opp) { 22057ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com if (useInnerWinding(oMaxWinding, oWinding)) { 22067ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com oMaxWinding = oWinding; 22077ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com } 22087ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com if (oppoSign && useInnerWinding(maxWinding, winding)) { 22097ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com maxWinding = winding; 22107ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com } 22114eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com (void) segment->markAndChaseWinding(angle, oMaxWinding, maxWinding); 22127ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com } else { 22137ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com if (useInnerWinding(maxWinding, winding)) { 22147ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com maxWinding = winding; 22157ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com } 22167ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com if (oppoSign && useInnerWinding(oMaxWinding, oWinding)) { 22177ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com oMaxWinding = oWinding; 22187ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com } 2219e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com (void) segment->markAndChaseWinding(angle, maxWinding, 2220e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com binary ? oMaxWinding : 0); 2221534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com } 2222534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com } 2223534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com } while (++nextIndex != lastIndex); 22246ec1526680bcc05b8b8b2c7ad9f78ba247e123b7caryclark@google.com int minIndex = SkMin32(startIndex, endIndex); 22256ec1526680bcc05b8b8b2c7ad9f78ba247e123b7caryclark@google.com return windSum(minIndex); 2226534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com } 2227b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com 22283586ece1ddbb48cabb2e7a4792be9ff5d74e40d9caryclark@google.com int crossedSpanY(const SkPoint& basePt, SkScalar& bestY, double& hitT, bool& hitSomething, 222910227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com double mid, bool opp, bool current) const { 2230db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com SkScalar bottom = fBounds.fBottom; 223110227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com int bestTIndex = -1; 2232db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com if (bottom <= bestY) { 223310227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com return bestTIndex; 2234db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com } 2235db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com SkScalar top = fBounds.fTop; 2236db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com if (top >= basePt.fY) { 223710227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com return bestTIndex; 2238db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com } 2239db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com if (fBounds.fLeft > basePt.fX) { 224010227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com return bestTIndex; 2241db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com } 2242db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com if (fBounds.fRight < basePt.fX) { 224310227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com return bestTIndex; 2244db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com } 2245db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com if (fBounds.fLeft == fBounds.fRight) { 22468f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com // if vertical, and directly above test point, wait for another one 22476d0032a8ec680221c2a704cac2391f2a2d77546fcaryclark@google.com return AlmostEqualUlps(basePt.fX, fBounds.fLeft) ? SK_MinS32 : bestTIndex; 2248db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com } 224910227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com // intersect ray starting at basePt with edge 225010227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com Intersections intersections; 225110227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com // OPTIMIZE: use specialty function that intersects ray with curve, 225210227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com // returning t values only for curve (we don't care about t on ray) 225310227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com int pts = (*VSegmentIntersect[fVerb])(fPts, top, bottom, basePt.fX, false, intersections); 225410227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com if (pts == 0 || (current && pts == 1)) { 225510227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com return bestTIndex; 225610227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com } 225710227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com if (current) { 225810227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com SkASSERT(pts > 1); 225910227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com int closestIdx = 0; 226010227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com double closest = fabs(intersections.fT[0][0] - mid); 226110227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com for (int idx = 1; idx < pts; ++idx) { 226210227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com double test = fabs(intersections.fT[0][idx] - mid); 226310227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com if (closest > test) { 226410227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com closestIdx = idx; 226510227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com closest = test; 226610227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com } 226710227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com } 226810227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com if (closestIdx < pts - 1) { 226910227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com intersections.fT[0][closestIdx] = intersections.fT[0][pts - 1]; 227010227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com } 227110227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com --pts; 227210227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com } 227310227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com double bestT = -1; 227410227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com for (int index = 0; index < pts; ++index) { 227510227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com double foundT = intersections.fT[0][index]; 22768f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com if (approximately_less_than_zero(foundT) 22778f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com || approximately_greater_than_one(foundT)) { 22788f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com continue; 22798f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com } 228010227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com SkScalar testY = (*SegmentYAtT[fVerb])(fPts, foundT); 228110227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com if (approximately_negative(testY - bestY) 228210227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com || approximately_negative(basePt.fY - testY)) { 228347580694fbe974a065caf7c39c3d2075708c2018caryclark@google.com continue; 228447580694fbe974a065caf7c39c3d2075708c2018caryclark@google.com } 228510227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com if (pts > 1 && fVerb == SkPath::kLine_Verb) { 22868f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com return SK_MinS32; // if the intersection is edge on, wait for another one 228710227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com } 22888f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com if (fVerb > SkPath::kLine_Verb) { 228910227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com SkScalar dx = (*SegmentDXAtT[fVerb])(fPts, foundT); 229010227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com if (approximately_zero(dx)) { 22918f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com return SK_MinS32; // hit vertical, wait for another one 2292235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com } 22938dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com } 229410227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com bestY = testY; 229510227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com bestT = foundT; 22963586ece1ddbb48cabb2e7a4792be9ff5d74e40d9caryclark@google.com } 229710227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com if (bestT < 0) { 229810227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com return bestTIndex; 22993586ece1ddbb48cabb2e7a4792be9ff5d74e40d9caryclark@google.com } 230010227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com SkASSERT(bestT >= 0); 230110227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com SkASSERT(bestT <= 1); 230210227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com int start; 230310227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com int end = 0; 230410227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com do { 230510227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com start = end; 230610227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com end = nextSpan(start, 1); 230710227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com } while (fTs[end].fT < bestT); 230810227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com // FIXME: see next candidate for a better pattern to find the next start/end pair 230910227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com while (start + 1 < end && fTs[start].fDone) { 231010227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com ++start; 231110227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com } 23128f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com if (!isCanceled(start)) { 231310227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com hitT = bestT; 23148f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com bestTIndex = start; 231510227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com hitSomething = true; 23163586ece1ddbb48cabb2e7a4792be9ff5d74e40d9caryclark@google.com } 231710227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com return bestTIndex; 2318495f8e435b677f28913cd2adc8caa8d3d766dd17caryclark@google.com } 231918063441c23b334ab2ee7075c39ceeb8378e6fcfcaryclark@google.com 23204eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com void decrementSpan(Span* span) { 232118063441c23b334ab2ee7075c39ceeb8378e6fcfcaryclark@google.com SkASSERT(span->fWindValue > 0); 232218063441c23b334ab2ee7075c39ceeb8378e6fcfcaryclark@google.com if (--(span->fWindValue) == 0) { 23234eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com if (!span->fOppValue && !span->fDone) { 2324f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com span->fDone = true; 2325f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com ++fDoneSpans; 2326f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com } 23274eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com } 23284eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com } 23294eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com 23304eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com bool bumpSpan(Span* span, int windDelta, int oppDelta) { 23314eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com SkASSERT(!span->fDone); 23324eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com span->fWindValue += windDelta; 23334eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com SkASSERT(span->fWindValue >= 0); 23344eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com span->fOppValue += oppDelta; 23354eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com SkASSERT(span->fOppValue >= 0); 23364eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com if (fXor) { 23374eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com span->fWindValue &= 1; 23384eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com } 23394eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com if (fOppXor) { 23404eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com span->fOppValue &= 1; 23414eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com } 23424eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com if (!span->fWindValue && !span->fOppValue) { 23434eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com span->fDone = true; 23444eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com ++fDoneSpans; 234518063441c23b334ab2ee7075c39ceeb8378e6fcfcaryclark@google.com return true; 234618063441c23b334ab2ee7075c39ceeb8378e6fcfcaryclark@google.com } 234718063441c23b334ab2ee7075c39ceeb8378e6fcfcaryclark@google.com return false; 234818063441c23b334ab2ee7075c39ceeb8378e6fcfcaryclark@google.com } 2349c7b4be7f110bc7b487c3c3f28d82877584e74c2fskia.committer@gmail.com 23500d3d09e5d2fd17aaed035ae23d59804b56b994ffcaryclark@google.com // OPTIMIZE 23510d3d09e5d2fd17aaed035ae23d59804b56b994ffcaryclark@google.com // when the edges are initially walked, they don't automatically get the prior and next 23520d3d09e5d2fd17aaed035ae23d59804b56b994ffcaryclark@google.com // edges assigned to positions t=0 and t=1. Doing that would remove the need for this check, 2353c7b4be7f110bc7b487c3c3f28d82877584e74c2fskia.committer@gmail.com // and would additionally remove the need for similar checks in condition edges. It would 23540d3d09e5d2fd17aaed035ae23d59804b56b994ffcaryclark@google.com // also allow intersection code to assume end of segment intersections (maybe?) 23550d3d09e5d2fd17aaed035ae23d59804b56b994ffcaryclark@google.com bool complete() const { 23560d3d09e5d2fd17aaed035ae23d59804b56b994ffcaryclark@google.com int count = fTs.count(); 23570d3d09e5d2fd17aaed035ae23d59804b56b994ffcaryclark@google.com return count > 1 && fTs[0].fT == 0 && fTs[--count].fT == 1; 23580d3d09e5d2fd17aaed035ae23d59804b56b994ffcaryclark@google.com } 235918063441c23b334ab2ee7075c39ceeb8378e6fcfcaryclark@google.com 236015fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com bool done() const { 2361af46cff4ee6099cebf3aa395805748af7d193a31caryclark@google.com SkASSERT(fDoneSpans <= fTs.count()); 2362af46cff4ee6099cebf3aa395805748af7d193a31caryclark@google.com return fDoneSpans == fTs.count(); 2363a833b5c40d0516237e0889fce8af44880423fc20caryclark@google.com } 2364549c93ef979aeb4dcb65b3d0fca4b58e8ab62227skia.committer@gmail.com 2365f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com bool done(int min) const { 2366f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com return fTs[min].fDone; 2367f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com } 2368a833b5c40d0516237e0889fce8af44880423fc20caryclark@google.com 23697fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com bool done(const Angle* angle) const { 23707fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com return done(SkMin32(angle->start(), angle->end())); 237147580694fbe974a065caf7c39c3d2075708c2018caryclark@google.com } 2372044679ef8c08e1f01afadf5bc08251fe8597df81skia.committer@gmail.com 23737ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com SkVector dxdy(int index) const { 237445a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com return (*SegmentDXDYAtT[fVerb])(fPts, fTs[index].fT); 237545a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com } 237645a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com 237745a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com SkScalar dy(int index) const { 237845a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com return (*SegmentDYAtT[fVerb])(fPts, fTs[index].fT); 237945a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com } 238024c29d91caa4eaa31f9e77bad614627a252df35eskia.committer@gmail.com 2381db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com bool equalPoints(int greaterTIndex, int lesserTIndex) { 2382db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com SkASSERT(greaterTIndex >= lesserTIndex); 2383db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com double greaterT = fTs[greaterTIndex].fT; 2384db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com double lesserT = fTs[lesserTIndex].fT; 2385db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com if (greaterT == lesserT) { 2386db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com return true; 2387db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com } 2388db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com if (!approximately_negative(greaterT - lesserT)) { 2389db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com return false; 2390db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com } 2391db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com return xyAtT(greaterTIndex) == xyAtT(lesserTIndex); 2392db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com } 2393db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com 23947fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com /* 23957fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com The M and S variable name parts stand for the operators. 23967fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com Mi stands for Minuend (see wiki subtraction, analogous to difference) 23977fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com Su stands for Subtrahend 23987fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com The Opp variable name part designates that the value is for the Opposite operator. 23997fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com Opposite values result from combining coincident spans. 24007fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com */ 2401c3d7d90973528527131c72549b10c2a21300e0acskia.committer@gmail.com 24027fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com Segment* findNextOp(SkTDArray<Span*>& chase, int& nextStart, int& nextEnd, 24037fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com bool& unsortable, ShapeOp op, const int xorMiMask, const int xorSuMask) { 2404235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com const int startIndex = nextStart; 2405c3d7d90973528527131c72549b10c2a21300e0acskia.committer@gmail.com const int endIndex = nextEnd; 2406235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com SkASSERT(startIndex != endIndex); 24077fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com const int count = fTs.count(); 24087fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com SkASSERT(startIndex < endIndex ? startIndex < count - 1 : startIndex > 0); 24097fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com const int step = SkSign32(endIndex - startIndex); 24107fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com const int end = nextExactSpan(startIndex, step); 2411235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com SkASSERT(end >= 0); 2412235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com Span* endSpan = &fTs[end]; 2413235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com Segment* other; 2414235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com if (isSimple(end)) { 2415235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com // mark the smaller of startIndex, endIndex done, and all adjacent 2416235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com // spans with the same T value (but not 'other' spans) 2417235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com #if DEBUG_WINDING 2418235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com SkDebugf("%s simple\n", __FUNCTION__); 2419235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com #endif 2420e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com int min = SkMin32(startIndex, endIndex); 2421e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com if (fTs[min].fDone) { 2422e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com return NULL; 2423e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com } 2424e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com markDoneBinary(min); 2425235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com other = endSpan->fOther; 2426235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com nextStart = endSpan->fOtherIndex; 2427235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com double startT = other->fTs[nextStart].fT; 2428235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com nextEnd = nextStart; 2429235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com do { 2430235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com nextEnd += step; 2431a461ff0866526bc51dbd4c4f9f066a727ec21510caryclark@google.com } 2432a461ff0866526bc51dbd4c4f9f066a727ec21510caryclark@google.com while (precisely_zero(startT - other->fTs[nextEnd].fT)); 2433235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com SkASSERT(step < 0 ? nextEnd >= 0 : nextEnd < other->fTs.count()); 2434235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com return other; 2435235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com } 2436235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com // more than one viable candidate -- measure angles to find best 2437235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com SkTDArray<Angle> angles; 2438235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com SkASSERT(startIndex - endIndex != 0); 2439235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com SkASSERT((startIndex - endIndex < 0) ^ (step < 0)); 2440235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com addTwoAngles(startIndex, end, angles); 244131143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com buildAngles(end, angles, true); 2442235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com SkTDArray<Angle*> sorted; 2443c91dfe417a51f73c28ecf2708df1e0bee942c6eacaryclark@google.com bool sortable = SortAngles(angles, sorted); 2444235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com int angleCount = angles.count(); 2445235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com int firstIndex = findStartingEdge(sorted, startIndex, end); 2446235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com SkASSERT(firstIndex >= 0); 2447235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com #if DEBUG_SORT 24487fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com debugShowSort(__FUNCTION__, sorted, firstIndex); 2449235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com #endif 2450c91dfe417a51f73c28ecf2708df1e0bee942c6eacaryclark@google.com if (!sortable) { 2451c91dfe417a51f73c28ecf2708df1e0bee942c6eacaryclark@google.com unsortable = true; 2452c91dfe417a51f73c28ecf2708df1e0bee942c6eacaryclark@google.com return NULL; 2453c91dfe417a51f73c28ecf2708df1e0bee942c6eacaryclark@google.com } 2454235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com SkASSERT(sorted[firstIndex]->segment() == this); 2455235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com #if DEBUG_WINDING 245657cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com SkDebugf("%s firstIndex=[%d] sign=%d\n", __FUNCTION__, firstIndex, 245757cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com sorted[firstIndex]->sign()); 2458235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com #endif 24597fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com int sumMiWinding = updateWinding(endIndex, startIndex); 24607fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com int sumSuWinding = updateOppWinding(endIndex, startIndex); 24617fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com if (operand()) { 24627fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com SkTSwap<int>(sumMiWinding, sumSuWinding); 2463235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com } 2464235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com int nextIndex = firstIndex + 1; 2465235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com int lastIndex = firstIndex != 0 ? firstIndex : angleCount; 2466235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com const Angle* foundAngle = NULL; 2467235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com bool foundDone = false; 2468235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com // iterate through the angle, and compute everyone's winding 2469235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com Segment* nextSegment; 24704aaaaeace7e617ddc473645756fb7c20790bc270caryclark@google.com int activeCount = 0; 2471235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com do { 24727fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com SkASSERT(nextIndex != firstIndex); 2473235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com if (nextIndex == angleCount) { 2474235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com nextIndex = 0; 2475235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com } 2476235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com const Angle* nextAngle = sorted[nextIndex]; 2477235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com nextSegment = nextAngle->segment(); 24787fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com int maxWinding, sumWinding, oppMaxWinding, oppSumWinding; 24797fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com bool activeAngle = nextSegment->activeOp(xorMiMask, xorSuMask, nextAngle->start(), 24807fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com nextAngle->end(), op, sumMiWinding, sumSuWinding, 24817fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com maxWinding, sumWinding, oppMaxWinding, oppSumWinding); 24824aaaaeace7e617ddc473645756fb7c20790bc270caryclark@google.com if (activeAngle) { 24834aaaaeace7e617ddc473645756fb7c20790bc270caryclark@google.com ++activeCount; 24844aaaaeace7e617ddc473645756fb7c20790bc270caryclark@google.com if (!foundAngle || (foundDone && activeCount & 1)) { 24854aaaaeace7e617ddc473645756fb7c20790bc270caryclark@google.com if (nextSegment->tiny(nextAngle)) { 24864aaaaeace7e617ddc473645756fb7c20790bc270caryclark@google.com unsortable = true; 24874aaaaeace7e617ddc473645756fb7c20790bc270caryclark@google.com return NULL; 24884aaaaeace7e617ddc473645756fb7c20790bc270caryclark@google.com } 24894aaaaeace7e617ddc473645756fb7c20790bc270caryclark@google.com foundAngle = nextAngle; 24904aaaaeace7e617ddc473645756fb7c20790bc270caryclark@google.com foundDone = nextSegment->done(nextAngle) && !nextSegment->tiny(nextAngle); 24914aaaaeace7e617ddc473645756fb7c20790bc270caryclark@google.com } 2492235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com } 2493235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com if (nextSegment->done()) { 2494235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com continue; 2495235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com } 24967fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com if (nextSegment->windSum(nextAngle) != SK_MinS32) { 24977fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com continue; 24987fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com } 24997fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com Span* last = nextSegment->markAngle(maxWinding, sumWinding, oppMaxWinding, 25007fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com oppSumWinding, activeAngle, nextAngle); 25017fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com if (last) { 25027fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com *chase.append() = last; 25037fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com#if DEBUG_WINDING 25047fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com SkDebugf("%s chase.append id=%d\n", __FUNCTION__, 25057fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com last->fOther->fTs[last->fOtherIndex].fOther->debugID()); 25067fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com#endif 2507235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com } 2508235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com } while (++nextIndex != lastIndex); 25097fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com markDoneBinary(SkMin32(startIndex, endIndex)); 2510235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com if (!foundAngle) { 2511235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com return NULL; 2512235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com } 2513235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com nextStart = foundAngle->start(); 2514235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com nextEnd = foundAngle->end(); 2515235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com nextSegment = foundAngle->segment(); 251657cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com 2517235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com #if DEBUG_WINDING 25187fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com SkDebugf("%s from:[%d] to:[%d] start=%d end=%d\n", 25197fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com __FUNCTION__, debugID(), nextSegment->debugID(), nextStart, nextEnd); 2520235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com #endif 2521235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com return nextSegment; 2522235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com } 252347580694fbe974a065caf7c39c3d2075708c2018caryclark@google.com 2524d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com Segment* findNextWinding(SkTDArray<Span*>& chase, int& nextStart, int& nextEnd, 2525d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com bool& unsortable) { 2526d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com const int startIndex = nextStart; 2527d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com const int endIndex = nextEnd; 2528d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com SkASSERT(startIndex != endIndex); 2529d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com const int count = fTs.count(); 2530d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com SkASSERT(startIndex < endIndex ? startIndex < count - 1 : startIndex > 0); 2531d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com const int step = SkSign32(endIndex - startIndex); 2532d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com const int end = nextExactSpan(startIndex, step); 2533d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com SkASSERT(end >= 0); 2534d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com Span* endSpan = &fTs[end]; 2535d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com Segment* other; 2536d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com if (isSimple(end)) { 2537d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com // mark the smaller of startIndex, endIndex done, and all adjacent 2538d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com // spans with the same T value (but not 'other' spans) 2539d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com #if DEBUG_WINDING 2540d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com SkDebugf("%s simple\n", __FUNCTION__); 2541d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com #endif 2542d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com int min = SkMin32(startIndex, endIndex); 2543d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com if (fTs[min].fDone) { 2544d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com return NULL; 2545d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com } 2546d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com markDoneUnary(min); 2547d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com other = endSpan->fOther; 2548d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com nextStart = endSpan->fOtherIndex; 2549d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com double startT = other->fTs[nextStart].fT; 2550d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com nextEnd = nextStart; 2551d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com do { 2552d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com nextEnd += step; 2553d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com } 2554d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com while (precisely_zero(startT - other->fTs[nextEnd].fT)); 2555d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com SkASSERT(step < 0 ? nextEnd >= 0 : nextEnd < other->fTs.count()); 2556d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com return other; 2557d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com } 2558d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com // more than one viable candidate -- measure angles to find best 2559d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com SkTDArray<Angle> angles; 2560d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com SkASSERT(startIndex - endIndex != 0); 2561d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com SkASSERT((startIndex - endIndex < 0) ^ (step < 0)); 2562d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com addTwoAngles(startIndex, end, angles); 2563d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com buildAngles(end, angles, true); 2564d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com SkTDArray<Angle*> sorted; 2565d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com bool sortable = SortAngles(angles, sorted); 2566d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com int angleCount = angles.count(); 2567d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com int firstIndex = findStartingEdge(sorted, startIndex, end); 2568d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com SkASSERT(firstIndex >= 0); 2569d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com #if DEBUG_SORT 2570d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com debugShowSort(__FUNCTION__, sorted, firstIndex); 2571d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com #endif 2572d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com if (!sortable) { 2573d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com unsortable = true; 2574d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com return NULL; 2575d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com } 2576d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com SkASSERT(sorted[firstIndex]->segment() == this); 2577d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com #if DEBUG_WINDING 2578d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com SkDebugf("%s firstIndex=[%d] sign=%d\n", __FUNCTION__, firstIndex, 2579d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com sorted[firstIndex]->sign()); 2580d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com #endif 2581d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com int sumWinding = updateWinding(endIndex, startIndex); 2582d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com int nextIndex = firstIndex + 1; 2583d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com int lastIndex = firstIndex != 0 ? firstIndex : angleCount; 2584d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com const Angle* foundAngle = NULL; 2585d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com bool foundDone = false; 2586d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com // iterate through the angle, and compute everyone's winding 2587d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com Segment* nextSegment; 2588db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com int activeCount = 0; 2589d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com do { 2590d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com SkASSERT(nextIndex != firstIndex); 2591d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com if (nextIndex == angleCount) { 2592d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com nextIndex = 0; 2593d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com } 2594d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com const Angle* nextAngle = sorted[nextIndex]; 2595d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com nextSegment = nextAngle->segment(); 2596d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com int maxWinding; 25977a03d86a3d9adcb13432fbd82039725149487c97skia.committer@gmail.com bool activeAngle = nextSegment->activeWinding(nextAngle->start(), nextAngle->end(), 2598d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com maxWinding, sumWinding); 2599db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com if (activeAngle) { 2600db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com ++activeCount; 2601db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com if (!foundAngle || (foundDone && activeCount & 1)) { 2602db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com if (nextSegment->tiny(nextAngle)) { 2603db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com unsortable = true; 2604db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com return NULL; 2605db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com } 2606db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com foundAngle = nextAngle; 2607db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com foundDone = nextSegment->done(nextAngle); 2608db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com } 2609d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com } 2610d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com if (nextSegment->done()) { 2611d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com continue; 2612d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com } 2613d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com if (nextSegment->windSum(nextAngle) != SK_MinS32) { 2614d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com continue; 2615d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com } 2616d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com Span* last = nextSegment->markAngle(maxWinding, sumWinding, activeAngle, nextAngle); 2617d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com if (last) { 2618d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com *chase.append() = last; 2619d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com#if DEBUG_WINDING 2620d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com SkDebugf("%s chase.append id=%d\n", __FUNCTION__, 2621d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com last->fOther->fTs[last->fOtherIndex].fOther->debugID()); 2622d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com#endif 2623d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com } 2624d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com } while (++nextIndex != lastIndex); 2625d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com markDoneUnary(SkMin32(startIndex, endIndex)); 2626d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com if (!foundAngle) { 2627d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com return NULL; 2628d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com } 2629d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com nextStart = foundAngle->start(); 2630d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com nextEnd = foundAngle->end(); 2631d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com nextSegment = foundAngle->segment(); 2632d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com #if DEBUG_WINDING 2633d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com SkDebugf("%s from:[%d] to:[%d] start=%d end=%d\n", 2634d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com __FUNCTION__, debugID(), nextSegment->debugID(), nextStart, nextEnd); 2635d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com #endif 2636d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com return nextSegment; 2637d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com } 2638d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com 2639c91dfe417a51f73c28ecf2708df1e0bee942c6eacaryclark@google.com Segment* findNextXor(int& nextStart, int& nextEnd, bool& unsortable) { 264024bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com const int startIndex = nextStart; 264124bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com const int endIndex = nextEnd; 264224bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com SkASSERT(startIndex != endIndex); 264324bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com int count = fTs.count(); 264424bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com SkASSERT(startIndex < endIndex ? startIndex < count - 1 264524bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com : startIndex > 0); 264624bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com int step = SkSign32(endIndex - startIndex); 2647a461ff0866526bc51dbd4c4f9f066a727ec21510caryclark@google.com int end = nextExactSpan(startIndex, step); 264824bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com SkASSERT(end >= 0); 264924bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com Span* endSpan = &fTs[end]; 265024bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com Segment* other; 265124bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com if (isSimple(end)) { 265224bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com #if DEBUG_WINDING 265324bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com SkDebugf("%s simple\n", __FUNCTION__); 265424bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com #endif 2655e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com int min = SkMin32(startIndex, endIndex); 2656e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com if (fTs[min].fDone) { 2657e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com return NULL; 2658e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com } 2659e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com markDone(min, 1); 266024bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com other = endSpan->fOther; 266124bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com nextStart = endSpan->fOtherIndex; 266224bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com double startT = other->fTs[nextStart].fT; 26638f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com #if 01 // FIXME: I don't know why the logic here is difference from the winding case 266424bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com SkDEBUGCODE(bool firstLoop = true;) 26653350c3c68ab75cd08721da3a938b8d2b10096d70caryclark@google.com if ((approximately_less_than_zero(startT) && step < 0) 26663350c3c68ab75cd08721da3a938b8d2b10096d70caryclark@google.com || (approximately_greater_than_one(startT) && step > 0)) { 266724bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com step = -step; 266824bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com SkDEBUGCODE(firstLoop = false;) 266924bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com } 267024bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com do { 26718f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com #endif 267224bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com nextEnd = nextStart; 267324bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com do { 267424bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com nextEnd += step; 2675a461ff0866526bc51dbd4c4f9f066a727ec21510caryclark@google.com } 2676a461ff0866526bc51dbd4c4f9f066a727ec21510caryclark@google.com while (precisely_zero(startT - other->fTs[nextEnd].fT)); 26778f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com #if 01 267824bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com if (other->fTs[SkMin32(nextStart, nextEnd)].fWindValue) { 267924bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com break; 268024bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com } 268103f970652e07c6832cae41fa374cb68ca80d472ccaryclark@google.com #ifdef SK_DEBUG 268224bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com SkASSERT(firstLoop); 268303f970652e07c6832cae41fa374cb68ca80d472ccaryclark@google.com #endif 268424bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com SkDEBUGCODE(firstLoop = false;) 268524bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com step = -step; 268624bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com } while (true); 26878f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com #endif 268824bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com SkASSERT(step < 0 ? nextEnd >= 0 : nextEnd < other->fTs.count()); 268924bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com return other; 269024bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com } 269124bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com SkTDArray<Angle> angles; 269224bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com SkASSERT(startIndex - endIndex != 0); 269324bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com SkASSERT((startIndex - endIndex < 0) ^ (step < 0)); 269424bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com addTwoAngles(startIndex, end, angles); 269531143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com buildAngles(end, angles, false); 269624bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com SkTDArray<Angle*> sorted; 2697c91dfe417a51f73c28ecf2708df1e0bee942c6eacaryclark@google.com bool sortable = SortAngles(angles, sorted); 2698e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com if (!sortable) { 2699e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com unsortable = true; 27008f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com #if DEBUG_SORT 27018f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com debugShowSort(__FUNCTION__, sorted, findStartingEdge(sorted, startIndex, end), 0, 0); 27028f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com #endif 2703e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com return NULL; 2704e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com } 270524bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com int angleCount = angles.count(); 270624bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com int firstIndex = findStartingEdge(sorted, startIndex, end); 270724bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com SkASSERT(firstIndex >= 0); 270824bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com #if DEBUG_SORT 270931143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com debugShowSort(__FUNCTION__, sorted, firstIndex, 0, 0); 271024bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com #endif 271124bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com SkASSERT(sorted[firstIndex]->segment() == this); 271224bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com int nextIndex = firstIndex + 1; 271324bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com int lastIndex = firstIndex != 0 ? firstIndex : angleCount; 27148f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com const Angle* foundAngle = NULL; 27158f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com bool foundDone = false; 271624bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com Segment* nextSegment; 27178f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com int activeCount = 0; 271824bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com do { 27198f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com SkASSERT(nextIndex != firstIndex); 272024bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com if (nextIndex == angleCount) { 272124bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com nextIndex = 0; 272224bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com } 27238f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com const Angle* nextAngle = sorted[nextIndex]; 272424bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com nextSegment = nextAngle->segment(); 27258f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com ++activeCount; 27268f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com if (!foundAngle || (foundDone && activeCount & 1)) { 27278f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com if (nextSegment->tiny(nextAngle)) { 27288f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com unsortable = true; 27298f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com return NULL; 27308f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com } 27318f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com foundAngle = nextAngle; 27328f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com foundDone = nextSegment->done(nextAngle); 27338f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com } 27348f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com if (nextSegment->done()) { 27358f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com continue; 273624bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com } 2737e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com } while (++nextIndex != lastIndex); 2738e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com markDone(SkMin32(startIndex, endIndex), 1); 2739e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com if (!foundAngle) { 27408f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com return NULL; 2741e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com } 27428f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com nextStart = foundAngle->start(); 27438f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com nextEnd = foundAngle->end(); 27448f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com nextSegment = foundAngle->segment(); 27458f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com #if DEBUG_WINDING 27468f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com SkDebugf("%s from:[%d] to:[%d] start=%d end=%d\n", 27478f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com __FUNCTION__, debugID(), nextSegment->debugID(), nextStart, nextEnd); 27488f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com #endif 274924bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com return nextSegment; 275024bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com } 2751fa4a6e964691ff9a88bc047418abe2d4324dfcaecaryclark@google.com 2752fa4a6e964691ff9a88bc047418abe2d4324dfcaecaryclark@google.com int findStartingEdge(SkTDArray<Angle*>& sorted, int start, int end) { 2753fa4a6e964691ff9a88bc047418abe2d4324dfcaecaryclark@google.com int angleCount = sorted.count(); 2754fa4a6e964691ff9a88bc047418abe2d4324dfcaecaryclark@google.com int firstIndex = -1; 2755fa4a6e964691ff9a88bc047418abe2d4324dfcaecaryclark@google.com for (int angleIndex = 0; angleIndex < angleCount; ++angleIndex) { 2756fa4a6e964691ff9a88bc047418abe2d4324dfcaecaryclark@google.com const Angle* angle = sorted[angleIndex]; 2757fa4a6e964691ff9a88bc047418abe2d4324dfcaecaryclark@google.com if (angle->segment() == this && angle->start() == end && 2758fa4a6e964691ff9a88bc047418abe2d4324dfcaecaryclark@google.com angle->end() == start) { 2759fa4a6e964691ff9a88bc047418abe2d4324dfcaecaryclark@google.com firstIndex = angleIndex; 2760fa4a6e964691ff9a88bc047418abe2d4324dfcaecaryclark@google.com break; 2761fa4a6e964691ff9a88bc047418abe2d4324dfcaecaryclark@google.com } 2762fa4a6e964691ff9a88bc047418abe2d4324dfcaecaryclark@google.com } 2763fa4a6e964691ff9a88bc047418abe2d4324dfcaecaryclark@google.com return firstIndex; 2764fa4a6e964691ff9a88bc047418abe2d4324dfcaecaryclark@google.com } 2765fa4a6e964691ff9a88bc047418abe2d4324dfcaecaryclark@google.com 27661577e8f9c5bc8436cc71d3438c6d0b9f02c38338caryclark@google.com // FIXME: this is tricky code; needs its own unit test 27678f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com // note that fOtherIndex isn't computed yet, so it can't be used here 27684eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com void findTooCloseToCall() { 276915fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com int count = fTs.count(); 277015fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com if (count < 3) { // require t=0, x, 1 at minimum 277115fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com return; 277215fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com } 2773a833b5c40d0516237e0889fce8af44880423fc20caryclark@google.com int matchIndex = 0; 277415fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com int moCount; 277515fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com Span* match; 277615fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com Segment* mOther; 277715fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com do { 277815fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com match = &fTs[matchIndex]; 277915fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com mOther = match->fOther; 2780c899ad9c7fa28234d99479ab09afb6866bbd8dc3caryclark@google.com // FIXME: allow quads, cubics to be near coincident? 2781c899ad9c7fa28234d99479ab09afb6866bbd8dc3caryclark@google.com if (mOther->fVerb == SkPath::kLine_Verb) { 2782c899ad9c7fa28234d99479ab09afb6866bbd8dc3caryclark@google.com moCount = mOther->fTs.count(); 2783c899ad9c7fa28234d99479ab09afb6866bbd8dc3caryclark@google.com if (moCount >= 3) { 2784c899ad9c7fa28234d99479ab09afb6866bbd8dc3caryclark@google.com break; 2785c899ad9c7fa28234d99479ab09afb6866bbd8dc3caryclark@google.com } 27861577e8f9c5bc8436cc71d3438c6d0b9f02c38338caryclark@google.com } 27871577e8f9c5bc8436cc71d3438c6d0b9f02c38338caryclark@google.com if (++matchIndex >= count) { 27881577e8f9c5bc8436cc71d3438c6d0b9f02c38338caryclark@google.com return; 27891577e8f9c5bc8436cc71d3438c6d0b9f02c38338caryclark@google.com } 27901577e8f9c5bc8436cc71d3438c6d0b9f02c38338caryclark@google.com } while (true); // require t=0, x, 1 at minimum 279115fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com // OPTIMIZATION: defer matchPt until qualifying toCount is found? 2792a3f05facab01712a1b58e60a70b0dbdb90a39830caryclark@google.com const SkPoint* matchPt = &xyAtT(match); 2793a833b5c40d0516237e0889fce8af44880423fc20caryclark@google.com // look for a pair of nearby T values that map to the same (x,y) value 2794a833b5c40d0516237e0889fce8af44880423fc20caryclark@google.com // if found, see if the pair of other segments share a common point. If 2795a833b5c40d0516237e0889fce8af44880423fc20caryclark@google.com // so, the span from here to there is coincident. 279615fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com for (int index = matchIndex + 1; index < count; ++index) { 279715fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com Span* test = &fTs[index]; 27988dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com if (test->fDone) { 2799495f8e435b677f28913cd2adc8caa8d3d766dd17caryclark@google.com continue; 2800495f8e435b677f28913cd2adc8caa8d3d766dd17caryclark@google.com } 280115fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com Segment* tOther = test->fOther; 2802c899ad9c7fa28234d99479ab09afb6866bbd8dc3caryclark@google.com if (tOther->fVerb != SkPath::kLine_Verb) { 2803c899ad9c7fa28234d99479ab09afb6866bbd8dc3caryclark@google.com continue; // FIXME: allow quads, cubics to be near coincident? 2804c899ad9c7fa28234d99479ab09afb6866bbd8dc3caryclark@google.com } 280515fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com int toCount = tOther->fTs.count(); 280615fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com if (toCount < 3) { // require t=0, x, 1 at minimum 2807a833b5c40d0516237e0889fce8af44880423fc20caryclark@google.com continue; 2808a833b5c40d0516237e0889fce8af44880423fc20caryclark@google.com } 2809a3f05facab01712a1b58e60a70b0dbdb90a39830caryclark@google.com const SkPoint* testPt = &xyAtT(test); 2810a3f05facab01712a1b58e60a70b0dbdb90a39830caryclark@google.com if (*matchPt != *testPt) { 2811a833b5c40d0516237e0889fce8af44880423fc20caryclark@google.com matchIndex = index; 281215fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com moCount = toCount; 281315fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com match = test; 281415fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com mOther = tOther; 2815a833b5c40d0516237e0889fce8af44880423fc20caryclark@google.com matchPt = testPt; 2816a833b5c40d0516237e0889fce8af44880423fc20caryclark@google.com continue; 2817a833b5c40d0516237e0889fce8af44880423fc20caryclark@google.com } 28181577e8f9c5bc8436cc71d3438c6d0b9f02c38338caryclark@google.com int moStart = -1; 28191577e8f9c5bc8436cc71d3438c6d0b9f02c38338caryclark@google.com int moEnd = -1; 28201577e8f9c5bc8436cc71d3438c6d0b9f02c38338caryclark@google.com double moStartT, moEndT; 2821a833b5c40d0516237e0889fce8af44880423fc20caryclark@google.com for (int moIndex = 0; moIndex < moCount; ++moIndex) { 282215fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com Span& moSpan = mOther->fTs[moIndex]; 28238dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com if (moSpan.fDone) { 2824495f8e435b677f28913cd2adc8caa8d3d766dd17caryclark@google.com continue; 2825495f8e435b677f28913cd2adc8caa8d3d766dd17caryclark@google.com } 282615fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com if (moSpan.fOther == this) { 282715fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com if (moSpan.fOtherT == match->fT) { 282815fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com moStart = moIndex; 28291577e8f9c5bc8436cc71d3438c6d0b9f02c38338caryclark@google.com moStartT = moSpan.fT; 283015fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com } 283115fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com continue; 283215fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com } 28331577e8f9c5bc8436cc71d3438c6d0b9f02c38338caryclark@google.com if (moSpan.fOther == tOther) { 28348f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com if (tOther->windValueAt(moSpan.fOtherT) == 0) { 2835c899ad9c7fa28234d99479ab09afb6866bbd8dc3caryclark@google.com moStart = -1; 2836c899ad9c7fa28234d99479ab09afb6866bbd8dc3caryclark@google.com break; 2837c899ad9c7fa28234d99479ab09afb6866bbd8dc3caryclark@google.com } 28381577e8f9c5bc8436cc71d3438c6d0b9f02c38338caryclark@google.com SkASSERT(moEnd == -1); 28391577e8f9c5bc8436cc71d3438c6d0b9f02c38338caryclark@google.com moEnd = moIndex; 28401577e8f9c5bc8436cc71d3438c6d0b9f02c38338caryclark@google.com moEndT = moSpan.fT; 2841a833b5c40d0516237e0889fce8af44880423fc20caryclark@google.com } 28421577e8f9c5bc8436cc71d3438c6d0b9f02c38338caryclark@google.com } 28431577e8f9c5bc8436cc71d3438c6d0b9f02c38338caryclark@google.com if (moStart < 0 || moEnd < 0) { 28441577e8f9c5bc8436cc71d3438c6d0b9f02c38338caryclark@google.com continue; 28451577e8f9c5bc8436cc71d3438c6d0b9f02c38338caryclark@google.com } 28461577e8f9c5bc8436cc71d3438c6d0b9f02c38338caryclark@google.com // FIXME: if moStartT, moEndT are initialized to NaN, can skip this test 28473350c3c68ab75cd08721da3a938b8d2b10096d70caryclark@google.com if (approximately_equal(moStartT, moEndT)) { 28481577e8f9c5bc8436cc71d3438c6d0b9f02c38338caryclark@google.com continue; 28491577e8f9c5bc8436cc71d3438c6d0b9f02c38338caryclark@google.com } 28501577e8f9c5bc8436cc71d3438c6d0b9f02c38338caryclark@google.com int toStart = -1; 28511577e8f9c5bc8436cc71d3438c6d0b9f02c38338caryclark@google.com int toEnd = -1; 28521577e8f9c5bc8436cc71d3438c6d0b9f02c38338caryclark@google.com double toStartT, toEndT; 28531577e8f9c5bc8436cc71d3438c6d0b9f02c38338caryclark@google.com for (int toIndex = 0; toIndex < toCount; ++toIndex) { 28541577e8f9c5bc8436cc71d3438c6d0b9f02c38338caryclark@google.com Span& toSpan = tOther->fTs[toIndex]; 2855c899ad9c7fa28234d99479ab09afb6866bbd8dc3caryclark@google.com if (toSpan.fDone) { 2856c899ad9c7fa28234d99479ab09afb6866bbd8dc3caryclark@google.com continue; 2857c899ad9c7fa28234d99479ab09afb6866bbd8dc3caryclark@google.com } 28581577e8f9c5bc8436cc71d3438c6d0b9f02c38338caryclark@google.com if (toSpan.fOther == this) { 28591577e8f9c5bc8436cc71d3438c6d0b9f02c38338caryclark@google.com if (toSpan.fOtherT == test->fT) { 28601577e8f9c5bc8436cc71d3438c6d0b9f02c38338caryclark@google.com toStart = toIndex; 28611577e8f9c5bc8436cc71d3438c6d0b9f02c38338caryclark@google.com toStartT = toSpan.fT; 2862a833b5c40d0516237e0889fce8af44880423fc20caryclark@google.com } 286315fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com continue; 2864a833b5c40d0516237e0889fce8af44880423fc20caryclark@google.com } 28651577e8f9c5bc8436cc71d3438c6d0b9f02c38338caryclark@google.com if (toSpan.fOther == mOther && toSpan.fOtherT == moEndT) { 28668f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com if (mOther->windValueAt(toSpan.fOtherT) == 0) { 2867c899ad9c7fa28234d99479ab09afb6866bbd8dc3caryclark@google.com moStart = -1; 2868c899ad9c7fa28234d99479ab09afb6866bbd8dc3caryclark@google.com break; 2869c899ad9c7fa28234d99479ab09afb6866bbd8dc3caryclark@google.com } 28701577e8f9c5bc8436cc71d3438c6d0b9f02c38338caryclark@google.com SkASSERT(toEnd == -1); 28711577e8f9c5bc8436cc71d3438c6d0b9f02c38338caryclark@google.com toEnd = toIndex; 28721577e8f9c5bc8436cc71d3438c6d0b9f02c38338caryclark@google.com toEndT = toSpan.fT; 2873a833b5c40d0516237e0889fce8af44880423fc20caryclark@google.com } 2874a833b5c40d0516237e0889fce8af44880423fc20caryclark@google.com } 28751577e8f9c5bc8436cc71d3438c6d0b9f02c38338caryclark@google.com // FIXME: if toStartT, toEndT are initialized to NaN, can skip this test 28761577e8f9c5bc8436cc71d3438c6d0b9f02c38338caryclark@google.com if (toStart <= 0 || toEnd <= 0) { 2877fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com continue; 2878fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 28793350c3c68ab75cd08721da3a938b8d2b10096d70caryclark@google.com if (approximately_equal(toStartT, toEndT)) { 2880fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com continue; 2881fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 28821577e8f9c5bc8436cc71d3438c6d0b9f02c38338caryclark@google.com // test to see if the segment between there and here is linear 28831577e8f9c5bc8436cc71d3438c6d0b9f02c38338caryclark@google.com if (!mOther->isLinear(moStart, moEnd) 28841577e8f9c5bc8436cc71d3438c6d0b9f02c38338caryclark@google.com || !tOther->isLinear(toStart, toEnd)) { 28851577e8f9c5bc8436cc71d3438c6d0b9f02c38338caryclark@google.com continue; 2886b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com } 2887c899ad9c7fa28234d99479ab09afb6866bbd8dc3caryclark@google.com bool flipped = (moStart - moEnd) * (toStart - toEnd) < 1; 28888dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com if (flipped) { 28893350c3c68ab75cd08721da3a938b8d2b10096d70caryclark@google.com mOther->addTCancel(moStartT, moEndT, *tOther, toEndT, toStartT); 28908dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com } else { 28914eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com mOther->addTCoincident(moStartT, moEndT, *tOther, toStartT, toEndT); 28928dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com } 2893fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 2894fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 2895fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 289645a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com // FIXME: either: 2897c91dfe417a51f73c28ecf2708df1e0bee942c6eacaryclark@google.com // a) mark spans with either end unsortable as done, or 2898c91dfe417a51f73c28ecf2708df1e0bee942c6eacaryclark@google.com // b) rewrite findTop / findTopSegment / findTopContour to iterate further 2899c91dfe417a51f73c28ecf2708df1e0bee942c6eacaryclark@google.com // when encountering an unsortable span 2900c91dfe417a51f73c28ecf2708df1e0bee942c6eacaryclark@google.com 2901a833b5c40d0516237e0889fce8af44880423fc20caryclark@google.com // OPTIMIZATION : for a pair of lines, can we compute points at T (cached) 2902a833b5c40d0516237e0889fce8af44880423fc20caryclark@google.com // and use more concise logic like the old edge walker code? 2903a833b5c40d0516237e0889fce8af44880423fc20caryclark@google.com // FIXME: this needs to deal with coincident edges 2904e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com Segment* findTop(int& tIndex, int& endIndex, bool& unsortable, bool onlySortable) { 2905fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com // iterate through T intersections and return topmost 2906fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com // topmost tangent from y-min to first pt is closer to horizontal 290788f7d0cb09707355bc9079d4b0569537e8048fa9caryclark@google.com SkASSERT(!done()); 29089f3e9a5a17a7546e1c5bfde1eb7e6e9c11870333caryclark@google.com int firstT = -1; 2909d0a19eb9140ecb968357f798f06d2b052b51fd89caryclark@google.com /* SkPoint topPt = */ activeLeftTop(onlySortable, &firstT); 2910996d78b7cf9863a5b574fc1b64b1715cad4d0a23caryclark@google.com if (firstT < 0) { 2911996d78b7cf9863a5b574fc1b64b1715cad4d0a23caryclark@google.com unsortable = true; 2912996d78b7cf9863a5b574fc1b64b1715cad4d0a23caryclark@google.com firstT = 0; 2913996d78b7cf9863a5b574fc1b64b1715cad4d0a23caryclark@google.com while (fTs[firstT].fDone) { 2914996d78b7cf9863a5b574fc1b64b1715cad4d0a23caryclark@google.com SkASSERT(firstT < fTs.count()); 2915996d78b7cf9863a5b574fc1b64b1715cad4d0a23caryclark@google.com ++firstT; 2916996d78b7cf9863a5b574fc1b64b1715cad4d0a23caryclark@google.com } 2917996d78b7cf9863a5b574fc1b64b1715cad4d0a23caryclark@google.com tIndex = firstT; 2918996d78b7cf9863a5b574fc1b64b1715cad4d0a23caryclark@google.com endIndex = nextExactSpan(firstT, 1); 2919996d78b7cf9863a5b574fc1b64b1715cad4d0a23caryclark@google.com return this; 2920996d78b7cf9863a5b574fc1b64b1715cad4d0a23caryclark@google.com } 2921b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com // sort the edges to find the leftmost 2922a3f05facab01712a1b58e60a70b0dbdb90a39830caryclark@google.com int step = 1; 2923a3f05facab01712a1b58e60a70b0dbdb90a39830caryclark@google.com int end = nextSpan(firstT, step); 2924b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com if (end == -1) { 2925a3f05facab01712a1b58e60a70b0dbdb90a39830caryclark@google.com step = -1; 2926a3f05facab01712a1b58e60a70b0dbdb90a39830caryclark@google.com end = nextSpan(firstT, step); 292765f9f0a1664a9cb38157ccfbcc3e0e936af0a58ecaryclark@google.com SkASSERT(end != -1); 2928b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com } 2929fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com // if the topmost T is not on end, or is three-way or more, find left 2930a833b5c40d0516237e0889fce8af44880423fc20caryclark@google.com // look for left-ness from tLeft to firstT (matching y of other) 2931b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com SkTDArray<Angle> angles; 2932b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com SkASSERT(firstT - end != 0); 29338dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com addTwoAngles(end, firstT, angles); 293431143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com buildAngles(firstT, angles, true); 2935b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com SkTDArray<Angle*> sorted; 2936f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com bool sortable = SortAngles(angles, sorted); 29371304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com int first = SK_MaxS32; 29381304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com SkScalar top = SK_ScalarMax; 29391304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com int count = sorted.count(); 29401304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com for (int index = 0; index < count; ++index) { 29411304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com const Angle* angle = sorted[index]; 29421304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com Segment* next = angle->segment(); 29431304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com Bounds bounds; 29441304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com next->subDivideBounds(angle->end(), angle->start(), bounds); 29451304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com if (approximately_greater(top, bounds.fTop)) { 29461304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com top = bounds.fTop; 29471304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com first = index; 29481304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com } 29491304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com } 29501304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com SkASSERT(first < SK_MaxS32); 29511304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com #if DEBUG_SORT // || DEBUG_SWAP_TOP 29521304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com sorted[first]->segment()->debugShowSort(__FUNCTION__, sorted, first, 0, 0); 295303f970652e07c6832cae41fa374cb68ca80d472ccaryclark@google.com #endif 2954e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com if (onlySortable && !sortable) { 2955e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com unsortable = true; 2956f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com return NULL; 2957f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com } 295888f7d0cb09707355bc9079d4b0569537e8048fa9caryclark@google.com // skip edges that have already been processed 29591304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com firstT = first - 1; 296088f7d0cb09707355bc9079d4b0569537e8048fa9caryclark@google.com Segment* leftSegment; 296188f7d0cb09707355bc9079d4b0569537e8048fa9caryclark@google.com do { 29621304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com if (++firstT == count) { 29631304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com firstT = 0; 29641304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com } 29651304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com const Angle* angle = sorted[firstT]; 2966e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com SkASSERT(!onlySortable || !angle->unsortable()); 296788f7d0cb09707355bc9079d4b0569537e8048fa9caryclark@google.com leftSegment = angle->segment(); 296888f7d0cb09707355bc9079d4b0569537e8048fa9caryclark@google.com tIndex = angle->end(); 296988f7d0cb09707355bc9079d4b0569537e8048fa9caryclark@google.com endIndex = angle->start(); 297088f7d0cb09707355bc9079d4b0569537e8048fa9caryclark@google.com } while (leftSegment->fTs[SkMin32(tIndex, endIndex)].fDone); 297145a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com if (leftSegment->verb() >= SkPath::kQuad_Verb) { 29721304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com if (!leftSegment->clockwise(tIndex, endIndex)) { 29731304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com bool swap = leftSegment->verb() == SkPath::kQuad_Verb 29741304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com || (!leftSegment->monotonic_in_y(tIndex, endIndex) 29751304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com && !leftSegment->serpentine(tIndex, endIndex)); 297647d73daa7a971e7eee5822def7922f7d43b2dc47caryclark@google.com #if DEBUG_SWAP_TOP 29771304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com SkDebugf("%s swap=%d serpentine=%d controls_contained_by_ends=%d\n", __FUNCTION__, 29781304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com swap, 29791304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com leftSegment->serpentine(tIndex, endIndex), 29801304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com leftSegment->controls_contained_by_ends(tIndex, endIndex), 29811304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com leftSegment->monotonic_in_y(tIndex, endIndex)); 298247d73daa7a971e7eee5822def7922f7d43b2dc47caryclark@google.com #endif 29831304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com if (swap) { 29841304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com // FIXME: I doubt it makes sense to (necessarily) swap if the edge was not the first 29851304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com // sorted but merely the first not already processed (i.e., not done) 29861304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com SkTSwap(tIndex, endIndex); 29871304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com } 298845a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com } 298945a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com } 2990e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com SkASSERT(!leftSegment->fTs[SkMin32(tIndex, endIndex)].fTiny); 2991b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com return leftSegment; 2992b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com } 2993d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com 2994b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com // FIXME: not crazy about this 2995b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com // when the intersections are performed, the other index is into an 29961304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com // incomplete array. As the array grows, the indices become incorrect 2997b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com // while the following fixes the indices up again, it isn't smart about 2998b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com // skipping segments whose indices are already correct 2999b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com // assuming we leave the code that wrote the index in the first place 3000b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com void fixOtherTIndex() { 3001b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com int iCount = fTs.count(); 3002b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com for (int i = 0; i < iCount; ++i) { 3003b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com Span& iSpan = fTs[i]; 3004b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com double oT = iSpan.fOtherT; 3005b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com Segment* other = iSpan.fOther; 3006b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com int oCount = other->fTs.count(); 3007b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com for (int o = 0; o < oCount; ++o) { 3008b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com Span& oSpan = other->fTs[o]; 30091304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com if (oT == oSpan.fT && this == oSpan.fOther && oSpan.fOtherT == iSpan.fT) { 3010b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com iSpan.fOtherIndex = o; 30118dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com break; 3012b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com } 3013fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 3014fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 3015b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com } 3016c7b4be7f110bc7b487c3c3f28d82877584e74c2fskia.committer@gmail.com 30174eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com void init(const SkPoint pts[], SkPath::Verb verb, bool operand, bool evenOdd) { 3018235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com fDoneSpans = 0; 3019235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com fOperand = operand; 30204eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com fXor = evenOdd; 3021b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com fPts = pts; 3022b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com fVerb = verb; 3023fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 30248d83d0db6433e009c6c7f9adbd2580578b6f297eskia.committer@gmail.com 30253586ece1ddbb48cabb2e7a4792be9ff5d74e40d9caryclark@google.com void initWinding(int start, int end) { 30263586ece1ddbb48cabb2e7a4792be9ff5d74e40d9caryclark@google.com int local = spanSign(start, end); 30273586ece1ddbb48cabb2e7a4792be9ff5d74e40d9caryclark@google.com int oppLocal = oppSign(start, end); 30283586ece1ddbb48cabb2e7a4792be9ff5d74e40d9caryclark@google.com (void) markAndChaseWinding(start, end, local, oppLocal); 302973ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com // OPTIMIZATION: the reverse mark and chase could skip the first marking 303073ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com (void) markAndChaseWinding(end, start, local, oppLocal); 30313586ece1ddbb48cabb2e7a4792be9ff5d74e40d9caryclark@google.com } 3032fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 30333586ece1ddbb48cabb2e7a4792be9ff5d74e40d9caryclark@google.com void initWinding(int start, int end, int winding, int oppWinding) { 3034db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com int local = spanSign(start, end); 30353586ece1ddbb48cabb2e7a4792be9ff5d74e40d9caryclark@google.com if (local * winding >= 0) { 3036db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com winding += local; 3037db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com } 3038db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com int oppLocal = oppSign(start, end); 30393586ece1ddbb48cabb2e7a4792be9ff5d74e40d9caryclark@google.com if (oppLocal * oppWinding >= 0) { 3040db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com oppWinding += oppLocal; 3041db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com } 3042db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com (void) markAndChaseWinding(start, end, winding, oppWinding); 3043db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com } 3044db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com 30453586ece1ddbb48cabb2e7a4792be9ff5d74e40d9caryclark@google.com/* 30463586ece1ddbb48cabb2e7a4792be9ff5d74e40d9caryclark@google.comwhen we start with a vertical intersect, we try to use the dx to determine if the edge is to 30473586ece1ddbb48cabb2e7a4792be9ff5d74e40d9caryclark@google.comthe left or the right of vertical. This determines if we need to add the span's 30488d83d0db6433e009c6c7f9adbd2580578b6f297eskia.committer@gmail.comsign or not. However, this isn't enough. 30498d83d0db6433e009c6c7f9adbd2580578b6f297eskia.committer@gmail.comIf the supplied sign (winding) is zero, then we didn't hit another vertical span, so dx is needed. 30503586ece1ddbb48cabb2e7a4792be9ff5d74e40d9caryclark@google.comIf there was a winding, then it may or may not need adjusting. If the span the winding was borrowed 30513586ece1ddbb48cabb2e7a4792be9ff5d74e40d9caryclark@google.comfrom has the same x direction as this span, the winding should change. If the dx is opposite, then 30528d83d0db6433e009c6c7f9adbd2580578b6f297eskia.committer@gmail.comthe same winding is shared by both. 30533586ece1ddbb48cabb2e7a4792be9ff5d74e40d9caryclark@google.com*/ 30543586ece1ddbb48cabb2e7a4792be9ff5d74e40d9caryclark@google.com void initWinding(int start, int end, double tHit, int winding, SkScalar hitDx, int oppWind, 30553586ece1ddbb48cabb2e7a4792be9ff5d74e40d9caryclark@google.com SkScalar hitOppDx) { 30563586ece1ddbb48cabb2e7a4792be9ff5d74e40d9caryclark@google.com SkASSERT(hitDx || !winding); 3057db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com SkScalar dx = (*SegmentDXAtT[fVerb])(fPts, tHit); 3058db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com SkASSERT(dx); 30593586ece1ddbb48cabb2e7a4792be9ff5d74e40d9caryclark@google.com int windVal = windValue(SkMin32(start, end)); 30608f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com #if DEBUG_WINDING_AT_T 30618f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com SkDebugf("%s oldWinding=%d hitDx=%c dx=%c windVal=%d", __FUNCTION__, winding, 30628f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com hitDx ? hitDx > 0 ? '+' : '-' : '0', dx > 0 ? '+' : '-', windVal); 30638f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com #endif 3064db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com if (!winding) { 30653586ece1ddbb48cabb2e7a4792be9ff5d74e40d9caryclark@google.com winding = dx < 0 ? windVal : -windVal; 30668f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com } else if (winding * dx < 0) { 30673586ece1ddbb48cabb2e7a4792be9ff5d74e40d9caryclark@google.com int sideWind = winding + (dx < 0 ? windVal : -windVal); 30683586ece1ddbb48cabb2e7a4792be9ff5d74e40d9caryclark@google.com if (abs(winding) < abs(sideWind)) { 30693586ece1ddbb48cabb2e7a4792be9ff5d74e40d9caryclark@google.com winding = sideWind; 30703586ece1ddbb48cabb2e7a4792be9ff5d74e40d9caryclark@google.com } 30717fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com } 30728f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com #if DEBUG_WINDING_AT_T 30738f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com SkDebugf(" winding=%d\n", winding); 30748f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com #endif 3075db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com int oppLocal = oppSign(start, end); 30763586ece1ddbb48cabb2e7a4792be9ff5d74e40d9caryclark@google.com SkASSERT(hitOppDx || !oppWind || !oppLocal); 30773586ece1ddbb48cabb2e7a4792be9ff5d74e40d9caryclark@google.com int oppWindVal = oppValue(SkMin32(start, end)); 30783586ece1ddbb48cabb2e7a4792be9ff5d74e40d9caryclark@google.com if (!oppWind) { 30793586ece1ddbb48cabb2e7a4792be9ff5d74e40d9caryclark@google.com oppWind = dx < 0 ? oppWindVal : -oppWindVal; 30803586ece1ddbb48cabb2e7a4792be9ff5d74e40d9caryclark@google.com } else if (hitOppDx * dx >= 0) { 30813586ece1ddbb48cabb2e7a4792be9ff5d74e40d9caryclark@google.com int oppSideWind = oppWind + (dx < 0 ? oppWindVal : -oppWindVal); 30823586ece1ddbb48cabb2e7a4792be9ff5d74e40d9caryclark@google.com if (abs(oppWind) < abs(oppSideWind)) { 30833586ece1ddbb48cabb2e7a4792be9ff5d74e40d9caryclark@google.com oppWind = oppSideWind; 30843586ece1ddbb48cabb2e7a4792be9ff5d74e40d9caryclark@google.com } 30857fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com } 30863586ece1ddbb48cabb2e7a4792be9ff5d74e40d9caryclark@google.com (void) markAndChaseWinding(start, end, winding, oppWind); 30877fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com } 30887fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com 3089fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com bool intersected() const { 3090fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com return fTs.count() > 0; 3091fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 30927db7c6bba9e9a61ad574a1d60b65bce4563beee5caryclark@google.com 309310227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com bool isCanceled(int tIndex) const { 309410227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com return fTs[tIndex].fWindValue == 0 && fTs[tIndex].fOppValue == 0; 309510227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com } 309610227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com 30977db7c6bba9e9a61ad574a1d60b65bce4563beee5caryclark@google.com bool isConnected(int startIndex, int endIndex) const { 30987db7c6bba9e9a61ad574a1d60b65bce4563beee5caryclark@google.com return fTs[startIndex].fWindSum != SK_MinS32 30997db7c6bba9e9a61ad574a1d60b65bce4563beee5caryclark@google.com || fTs[endIndex].fWindSum != SK_MinS32; 31007db7c6bba9e9a61ad574a1d60b65bce4563beee5caryclark@google.com } 31017db7c6bba9e9a61ad574a1d60b65bce4563beee5caryclark@google.com 3102235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com bool isHorizontal() const { 3103235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com return fBounds.fTop == fBounds.fBottom; 3104235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com } 3105235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com 310615fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com bool isLinear(int start, int end) const { 310715fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com if (fVerb == SkPath::kLine_Verb) { 310815fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com return true; 310915fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com } 311015fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com if (fVerb == SkPath::kQuad_Verb) { 311115fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com SkPoint qPart[3]; 311215fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com QuadSubDivide(fPts, fTs[start].fT, fTs[end].fT, qPart); 311315fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com return QuadIsLinear(qPart); 311415fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com } else { 311515fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com SkASSERT(fVerb == SkPath::kCubic_Verb); 311615fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com SkPoint cPart[4]; 311715fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com CubicSubDivide(fPts, fTs[start].fT, fTs[end].fT, cPart); 311815fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com return CubicIsLinear(cPart); 311915fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com } 312015fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com } 3121b973801328ef25105f7f3255ab912a1b675da056caryclark@google.com 3122b973801328ef25105f7f3255ab912a1b675da056caryclark@google.com // OPTIMIZE: successive calls could start were the last leaves off 3123b973801328ef25105f7f3255ab912a1b675da056caryclark@google.com // or calls could specialize to walk forwards or backwards 3124b973801328ef25105f7f3255ab912a1b675da056caryclark@google.com bool isMissing(double startT) const { 3125b973801328ef25105f7f3255ab912a1b675da056caryclark@google.com size_t tCount = fTs.count(); 3126b973801328ef25105f7f3255ab912a1b675da056caryclark@google.com for (size_t index = 0; index < tCount; ++index) { 31273350c3c68ab75cd08721da3a938b8d2b10096d70caryclark@google.com if (approximately_zero(startT - fTs[index].fT)) { 3128b973801328ef25105f7f3255ab912a1b675da056caryclark@google.com return false; 3129b973801328ef25105f7f3255ab912a1b675da056caryclark@google.com } 3130b973801328ef25105f7f3255ab912a1b675da056caryclark@google.com } 3131b973801328ef25105f7f3255ab912a1b675da056caryclark@google.com return true; 3132b973801328ef25105f7f3255ab912a1b675da056caryclark@google.com } 3133b973801328ef25105f7f3255ab912a1b675da056caryclark@google.com 31348dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com bool isSimple(int end) const { 3135a3f05facab01712a1b58e60a70b0dbdb90a39830caryclark@google.com int count = fTs.count(); 3136a3f05facab01712a1b58e60a70b0dbdb90a39830caryclark@google.com if (count == 2) { 3137a3f05facab01712a1b58e60a70b0dbdb90a39830caryclark@google.com return true; 3138a3f05facab01712a1b58e60a70b0dbdb90a39830caryclark@google.com } 31398dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com double t = fTs[end].fT; 31403350c3c68ab75cd08721da3a938b8d2b10096d70caryclark@google.com if (approximately_less_than_zero(t)) { 31413350c3c68ab75cd08721da3a938b8d2b10096d70caryclark@google.com return !approximately_less_than_zero(fTs[1].fT); 3142a3f05facab01712a1b58e60a70b0dbdb90a39830caryclark@google.com } 31433350c3c68ab75cd08721da3a938b8d2b10096d70caryclark@google.com if (approximately_greater_than_one(t)) { 31443350c3c68ab75cd08721da3a938b8d2b10096d70caryclark@google.com return !approximately_greater_than_one(fTs[count - 2].fT); 3145a3f05facab01712a1b58e60a70b0dbdb90a39830caryclark@google.com } 31468dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com return false; 3147a3f05facab01712a1b58e60a70b0dbdb90a39830caryclark@google.com } 3148fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 3149fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com bool isVertical() const { 3150fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com return fBounds.fLeft == fBounds.fRight; 3151fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 3152b89a03c890668f98d9f8b269b6ad00824409435bskia.committer@gmail.com 3153db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com bool isVertical(int start, int end) const { 3154db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com return (*SegmentVertical[fVerb])(fPts, start, end); 3155db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com } 3156a833b5c40d0516237e0889fce8af44880423fc20caryclark@google.com 3157fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com SkScalar leftMost(int start, int end) const { 3158fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com return (*SegmentLeftMost[fVerb])(fPts, fTs[start].fT, fTs[end].fT); 3159fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 3160d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com 3161495f8e435b677f28913cd2adc8caa8d3d766dd17caryclark@google.com // this span is excluded by the winding rule -- chase the ends 3162495f8e435b677f28913cd2adc8caa8d3d766dd17caryclark@google.com // as long as they are unambiguous to mark connections as done 3163495f8e435b677f28913cd2adc8caa8d3d766dd17caryclark@google.com // and give them the same winding value 316459823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com Span* markAndChaseDone(const Angle* angle, int winding) { 3165495f8e435b677f28913cd2adc8caa8d3d766dd17caryclark@google.com int index = angle->start(); 3166495f8e435b677f28913cd2adc8caa8d3d766dd17caryclark@google.com int endIndex = angle->end(); 316731143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com return markAndChaseDone(index, endIndex, winding); 316831143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com } 316931143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com 317031143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com Span* markAndChaseDone(int index, int endIndex, int winding) { 3171495f8e435b677f28913cd2adc8caa8d3d766dd17caryclark@google.com int step = SkSign32(endIndex - index); 31724eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com int min = SkMin32(index, endIndex); 31734eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com markDone(min, winding); 31744eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com Span* last; 31754eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com Segment* other = this; 31764eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com while ((other = other->nextChase(index, step, min, last))) { 31774eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com other->markDone(min, winding); 31784eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com } 3179fa4a6e964691ff9a88bc047418abe2d4324dfcaecaryclark@google.com return last; 3180495f8e435b677f28913cd2adc8caa8d3d766dd17caryclark@google.com } 3181d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com 31827fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com Span* markAndChaseDoneBinary(const Angle* angle, int winding, int oppWinding) { 31837fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com int index = angle->start(); 31847fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com int endIndex = angle->end(); 318531143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com int step = SkSign32(endIndex - index); 31864eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com int min = SkMin32(index, endIndex); 31874eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com markDoneBinary(min, winding, oppWinding); 31884eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com Span* last; 31894eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com Segment* other = this; 31904eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com while ((other = other->nextChase(index, step, min, last))) { 31914eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com other->markDoneBinary(min, winding, oppWinding); 31924eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com } 31937fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com return last; 31947fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com } 3195c3d7d90973528527131c72549b10c2a21300e0acskia.committer@gmail.com 31967fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com Span* markAndChaseDoneBinary(int index, int endIndex) { 31977fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com int step = SkSign32(endIndex - index); 31984eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com int min = SkMin32(index, endIndex); 31994eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com markDoneBinary(min); 32004eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com Span* last; 32014eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com Segment* other = this; 32024eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com while ((other = other->nextChase(index, step, min, last))) { 3203e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com if (other->done()) { 3204e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com return NULL; 3205e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com } 32064eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com other->markDoneBinary(min); 32074eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com } 320831143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com return last; 320931143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com } 321031143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com 3211db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com Span* markAndChaseDoneUnary(int index, int endIndex) { 3212db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com int step = SkSign32(endIndex - index); 3213db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com int min = SkMin32(index, endIndex); 3214db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com markDoneUnary(min); 3215db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com Span* last; 3216db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com Segment* other = this; 3217db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com while ((other = other->nextChase(index, step, min, last))) { 3218db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com if (other->done()) { 3219db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com return NULL; 3220db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com } 3221db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com other->markDoneUnary(min); 3222db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com } 3223db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com return last; 3224db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com } 3225db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com 3226d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com Span* markAndChaseDoneUnary(const Angle* angle, int winding) { 3227d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com int index = angle->start(); 3228d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com int endIndex = angle->end(); 3229d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com return markAndChaseDone(index, endIndex, winding); 3230d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com } 3231d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com 32324eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com Span* markAndChaseWinding(const Angle* angle, const int winding) { 32338dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com int index = angle->start(); 32348dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com int endIndex = angle->end(); 3235c7b4be7f110bc7b487c3c3f28d82877584e74c2fskia.committer@gmail.com int step = SkSign32(endIndex - index); 32368dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com int min = SkMin32(index, endIndex); 323759823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com markWinding(min, winding); 32384eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com Span* last; 32394eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com Segment* other = this; 32404eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com while ((other = other->nextChase(index, step, min, last))) { 32414eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com if (other->fTs[min].fWindSum != SK_MinS32) { 32424eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com SkASSERT(other->fTs[min].fWindSum == winding); 32434eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com return NULL; 32444eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com } 32454eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com other->markWinding(min, winding); 32464eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com } 3247fa4a6e964691ff9a88bc047418abe2d4324dfcaecaryclark@google.com return last; 32488dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com } 3249c3d7d90973528527131c72549b10c2a21300e0acskia.committer@gmail.com 32507fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com Span* markAndChaseWinding(int index, int endIndex, int winding, int oppWinding) { 325131143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com int min = SkMin32(index, endIndex); 325231143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com int step = SkSign32(endIndex - index); 325331143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com markWinding(min, winding, oppWinding); 32544eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com Span* last; 32554eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com Segment* other = this; 32564eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com while ((other = other->nextChase(index, step, min, last))) { 32574eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com if (other->fTs[min].fWindSum != SK_MinS32) { 32584aaaaeace7e617ddc473645756fb7c20790bc270caryclark@google.com SkASSERT(other->fTs[min].fWindSum == winding || other->fTs[min].fLoop); 32594eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com return NULL; 32604eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com } 32614eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com other->markWinding(min, winding, oppWinding); 32624eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com } 326331143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com return last; 326431143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com } 326531143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com 32667fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com Span* markAndChaseWinding(const Angle* angle, int winding, int oppWinding) { 32677fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com int start = angle->start(); 32687fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com int end = angle->end(); 32697fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com return markAndChaseWinding(start, end, winding, oppWinding); 32707fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com } 32717fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com 3272d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com Span* markAngle(int maxWinding, int sumWinding, bool activeAngle, const Angle* angle) { 3273d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com SkASSERT(angle->segment() == this); 3274d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com if (useInnerWinding(maxWinding, sumWinding)) { 3275d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com maxWinding = sumWinding; 3276d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com } 3277d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com Span* last; 3278d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com if (activeAngle) { 3279d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com last = markAndChaseWinding(angle, maxWinding); 3280d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com } else { 3281d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com last = markAndChaseDoneUnary(angle, maxWinding); 3282d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com } 3283d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com return last; 3284d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com } 3285d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com 32867fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com Span* markAngle(int maxWinding, int sumWinding, int oppMaxWinding, int oppSumWinding, 32877fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com bool activeAngle, const Angle* angle) { 32887fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com SkASSERT(angle->segment() == this); 32897fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com if (useInnerWinding(maxWinding, sumWinding)) { 32907fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com maxWinding = sumWinding; 32917fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com } 32927fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com if (oppMaxWinding != oppSumWinding && useInnerWinding(oppMaxWinding, oppSumWinding)) { 32937fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com oppMaxWinding = oppSumWinding; 32947fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com } 32957fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com Span* last; 32967fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com if (activeAngle) { 32977fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com last = markAndChaseWinding(angle, maxWinding, oppMaxWinding); 32987fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com } else { 32997fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com last = markAndChaseDoneBinary(angle, maxWinding, oppMaxWinding); 33007fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com } 33017fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com return last; 33027fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com } 33037fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com 3304495f8e435b677f28913cd2adc8caa8d3d766dd17caryclark@google.com // FIXME: this should also mark spans with equal (x,y) 33058dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com // This may be called when the segment is already marked done. While this 33068dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com // wastes time, it shouldn't do any more than spin through the T spans. 3307d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com // OPTIMIZATION: abort on first done found (assuming that this code is 33088dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com // always called to mark segments done). 330959823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com void markDone(int index, int winding) { 33108dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com // SkASSERT(!done()); 331124bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com SkASSERT(winding); 3312af46cff4ee6099cebf3aa395805748af7d193a31caryclark@google.com double referenceT = fTs[index].fT; 3313af46cff4ee6099cebf3aa395805748af7d193a31caryclark@google.com int lesser = index; 3314a461ff0866526bc51dbd4c4f9f066a727ec21510caryclark@google.com while (--lesser >= 0 && precisely_negative(referenceT - fTs[lesser].fT)) { 3315a461ff0866526bc51dbd4c4f9f066a727ec21510caryclark@google.com markOneDone(__FUNCTION__, lesser, winding); 3316a461ff0866526bc51dbd4c4f9f066a727ec21510caryclark@google.com } 3317a461ff0866526bc51dbd4c4f9f066a727ec21510caryclark@google.com do { 3318a461ff0866526bc51dbd4c4f9f066a727ec21510caryclark@google.com markOneDone(__FUNCTION__, index, winding); 3319a461ff0866526bc51dbd4c4f9f066a727ec21510caryclark@google.com } while (++index < fTs.count() && precisely_negative(fTs[index].fT - referenceT)); 332031143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com } 332131143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com 33227fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com void markDoneBinary(int index, int winding, int oppWinding) { 332331143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com // SkASSERT(!done()); 33249f3e9a5a17a7546e1c5bfde1eb7e6e9c11870333caryclark@google.com SkASSERT(winding || oppWinding); 332531143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com double referenceT = fTs[index].fT; 332631143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com int lesser = index; 332731143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com while (--lesser >= 0 && precisely_negative(referenceT - fTs[lesser].fT)) { 33287fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com markOneDoneBinary(__FUNCTION__, lesser, winding, oppWinding); 33297fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com } 33307fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com do { 33317fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com markOneDoneBinary(__FUNCTION__, index, winding, oppWinding); 33327fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com } while (++index < fTs.count() && precisely_negative(fTs[index].fT - referenceT)); 33337fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com } 33347fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com 33357fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com void markDoneBinary(int index) { 33367fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com double referenceT = fTs[index].fT; 33377fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com int lesser = index; 33387fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com while (--lesser >= 0 && precisely_negative(referenceT - fTs[lesser].fT)) { 33397fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com markOneDoneBinary(__FUNCTION__, lesser); 3340af46cff4ee6099cebf3aa395805748af7d193a31caryclark@google.com } 3341af46cff4ee6099cebf3aa395805748af7d193a31caryclark@google.com do { 33427fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com markOneDoneBinary(__FUNCTION__, index); 334331143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com } while (++index < fTs.count() && precisely_negative(fTs[index].fT - referenceT)); 33448dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com } 3345549c93ef979aeb4dcb65b3d0fca4b58e8ab62227skia.committer@gmail.com 3346d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com void markDoneUnary(int index, int winding) { 3347d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com // SkASSERT(!done()); 3348d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com SkASSERT(winding); 3349d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com double referenceT = fTs[index].fT; 3350d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com int lesser = index; 3351d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com while (--lesser >= 0 && precisely_negative(referenceT - fTs[lesser].fT)) { 3352d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com markOneDoneUnary(__FUNCTION__, lesser, winding); 3353d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com } 3354d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com do { 3355d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com markOneDoneUnary(__FUNCTION__, index, winding); 3356d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com } while (++index < fTs.count() && precisely_negative(fTs[index].fT - referenceT)); 3357d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com } 3358d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com 3359d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com void markDoneUnary(int index) { 3360d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com double referenceT = fTs[index].fT; 3361d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com int lesser = index; 3362d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com while (--lesser >= 0 && precisely_negative(referenceT - fTs[lesser].fT)) { 3363d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com markOneDoneUnary(__FUNCTION__, lesser); 3364d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com } 3365d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com do { 3366d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com markOneDoneUnary(__FUNCTION__, index); 3367d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com } while (++index < fTs.count() && precisely_negative(fTs[index].fT - referenceT)); 3368d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com } 3369d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com 337024bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com void markOneDone(const char* funName, int tIndex, int winding) { 337124bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com Span* span = markOneWinding(funName, tIndex, winding); 337224bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com if (!span) { 337324bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com return; 337424bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com } 337524bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com span->fDone = true; 337624bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com fDoneSpans++; 337724bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com } 3378d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com 33797fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com void markOneDoneBinary(const char* funName, int tIndex) { 33807fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com Span* span = verifyOneWinding(funName, tIndex); 33817fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com if (!span) { 33827fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com return; 33837fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com } 33847fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com span->fDone = true; 33857fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com fDoneSpans++; 33867fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com } 33877fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com 33887fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com void markOneDoneBinary(const char* funName, int tIndex, int winding, int oppWinding) { 338931143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com Span* span = markOneWinding(funName, tIndex, winding, oppWinding); 339031143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com if (!span) { 339131143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com return; 339231143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com } 339331143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com span->fDone = true; 339431143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com fDoneSpans++; 339531143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com } 339631143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com 3397d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com void markOneDoneUnary(const char* funName, int tIndex) { 3398d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com Span* span = verifyOneWindingU(funName, tIndex); 3399d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com if (!span) { 3400d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com return; 3401d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com } 3402d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com span->fDone = true; 3403d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com fDoneSpans++; 3404d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com } 3405d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com 3406d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com void markOneDoneUnary(const char* funName, int tIndex, int winding) { 3407d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com Span* span = markOneWinding(funName, tIndex, winding); 3408d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com if (!span) { 3409d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com return; 3410d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com } 3411d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com span->fDone = true; 3412d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com fDoneSpans++; 3413d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com } 3414d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com 341524bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com Span* markOneWinding(const char* funName, int tIndex, int winding) { 341624bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com Span& span = fTs[tIndex]; 341724bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com if (span.fDone) { 341824bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com return NULL; 341924bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com } 342024bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com #if DEBUG_MARK_DONE 342124bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com debugShowNewWinding(funName, span, winding); 342224bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com #endif 342324bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com SkASSERT(span.fWindSum == SK_MinS32 || span.fWindSum == winding); 342403f970652e07c6832cae41fa374cb68ca80d472ccaryclark@google.com #ifdef SK_DEBUG 342524bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com SkASSERT(abs(winding) <= gDebugMaxWindSum); 342603f970652e07c6832cae41fa374cb68ca80d472ccaryclark@google.com #endif 342724bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com span.fWindSum = winding; 342824bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com return &span; 342924bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com } 343024c29d91caa4eaa31f9e77bad614627a252df35eskia.committer@gmail.com 343131143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com Span* markOneWinding(const char* funName, int tIndex, int winding, int oppWinding) { 343231143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com Span& span = fTs[tIndex]; 343331143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com if (span.fDone) { 343431143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com return NULL; 343531143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com } 343631143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com #if DEBUG_MARK_DONE 343731143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com debugShowNewWinding(funName, span, winding, oppWinding); 343831143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com #endif 343931143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com SkASSERT(span.fWindSum == SK_MinS32 || span.fWindSum == winding); 344031143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com #ifdef SK_DEBUG 344131143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com SkASSERT(abs(winding) <= gDebugMaxWindSum); 344231143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com #endif 344331143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com span.fWindSum = winding; 344431143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com SkASSERT(span.fOppSum == SK_MinS32 || span.fOppSum == oppWinding); 344531143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com #ifdef SK_DEBUG 344631143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com SkASSERT(abs(oppWinding) <= gDebugMaxWindSum); 344731143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com #endif 344831143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com span.fOppSum = oppWinding; 344931143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com return &span; 345031143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com } 345131143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com 34521304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com bool controls_contained_by_ends(int tStart, int tEnd) const { 34531304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com if (fVerb != SkPath::kCubic_Verb) { 34541304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com return false; 34551304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com } 34561304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com MAKE_CONST_CUBIC(aCubic, fPts); 34571304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com Cubic dst; 34581304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com sub_divide(aCubic, fTs[tStart].fT, fTs[tEnd].fT, dst); 34591304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com return ::controls_contained_by_ends(dst); 34601304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com } 34611304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com 34621304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com // from http://stackoverflow.com/questions/1165647/how-to-determine-if-a-list-of-polygon-points-are-in-clockwise-order 34631304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com bool clockwise(int tStart, int tEnd) const { 34641304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com SkASSERT(fVerb != SkPath::kLine_Verb); 34655e0500fb5f17fe14db42fc3e0aad08e6b41ccc5fcaryclark@google.com SkPoint edge[4]; 3466c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com subDivide(tStart, tEnd, edge); 34671304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com double sum = (edge[0].fX - edge[fVerb].fX) * (edge[0].fY + edge[fVerb].fY); 34681304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com if (fVerb == SkPath::kCubic_Verb) { 34691304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com SkScalar lesser = SkTMin(edge[0].fY, edge[3].fY); 34701304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com if (edge[1].fY < lesser && edge[2].fY < lesser) { 34711304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com _Line tangent1 = { {edge[0].fX, edge[0].fY}, {edge[1].fX, edge[1].fY} }; 34721304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com _Line tangent2 = { {edge[2].fX, edge[2].fY}, {edge[3].fX, edge[3].fY} }; 34731304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com if (testIntersect(tangent1, tangent2)) { 34741304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com SkPoint topPt = CubicTop(fPts, fTs[tStart].fT, fTs[tEnd].fT); 34751304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com sum += (topPt.fX - edge[0].fX) * (topPt.fY + edge[0].fY); 34761304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com sum += (edge[3].fX - topPt.fX) * (edge[3].fY + topPt.fY); 34771304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com return sum <= 0; 34781304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com } 34791304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com } 34805e0500fb5f17fe14db42fc3e0aad08e6b41ccc5fcaryclark@google.com } 34811304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com for (int idx = 0; idx < fVerb; ++idx){ 34821304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com sum += (edge[idx + 1].fX - edge[idx].fX) * (edge[idx + 1].fY + edge[idx].fY); 34831304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com } 34841304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com return sum <= 0; 34851304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com } 348603682beb8c1c5dfe714933e9419e1412b33c932dskia.committer@gmail.com 34871304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com bool monotonic_in_y(int tStart, int tEnd) const { 34881304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com if (fVerb != SkPath::kCubic_Verb) { 34891304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com return false; 34901304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com } 34911304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com MAKE_CONST_CUBIC(aCubic, fPts); 34921304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com Cubic dst; 34931304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com sub_divide(aCubic, fTs[tStart].fT, fTs[tEnd].fT, dst); 34941304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com return ::monotonic_in_y(dst); 34951304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com } 34961304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com 34971304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com bool serpentine(int tStart, int tEnd) const { 34981304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com if (fVerb != SkPath::kCubic_Verb) { 34991304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com return false; 35001304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com } 35011304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com MAKE_CONST_CUBIC(aCubic, fPts); 35021304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com Cubic dst; 35031304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com sub_divide(aCubic, fTs[tStart].fT, fTs[tEnd].fT, dst); 35041304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com return ::serpentine(dst); 35055e0500fb5f17fe14db42fc3e0aad08e6b41ccc5fcaryclark@google.com } 35065e0500fb5f17fe14db42fc3e0aad08e6b41ccc5fcaryclark@google.com 35077fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com Span* verifyOneWinding(const char* funName, int tIndex) { 35087fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com Span& span = fTs[tIndex]; 35097fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com if (span.fDone) { 35107fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com return NULL; 35117fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com } 35127fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com #if DEBUG_MARK_DONE 35137fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com debugShowNewWinding(funName, span, span.fWindSum, span.fOppSum); 35147fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com #endif 35157fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com SkASSERT(span.fWindSum != SK_MinS32); 35167fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com SkASSERT(span.fOppSum != SK_MinS32); 35177fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com return &span; 35187fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com } 35197fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com 3520d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com Span* verifyOneWindingU(const char* funName, int tIndex) { 3521d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com Span& span = fTs[tIndex]; 3522d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com if (span.fDone) { 3523d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com return NULL; 3524d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com } 3525d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com #if DEBUG_MARK_DONE 3526d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com debugShowNewWinding(funName, span, span.fWindSum); 3527d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com #endif 3528d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com SkASSERT(span.fWindSum != SK_MinS32); 3529d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com return &span; 3530d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com } 3531d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com 3532f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com // note that just because a span has one end that is unsortable, that's 3533f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com // not enough to mark it done. The other end may be sortable, allowing the 3534f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com // span to be added. 35358f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com // FIXME: if abs(start - end) > 1, mark intermediates as unsortable on both ends 3536fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com void markUnsortable(int start, int end) { 3537fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com Span* span = &fTs[start]; 3538fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com if (start < end) { 35398f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com#if DEBUG_UNSORTABLE 35401304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com debugShowNewWinding(__FUNCTION__, *span, 0); 3541d9f65e3df45c9b4994c70f6bf13d29985afd2f65skia.committer@gmail.com#endif 3542fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com span->fUnsortableStart = true; 3543fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com } else { 3544fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com --span; 35458f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com#if DEBUG_UNSORTABLE 35461304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com debugShowNewWinding(__FUNCTION__, *span, 0); 3547d9f65e3df45c9b4994c70f6bf13d29985afd2f65skia.committer@gmail.com#endif 3548fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com span->fUnsortableEnd = true; 3549fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com } 3550f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com if (!span->fUnsortableStart || !span->fUnsortableEnd || span->fDone) { 3551fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com return; 3552fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com } 3553fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com span->fDone = true; 3554fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com fDoneSpans++; 3555fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com } 35568dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com 355759823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com void markWinding(int index, int winding) { 3558afe56de6361a81eef537ddd8f6d5626c8546d4c7caryclark@google.com // SkASSERT(!done()); 355924bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com SkASSERT(winding); 35608dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com double referenceT = fTs[index].fT; 35618dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com int lesser = index; 3562a461ff0866526bc51dbd4c4f9f066a727ec21510caryclark@google.com while (--lesser >= 0 && precisely_negative(referenceT - fTs[lesser].fT)) { 3563a461ff0866526bc51dbd4c4f9f066a727ec21510caryclark@google.com markOneWinding(__FUNCTION__, lesser, winding); 3564a461ff0866526bc51dbd4c4f9f066a727ec21510caryclark@google.com } 3565a461ff0866526bc51dbd4c4f9f066a727ec21510caryclark@google.com do { 3566a461ff0866526bc51dbd4c4f9f066a727ec21510caryclark@google.com markOneWinding(__FUNCTION__, index, winding); 3567a461ff0866526bc51dbd4c4f9f066a727ec21510caryclark@google.com } while (++index < fTs.count() && precisely_negative(fTs[index].fT - referenceT)); 356831143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com } 356931143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com 357031143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com void markWinding(int index, int winding, int oppWinding) { 357131143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com // SkASSERT(!done()); 35724eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com SkASSERT(winding || oppWinding); 357331143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com double referenceT = fTs[index].fT; 357431143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com int lesser = index; 357531143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com while (--lesser >= 0 && precisely_negative(referenceT - fTs[lesser].fT)) { 357631143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com markOneWinding(__FUNCTION__, lesser, winding, oppWinding); 35778dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com } 35788dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com do { 357931143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com markOneWinding(__FUNCTION__, index, winding, oppWinding); 358031143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com } while (++index < fTs.count() && precisely_negative(fTs[index].fT - referenceT)); 3581af46cff4ee6099cebf3aa395805748af7d193a31caryclark@google.com } 3582fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 35832ddff9388694263c7be9347de7eb768cd0847997caryclark@google.com void matchWindingValue(int tIndex, double t, bool borrowWind) { 35840c803d048c826fadfeed51207488867e17e0cc10caryclark@google.com int nextDoorWind = SK_MaxS32; 35857ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com int nextOppWind = SK_MaxS32; 35860c803d048c826fadfeed51207488867e17e0cc10caryclark@google.com if (tIndex > 0) { 35870c803d048c826fadfeed51207488867e17e0cc10caryclark@google.com const Span& below = fTs[tIndex - 1]; 35883350c3c68ab75cd08721da3a938b8d2b10096d70caryclark@google.com if (approximately_negative(t - below.fT)) { 35890c803d048c826fadfeed51207488867e17e0cc10caryclark@google.com nextDoorWind = below.fWindValue; 35907ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com nextOppWind = below.fOppValue; 35910c803d048c826fadfeed51207488867e17e0cc10caryclark@google.com } 35920c803d048c826fadfeed51207488867e17e0cc10caryclark@google.com } 35930c803d048c826fadfeed51207488867e17e0cc10caryclark@google.com if (nextDoorWind == SK_MaxS32 && tIndex + 1 < fTs.count()) { 35940c803d048c826fadfeed51207488867e17e0cc10caryclark@google.com const Span& above = fTs[tIndex + 1]; 35953350c3c68ab75cd08721da3a938b8d2b10096d70caryclark@google.com if (approximately_negative(above.fT - t)) { 35960c803d048c826fadfeed51207488867e17e0cc10caryclark@google.com nextDoorWind = above.fWindValue; 35977ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com nextOppWind = above.fOppValue; 35980c803d048c826fadfeed51207488867e17e0cc10caryclark@google.com } 35990c803d048c826fadfeed51207488867e17e0cc10caryclark@google.com } 36002ddff9388694263c7be9347de7eb768cd0847997caryclark@google.com if (nextDoorWind == SK_MaxS32 && borrowWind && tIndex > 0 && t < 1) { 36012ddff9388694263c7be9347de7eb768cd0847997caryclark@google.com const Span& below = fTs[tIndex - 1]; 36022ddff9388694263c7be9347de7eb768cd0847997caryclark@google.com nextDoorWind = below.fWindValue; 36037ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com nextOppWind = below.fOppValue; 36042ddff9388694263c7be9347de7eb768cd0847997caryclark@google.com } 36050c803d048c826fadfeed51207488867e17e0cc10caryclark@google.com if (nextDoorWind != SK_MaxS32) { 36060c803d048c826fadfeed51207488867e17e0cc10caryclark@google.com Span& newSpan = fTs[tIndex]; 36070c803d048c826fadfeed51207488867e17e0cc10caryclark@google.com newSpan.fWindValue = nextDoorWind; 36087ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com newSpan.fOppValue = nextOppWind; 36094eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com if (!nextDoorWind && !nextOppWind && !newSpan.fDone) { 36100c803d048c826fadfeed51207488867e17e0cc10caryclark@google.com newSpan.fDone = true; 36110c803d048c826fadfeed51207488867e17e0cc10caryclark@google.com ++fDoneSpans; 36120c803d048c826fadfeed51207488867e17e0cc10caryclark@google.com } 36130c803d048c826fadfeed51207488867e17e0cc10caryclark@google.com } 36140c803d048c826fadfeed51207488867e17e0cc10caryclark@google.com } 36150c803d048c826fadfeed51207488867e17e0cc10caryclark@google.com 3616db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com bool moreHorizontal(int index, int endIndex, bool& unsortable) const { 3617db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com // find bounds 3618db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com Bounds bounds; 3619db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com bounds.setPoint(xyAtT(index)); 3620db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com bounds.add(xyAtT(endIndex)); 3621db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com SkScalar width = bounds.width(); 3622db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com SkScalar height = bounds.height(); 3623db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com if (width > height) { 3624db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com if (approximately_negative(width)) { 3625db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com unsortable = true; // edge is too small to resolve meaningfully 3626db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com } 3627db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com return false; 3628db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com } else { 3629db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com if (approximately_negative(height)) { 3630db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com unsortable = true; // edge is too small to resolve meaningfully 3631db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com } 3632db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com return true; 3633db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com } 3634db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com } 3635db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com 36369764cc6c109dba208592fe5f16447b8439375746caryclark@google.com // return span if when chasing, two or more radiating spans are not done 36379764cc6c109dba208592fe5f16447b8439375746caryclark@google.com // OPTIMIZATION: ? multiple spans is detected when there is only one valid 36389764cc6c109dba208592fe5f16447b8439375746caryclark@google.com // candidate and the remaining spans have windValue == 0 (canceled by 36399764cc6c109dba208592fe5f16447b8439375746caryclark@google.com // coincidence). The coincident edges could either be removed altogether, 36409764cc6c109dba208592fe5f16447b8439375746caryclark@google.com // or this code could be more complicated in detecting this case. Worth it? 36419764cc6c109dba208592fe5f16447b8439375746caryclark@google.com bool multipleSpans(int end) const { 36429764cc6c109dba208592fe5f16447b8439375746caryclark@google.com return end > 0 && end < fTs.count() - 1; 364388f7d0cb09707355bc9079d4b0569537e8048fa9caryclark@google.com } 364488f7d0cb09707355bc9079d4b0569537e8048fa9caryclark@google.com 3645db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com bool nextCandidate(int& start, int& end) const { 364610227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com while (fTs[end].fDone) { 364710227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com if (fTs[end].fT == 1) { 3648db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com return false; 3649db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com } 365010227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com ++end; 365110227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com } 365210227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com start = end; 365310227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com end = nextExactSpan(start, 1); 3654db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com return true; 3655db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com } 3656db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com 36571ab0aac67247bf3ec1f23b220456d316d9a80b45caryclark@google.com Segment* nextChase(int& index, const int step, int& min, Span*& last) { 36584eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com int end = nextExactSpan(index, step); 36594eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com SkASSERT(end >= 0); 36604eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com if (multipleSpans(end)) { 36614eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com last = &fTs[end]; 36624eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com return NULL; 36634eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com } 36644eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com const Span& endSpan = fTs[end]; 36654eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com Segment* other = endSpan.fOther; 36664eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com index = endSpan.fOtherIndex; 3667aa35831d1d0e4c798a63fe772430adc4f3a038cdcaryclark@google.com SkASSERT(index >= 0); 36684eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com int otherEnd = other->nextExactSpan(index, step); 3669aa35831d1d0e4c798a63fe772430adc4f3a038cdcaryclark@google.com SkASSERT(otherEnd >= 0); 36704eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com min = SkMin32(index, otherEnd); 36714eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com return other; 36724eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com } 36734eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com 3674a3f05facab01712a1b58e60a70b0dbdb90a39830caryclark@google.com // This has callers for two different situations: one establishes the end 3675a3f05facab01712a1b58e60a70b0dbdb90a39830caryclark@google.com // of the current span, and one establishes the beginning of the next span 3676a3f05facab01712a1b58e60a70b0dbdb90a39830caryclark@google.com // (thus the name). When this is looking for the end of the current span, 3677a3f05facab01712a1b58e60a70b0dbdb90a39830caryclark@google.com // coincidence is found when the beginning Ts contain -step and the end 3678a3f05facab01712a1b58e60a70b0dbdb90a39830caryclark@google.com // contains step. When it is looking for the beginning of the next, the 3679a3f05facab01712a1b58e60a70b0dbdb90a39830caryclark@google.com // first Ts found can be ignored and the last Ts should contain -step. 36808dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com // OPTIMIZATION: probably should split into two functions 3681a3f05facab01712a1b58e60a70b0dbdb90a39830caryclark@google.com int nextSpan(int from, int step) const { 3682495f8e435b677f28913cd2adc8caa8d3d766dd17caryclark@google.com const Span& fromSpan = fTs[from]; 3683495f8e435b677f28913cd2adc8caa8d3d766dd17caryclark@google.com int count = fTs.count(); 3684495f8e435b677f28913cd2adc8caa8d3d766dd17caryclark@google.com int to = from; 3685495f8e435b677f28913cd2adc8caa8d3d766dd17caryclark@google.com while (step > 0 ? ++to < count : --to >= 0) { 3686495f8e435b677f28913cd2adc8caa8d3d766dd17caryclark@google.com const Span& span = fTs[to]; 36873350c3c68ab75cd08721da3a938b8d2b10096d70caryclark@google.com if (approximately_zero(span.fT - fromSpan.fT)) { 3688495f8e435b677f28913cd2adc8caa8d3d766dd17caryclark@google.com continue; 3689495f8e435b677f28913cd2adc8caa8d3d766dd17caryclark@google.com } 3690495f8e435b677f28913cd2adc8caa8d3d766dd17caryclark@google.com return to; 3691495f8e435b677f28913cd2adc8caa8d3d766dd17caryclark@google.com } 3692495f8e435b677f28913cd2adc8caa8d3d766dd17caryclark@google.com return -1; 3693495f8e435b677f28913cd2adc8caa8d3d766dd17caryclark@google.com } 3694439cb51451ef6f55f65dab90eb7f91acf67ea8feskia.committer@gmail.com 36956aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com // FIXME 36966aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com // this returns at any difference in T, vs. a preset minimum. It may be 36976aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com // that all callers to nextSpan should use this instead. 3698fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com // OPTIMIZATION splitting this into separate loops for up/down steps 3699fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com // would allow using precisely_negative instead of precisely_zero 37006aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com int nextExactSpan(int from, int step) const { 37016aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com const Span& fromSpan = fTs[from]; 37026aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com int count = fTs.count(); 37036aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com int to = from; 37046aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com while (step > 0 ? ++to < count : --to >= 0) { 37056aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com const Span& span = fTs[to]; 3706a461ff0866526bc51dbd4c4f9f066a727ec21510caryclark@google.com if (precisely_zero(span.fT - fromSpan.fT)) { 37076aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com continue; 37086aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com } 37096aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com return to; 37106aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com } 37116aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com return -1; 37126aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com } 3713055c7c299cb47eebd360b809ad58a0006e2e55f7skia.committer@gmail.com 3714235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com bool operand() const { 3715235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com return fOperand; 3716235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com } 3717235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com 371857cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com int oppSign(const Angle* angle) const { 371957cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com SkASSERT(angle->segment() == this); 372057cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com return oppSign(angle->start(), angle->end()); 372157cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com } 3722b3b6a60d35c8ee521252367200148561c628ee42skia.committer@gmail.com 372357cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com int oppSign(int startIndex, int endIndex) const { 372457cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com int result = startIndex < endIndex ? -fTs[startIndex].fOppValue 372557cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com : fTs[endIndex].fOppValue; 372657cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com#if DEBUG_WIND_BUMP 372757cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com SkDebugf("%s oppSign=%d\n", __FUNCTION__, result); 372857cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com#endif 372957cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com return result; 373057cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com } 373157cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com 373231143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com int oppSum(int tIndex) const { 373331143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com return fTs[tIndex].fOppSum; 373431143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com } 373531143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com 373631143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com int oppSum(const Angle* angle) const { 373731143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com int lesser = SkMin32(angle->start(), angle->end()); 373831143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com return fTs[lesser].fOppSum; 3739235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com } 3740495f8e435b677f28913cd2adc8caa8d3d766dd17caryclark@google.com 374157cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com int oppValue(int tIndex) const { 374257cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com return fTs[tIndex].fOppValue; 374357cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com } 374457cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com 3745e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com int oppValue(const Angle* angle) const { 3746e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com int lesser = SkMin32(angle->start(), angle->end()); 3747e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com return fTs[lesser].fOppValue; 3748e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com } 3749e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com 3750fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com const SkPoint* pts() const { 3751fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com return fPts; 3752fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 3753a833b5c40d0516237e0889fce8af44880423fc20caryclark@google.com 3754fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com void reset() { 37554eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com init(NULL, (SkPath::Verb) -1, false, false); 3756fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com fBounds.set(SK_ScalarMax, SK_ScalarMax, SK_ScalarMax, SK_ScalarMax); 3757fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com fTs.reset(); 3758a833b5c40d0516237e0889fce8af44880423fc20caryclark@google.com } 37591c9c0d37111e6ff7a74a2908bf62a0d3954f2bb5skia.committer@gmail.com 37604eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com void setOppXor(bool isOppXor) { 37614eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com fOppXor = isOppXor; 37624eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com } 376312eea2b10d6caaafe0a207d10b1e9322510983a2skia.committer@gmail.com 37647ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com void setSpanT(int index, double t) { 37657ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com Span& span = fTs[index]; 37667ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com span.fT = t; 37677ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com span.fOther->fTs[span.fOtherIndex].fOtherT = t; 37687ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com } 37694eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com 3770d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com void setUpWinding(int index, int endIndex, int& maxWinding, int& sumWinding) { 3771d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com int deltaSum = spanSign(index, endIndex); 3772d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com maxWinding = sumWinding; 3773d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com sumWinding = sumWinding -= deltaSum; 3774d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com } 3775d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com 37767fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com void setUpWindings(int index, int endIndex, int& sumMiWinding, int& sumSuWinding, 37777fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com int& maxWinding, int& sumWinding, int& oppMaxWinding, int& oppSumWinding) { 37787fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com int deltaSum = spanSign(index, endIndex); 37797fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com int oppDeltaSum = oppSign(index, endIndex); 37807fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com if (operand()) { 37817fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com maxWinding = sumSuWinding; 37827fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com sumWinding = sumSuWinding -= deltaSum; 37837fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com oppMaxWinding = sumMiWinding; 37847fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com oppSumWinding = sumMiWinding -= oppDeltaSum; 37857fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com } else { 37867fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com maxWinding = sumMiWinding; 37877fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com sumWinding = sumMiWinding -= deltaSum; 37887fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com oppMaxWinding = sumSuWinding; 37897fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com oppSumWinding = sumSuWinding -= oppDeltaSum; 37907fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com } 37917fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com } 37927fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com 3793f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com // This marks all spans unsortable so that this info is available for early 3794f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com // exclusion in find top and others. This could be optimized to only mark 3795f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com // adjacent spans that unsortable. However, this makes it difficult to later 3796f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com // determine starting points for edge detection in find top and the like. 3797c91dfe417a51f73c28ecf2708df1e0bee942c6eacaryclark@google.com static bool SortAngles(SkTDArray<Angle>& angles, SkTDArray<Angle*>& angleList) { 3798f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com bool sortable = true; 3799c91dfe417a51f73c28ecf2708df1e0bee942c6eacaryclark@google.com int angleCount = angles.count(); 3800c91dfe417a51f73c28ecf2708df1e0bee942c6eacaryclark@google.com int angleIndex; 3801c91dfe417a51f73c28ecf2708df1e0bee942c6eacaryclark@google.com angleList.setReserve(angleCount); 3802c91dfe417a51f73c28ecf2708df1e0bee942c6eacaryclark@google.com for (angleIndex = 0; angleIndex < angleCount; ++angleIndex) { 3803c91dfe417a51f73c28ecf2708df1e0bee942c6eacaryclark@google.com Angle& angle = angles[angleIndex]; 3804f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com *angleList.append() = ∠ 3805f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com sortable &= !angle.unsortable(); 3806f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com } 3807f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com if (sortable) { 3808f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com QSort<Angle>(angleList.begin(), angleList.end() - 1); 3809f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com for (angleIndex = 0; angleIndex < angleCount; ++angleIndex) { 3810f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com if (angles[angleIndex].unsortable()) { 3811f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com sortable = false; 3812f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com break; 3813f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com } 3814f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com } 3815f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com } 3816f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com if (!sortable) { 3817f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com for (angleIndex = 0; angleIndex < angleCount; ++angleIndex) { 3818f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com Angle& angle = angles[angleIndex]; 3819fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com angle.segment()->markUnsortable(angle.start(), angle.end()); 3820c91dfe417a51f73c28ecf2708df1e0bee942c6eacaryclark@google.com } 3821c91dfe417a51f73c28ecf2708df1e0bee942c6eacaryclark@google.com } 3822f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com return sortable; 3823c91dfe417a51f73c28ecf2708df1e0bee942c6eacaryclark@google.com } 3824c91dfe417a51f73c28ecf2708df1e0bee942c6eacaryclark@google.com 38251577e8f9c5bc8436cc71d3438c6d0b9f02c38338caryclark@google.com // OPTIMIZATION: mark as debugging only if used solely by tests 3826a3f05facab01712a1b58e60a70b0dbdb90a39830caryclark@google.com const Span& span(int tIndex) const { 3827a3f05facab01712a1b58e60a70b0dbdb90a39830caryclark@google.com return fTs[tIndex]; 3828a3f05facab01712a1b58e60a70b0dbdb90a39830caryclark@google.com } 3829d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com 3830235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com int spanSign(const Angle* angle) const { 3831235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com SkASSERT(angle->segment() == this); 3832235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com return spanSign(angle->start(), angle->end()); 3833235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com } 3834235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com 38358dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com int spanSign(int startIndex, int endIndex) const { 383631143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com int result = startIndex < endIndex ? -fTs[startIndex].fWindValue 383731143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com : fTs[endIndex].fWindValue; 38382ddff9388694263c7be9347de7eb768cd0847997caryclark@google.com#if DEBUG_WIND_BUMP 38392ddff9388694263c7be9347de7eb768cd0847997caryclark@google.com SkDebugf("%s spanSign=%d\n", __FUNCTION__, result); 38402ddff9388694263c7be9347de7eb768cd0847997caryclark@google.com#endif 38412ddff9388694263c7be9347de7eb768cd0847997caryclark@google.com return result; 38422ddff9388694263c7be9347de7eb768cd0847997caryclark@google.com } 384358433de8627c54ac2d68c65d248d67f48a79179dskia.committer@gmail.com 3844c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com void subDivide(int start, int end, SkPoint edge[4]) const { 3845c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com edge[0] = fTs[start].fPt; 3846c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com edge[fVerb] = fTs[end].fPt; 3847c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com if (fVerb == SkPath::kQuad_Verb || fVerb == SkPath::kCubic_Verb) { 3848c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com _Point sub[2] = {{ edge[0].fX, edge[0].fY}, {edge[fVerb].fX, edge[fVerb].fY }}; 3849c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com if (fVerb == SkPath::kQuad_Verb) { 3850c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com MAKE_CONST_QUAD(aQuad, fPts); 3851c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com edge[1] = sub_divide(aQuad, sub[0], sub[1], fTs[start].fT, fTs[end].fT).asSkPoint(); 3852c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com } else { 3853c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com MAKE_CONST_CUBIC(aCubic, fPts); 3854c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com sub_divide(aCubic, sub[0], sub[1], fTs[start].fT, fTs[end].fT, sub); 3855c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com edge[1] = sub[0].asSkPoint(); 3856c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com edge[2] = sub[1].asSkPoint(); 3857c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com } 3858c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com } 3859c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com } 386003682beb8c1c5dfe714933e9419e1412b33c932dskia.committer@gmail.com 38611304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com void subDivideBounds(int start, int end, Bounds& bounds) const { 38621304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com SkPoint edge[4]; 38631304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com subDivide(start, end, edge); 38641304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com (bounds.*setSegmentBounds[fVerb])(edge); 38651304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com } 38662ddff9388694263c7be9347de7eb768cd0847997caryclark@google.com 3867a3f05facab01712a1b58e60a70b0dbdb90a39830caryclark@google.com // OPTIMIZATION: mark as debugging only if used solely by tests 3868fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com double t(int tIndex) const { 3869fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com return fTs[tIndex].fT; 3870fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 3871d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com 387210227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com double tAtMid(int start, int end, double mid) const { 387310227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com return fTs[start].fT * (1 - mid) + fTs[end].fT * mid; 387410227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com } 387510227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com 38767fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com bool tiny(const Angle* angle) const { 38777fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com int start = angle->start(); 38787fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com int end = angle->end(); 3879f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com const Span& mSpan = fTs[SkMin32(start, end)]; 3880f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com return mSpan.fTiny; 3881f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com } 3882f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com 388318063441c23b334ab2ee7075c39ceeb8378e6fcfcaryclark@google.com static void TrackOutside(SkTDArray<double>& outsideTs, double end, 388418063441c23b334ab2ee7075c39ceeb8378e6fcfcaryclark@google.com double start) { 388518063441c23b334ab2ee7075c39ceeb8378e6fcfcaryclark@google.com int outCount = outsideTs.count(); 38863350c3c68ab75cd08721da3a938b8d2b10096d70caryclark@google.com if (outCount == 0 || !approximately_negative(end - outsideTs[outCount - 2])) { 388718063441c23b334ab2ee7075c39ceeb8378e6fcfcaryclark@google.com *outsideTs.append() = end; 388818063441c23b334ab2ee7075c39ceeb8378e6fcfcaryclark@google.com *outsideTs.append() = start; 388918063441c23b334ab2ee7075c39ceeb8378e6fcfcaryclark@google.com } 389018063441c23b334ab2ee7075c39ceeb8378e6fcfcaryclark@google.com } 3891c7b4be7f110bc7b487c3c3f28d82877584e74c2fskia.committer@gmail.com 389224bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com void undoneSpan(int& start, int& end) { 389324bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com size_t tCount = fTs.count(); 389424bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com size_t index; 389524bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com for (index = 0; index < tCount; ++index) { 389624bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com if (!fTs[index].fDone) { 389724bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com break; 389824bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com } 389924bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com } 390024bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com SkASSERT(index < tCount - 1); 390124bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com start = index; 390224bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com double startT = fTs[index].fT; 39033350c3c68ab75cd08721da3a938b8d2b10096d70caryclark@google.com while (approximately_negative(fTs[++index].fT - startT)) 390424bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com SkASSERT(index < tCount); 390524bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com SkASSERT(index < tCount); 390624bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com end = index; 390724bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com } 390818063441c23b334ab2ee7075c39ceeb8378e6fcfcaryclark@google.com 3909fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com bool unsortable(int index) const { 3910fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com return fTs[index].fUnsortableStart || fTs[index].fUnsortableEnd; 3911fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com } 3912fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com 3913b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com void updatePts(const SkPoint pts[]) { 3914b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com fPts = pts; 3915b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com } 3916a833b5c40d0516237e0889fce8af44880423fc20caryclark@google.com 39177fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com int updateOppWinding(int index, int endIndex) const { 39187fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com int lesser = SkMin32(index, endIndex); 39197fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com int oppWinding = oppSum(lesser); 39207fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com int oppSpanWinding = oppSign(index, endIndex); 39215e0500fb5f17fe14db42fc3e0aad08e6b41ccc5fcaryclark@google.com if (oppSpanWinding && useInnerWinding(oppWinding - oppSpanWinding, oppWinding) 39225e0500fb5f17fe14db42fc3e0aad08e6b41ccc5fcaryclark@google.com && oppWinding != SK_MaxS32) { 39237fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com oppWinding -= oppSpanWinding; 39247fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com } 39257fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com return oppWinding; 39267fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com } 3927c3d7d90973528527131c72549b10c2a21300e0acskia.committer@gmail.com 39287fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com int updateOppWinding(const Angle* angle) const { 39297fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com int startIndex = angle->start(); 39307fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com int endIndex = angle->end(); 39317fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com return updateOppWinding(endIndex, startIndex); 39327fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com } 39337fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com 39347fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com int updateOppWindingReverse(const Angle* angle) const { 39357fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com int startIndex = angle->start(); 39367fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com int endIndex = angle->end(); 39377fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com return updateOppWinding(startIndex, endIndex); 39387fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com } 39397fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com 39407fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com int updateWinding(int index, int endIndex) const { 39417fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com int lesser = SkMin32(index, endIndex); 39427fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com int winding = windSum(lesser); 39437fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com int spanWinding = spanSign(index, endIndex); 39445e0500fb5f17fe14db42fc3e0aad08e6b41ccc5fcaryclark@google.com if (winding && useInnerWinding(winding - spanWinding, winding) && winding != SK_MaxS32) { 39457fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com winding -= spanWinding; 39467fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com } 39477fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com return winding; 39487fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com } 39497fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com 39507fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com int updateWinding(const Angle* angle) const { 39517fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com int startIndex = angle->start(); 39527fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com int endIndex = angle->end(); 39537fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com return updateWinding(endIndex, startIndex); 39547fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com } 39557fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com 39567fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com int updateWindingReverse(const Angle* angle) const { 39577fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com int startIndex = angle->start(); 39587fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com int endIndex = angle->end(); 39597fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com return updateWinding(startIndex, endIndex); 39607fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com } 39617fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com 3962fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com SkPath::Verb verb() const { 3963fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com return fVerb; 3964fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 3965b89a03c890668f98d9f8b269b6ad00824409435bskia.committer@gmail.com 39668d83d0db6433e009c6c7f9adbd2580578b6f297eskia.committer@gmail.com int windingAtT(double tHit, int tIndex, bool crossOpp, SkScalar& dx) const { 3967d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com if (approximately_zero(tHit - t(tIndex))) { // if we hit the end of a span, disregard 3968d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com return SK_MinS32; 3969d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com } 3970d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com int winding = crossOpp ? oppSum(tIndex) : windSum(tIndex); 3971d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com SkASSERT(winding != SK_MinS32); 3972d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com int windVal = crossOpp ? oppValue(tIndex) : windValue(tIndex); 39738f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com #if DEBUG_WINDING_AT_T 39748f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com SkDebugf("%s oldWinding=%d windValue=%d", __FUNCTION__, winding, windVal); 3975d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com #endif 3976d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com // see if a + change in T results in a +/- change in X (compute x'(T)) 39773586ece1ddbb48cabb2e7a4792be9ff5d74e40d9caryclark@google.com dx = (*SegmentDXAtT[fVerb])(fPts, tHit); 3978d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com if (fVerb > SkPath::kLine_Verb && approximately_zero(dx)) { 3979d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com dx = fPts[2].fX - fPts[1].fX - dx; 3980d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com } 3981db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com if (dx == 0) { 39828f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com #if DEBUG_WINDING_AT_T 39838f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com SkDebugf(" dx=0 winding=SK_MinS32\n"); 39848f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com #endif 3985db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com return SK_MinS32; 3986db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com } 3987d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com if (winding * dx > 0) { // if same signs, result is negative 3988d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com winding += dx > 0 ? -windVal : windVal; 3989d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com } 39908f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com #if DEBUG_WINDING_AT_T 39918f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com SkDebugf(" dx=%c winding=%d\n", dx > 0 ? '+' : '-', winding); 39928f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com #endif 3993d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com return winding; 3994d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com } 3995d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com 3996fa4a6e964691ff9a88bc047418abe2d4324dfcaecaryclark@google.com int windSum(int tIndex) const { 39978dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com return fTs[tIndex].fWindSum; 39988dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com } 3999d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com 4000fa4a6e964691ff9a88bc047418abe2d4324dfcaecaryclark@google.com int windSum(const Angle* angle) const { 4001495f8e435b677f28913cd2adc8caa8d3d766dd17caryclark@google.com int start = angle->start(); 4002495f8e435b677f28913cd2adc8caa8d3d766dd17caryclark@google.com int end = angle->end(); 4003495f8e435b677f28913cd2adc8caa8d3d766dd17caryclark@google.com int index = SkMin32(start, end); 4004fa4a6e964691ff9a88bc047418abe2d4324dfcaecaryclark@google.com return windSum(index); 40058dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com } 40068dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com 40078dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com int windValue(int tIndex) const { 40088dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com return fTs[tIndex].fWindValue; 40098dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com } 4010d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com 40118dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com int windValue(const Angle* angle) const { 40128dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com int start = angle->start(); 40138dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com int end = angle->end(); 40148dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com int index = SkMin32(start, end); 40158dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com return windValue(index); 40168dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com } 4017453995e01d884d62ce2e808e0067e494c0c9c7faskia.committer@gmail.com 40188f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com int windValueAt(double t) const { 40198f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com int count = fTs.count(); 40208f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com for (int index = 0; index < count; ++index) { 40218f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com if (fTs[index].fT == t) { 40228f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com return fTs[index].fWindValue; 40238f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com } 40248f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com } 40258f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com SkASSERT(0); 40268f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com return 0; 40278f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com } 40288f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com 40293586ece1ddbb48cabb2e7a4792be9ff5d74e40d9caryclark@google.com SkScalar xAtT(int index) const { 40303586ece1ddbb48cabb2e7a4792be9ff5d74e40d9caryclark@google.com return xAtT(&fTs[index]); 40313586ece1ddbb48cabb2e7a4792be9ff5d74e40d9caryclark@google.com } 40323586ece1ddbb48cabb2e7a4792be9ff5d74e40d9caryclark@google.com 40338dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com SkScalar xAtT(const Span* span) const { 40348dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com return xyAtT(span).fX; 4035495f8e435b677f28913cd2adc8caa8d3d766dd17caryclark@google.com } 4036055c7c299cb47eebd360b809ad58a0006e2e55f7skia.committer@gmail.com 40378dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com const SkPoint& xyAtT(int index) const { 40388dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com return xyAtT(&fTs[index]); 4039fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 4040fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 4041a3f05facab01712a1b58e60a70b0dbdb90a39830caryclark@google.com const SkPoint& xyAtT(const Span* span) const { 404227c449af06cd1d05db441593d08b84f3530fba52caryclark@google.com if (SkScalarIsNaN(span->fPt.fX)) { 4043c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com SkASSERT(0); // make sure this path is never used 4044a3f05facab01712a1b58e60a70b0dbdb90a39830caryclark@google.com if (span->fT == 0) { 404527c449af06cd1d05db441593d08b84f3530fba52caryclark@google.com span->fPt = fPts[0]; 4046a3f05facab01712a1b58e60a70b0dbdb90a39830caryclark@google.com } else if (span->fT == 1) { 404727c449af06cd1d05db441593d08b84f3530fba52caryclark@google.com span->fPt = fPts[fVerb]; 4048a3f05facab01712a1b58e60a70b0dbdb90a39830caryclark@google.com } else { 404927c449af06cd1d05db441593d08b84f3530fba52caryclark@google.com (*SegmentXYAtT[fVerb])(fPts, span->fT, &span->fPt); 4050a3f05facab01712a1b58e60a70b0dbdb90a39830caryclark@google.com } 4051a3f05facab01712a1b58e60a70b0dbdb90a39830caryclark@google.com } 405227c449af06cd1d05db441593d08b84f3530fba52caryclark@google.com return span->fPt; 4053fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 4054d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com 4055db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com // used only by right angle winding finding 405610227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com void xyAtT(double mid, SkPoint& pt) const { 405710227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com (*SegmentXYAtT[fVerb])(fPts, mid, &pt); 4058db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com } 4059db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com 40608dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com SkScalar yAtT(int index) const { 40618dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com return yAtT(&fTs[index]); 40628dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com } 4063fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 40648dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com SkScalar yAtT(const Span* span) const { 40658dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com return xyAtT(span).fY; 4066a833b5c40d0516237e0889fce8af44880423fc20caryclark@google.com } 4067a833b5c40d0516237e0889fce8af44880423fc20caryclark@google.com 40684eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com void zeroCoincidentOpp(Span* oTest, int index) { 40694eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com Span* const test = &fTs[index]; 40704eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com Span* end = test; 40714eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com do { 40724eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com end->fOppValue = 0; 40734eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com end = &fTs[++index]; 40744eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com } while (approximately_negative(end->fT - test->fT)); 40754eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com } 40764eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com 40774eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com void zeroCoincidentOther(Span* test, const double tRatio, const double oEndT, int oIndex) { 40784eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com Span* const oTest = &fTs[oIndex]; 40794eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com Span* oEnd = oTest; 40804eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com const double startT = test->fT; 40814eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com const double oStartT = oTest->fT; 40824eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com double otherTMatch = (test->fT - startT) * tRatio + oStartT; 40834eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com while (!approximately_negative(oEndT - oEnd->fT) 40844eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com && approximately_negative(oEnd->fT - otherTMatch)) { 40854eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com oEnd->fOppValue = 0; 40864eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com oEnd = &fTs[++oIndex]; 4087729e1c46cea63dfaa6e4a05608b8f3be41e19dcecaryclark@google.com } 40884eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com } 40894eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com 40904eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com void zeroSpan(Span* span) { 40914eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com SkASSERT(span->fWindValue > 0 || span->fOppValue > 0); 40924eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com span->fWindValue = 0; 4093729e1c46cea63dfaa6e4a05608b8f3be41e19dcecaryclark@google.com span->fOppValue = 0; 40944eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com SkASSERT(!span->fDone); 40954eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com span->fDone = true; 40964eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com ++fDoneSpans; 40976ec1526680bcc05b8b8b2c7ad9f78ba247e123b7caryclark@google.com } 40986ec1526680bcc05b8b8b2c7ad9f78ba247e123b7caryclark@google.com 4099fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com#if DEBUG_DUMP 4100fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com void dump() const { 4101fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com const char className[] = "Segment"; 4102fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com const int tab = 4; 4103fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com for (int i = 0; i < fTs.count(); ++i) { 4104fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com SkPoint out; 4105fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com (*SegmentXYAtT[fVerb])(fPts, t(i), &out); 4106fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com SkDebugf("%*s [%d] %s.fTs[%d]=%1.9g (%1.9g,%1.9g) other=%d" 41078dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com " otherT=%1.9g windSum=%d\n", 4108fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com tab + sizeof(className), className, fID, 4109fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com kLVerbStr[fVerb], i, fTs[i].fT, out.fX, out.fY, 41108dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com fTs[i].fOther->fID, fTs[i].fOtherT, fTs[i].fWindSum); 4111fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 411215fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com SkDebugf("%*s [%d] fBounds=(l:%1.9g, t:%1.9g r:%1.9g, b:%1.9g)", 4113fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com tab + sizeof(className), className, fID, 411415fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com fBounds.fLeft, fBounds.fTop, fBounds.fRight, fBounds.fBottom); 4115fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 4116fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com#endif 4117fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 411847580694fbe974a065caf7c39c3d2075708c2018caryclark@google.com#if DEBUG_CONCIDENT 4119aa35831d1d0e4c798a63fe772430adc4f3a038cdcaryclark@google.com // SkASSERT if pair has not already been added 4120534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com void debugAddTPair(double t, const Segment& other, double otherT) const { 4121cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com for (int i = 0; i < fTs.count(); ++i) { 4122cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com if (fTs[i].fT == t && fTs[i].fOther == &other && fTs[i].fOtherT == otherT) { 4123cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com return; 4124cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com } 4125cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com } 4126cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com SkASSERT(0); 4127cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com } 4128cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com#endif 4129cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com 4130534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com#if DEBUG_DUMP 4131534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com int debugID() const { 4132534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com return fID; 4133534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com } 4134534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com#endif 4135534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com 413624bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com#if DEBUG_WINDING 413724bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com void debugShowSums() const { 413824bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com SkDebugf("%s id=%d (%1.9g,%1.9g %1.9g,%1.9g)", __FUNCTION__, fID, 413924bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com fPts[0].fX, fPts[0].fY, fPts[fVerb].fX, fPts[fVerb].fY); 414024bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com for (int i = 0; i < fTs.count(); ++i) { 414124bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com const Span& span = fTs[i]; 414224bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com SkDebugf(" [t=%1.3g %1.9g,%1.9g w=", span.fT, xAtT(&span), yAtT(&span)); 414324bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com if (span.fWindSum == SK_MinS32) { 414424bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com SkDebugf("?"); 414524bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com } else { 414624bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com SkDebugf("%d", span.fWindSum); 414724bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com } 414824bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com SkDebugf("]"); 414924bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com } 415024bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com SkDebugf("\n"); 415124bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com } 415224bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com#endif 415324bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com 4154cc90505674cd845fcbebd7e0654c3ff04a2e4f25caryclark@google.com#if DEBUG_CONCIDENT 4155534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com void debugShowTs() const { 415624bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com SkDebugf("%s id=%d", __FUNCTION__, fID); 41574eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com int lastWind = -1; 41584eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com int lastOpp = -1; 41594eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com double lastT = -1; 41604eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com int i; 41614eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com for (i = 0; i < fTs.count(); ++i) { 41624eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com bool change = lastT != fTs[i].fT || lastWind != fTs[i].fWindValue 41634eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com || lastOpp != fTs[i].fOppValue; 41644eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com if (change && lastWind >= 0) { 41654eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com SkDebugf(" t=%1.3g %1.9g,%1.9g w=%d o=%d]", 41664eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com lastT, xyAtT(i - 1).fX, xyAtT(i - 1).fY, lastWind, lastOpp); 41674eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com } 41684eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com if (change) { 41694eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com SkDebugf(" [o=%d", fTs[i].fOther->fID); 41704eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com lastWind = fTs[i].fWindValue; 41714eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com lastOpp = fTs[i].fOppValue; 41724eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com lastT = fTs[i].fT; 41734eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com } else { 41744eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com SkDebugf(",%d", fTs[i].fOther->fID); 41754eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com } 41764eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com } 41774eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com if (i <= 0) { 41784eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com return; 41794eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com } 41804eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com SkDebugf(" t=%1.3g %1.9g,%1.9g w=%d o=%d]", 41814eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com lastT, xyAtT(i - 1).fX, xyAtT(i - 1).fY, lastWind, lastOpp); 41824eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com if (fOperand) { 41834eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com SkDebugf(" operand"); 41844eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com } 41854eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com if (done()) { 41864eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com SkDebugf(" done"); 418747580694fbe974a065caf7c39c3d2075708c2018caryclark@google.com } 418847580694fbe974a065caf7c39c3d2075708c2018caryclark@google.com SkDebugf("\n"); 418947580694fbe974a065caf7c39c3d2075708c2018caryclark@google.com } 419047580694fbe974a065caf7c39c3d2075708c2018caryclark@google.com#endif 419147580694fbe974a065caf7c39c3d2075708c2018caryclark@google.com 4192027de226c144d9e6b7a76acb2e904952b5620a5ecaryclark@google.com#if DEBUG_ACTIVE_SPANS 4193534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com void debugShowActiveSpans() const { 4194027de226c144d9e6b7a76acb2e904952b5620a5ecaryclark@google.com if (done()) { 4195027de226c144d9e6b7a76acb2e904952b5620a5ecaryclark@google.com return; 4196027de226c144d9e6b7a76acb2e904952b5620a5ecaryclark@google.com } 41974eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com#if DEBUG_ACTIVE_SPANS_SHORT_FORM 41984eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com int lastId = -1; 41994eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com double lastT = -1; 42004eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com#endif 4201027de226c144d9e6b7a76acb2e904952b5620a5ecaryclark@google.com for (int i = 0; i < fTs.count(); ++i) { 42027ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com SkASSERT(&fTs[i] == &fTs[i].fOther->fTs[fTs[i].fOtherIndex].fOther-> 42037ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com fTs[fTs[i].fOther->fTs[fTs[i].fOtherIndex].fOtherIndex]); 4204027de226c144d9e6b7a76acb2e904952b5620a5ecaryclark@google.com if (fTs[i].fDone) { 4205027de226c144d9e6b7a76acb2e904952b5620a5ecaryclark@google.com continue; 4206027de226c144d9e6b7a76acb2e904952b5620a5ecaryclark@google.com } 42074eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com#if DEBUG_ACTIVE_SPANS_SHORT_FORM 42084eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com if (lastId == fID && lastT == fTs[i].fT) { 42094eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com continue; 42104eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com } 42114eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com lastId = fID; 42124eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com lastT = fTs[i].fT; 42134eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com#endif 4214534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com SkDebugf("%s id=%d", __FUNCTION__, fID); 4215027de226c144d9e6b7a76acb2e904952b5620a5ecaryclark@google.com SkDebugf(" (%1.9g,%1.9g", fPts[0].fX, fPts[0].fY); 4216027de226c144d9e6b7a76acb2e904952b5620a5ecaryclark@google.com for (int vIndex = 1; vIndex <= fVerb; ++vIndex) { 4217027de226c144d9e6b7a76acb2e904952b5620a5ecaryclark@google.com SkDebugf(" %1.9g,%1.9g", fPts[vIndex].fX, fPts[vIndex].fY); 4218027de226c144d9e6b7a76acb2e904952b5620a5ecaryclark@google.com } 4219027de226c144d9e6b7a76acb2e904952b5620a5ecaryclark@google.com const Span* span = &fTs[i]; 4220d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com SkDebugf(") t=%1.9g (%1.9g,%1.9g)", fTs[i].fT, 42210c803d048c826fadfeed51207488867e17e0cc10caryclark@google.com xAtT(span), yAtT(span)); 422247d73daa7a971e7eee5822def7922f7d43b2dc47caryclark@google.com int iEnd = i + 1; 422347d73daa7a971e7eee5822def7922f7d43b2dc47caryclark@google.com while (fTs[iEnd].fT < 1 && approximately_equal(fTs[i].fT, fTs[iEnd].fT)) { 422447d73daa7a971e7eee5822def7922f7d43b2dc47caryclark@google.com ++iEnd; 422547d73daa7a971e7eee5822def7922f7d43b2dc47caryclark@google.com } 422647d73daa7a971e7eee5822def7922f7d43b2dc47caryclark@google.com SkDebugf(" tEnd=%1.9g", fTs[iEnd].fT); 4227027de226c144d9e6b7a76acb2e904952b5620a5ecaryclark@google.com const Segment* other = fTs[i].fOther; 4228534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com SkDebugf(" other=%d otherT=%1.9g otherIndex=%d windSum=", 4229534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com other->fID, fTs[i].fOtherT, fTs[i].fOtherIndex); 4230534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com if (fTs[i].fWindSum == SK_MinS32) { 4231534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com SkDebugf("?"); 4232534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com } else { 4233534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com SkDebugf("%d", fTs[i].fWindSum); 4234534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com } 42354eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com SkDebugf(" windValue=%d oppValue=%d\n", fTs[i].fWindValue, fTs[i].fOppValue); 4236027de226c144d9e6b7a76acb2e904952b5620a5ecaryclark@google.com } 4237027de226c144d9e6b7a76acb2e904952b5620a5ecaryclark@google.com } 4238b0a327e9390da5865d4c56db5e5259adc3380d37skia.committer@gmail.com 42396aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com // This isn't useful yet -- but leaving it in for now in case i think of something 42406aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com // to use it for 42416aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com void validateActiveSpans() const { 42426aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com if (done()) { 42436aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com return; 42446aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com } 42456aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com int tCount = fTs.count(); 42466aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com for (int index = 0; index < tCount; ++index) { 42476aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com if (fTs[index].fDone) { 42486aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com continue; 42496aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com } 42506aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com // count number of connections which are not done 42516aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com int first = index; 42526aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com double baseT = fTs[index].fT; 42536aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com while (first > 0 && approximately_equal(fTs[first - 1].fT, baseT)) { 42546aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com --first; 42556aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com } 42566aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com int last = index; 42576aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com while (last < tCount - 1 && approximately_equal(fTs[last + 1].fT, baseT)) { 42586aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com ++last; 42596aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com } 42606aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com int connections = 0; 42616aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com connections += first > 0 && !fTs[first - 1].fDone; 42626aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com for (int test = first; test <= last; ++test) { 42636aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com connections += !fTs[test].fDone; 42646aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com const Segment* other = fTs[test].fOther; 42656aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com int oIndex = fTs[test].fOtherIndex; 42666aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com connections += !other->fTs[oIndex].fDone; 42676aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com connections += oIndex > 0 && !other->fTs[oIndex - 1].fDone; 42686aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com } 42696aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com // SkASSERT(!(connections & 1)); 42706aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com } 42716aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com } 4272027de226c144d9e6b7a76acb2e904952b5620a5ecaryclark@google.com#endif 4273027de226c144d9e6b7a76acb2e904952b5620a5ecaryclark@google.com 42741304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com#if DEBUG_MARK_DONE || DEBUG_UNSORTABLE 42750c803d048c826fadfeed51207488867e17e0cc10caryclark@google.com void debugShowNewWinding(const char* fun, const Span& span, int winding) { 42760c803d048c826fadfeed51207488867e17e0cc10caryclark@google.com const SkPoint& pt = xyAtT(&span); 42770c803d048c826fadfeed51207488867e17e0cc10caryclark@google.com SkDebugf("%s id=%d", fun, fID); 42780c803d048c826fadfeed51207488867e17e0cc10caryclark@google.com SkDebugf(" (%1.9g,%1.9g", fPts[0].fX, fPts[0].fY); 42790c803d048c826fadfeed51207488867e17e0cc10caryclark@google.com for (int vIndex = 1; vIndex <= fVerb; ++vIndex) { 42800c803d048c826fadfeed51207488867e17e0cc10caryclark@google.com SkDebugf(" %1.9g,%1.9g", fPts[vIndex].fX, fPts[vIndex].fY); 42810c803d048c826fadfeed51207488867e17e0cc10caryclark@google.com } 4282fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com SkASSERT(&span == &span.fOther->fTs[span.fOtherIndex].fOther-> 4283fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com fTs[span.fOther->fTs[span.fOtherIndex].fOtherIndex]); 4284d4c8e1e035bc2edb6caf2c9eac71ef918e60b80bcaryclark@google.com SkDebugf(") t=%1.9g [%d] (%1.9g,%1.9g) tEnd=%1.9g newWindSum=%d windSum=", 428564334352cc3f29f52dfa07225d65eb218d2fd830skia.committer@gmail.com span.fT, span.fOther->fTs[span.fOtherIndex].fOtherIndex, pt.fX, pt.fY, 4286d4c8e1e035bc2edb6caf2c9eac71ef918e60b80bcaryclark@google.com (&span)[1].fT, winding); 42870c803d048c826fadfeed51207488867e17e0cc10caryclark@google.com if (span.fWindSum == SK_MinS32) { 42880c803d048c826fadfeed51207488867e17e0cc10caryclark@google.com SkDebugf("?"); 42890c803d048c826fadfeed51207488867e17e0cc10caryclark@google.com } else { 42900c803d048c826fadfeed51207488867e17e0cc10caryclark@google.com SkDebugf("%d", span.fWindSum); 42910c803d048c826fadfeed51207488867e17e0cc10caryclark@google.com } 42920c803d048c826fadfeed51207488867e17e0cc10caryclark@google.com SkDebugf(" windValue=%d\n", span.fWindValue); 42930c803d048c826fadfeed51207488867e17e0cc10caryclark@google.com } 429431143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com 429531143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com void debugShowNewWinding(const char* fun, const Span& span, int winding, int oppWinding) { 429631143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com const SkPoint& pt = xyAtT(&span); 429731143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com SkDebugf("%s id=%d", fun, fID); 429831143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com SkDebugf(" (%1.9g,%1.9g", fPts[0].fX, fPts[0].fY); 429931143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com for (int vIndex = 1; vIndex <= fVerb; ++vIndex) { 430031143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com SkDebugf(" %1.9g,%1.9g", fPts[vIndex].fX, fPts[vIndex].fY); 430131143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com } 430231143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com SkASSERT(&span == &span.fOther->fTs[span.fOtherIndex].fOther-> 430331143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com fTs[span.fOther->fTs[span.fOtherIndex].fOtherIndex]); 4304d4c8e1e035bc2edb6caf2c9eac71ef918e60b80bcaryclark@google.com SkDebugf(") t=%1.9g [%d] (%1.9g,%1.9g) tEnd=%1.9g newWindSum=%d newOppSum=%d oppSum=", 430531143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com span.fT, span.fOther->fTs[span.fOtherIndex].fOtherIndex, pt.fX, pt.fY, 4306d4c8e1e035bc2edb6caf2c9eac71ef918e60b80bcaryclark@google.com (&span)[1].fT, winding, oppWinding); 430731143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com if (span.fOppSum == SK_MinS32) { 430831143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com SkDebugf("?"); 430931143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com } else { 431031143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com SkDebugf("%d", span.fOppSum); 431131143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com } 431231143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com SkDebugf(" windSum="); 431331143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com if (span.fWindSum == SK_MinS32) { 431431143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com SkDebugf("?"); 431531143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com } else { 431631143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com SkDebugf("%d", span.fWindSum); 431731143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com } 431831143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com SkDebugf(" windValue=%d\n", span.fWindValue); 431931143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com } 43200c803d048c826fadfeed51207488867e17e0cc10caryclark@google.com#endif 43210c803d048c826fadfeed51207488867e17e0cc10caryclark@google.com 43221304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com#if DEBUG_SORT || DEBUG_SWAP_TOP 432303f970652e07c6832cae41fa374cb68ca80d472ccaryclark@google.com void debugShowSort(const char* fun, const SkTDArray<Angle*>& angles, int first, 432431143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com const int contourWinding, const int oppContourWinding) const { 4325c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com if (--gDebugSortCount < 0) { 4326c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com return; 4327c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com } 4328afe56de6361a81eef537ddd8f6d5626c8546d4c7caryclark@google.com SkASSERT(angles[first]->segment() == this); 4329200c211d34b11a4a988fc2549df3c17ae6875899caryclark@google.com SkASSERT(angles.count() > 1); 4330534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com int lastSum = contourWinding; 433131143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com int oppLastSum = oppContourWinding; 433257cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com const Angle* firstAngle = angles[first]; 433357cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com int windSum = lastSum - spanSign(firstAngle); 433457cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com int oppoSign = oppSign(firstAngle); 433557cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com int oppWindSum = oppLastSum - oppoSign; 4336c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com #define WIND_AS_STRING(x) char x##Str[12]; if (!valid_wind(x)) strcpy(x##Str, "?"); \ 4337c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com else snprintf(x##Str, sizeof(x##Str), "%d", x) 4338c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com WIND_AS_STRING(contourWinding); 4339c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com WIND_AS_STRING(oppContourWinding); 4340c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com SkDebugf("%s %s contourWinding=%s oppContourWinding=%s sign=%d\n", fun, __FUNCTION__, 4341c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com contourWindingStr, oppContourWindingStr, spanSign(angles[first])); 4342afe56de6361a81eef537ddd8f6d5626c8546d4c7caryclark@google.com int index = first; 4343afe56de6361a81eef537ddd8f6d5626c8546d4c7caryclark@google.com bool firstTime = true; 434447580694fbe974a065caf7c39c3d2075708c2018caryclark@google.com do { 434547580694fbe974a065caf7c39c3d2075708c2018caryclark@google.com const Angle& angle = *angles[index]; 434647580694fbe974a065caf7c39c3d2075708c2018caryclark@google.com const Segment& segment = *angle.segment(); 434747580694fbe974a065caf7c39c3d2075708c2018caryclark@google.com int start = angle.start(); 434847580694fbe974a065caf7c39c3d2075708c2018caryclark@google.com int end = angle.end(); 434947580694fbe974a065caf7c39c3d2075708c2018caryclark@google.com const Span& sSpan = segment.fTs[start]; 435047580694fbe974a065caf7c39c3d2075708c2018caryclark@google.com const Span& eSpan = segment.fTs[end]; 435147580694fbe974a065caf7c39c3d2075708c2018caryclark@google.com const Span& mSpan = segment.fTs[SkMin32(start, end)]; 435231143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com bool opp = segment.fOperand ^ fOperand; 4353534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com if (!firstTime) { 435457cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com oppoSign = segment.oppSign(&angle); 435531143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com if (opp) { 435631143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com oppLastSum = oppWindSum; 435731143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com oppWindSum -= segment.spanSign(&angle); 435857cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com if (oppoSign) { 435957cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com lastSum = windSum; 436057cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com windSum -= oppoSign; 436157cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com } 436231143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com } else { 436331143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com lastSum = windSum; 436431143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com windSum -= segment.spanSign(&angle); 436557cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com if (oppoSign) { 436657cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com oppLastSum = oppWindSum; 436757cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com oppWindSum -= oppoSign; 436857cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com } 436931143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com } 4370afe56de6361a81eef537ddd8f6d5626c8546d4c7caryclark@google.com } 437164334352cc3f29f52dfa07225d65eb218d2fd830skia.committer@gmail.com SkDebugf("%s [%d] %s", __FUNCTION__, index, 4372d4c8e1e035bc2edb6caf2c9eac71ef918e60b80bcaryclark@google.com angle.unsortable() ? "*** UNSORTABLE *** " : ""); 4373d4c8e1e035bc2edb6caf2c9eac71ef918e60b80bcaryclark@google.com #if COMPACT_DEBUG_SORT 4374d4c8e1e035bc2edb6caf2c9eac71ef918e60b80bcaryclark@google.com SkDebugf("id=%d %s start=%d (%1.9g,%,1.9g) end=%d (%1.9g,%,1.9g)", 4375c91dfe417a51f73c28ecf2708df1e0bee942c6eacaryclark@google.com segment.fID, kLVerbStr[segment.fVerb], 4376fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com start, segment.xAtT(&sSpan), segment.yAtT(&sSpan), end, 4377d4c8e1e035bc2edb6caf2c9eac71ef918e60b80bcaryclark@google.com segment.xAtT(&eSpan), segment.yAtT(&eSpan)); 4378d4c8e1e035bc2edb6caf2c9eac71ef918e60b80bcaryclark@google.com #else 4379d4c8e1e035bc2edb6caf2c9eac71ef918e60b80bcaryclark@google.com switch (segment.fVerb) { 4380d4c8e1e035bc2edb6caf2c9eac71ef918e60b80bcaryclark@google.com case SkPath::kLine_Verb: 4381d4c8e1e035bc2edb6caf2c9eac71ef918e60b80bcaryclark@google.com SkDebugf(LINE_DEBUG_STR, LINE_DEBUG_DATA(segment.fPts)); 4382d4c8e1e035bc2edb6caf2c9eac71ef918e60b80bcaryclark@google.com break; 4383d4c8e1e035bc2edb6caf2c9eac71ef918e60b80bcaryclark@google.com case SkPath::kQuad_Verb: 4384d4c8e1e035bc2edb6caf2c9eac71ef918e60b80bcaryclark@google.com SkDebugf(QUAD_DEBUG_STR, QUAD_DEBUG_DATA(segment.fPts)); 4385d4c8e1e035bc2edb6caf2c9eac71ef918e60b80bcaryclark@google.com break; 4386d4c8e1e035bc2edb6caf2c9eac71ef918e60b80bcaryclark@google.com case SkPath::kCubic_Verb: 4387d4c8e1e035bc2edb6caf2c9eac71ef918e60b80bcaryclark@google.com SkDebugf(CUBIC_DEBUG_STR, CUBIC_DEBUG_DATA(segment.fPts)); 4388d4c8e1e035bc2edb6caf2c9eac71ef918e60b80bcaryclark@google.com break; 43891ab0aac67247bf3ec1f23b220456d316d9a80b45caryclark@google.com default: 43901ab0aac67247bf3ec1f23b220456d316d9a80b45caryclark@google.com SkASSERT(0); 4391d4c8e1e035bc2edb6caf2c9eac71ef918e60b80bcaryclark@google.com } 4392d4c8e1e035bc2edb6caf2c9eac71ef918e60b80bcaryclark@google.com SkDebugf(" tStart=%1.9g tEnd=%1.9g", sSpan.fT, eSpan.fT); 4393d4c8e1e035bc2edb6caf2c9eac71ef918e60b80bcaryclark@google.com #endif 4394d4c8e1e035bc2edb6caf2c9eac71ef918e60b80bcaryclark@google.com SkDebugf(" sign=%d windValue=%d windSum=", angle.sign(), mSpan.fWindValue); 4395c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com winding_printf(mSpan.fWindSum); 439631143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com int last, wind; 439731143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com if (opp) { 439831143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com last = oppLastSum; 439931143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com wind = oppWindSum; 440031143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com } else { 440131143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com last = lastSum; 440231143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com wind = windSum; 440331143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com } 4404c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com bool useInner = valid_wind(last) && valid_wind(wind) && useInnerWinding(last, wind); 4405c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com WIND_AS_STRING(last); 4406c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com WIND_AS_STRING(wind); 4407c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com WIND_AS_STRING(lastSum); 4408c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com WIND_AS_STRING(oppLastSum); 4409c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com WIND_AS_STRING(windSum); 4410c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com WIND_AS_STRING(oppWindSum); 4411c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com #undef WIND_AS_STRING 441257cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com if (!oppoSign) { 4413c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com SkDebugf(" %s->%s (max=%s)", lastStr, windStr, useInner ? windStr : lastStr); 441457cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com } else { 4415c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com SkDebugf(" %s->%s (%s->%s)", lastStr, windStr, opp ? lastSumStr : oppLastSumStr, 4416c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com opp ? windSumStr : oppWindSumStr); 441757cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com } 441831143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com SkDebugf(" done=%d tiny=%d opp=%d\n", mSpan.fDone, mSpan.fTiny, opp); 44196aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com#if false && DEBUG_ANGLE 4420c899ad9c7fa28234d99479ab09afb6866bbd8dc3caryclark@google.com angle.debugShow(segment.xyAtT(&sSpan)); 4421c899ad9c7fa28234d99479ab09afb6866bbd8dc3caryclark@google.com#endif 442247580694fbe974a065caf7c39c3d2075708c2018caryclark@google.com ++index; 442347580694fbe974a065caf7c39c3d2075708c2018caryclark@google.com if (index == angles.count()) { 442447580694fbe974a065caf7c39c3d2075708c2018caryclark@google.com index = 0; 442547580694fbe974a065caf7c39c3d2075708c2018caryclark@google.com } 4426534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com if (firstTime) { 4427534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com firstTime = false; 4428534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com } 442947580694fbe974a065caf7c39c3d2075708c2018caryclark@google.com } while (index != first); 443047580694fbe974a065caf7c39c3d2075708c2018caryclark@google.com } 44317fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com 44327fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com void debugShowSort(const char* fun, const SkTDArray<Angle*>& angles, int first) { 44337fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com const Angle* firstAngle = angles[first]; 44347fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com const Segment* segment = firstAngle->segment(); 44357fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com int winding = segment->updateWinding(firstAngle); 44367fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com int oppWinding = segment->updateOppWinding(firstAngle); 44377fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com debugShowSort(fun, angles, first, winding, oppWinding); 44387fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com } 44397fce0de0b9674ca6cc65ebbb40b924b615d9fc9ecaryclark@google.com 444047580694fbe974a065caf7c39c3d2075708c2018caryclark@google.com#endif 444147580694fbe974a065caf7c39c3d2075708c2018caryclark@google.com 4442534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com#if DEBUG_WINDING 44437ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com static char as_digit(int value) { 44447ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com return value < 0 ? '?' : value <= 9 ? '0' + value : '+'; 44457ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com } 4446729e1c46cea63dfaa6e4a05608b8f3be41e19dcecaryclark@google.com#endif 44477ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com 4448729e1c46cea63dfaa6e4a05608b8f3be41e19dcecaryclark@google.com#if DEBUG_SHOW_WINDING 44497ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com int debugShowWindingValues(int slotCount, int ofInterest) const { 44507ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com if (!(1 << fID & ofInterest)) { 44517ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com return 0; 44527ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com } 44537ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com int sum = 0; 44547ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com SkTDArray<char> slots; 44557ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com slots.setCount(slotCount * 2); 44567ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com memset(slots.begin(), ' ', slotCount * 2); 44577ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com for (int i = 0; i < fTs.count(); ++i) { 44587ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com // if (!(1 << fTs[i].fOther->fID & ofInterest)) { 44597ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com // continue; 44607ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com // } 44617ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com sum += fTs[i].fWindValue; 44627ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com slots[fTs[i].fOther->fID - 1] = as_digit(fTs[i].fWindValue); 44637ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com sum += fTs[i].fOppValue; 44647ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com slots[slotCount + fTs[i].fOther->fID - 1] = as_digit(fTs[i].fOppValue); 44657ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com } 44667ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com SkDebugf("%s id=%2d %.*s | %.*s\n", __FUNCTION__, fID, slotCount, slots.begin(), slotCount, 44677ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com slots.begin() + slotCount); 44687ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com return sum; 44697ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com } 4470729e1c46cea63dfaa6e4a05608b8f3be41e19dcecaryclark@google.com#endif 44717ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com 4472fa0588ff672564af1c235a63589573829035a60bcaryclark@google.comprivate: 4473fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com const SkPoint* fPts; 4474fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com Bounds fBounds; 447515fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com SkTDArray<Span> fTs; // two or more (always includes t=0 t=1) 44764eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com // OPTIMIZATION: could pack donespans, verb, operand, xor into 1 int-sized value 447724bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com int fDoneSpans; // quick check that segment is finished 44784eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com // OPTIMIZATION: force the following to be byte-sized 44794eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com SkPath::Verb fVerb; 4480235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com bool fOperand; 44814eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com bool fXor; // set if original contour had even-odd fill 44824eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com bool fOppXor; // set if opposite operand had even-odd fill 4483fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com#if DEBUG_DUMP 4484fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com int fID; 4485fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com#endif 4486fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com}; 4487fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 4488b973801328ef25105f7f3255ab912a1b675da056caryclark@google.comclass Contour; 4489b973801328ef25105f7f3255ab912a1b675da056caryclark@google.com 44908dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.comstruct Coincidence { 4491b973801328ef25105f7f3255ab912a1b675da056caryclark@google.com Contour* fContours[2]; 4492b973801328ef25105f7f3255ab912a1b675da056caryclark@google.com int fSegments[2]; 44938dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com double fTs[2][2]; 449445a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com SkPoint fPts[2]; 44958dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com}; 44968dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com 4497fa0588ff672564af1c235a63589573829035a60bcaryclark@google.comclass Contour { 4498fa0588ff672564af1c235a63589573829035a60bcaryclark@google.compublic: 4499fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com Contour() { 4500fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com reset(); 4501fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com#if DEBUG_DUMP 4502fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com fID = ++gContourID; 4503fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com#endif 4504fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 4505fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 4506fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com bool operator<(const Contour& rh) const { 4507fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com return fBounds.fTop == rh.fBounds.fTop 4508fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com ? fBounds.fLeft < rh.fBounds.fLeft 4509fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com : fBounds.fTop < rh.fBounds.fTop; 4510fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 4511fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 45128dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com void addCoincident(int index, Contour* other, int otherIndex, 45138dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com const Intersections& ts, bool swap) { 45148dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com Coincidence& coincidence = *fCoincidences.append(); 451557cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com coincidence.fContours[0] = this; // FIXME: no need to store 4516b973801328ef25105f7f3255ab912a1b675da056caryclark@google.com coincidence.fContours[1] = other; 4517b973801328ef25105f7f3255ab912a1b675da056caryclark@google.com coincidence.fSegments[0] = index; 4518b973801328ef25105f7f3255ab912a1b675da056caryclark@google.com coincidence.fSegments[1] = otherIndex; 451945a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com coincidence.fTs[swap][0] = ts.fT[0][0]; 452045a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com coincidence.fTs[swap][1] = ts.fT[0][1]; 452145a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com coincidence.fTs[!swap][0] = ts.fT[1][0]; 452245a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com coincidence.fTs[!swap][1] = ts.fT[1][1]; 452345a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com coincidence.fPts[0] = ts.fPt[0].asSkPoint(); 452445a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com coincidence.fPts[1] = ts.fPt[1].asSkPoint(); 45258dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com } 45268dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com 45278dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com void addCross(const Contour* crosser) { 45288dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com#ifdef DEBUG_CROSS 45298dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com for (int index = 0; index < fCrosses.count(); ++index) { 45308dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com SkASSERT(fCrosses[index] != crosser); 45318dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com } 45328dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com#endif 45338dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com *fCrosses.append() = crosser; 45348dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com } 45358dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com 4536fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com void addCubic(const SkPoint pts[4]) { 45374eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com fSegments.push_back().addCubic(pts, fOperand, fXor); 4538c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com fContainsCurves = fContainsCubics = true; 4539fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 4540a833b5c40d0516237e0889fce8af44880423fc20caryclark@google.com 4541b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com int addLine(const SkPoint pts[2]) { 45424eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com fSegments.push_back().addLine(pts, fOperand, fXor); 4543b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com return fSegments.count(); 4544fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 4545d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com 45468dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com void addOtherT(int segIndex, int tIndex, double otherT, int otherIndex) { 45478dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com fSegments[segIndex].addOtherT(tIndex, otherT, otherIndex); 45488dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com } 4549a833b5c40d0516237e0889fce8af44880423fc20caryclark@google.com 4550b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com int addQuad(const SkPoint pts[3]) { 45514eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com fSegments.push_back().addQuad(pts, fOperand, fXor); 4552fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com fContainsCurves = true; 4553b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com return fSegments.count(); 4554fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 4555a833b5c40d0516237e0889fce8af44880423fc20caryclark@google.com 45567ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com int addT(int segIndex, Contour* other, int otherIndex, const SkPoint& pt, double& newT) { 4557c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com setContainsIntercepts(); 45587ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com return fSegments[segIndex].addT(&other->fSegments[otherIndex], pt, newT); 45598dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com } 45608dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com 45614aaaaeace7e617ddc473645756fb7c20790bc270caryclark@google.com int addSelfT(int segIndex, Contour* other, int otherIndex, const SkPoint& pt, double& newT) { 45624aaaaeace7e617ddc473645756fb7c20790bc270caryclark@google.com setContainsIntercepts(); 45634aaaaeace7e617ddc473645756fb7c20790bc270caryclark@google.com return fSegments[segIndex].addSelfT(&other->fSegments[otherIndex], pt, newT); 45644aaaaeace7e617ddc473645756fb7c20790bc270caryclark@google.com } 45654aaaaeace7e617ddc473645756fb7c20790bc270caryclark@google.com 45667ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com int addUnsortableT(int segIndex, Contour* other, int otherIndex, bool start, 45677ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com const SkPoint& pt, double& newT) { 45687ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com return fSegments[segIndex].addUnsortableT(&other->fSegments[otherIndex], start, pt, newT); 456973ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com } 457073ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com 4571a833b5c40d0516237e0889fce8af44880423fc20caryclark@google.com const Bounds& bounds() const { 4572fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com return fBounds; 4573fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 4574d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com 4575fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com void complete() { 4576fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com setBounds(); 4577fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com fContainsIntercepts = false; 4578fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 457958433de8627c54ac2d68c65d248d67f48a79179dskia.committer@gmail.com 4580c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com bool containsCubics() const { 4581c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com return fContainsCubics; 4582fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 4583a833b5c40d0516237e0889fce8af44880423fc20caryclark@google.com 45848dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com bool crosses(const Contour* crosser) const { 45858dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com for (int index = 0; index < fCrosses.count(); ++index) { 45868dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com if (fCrosses[index] == crosser) { 45878dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com return true; 45888dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com } 45898dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com } 45908dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com return false; 45918dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com } 4592549c93ef979aeb4dcb65b3d0fca4b58e8ab62227skia.committer@gmail.com 4593db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com bool done() const { 4594db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com return fDone; 4595db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com } 4596db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com 4597f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com const SkPoint& end() const { 4598f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com const Segment& segment = fSegments.back(); 4599f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com return segment.pts()[segment.verb()]; 4600f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com } 46018dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com 46024eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com void findTooCloseToCall() { 4603a833b5c40d0516237e0889fce8af44880423fc20caryclark@google.com int segmentCount = fSegments.count(); 4604a833b5c40d0516237e0889fce8af44880423fc20caryclark@google.com for (int sIndex = 0; sIndex < segmentCount; ++sIndex) { 46054eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com fSegments[sIndex].findTooCloseToCall(); 4606a833b5c40d0516237e0889fce8af44880423fc20caryclark@google.com } 4607a833b5c40d0516237e0889fce8af44880423fc20caryclark@google.com } 4608a833b5c40d0516237e0889fce8af44880423fc20caryclark@google.com 4609b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com void fixOtherTIndex() { 4610b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com int segmentCount = fSegments.count(); 4611b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com for (int sIndex = 0; sIndex < segmentCount; ++sIndex) { 4612b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com fSegments[sIndex].fixOtherTIndex(); 4613b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com } 4614b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com } 4615453995e01d884d62ce2e808e0067e494c0c9c7faskia.committer@gmail.com 4616db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com Segment* nonVerticalSegment(int& start, int& end) { 4617db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com int segmentCount = fSortedSegments.count(); 4618db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com SkASSERT(segmentCount > 0); 4619db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com for (int sortedIndex = fFirstSorted; sortedIndex < segmentCount; ++sortedIndex) { 4620db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com Segment* testSegment = fSortedSegments[sortedIndex]; 4621db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com if (testSegment->done()) { 4622db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com continue; 4623db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com } 4624db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com start = end = 0; 4625db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com while (testSegment->nextCandidate(start, end)) { 4626db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com if (!testSegment->isVertical(start, end)) { 4627db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com return testSegment; 4628db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com } 4629db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com } 4630db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com } 4631db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com return NULL; 4632db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com } 4633db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com 463431143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com bool operand() const { 463531143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com return fOperand; 463631143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com } 4637b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com 4638fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com void reset() { 4639fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com fSegments.reset(); 4640fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com fBounds.set(SK_ScalarMax, SK_ScalarMax, SK_ScalarMax, SK_ScalarMax); 4641c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com fContainsCurves = fContainsCubics = fContainsIntercepts = fDone = false; 4642fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 4643b973801328ef25105f7f3255ab912a1b675da056caryclark@google.com 46447ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com void resolveCoincidence(SkTDArray<Contour*>& contourList) { 46458dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com int count = fCoincidences.count(); 46468dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com for (int index = 0; index < count; ++index) { 46478dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com Coincidence& coincidence = fCoincidences[index]; 46484eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com SkASSERT(coincidence.fContours[0] == this); 4649b973801328ef25105f7f3255ab912a1b675da056caryclark@google.com int thisIndex = coincidence.fSegments[0]; 46504eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com Segment& thisOne = fSegments[thisIndex]; 46514eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com Contour* otherContour = coincidence.fContours[1]; 4652b973801328ef25105f7f3255ab912a1b675da056caryclark@google.com int otherIndex = coincidence.fSegments[1]; 4653b973801328ef25105f7f3255ab912a1b675da056caryclark@google.com Segment& other = otherContour->fSegments[otherIndex]; 46540d3d09e5d2fd17aaed035ae23d59804b56b994ffcaryclark@google.com if ((thisOne.done() || other.done()) && thisOne.complete() && other.complete()) { 46554eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com continue; 46564eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com } 465747580694fbe974a065caf7c39c3d2075708c2018caryclark@google.com #if DEBUG_CONCIDENT 465847580694fbe974a065caf7c39c3d2075708c2018caryclark@google.com thisOne.debugShowTs(); 465947580694fbe974a065caf7c39c3d2075708c2018caryclark@google.com other.debugShowTs(); 466047580694fbe974a065caf7c39c3d2075708c2018caryclark@google.com #endif 46618dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com double startT = coincidence.fTs[0][0]; 46628dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com double endT = coincidence.fTs[0][1]; 466357cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com bool cancelers = false; 46648dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com if (startT > endT) { 46658dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com SkTSwap<double>(startT, endT); 466657cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com cancelers ^= true; // FIXME: just assign true 46678dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com } 46683350c3c68ab75cd08721da3a938b8d2b10096d70caryclark@google.com SkASSERT(!approximately_negative(endT - startT)); 46698dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com double oStartT = coincidence.fTs[1][0]; 46708dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com double oEndT = coincidence.fTs[1][1]; 46718dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com if (oStartT > oEndT) { 46728dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com SkTSwap<double>(oStartT, oEndT); 467357cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com cancelers ^= true; 46748dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com } 46753350c3c68ab75cd08721da3a938b8d2b10096d70caryclark@google.com SkASSERT(!approximately_negative(oEndT - oStartT)); 46764eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com bool opp = fOperand ^ otherContour->fOperand; 467757cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com if (cancelers && !opp) { 467857cff8dbdfb32b3fea426519a4fdc05f13be69d9caryclark@google.com // make sure startT and endT have t entries 46792ddff9388694263c7be9347de7eb768cd0847997caryclark@google.com if (startT > 0 || oEndT < 1 46802ddff9388694263c7be9347de7eb768cd0847997caryclark@google.com || thisOne.isMissing(startT) || other.isMissing(oEndT)) { 468145a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com thisOne.addTPair(startT, other, oEndT, true, coincidence.fPts[0]); 4682b973801328ef25105f7f3255ab912a1b675da056caryclark@google.com } 46832ddff9388694263c7be9347de7eb768cd0847997caryclark@google.com if (oStartT > 0 || endT < 1 46842ddff9388694263c7be9347de7eb768cd0847997caryclark@google.com || thisOne.isMissing(endT) || other.isMissing(oStartT)) { 468545a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com other.addTPair(oStartT, thisOne, endT, true, coincidence.fPts[1]); 4686b973801328ef25105f7f3255ab912a1b675da056caryclark@google.com } 46870d3d09e5d2fd17aaed035ae23d59804b56b994ffcaryclark@google.com if (!thisOne.done() && !other.done()) { 46880d3d09e5d2fd17aaed035ae23d59804b56b994ffcaryclark@google.com thisOne.addTCancel(startT, endT, other, oStartT, oEndT); 46890d3d09e5d2fd17aaed035ae23d59804b56b994ffcaryclark@google.com } 46908dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com } else { 4691200c211d34b11a4a988fc2549df3c17ae6875899caryclark@google.com if (startT > 0 || oStartT > 0 4692200c211d34b11a4a988fc2549df3c17ae6875899caryclark@google.com || thisOne.isMissing(startT) || other.isMissing(oStartT)) { 469345a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com thisOne.addTPair(startT, other, oStartT, true, coincidence.fPts[0]); 4694b973801328ef25105f7f3255ab912a1b675da056caryclark@google.com } 4695200c211d34b11a4a988fc2549df3c17ae6875899caryclark@google.com if (endT < 1 || oEndT < 1 4696200c211d34b11a4a988fc2549df3c17ae6875899caryclark@google.com || thisOne.isMissing(endT) || other.isMissing(oEndT)) { 469745a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com other.addTPair(oEndT, thisOne, endT, true, coincidence.fPts[1]); 4698b973801328ef25105f7f3255ab912a1b675da056caryclark@google.com } 46990d3d09e5d2fd17aaed035ae23d59804b56b994ffcaryclark@google.com if (!thisOne.done() && !other.done()) { 47000d3d09e5d2fd17aaed035ae23d59804b56b994ffcaryclark@google.com thisOne.addTCoincident(startT, endT, other, oStartT, oEndT); 47010d3d09e5d2fd17aaed035ae23d59804b56b994ffcaryclark@google.com } 47028dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com } 470347580694fbe974a065caf7c39c3d2075708c2018caryclark@google.com #if DEBUG_CONCIDENT 470447580694fbe974a065caf7c39c3d2075708c2018caryclark@google.com thisOne.debugShowTs(); 470547580694fbe974a065caf7c39c3d2075708c2018caryclark@google.com other.debugShowTs(); 470647580694fbe974a065caf7c39c3d2075708c2018caryclark@google.com #endif 4707729e1c46cea63dfaa6e4a05608b8f3be41e19dcecaryclark@google.com #if DEBUG_SHOW_WINDING 47087ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com debugShowWindingValues(contourList); 47097ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com #endif 47108dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com } 47118dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com } 4712d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com 47138f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com // first pass, add missing T values 47148f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com // second pass, determine winding values of overlaps 47158f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com void addCoincidentPoints() { 47168f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com int count = fCoincidences.count(); 47178f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com for (int index = 0; index < count; ++index) { 47188f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com Coincidence& coincidence = fCoincidences[index]; 47198f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com SkASSERT(coincidence.fContours[0] == this); 47208f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com int thisIndex = coincidence.fSegments[0]; 47218f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com Segment& thisOne = fSegments[thisIndex]; 47228f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com Contour* otherContour = coincidence.fContours[1]; 47238f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com int otherIndex = coincidence.fSegments[1]; 47248f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com Segment& other = otherContour->fSegments[otherIndex]; 47258f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com if ((thisOne.done() || other.done()) && thisOne.complete() && other.complete()) { 47268f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com // OPTIMIZATION: remove from array 47278f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com continue; 47288f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com } 47298f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com #if DEBUG_CONCIDENT 47308f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com thisOne.debugShowTs(); 47318f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com other.debugShowTs(); 47328f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com #endif 47338f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com double startT = coincidence.fTs[0][0]; 47348f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com double endT = coincidence.fTs[0][1]; 47358f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com bool cancelers; 47368f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com if ((cancelers = startT > endT)) { 47377ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com SkTSwap(startT, endT); 47387ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com SkTSwap(coincidence.fPts[0], coincidence.fPts[1]); 47398f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com } 47408f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com SkASSERT(!approximately_negative(endT - startT)); 47418f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com double oStartT = coincidence.fTs[1][0]; 47428f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com double oEndT = coincidence.fTs[1][1]; 47438f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com if (oStartT > oEndT) { 47448f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com SkTSwap<double>(oStartT, oEndT); 47458f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com cancelers ^= true; 47468f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com } 47478f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com SkASSERT(!approximately_negative(oEndT - oStartT)); 47488f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com bool opp = fOperand ^ otherContour->fOperand; 47498f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com if (cancelers && !opp) { 47508f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com // make sure startT and endT have t entries 47518f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com if (startT > 0 || oEndT < 1 47528f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com || thisOne.isMissing(startT) || other.isMissing(oEndT)) { 475345a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com thisOne.addTPair(startT, other, oEndT, true, coincidence.fPts[0]); 47548f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com } 47558f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com if (oStartT > 0 || endT < 1 47568f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com || thisOne.isMissing(endT) || other.isMissing(oStartT)) { 475745a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com other.addTPair(oStartT, thisOne, endT, true, coincidence.fPts[1]); 47588f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com } 47598f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com } else { 47608f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com if (startT > 0 || oStartT > 0 47618f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com || thisOne.isMissing(startT) || other.isMissing(oStartT)) { 476245a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com thisOne.addTPair(startT, other, oStartT, true, coincidence.fPts[0]); 47638f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com } 47648f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com if (endT < 1 || oEndT < 1 47658f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com || thisOne.isMissing(endT) || other.isMissing(oEndT)) { 476645a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com other.addTPair(oEndT, thisOne, endT, true, coincidence.fPts[1]); 47678f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com } 47688f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com } 47698f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com #if DEBUG_CONCIDENT 47708f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com thisOne.debugShowTs(); 47718f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com other.debugShowTs(); 47728f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com #endif 47738f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com } 47748f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com } 4775d9f65e3df45c9b4994c70f6bf13d29985afd2f65skia.committer@gmail.com 47768f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com void calcCoincidentWinding() { 47778f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com int count = fCoincidences.count(); 47788f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com for (int index = 0; index < count; ++index) { 47798f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com Coincidence& coincidence = fCoincidences[index]; 47808f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com SkASSERT(coincidence.fContours[0] == this); 47818f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com int thisIndex = coincidence.fSegments[0]; 47828f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com Segment& thisOne = fSegments[thisIndex]; 47838f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com if (thisOne.done()) { 47848f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com continue; 47858f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com } 47868f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com Contour* otherContour = coincidence.fContours[1]; 47878f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com int otherIndex = coincidence.fSegments[1]; 47888f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com Segment& other = otherContour->fSegments[otherIndex]; 47898f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com if (other.done()) { 47908f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com continue; 47918f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com } 47928f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com double startT = coincidence.fTs[0][0]; 47938f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com double endT = coincidence.fTs[0][1]; 47948f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com bool cancelers; 47958f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com if ((cancelers = startT > endT)) { 47968f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com SkTSwap<double>(startT, endT); 47978f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com } 47988f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com SkASSERT(!approximately_negative(endT - startT)); 47998f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com double oStartT = coincidence.fTs[1][0]; 48008f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com double oEndT = coincidence.fTs[1][1]; 48018f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com if (oStartT > oEndT) { 48028f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com SkTSwap<double>(oStartT, oEndT); 48038f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com cancelers ^= true; 48048f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com } 48058f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com SkASSERT(!approximately_negative(oEndT - oStartT)); 48068f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com bool opp = fOperand ^ otherContour->fOperand; 48078f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com if (cancelers && !opp) { 48088f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com // make sure startT and endT have t entries 48098f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com if (!thisOne.done() && !other.done()) { 48108f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com thisOne.addTCancel(startT, endT, other, oStartT, oEndT); 48118f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com } 48128f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com } else { 48138f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com if (!thisOne.done() && !other.done()) { 48148f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com thisOne.addTCoincident(startT, endT, other, oStartT, oEndT); 48158f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com } 48168f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com } 48178f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com #if DEBUG_CONCIDENT 48188f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com thisOne.debugShowTs(); 48198f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com other.debugShowTs(); 48208f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com #endif 48218f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com } 48228f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com } 48238f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com 4824db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com SkTArray<Segment>& segments() { 48258dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com return fSegments; 48268dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com } 4827d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com 4828c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com void setContainsIntercepts() { 4829c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com fContainsIntercepts = true; 4830c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com } 4831c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com 4832235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com void setOperand(bool isOp) { 4833235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com fOperand = isOp; 4834235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com } 4835c7b4be7f110bc7b487c3c3f28d82877584e74c2fskia.committer@gmail.com 48364eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com void setOppXor(bool isOppXor) { 48374eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com fOppXor = isOppXor; 48384eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com int segmentCount = fSegments.count(); 48394eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com for (int test = 0; test < segmentCount; ++test) { 48404eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com fSegments[test].setOppXor(isOppXor); 48414eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com } 48424eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com } 4843055c7c299cb47eebd360b809ad58a0006e2e55f7skia.committer@gmail.com 4844235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com void setXor(bool isXor) { 4845235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com fXor = isXor; 4846235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com } 4847235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com 4848fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com void sortSegments() { 4849fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com int segmentCount = fSegments.count(); 4850fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com fSortedSegments.setReserve(segmentCount); 4851fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com for (int test = 0; test < segmentCount; ++test) { 4852fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com *fSortedSegments.append() = &fSegments[test]; 4853fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com } 4854fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com QSort<Segment>(fSortedSegments.begin(), fSortedSegments.end() - 1); 4855fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com fFirstSorted = 0; 4856fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com } 4857fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com 4858f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com const SkPoint& start() const { 4859f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com return fSegments.front().pts()[0]; 4860f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com } 4861f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com 4862f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com void toPath(PathWrapper& path) const { 4863f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com int segmentCount = fSegments.count(); 4864f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com const SkPoint& pt = fSegments.front().pts()[0]; 4865f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com path.deferredMove(pt); 4866f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com for (int test = 0; test < segmentCount; ++test) { 4867f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com fSegments[test].addCurveTo(0, 1, path, true); 4868f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com } 4869f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com path.close(); 4870f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com } 4871549c93ef979aeb4dcb65b3d0fca4b58e8ab62227skia.committer@gmail.com 4872f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com void toPartialBackward(PathWrapper& path) const { 4873f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com int segmentCount = fSegments.count(); 4874f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com for (int test = segmentCount - 1; test >= 0; --test) { 4875f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com fSegments[test].addCurveTo(1, 0, path, true); 4876f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com } 4877f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com } 4878f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com 4879f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com void toPartialForward(PathWrapper& path) const { 4880f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com int segmentCount = fSegments.count(); 4881f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com for (int test = 0; test < segmentCount; ++test) { 4882f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com fSegments[test].addCurveTo(0, 1, path, true); 4883f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com } 4884f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com } 4885f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com 4886db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com void topSortableSegment(const SkPoint& topLeft, SkPoint& bestXY, Segment*& topStart) { 4887fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com int segmentCount = fSortedSegments.count(); 4888fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com SkASSERT(segmentCount > 0); 4889f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com int sortedIndex = fFirstSorted; 4890db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com fDone = true; // may be cleared below 4891f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com for ( ; sortedIndex < segmentCount; ++sortedIndex) { 4892f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com Segment* testSegment = fSortedSegments[sortedIndex]; 4893fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com if (testSegment->done()) { 4894f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com if (sortedIndex == fFirstSorted) { 4895f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com ++fFirstSorted; 4896f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com } 4897f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com continue; 4898f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com } 4899db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com fDone = false; 490045a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com SkPoint testXY = testSegment->activeLeftTop(true, NULL); 4901db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com if (topStart) { 4902db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com if (testXY.fY < topLeft.fY) { 4903db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com continue; 4904db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com } 4905db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com if (testXY.fY == topLeft.fY && testXY.fX < topLeft.fX) { 4906db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com continue; 4907db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com } 4908db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com if (bestXY.fY < testXY.fY) { 4909db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com continue; 4910db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com } 4911db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com if (bestXY.fY == testXY.fY && bestXY.fX < testXY.fX) { 4912db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com continue; 4913db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com } 4914fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com } 4915db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com topStart = testSegment; 4916f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com bestXY = testXY; 4917fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com } 4918fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com } 4919fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com 492024bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com Segment* undoneSegment(int& start, int& end) { 492124bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com int segmentCount = fSegments.count(); 492224bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com for (int test = 0; test < segmentCount; ++test) { 492324bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com Segment* testSegment = &fSegments[test]; 492424bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com if (testSegment->done()) { 492524bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com continue; 492624bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com } 492724bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com testSegment->undoneSpan(start, end); 492824bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com return testSegment; 492924bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com } 493024bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com return NULL; 493124bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com } 493224bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com 49338dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com int updateSegment(int index, const SkPoint* pts) { 49348dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com Segment& segment = fSegments[index]; 49358dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com segment.updatePts(pts); 49368dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com return segment.verb() + 1; 49378dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com } 49388dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com 49398dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com#if DEBUG_TEST 49408dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com SkTArray<Segment>& debugSegments() { 49418dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com return fSegments; 49428dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com } 49438dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com#endif 49448dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com 4945fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com#if DEBUG_DUMP 4946fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com void dump() { 4947fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com int i; 4948fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com const char className[] = "Contour"; 4949fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com const int tab = 4; 4950fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com SkDebugf("%s %p (contour=%d)\n", className, this, fID); 4951fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com for (i = 0; i < fSegments.count(); ++i) { 4952fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com SkDebugf("%*s.fSegments[%d]:\n", tab + sizeof(className), 4953fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com className, i); 4954fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com fSegments[i].dump(); 4955fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 4956fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com SkDebugf("%*s.fBounds=(l:%1.9g, t:%1.9g r:%1.9g, b:%1.9g)\n", 4957fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com tab + sizeof(className), className, 4958fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com fBounds.fLeft, fBounds.fTop, 4959fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com fBounds.fRight, fBounds.fBottom); 4960fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com SkDebugf("%*s.fContainsIntercepts=%d\n", tab + sizeof(className), 4961fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com className, fContainsIntercepts); 4962fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com SkDebugf("%*s.fContainsCurves=%d\n", tab + sizeof(className), 4963fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com className, fContainsCurves); 4964fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 4965fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com#endif 4966fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 4967027de226c144d9e6b7a76acb2e904952b5620a5ecaryclark@google.com#if DEBUG_ACTIVE_SPANS 4968027de226c144d9e6b7a76acb2e904952b5620a5ecaryclark@google.com void debugShowActiveSpans() { 4969027de226c144d9e6b7a76acb2e904952b5620a5ecaryclark@google.com for (int index = 0; index < fSegments.count(); ++index) { 4970534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com fSegments[index].debugShowActiveSpans(); 4971027de226c144d9e6b7a76acb2e904952b5620a5ecaryclark@google.com } 4972027de226c144d9e6b7a76acb2e904952b5620a5ecaryclark@google.com } 49736aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com 49746aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com void validateActiveSpans() { 49756aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com for (int index = 0; index < fSegments.count(); ++index) { 49766aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com fSegments[index].validateActiveSpans(); 49776aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com } 49786aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com } 4979027de226c144d9e6b7a76acb2e904952b5620a5ecaryclark@google.com#endif 4980027de226c144d9e6b7a76acb2e904952b5620a5ecaryclark@google.com 4981729e1c46cea63dfaa6e4a05608b8f3be41e19dcecaryclark@google.com#if DEBUG_SHOW_WINDING 49827ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com int debugShowWindingValues(int totalSegments, int ofInterest) { 49837ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com int count = fSegments.count(); 49847ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com int sum = 0; 49857ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com for (int index = 0; index < count; ++index) { 49867ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com sum += fSegments[index].debugShowWindingValues(totalSegments, ofInterest); 49877ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com } 49887ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com // SkDebugf("%s sum=%d\n", __FUNCTION__, sum); 49897ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com return sum; 49907ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com } 49917ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com 49927ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com static void debugShowWindingValues(SkTDArray<Contour*>& contourList) { 49937ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com // int ofInterest = 1 << 1 | 1 << 5 | 1 << 9 | 1 << 13; 49947ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com // int ofInterest = 1 << 4 | 1 << 8 | 1 << 12 | 1 << 16; 49957ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com int ofInterest = 1 << 5 | 1 << 8; 49967ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com int total = 0; 49977ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com int index; 49987ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com for (index = 0; index < contourList.count(); ++index) { 49997ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com total += contourList[index]->segments().count(); 50007ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com } 50017ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com int sum = 0; 50027ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com for (index = 0; index < contourList.count(); ++index) { 50037ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com sum += contourList[index]->debugShowWindingValues(total, ofInterest); 50047ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com } 50057ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com // SkDebugf("%s total=%d\n", __FUNCTION__, sum); 50067ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com } 50077ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com#endif 50087ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com 5009fa0588ff672564af1c235a63589573829035a60bcaryclark@google.comprotected: 5010fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com void setBounds() { 5011fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com int count = fSegments.count(); 5012fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com if (count == 0) { 5013fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com SkDebugf("%s empty contour\n", __FUNCTION__); 5014fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com SkASSERT(0); 5015fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com // FIXME: delete empty contour? 5016fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com return; 5017fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 5018fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com fBounds = fSegments.front().bounds(); 5019fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com for (int index = 1; index < count; ++index) { 50208dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com fBounds.add(fSegments[index].bounds()); 5021fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 5022fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 5023a833b5c40d0516237e0889fce8af44880423fc20caryclark@google.com 5024fa0588ff672564af1c235a63589573829035a60bcaryclark@google.comprivate: 50258dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com SkTArray<Segment> fSegments; 5026fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com SkTDArray<Segment*> fSortedSegments; 5027fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com int fFirstSorted; 50288dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com SkTDArray<Coincidence> fCoincidences; 50298dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com SkTDArray<const Contour*> fCrosses; 5030fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com Bounds fBounds; 5031c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com bool fContainsIntercepts; // FIXME: is this used by anybody? 5032c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com bool fContainsCubics; 5033fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com bool fContainsCurves; 5034db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com bool fDone; 5035235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com bool fOperand; // true for the second argument to a binary operator 5036235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com bool fXor; 50374eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com bool fOppXor; 5038fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com#if DEBUG_DUMP 5039fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com int fID; 5040fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com#endif 5041fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com}; 5042fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 5043fa0588ff672564af1c235a63589573829035a60bcaryclark@google.comclass EdgeBuilder { 5044fa0588ff672564af1c235a63589573829035a60bcaryclark@google.compublic: 5045fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 5046f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.comEdgeBuilder(const PathWrapper& path, SkTArray<Contour>& contours) 5047f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com : fPath(path.nativePath()) 5048f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com , fContours(contours) 5049f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com{ 5050f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com init(); 5051f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com} 5052f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com 5053a833b5c40d0516237e0889fce8af44880423fc20caryclark@google.comEdgeBuilder(const SkPath& path, SkTArray<Contour>& contours) 5054235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com : fPath(&path) 5055fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com , fContours(contours) 5056fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com{ 5057f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com init(); 5058f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com} 5059f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com 5060f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.comvoid init() { 5061f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com fCurrentContour = NULL; 5062f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com fOperand = false; 5063729e1c46cea63dfaa6e4a05608b8f3be41e19dcecaryclark@google.com fXorMask[0] = fXorMask[1] = (fPath->getFillType() & 1) ? kEvenOdd_Mask : kWinding_Mask; 5064fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com#if DEBUG_DUMP 5065fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com gContourID = 0; 5066fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com gSegmentID = 0; 5067fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com#endif 5068235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com fSecondHalf = preFetch(); 5069235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com} 5070235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com 5071235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.comvoid addOperand(const SkPath& path) { 507231143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com SkASSERT(fPathVerbs.count() > 0 && fPathVerbs.end()[-1] == SkPath::kDone_Verb); 507331143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com fPathVerbs.pop(); 5074235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com fPath = &path; 5075729e1c46cea63dfaa6e4a05608b8f3be41e19dcecaryclark@google.com fXorMask[1] = (fPath->getFillType() & 1) ? kEvenOdd_Mask : kWinding_Mask; 5076235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com preFetch(); 5077235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com} 5078235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com 5079235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.comvoid finish() { 5080fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com walk(); 5081235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com complete(); 5082235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com if (fCurrentContour && !fCurrentContour->segments().count()) { 5083235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com fContours.pop_back(); 5084235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com } 5085235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com // correct pointers in contours since fReducePts may have moved as it grew 5086235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com int cIndex = 0; 5087235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com int extraCount = fExtra.count(); 5088235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com SkASSERT(extraCount == 0 || fExtra[0] == -1); 5089235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com int eIndex = 0; 5090235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com int rIndex = 0; 5091235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com while (++eIndex < extraCount) { 5092235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com int offset = fExtra[eIndex]; 5093235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com if (offset < 0) { 5094235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com ++cIndex; 5095235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com continue; 5096235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com } 5097235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com fCurrentContour = &fContours[cIndex]; 5098235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com rIndex += fCurrentContour->updateSegment(offset - 1, 5099235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com &fReducePts[rIndex]); 5100235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com } 5101235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com fExtra.reset(); // we're done with this 5102235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com} 5103235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com 5104235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.comShapeOpMask xorMask() const { 5105729e1c46cea63dfaa6e4a05608b8f3be41e19dcecaryclark@google.com return fXorMask[fOperand]; 5106fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com} 5107fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 5108fa0588ff672564af1c235a63589573829035a60bcaryclark@google.comprotected: 5109fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 5110fa0588ff672564af1c235a63589573829035a60bcaryclark@google.comvoid complete() { 51118dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com if (fCurrentContour && fCurrentContour->segments().count()) { 5112fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com fCurrentContour->complete(); 5113fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com fCurrentContour = NULL; 5114fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 5115fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com} 5116fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 5117235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com// FIXME:remove once we can access path pts directly 5118235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.comint preFetch() { 5119235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com SkPath::RawIter iter(*fPath); // FIXME: access path directly when allowed 5120fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com SkPoint pts[4]; 5121fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com SkPath::Verb verb; 5122fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com do { 5123fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com verb = iter.next(pts); 5124fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com *fPathVerbs.append() = verb; 5125fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com if (verb == SkPath::kMove_Verb) { 5126fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com *fPathPts.append() = pts[0]; 5127fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } else if (verb >= SkPath::kLine_Verb && verb <= SkPath::kCubic_Verb) { 5128fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com fPathPts.append(verb, &pts[1]); 5129fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 5130fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } while (verb != SkPath::kDone_Verb); 513131143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com return fPathVerbs.count() - 1; 5132235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com} 5133a833b5c40d0516237e0889fce8af44880423fc20caryclark@google.com 5134235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.comvoid walk() { 5135fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com SkPath::Verb reducedVerb; 5136fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com uint8_t* verbPtr = fPathVerbs.begin(); 5137235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com uint8_t* endOfFirstHalf = &verbPtr[fSecondHalf]; 5138fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com const SkPoint* pointsPtr = fPathPts.begin(); 5139b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com const SkPoint* finalCurveStart = NULL; 5140b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com const SkPoint* finalCurveEnd = NULL; 5141235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com SkPath::Verb verb; 5142fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com while ((verb = (SkPath::Verb) *verbPtr++) != SkPath::kDone_Verb) { 5143fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com switch (verb) { 5144fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com case SkPath::kMove_Verb: 5145fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com complete(); 5146b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com if (!fCurrentContour) { 5147b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com fCurrentContour = fContours.push_back_n(1); 5148235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com fCurrentContour->setOperand(fOperand); 5149729e1c46cea63dfaa6e4a05608b8f3be41e19dcecaryclark@google.com fCurrentContour->setXor(fXorMask[fOperand] == kEvenOdd_Mask); 5150b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com *fExtra.append() = -1; // start new contour 5151b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com } 515259823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com finalCurveEnd = pointsPtr++; 515331143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com goto nextVerb; 5154fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com case SkPath::kLine_Verb: 5155fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com // skip degenerate points 5156fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com if (pointsPtr[-1].fX != pointsPtr[0].fX 5157fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com || pointsPtr[-1].fY != pointsPtr[0].fY) { 5158fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com fCurrentContour->addLine(&pointsPtr[-1]); 5159fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 5160fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com break; 5161fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com case SkPath::kQuad_Verb: 5162d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com 5163fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com reducedVerb = QuadReduceOrder(&pointsPtr[-1], fReducePts); 5164fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com if (reducedVerb == 0) { 5165fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com break; // skip degenerate points 5166fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 5167fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com if (reducedVerb == 1) { 5168d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com *fExtra.append() = 5169b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com fCurrentContour->addLine(fReducePts.end() - 2); 5170fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com break; 5171fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 5172fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com fCurrentContour->addQuad(&pointsPtr[-1]); 5173fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com break; 5174fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com case SkPath::kCubic_Verb: 5175fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com reducedVerb = CubicReduceOrder(&pointsPtr[-1], fReducePts); 5176fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com if (reducedVerb == 0) { 5177fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com break; // skip degenerate points 5178fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 5179fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com if (reducedVerb == 1) { 5180b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com *fExtra.append() = 5181b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com fCurrentContour->addLine(fReducePts.end() - 2); 5182fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com break; 5183fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 5184fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com if (reducedVerb == 2) { 5185b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com *fExtra.append() = 5186b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com fCurrentContour->addQuad(fReducePts.end() - 3); 5187fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com break; 5188fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 5189fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com fCurrentContour->addCubic(&pointsPtr[-1]); 5190fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com break; 5191fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com case SkPath::kClose_Verb: 5192fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com SkASSERT(fCurrentContour); 5193b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com if (finalCurveStart && finalCurveEnd 5194b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com && *finalCurveStart != *finalCurveEnd) { 5195b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com *fReducePts.append() = *finalCurveStart; 5196b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com *fReducePts.append() = *finalCurveEnd; 5197b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com *fExtra.append() = 5198b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com fCurrentContour->addLine(fReducePts.end() - 2); 5199b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com } 5200fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com complete(); 520131143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com goto nextVerb; 5202fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com default: 5203fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com SkDEBUGFAIL("bad verb"); 5204fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com return; 5205fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 5206b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com finalCurveStart = &pointsPtr[verb - 1]; 5207fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com pointsPtr += verb; 5208fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com SkASSERT(fCurrentContour); 520931143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com nextVerb: 5210235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com if (verbPtr == endOfFirstHalf) { 5211235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com fOperand = true; 5212055c7c299cb47eebd360b809ad58a0006e2e55f7skia.committer@gmail.com } 5213fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 5214fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com} 5215fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 5216fa0588ff672564af1c235a63589573829035a60bcaryclark@google.comprivate: 5217235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com const SkPath* fPath; 5218fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com SkTDArray<SkPoint> fPathPts; // FIXME: point directly to path pts instead 5219a833b5c40d0516237e0889fce8af44880423fc20caryclark@google.com SkTDArray<uint8_t> fPathVerbs; // FIXME: remove 5220fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com Contour* fCurrentContour; 5221fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com SkTArray<Contour>& fContours; 5222fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com SkTDArray<SkPoint> fReducePts; // segments created on the fly 5223b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com SkTDArray<int> fExtra; // -1 marks new contour, > 0 offsets into contour 5224729e1c46cea63dfaa6e4a05608b8f3be41e19dcecaryclark@google.com ShapeOpMask fXorMask[2]; 5225235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com int fSecondHalf; 5226235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com bool fOperand; 5227fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com}; 5228fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 5229fa0588ff672564af1c235a63589573829035a60bcaryclark@google.comclass Work { 5230fa0588ff672564af1c235a63589573829035a60bcaryclark@google.compublic: 5231fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com enum SegmentType { 5232fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com kHorizontalLine_Segment = -1, 5233fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com kVerticalLine_Segment = 0, 5234fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com kLine_Segment = SkPath::kLine_Verb, 5235fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com kQuad_Segment = SkPath::kQuad_Verb, 5236fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com kCubic_Segment = SkPath::kCubic_Verb, 5237fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com }; 5238d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com 52398dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com void addCoincident(Work& other, const Intersections& ts, bool swap) { 52408dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com fContour->addCoincident(fIndex, other.fContour, other.fIndex, ts, swap); 52418dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com } 5242a833b5c40d0516237e0889fce8af44880423fc20caryclark@google.com 5243b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com // FIXME: does it make sense to write otherIndex now if we're going to 5244b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com // fix it up later? 5245b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com void addOtherT(int index, double otherT, int otherIndex) { 52468dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com fContour->addOtherT(fIndex, index, otherT, otherIndex); 5247fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 5248a833b5c40d0516237e0889fce8af44880423fc20caryclark@google.com 5249fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com // Avoid collapsing t values that are close to the same since 5250fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com // we walk ts to describe consecutive intersections. Since a pair of ts can 5251fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com // be nearly equal, any problems caused by this should be taken care 5252fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com // of later. 5253fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com // On the edge or out of range values are negative; add 2 to get end 52547ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com int addT(const Work& other, const SkPoint& pt, double& newT) { 52557ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com return fContour->addT(fIndex, other.fContour, other.fIndex, pt, newT); 5256fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 5257631cdcb4a6b926b6447f328b81911a4499fb3698skia.committer@gmail.com 52584aaaaeace7e617ddc473645756fb7c20790bc270caryclark@google.com int addSelfT(const Work& other, const SkPoint& pt, double& newT) { 52594aaaaeace7e617ddc473645756fb7c20790bc270caryclark@google.com return fContour->addSelfT(fIndex, other.fContour, other.fIndex, pt, newT); 52604aaaaeace7e617ddc473645756fb7c20790bc270caryclark@google.com } 5261a833b5c40d0516237e0889fce8af44880423fc20caryclark@google.com 52627ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com int addUnsortableT(const Work& other, bool start, const SkPoint& pt, double& newT) { 52637ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com return fContour->addUnsortableT(fIndex, other.fContour, other.fIndex, start, pt, newT); 526473ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com } 526573ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com 5266fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com bool advance() { 5267fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com return ++fIndex < fLast; 5268fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 5269a833b5c40d0516237e0889fce8af44880423fc20caryclark@google.com 5270fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com SkScalar bottom() const { 5271fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com return bounds().fBottom; 5272fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 5273a833b5c40d0516237e0889fce8af44880423fc20caryclark@google.com 5274fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com const Bounds& bounds() const { 52758dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com return fContour->segments()[fIndex].bounds(); 5276fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 5277d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com 527873ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com#if !APPROXIMATE_CUBICS 5279fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com const SkPoint* cubic() const { 5280fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com return fCubic; 5281fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 528273ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com#endif 5283fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 5284fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com void init(Contour* contour) { 5285fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com fContour = contour; 5286fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com fIndex = 0; 52878dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com fLast = contour->segments().count(); 5288fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 5289d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com 529066ca2fba44fe04f3382a3e22096fe73b60ce19d7caryclark@google.com bool isAdjacent(const Work& next) { 529166ca2fba44fe04f3382a3e22096fe73b60ce19d7caryclark@google.com return fContour == next.fContour && fIndex + 1 == next.fIndex; 529266ca2fba44fe04f3382a3e22096fe73b60ce19d7caryclark@google.com } 529366ca2fba44fe04f3382a3e22096fe73b60ce19d7caryclark@google.com 529466ca2fba44fe04f3382a3e22096fe73b60ce19d7caryclark@google.com bool isFirstLast(const Work& next) { 529566ca2fba44fe04f3382a3e22096fe73b60ce19d7caryclark@google.com return fContour == next.fContour && fIndex == 0 529666ca2fba44fe04f3382a3e22096fe73b60ce19d7caryclark@google.com && next.fIndex == fLast - 1; 529766ca2fba44fe04f3382a3e22096fe73b60ce19d7caryclark@google.com } 5298fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 5299fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com SkScalar left() const { 5300fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com return bounds().fLeft; 5301fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 5302a833b5c40d0516237e0889fce8af44880423fc20caryclark@google.com 530373ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com#if !APPROXIMATE_CUBICS 5304fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com void promoteToCubic() { 5305fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com fCubic[0] = pts()[0]; 5306fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com fCubic[2] = pts()[1]; 5307fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com fCubic[3] = pts()[2]; 5308fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com fCubic[1].fX = (fCubic[0].fX + fCubic[2].fX * 2) / 3; 5309fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com fCubic[1].fY = (fCubic[0].fY + fCubic[2].fY * 2) / 3; 5310fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com fCubic[2].fX = (fCubic[3].fX + fCubic[2].fX * 2) / 3; 5311fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com fCubic[2].fY = (fCubic[3].fY + fCubic[2].fY * 2) / 3; 5312fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 531373ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com#endif 5314a833b5c40d0516237e0889fce8af44880423fc20caryclark@google.com 5315fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com const SkPoint* pts() const { 53168dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com return fContour->segments()[fIndex].pts(); 5317fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 5318fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 5319fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com SkScalar right() const { 5320fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com return bounds().fRight; 5321fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 5322a833b5c40d0516237e0889fce8af44880423fc20caryclark@google.com 5323fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com ptrdiff_t segmentIndex() const { 5324fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com return fIndex; 5325fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 5326a833b5c40d0516237e0889fce8af44880423fc20caryclark@google.com 5327fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com SegmentType segmentType() const { 53288dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com const Segment& segment = fContour->segments()[fIndex]; 5329fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com SegmentType type = (SegmentType) segment.verb(); 5330fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com if (type != kLine_Segment) { 5331fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com return type; 5332fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 5333fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com if (segment.isHorizontal()) { 5334fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com return kHorizontalLine_Segment; 5335fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 5336fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com if (segment.isVertical()) { 5337fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com return kVerticalLine_Segment; 5338fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 5339fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com return kLine_Segment; 5340fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 5341a833b5c40d0516237e0889fce8af44880423fc20caryclark@google.com 5342fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com bool startAfter(const Work& after) { 5343fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com fIndex = after.fIndex; 5344fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com return advance(); 5345fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 5346fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 5347fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com SkScalar top() const { 5348fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com return bounds().fTop; 5349fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 5350a833b5c40d0516237e0889fce8af44880423fc20caryclark@google.com 5351fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com SkPath::Verb verb() const { 53528dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com return fContour->segments()[fIndex].verb(); 5353fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 5354a833b5c40d0516237e0889fce8af44880423fc20caryclark@google.com 5355fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com SkScalar x() const { 5356fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com return bounds().fLeft; 5357fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 5358fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 5359fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com bool xFlipped() const { 5360fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com return x() != pts()[0].fX; 5361fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 5362fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 5363fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com SkScalar y() const { 5364fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com return bounds().fTop; 5365fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 5366fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 5367fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com bool yFlipped() const { 53688dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com return y() != pts()[0].fY; 5369fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 5370fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 5371fa0588ff672564af1c235a63589573829035a60bcaryclark@google.comprotected: 5372fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com Contour* fContour; 537373ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com#if !APPROXIMATE_CUBICS 5374fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com SkPoint fCubic[4]; 537573ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com#endif 5376fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com int fIndex; 5377fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com int fLast; 5378fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com}; 5379fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 538065f9f0a1664a9cb38157ccfbcc3e0e936af0a58ecaryclark@google.com#if DEBUG_ADD_INTERSECTING_TS 5381c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com 538245a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.comstatic void debugShowLineIntersection(int pts, const Work& wt, const Work& wn, 538345a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com const Intersections& i) { 538445a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com SkASSERT(i.used() == pts); 5385fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com if (!pts) { 5386c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com SkDebugf("%s no intersect " LINE_DEBUG_STR " " LINE_DEBUG_STR "\n", 5387c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com __FUNCTION__, LINE_DEBUG_DATA(wt.pts()), LINE_DEBUG_DATA(wn.pts())); 5388fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com return; 5389fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 5390c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com SkDebugf("%s " T_DEBUG_STR(wtTs, 0) " " LINE_DEBUG_STR " " PT_DEBUG_STR, __FUNCTION__, 5391c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com i.fT[0][0], LINE_DEBUG_DATA(wt.pts()), PT_DEBUG_DATA(i, 0)); 5392fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com if (pts == 2) { 5393c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com SkDebugf(" " T_DEBUG_STR(wtTs, 1) " " PT_DEBUG_STR, i.fT[0][1], PT_DEBUG_DATA(i, 1)); 5394fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 5395c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com SkDebugf(" wnTs[0]=%g " LINE_DEBUG_STR, i.fT[1][0], LINE_DEBUG_DATA(wn.pts())); 5396fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com if (pts == 2) { 5397c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com SkDebugf(" " T_DEBUG_STR(wnTs, 1), i.fT[1][1]); 5398a461ff0866526bc51dbd4c4f9f066a727ec21510caryclark@google.com } 5399a461ff0866526bc51dbd4c4f9f066a727ec21510caryclark@google.com SkDebugf("\n"); 5400a461ff0866526bc51dbd4c4f9f066a727ec21510caryclark@google.com} 5401a461ff0866526bc51dbd4c4f9f066a727ec21510caryclark@google.com 5402fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.comstatic void debugShowQuadLineIntersection(int pts, const Work& wt, 540345a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com const Work& wn, const Intersections& i) { 540445a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com SkASSERT(i.used() == pts); 5405fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com if (!pts) { 5406c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com SkDebugf("%s no intersect " QUAD_DEBUG_STR " " LINE_DEBUG_STR "\n", 5407c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com __FUNCTION__, QUAD_DEBUG_DATA(wt.pts()), LINE_DEBUG_DATA(wn.pts())); 5408fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com return; 5409fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com } 5410c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com SkDebugf("%s " T_DEBUG_STR(wtTs, 0) " " QUAD_DEBUG_STR " " PT_DEBUG_STR, __FUNCTION__, 5411c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com i.fT[0][0], QUAD_DEBUG_DATA(wt.pts()), PT_DEBUG_DATA(i, 0)); 5412c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com for (int n = 1; n < pts; ++n) { 5413c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com SkDebugf(" " TX_DEBUG_STR(wtTs) " " PT_DEBUG_STR, n, i.fT[0][n], PT_DEBUG_DATA(i, n)); 5414fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com } 5415c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com SkDebugf(" wnTs[0]=%g " LINE_DEBUG_STR, i.fT[1][0], LINE_DEBUG_DATA(wn.pts())); 5416c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com for (int n = 1; n < pts; ++n) { 5417c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com SkDebugf(" " TX_DEBUG_STR(wnTs), n, i.fT[1][n]); 5418fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com } 5419fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com SkDebugf("\n"); 5420fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com} 5421fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com 5422a461ff0866526bc51dbd4c4f9f066a727ec21510caryclark@google.comstatic void debugShowQuadIntersection(int pts, const Work& wt, 542345a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com const Work& wn, const Intersections& i) { 542445a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com SkASSERT(i.used() == pts); 5425a461ff0866526bc51dbd4c4f9f066a727ec21510caryclark@google.com if (!pts) { 5426c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com SkDebugf("%s no intersect " QUAD_DEBUG_STR " " QUAD_DEBUG_STR "\n", 5427c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com __FUNCTION__, QUAD_DEBUG_DATA(wt.pts()), QUAD_DEBUG_DATA(wn.pts())); 5428a461ff0866526bc51dbd4c4f9f066a727ec21510caryclark@google.com return; 5429a461ff0866526bc51dbd4c4f9f066a727ec21510caryclark@google.com } 5430c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com SkDebugf("%s " T_DEBUG_STR(wtTs, 0) " " QUAD_DEBUG_STR " " PT_DEBUG_STR, __FUNCTION__, 5431c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com i.fT[0][0], QUAD_DEBUG_DATA(wt.pts()), PT_DEBUG_DATA(i, 0)); 5432c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com for (int n = 1; n < pts; ++n) { 5433c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com SkDebugf(" " TX_DEBUG_STR(wtTs) " " PT_DEBUG_STR, n, i.fT[0][n], PT_DEBUG_DATA(i, n)); 5434a461ff0866526bc51dbd4c4f9f066a727ec21510caryclark@google.com } 5435c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com SkDebugf(" wnTs[0]=%g " QUAD_DEBUG_STR, i.fT[1][0], QUAD_DEBUG_DATA(wn.pts())); 5436c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com for (int n = 1; n < pts; ++n) { 5437c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com SkDebugf(" " TX_DEBUG_STR(wnTs), n, i.fT[1][n]); 5438fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 5439b973801328ef25105f7f3255ab912a1b675da056caryclark@google.com SkDebugf("\n"); 5440b973801328ef25105f7f3255ab912a1b675da056caryclark@google.com} 544173ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com 544273ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.comstatic void debugShowCubicLineIntersection(int pts, const Work& wt, 544345a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com const Work& wn, const Intersections& i) { 544445a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com SkASSERT(i.used() == pts); 544573ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com if (!pts) { 5446c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com SkDebugf("%s no intersect " CUBIC_DEBUG_STR " " LINE_DEBUG_STR "\n", 5447c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com __FUNCTION__, CUBIC_DEBUG_DATA(wt.pts()), LINE_DEBUG_DATA(wn.pts())); 544873ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com return; 544973ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com } 5450c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com SkDebugf("%s " T_DEBUG_STR(wtTs, 0) " " CUBIC_DEBUG_STR " " PT_DEBUG_STR, __FUNCTION__, 5451c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com i.fT[0][0], CUBIC_DEBUG_DATA(wt.pts()), PT_DEBUG_DATA(i, 0)); 5452c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com for (int n = 1; n < pts; ++n) { 5453c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com SkDebugf(" " TX_DEBUG_STR(wtTs) " " PT_DEBUG_STR, n, i.fT[0][n], PT_DEBUG_DATA(i, n)); 545473ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com } 5455c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com SkDebugf(" wnTs[0]=%g " LINE_DEBUG_STR, i.fT[1][0], LINE_DEBUG_DATA(wn.pts())); 5456c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com for (int n = 1; n < pts; ++n) { 5457c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com SkDebugf(" " TX_DEBUG_STR(wnTs), n, i.fT[1][n]); 545873ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com } 545973ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com SkDebugf("\n"); 546073ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com} 546173ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com 546273ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.comstatic void debugShowCubicQuadIntersection(int pts, const Work& wt, 546345a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com const Work& wn, const Intersections& i) { 546445a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com SkASSERT(i.used() == pts); 546573ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com if (!pts) { 5466c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com SkDebugf("%s no intersect " CUBIC_DEBUG_STR " " QUAD_DEBUG_STR "\n", 5467c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com __FUNCTION__, CUBIC_DEBUG_DATA(wt.pts()), QUAD_DEBUG_DATA(wn.pts())); 546873ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com return; 546973ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com } 5470c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com SkDebugf("%s " T_DEBUG_STR(wtTs, 0) " " CUBIC_DEBUG_STR " " PT_DEBUG_STR, __FUNCTION__, 5471c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com i.fT[0][0], CUBIC_DEBUG_DATA(wt.pts()), PT_DEBUG_DATA(i, 0)); 5472c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com for (int n = 1; n < pts; ++n) { 5473c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com SkDebugf(" " TX_DEBUG_STR(wtTs) " " PT_DEBUG_STR, n, i.fT[0][n], PT_DEBUG_DATA(i, n)); 5474c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com } 5475c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com SkDebugf(" wnTs[0]=%g " QUAD_DEBUG_STR, i.fT[1][0], QUAD_DEBUG_DATA(wn.pts())); 5476c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com for (int n = 1; n < pts; ++n) { 5477c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com SkDebugf(" " TX_DEBUG_STR(wnTs), n, i.fT[1][n]); 547873ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com } 547973ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com SkDebugf("\n"); 548073ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com} 548173ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com 548273ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.comstatic void debugShowCubicIntersection(int pts, const Work& wt, 548345a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com const Work& wn, const Intersections& i) { 548445a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com SkASSERT(i.used() == pts); 548573ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com if (!pts) { 5486c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com SkDebugf("%s no intersect " CUBIC_DEBUG_STR " " CUBIC_DEBUG_STR "\n", 5487c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com __FUNCTION__, CUBIC_DEBUG_DATA(wt.pts()), CUBIC_DEBUG_DATA(wn.pts())); 548873ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com return; 548973ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com } 5490c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com SkDebugf("%s " T_DEBUG_STR(wtTs, 0) " " CUBIC_DEBUG_STR " " PT_DEBUG_STR, __FUNCTION__, 5491c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com i.fT[0][0], CUBIC_DEBUG_DATA(wt.pts()), PT_DEBUG_DATA(i, 0)); 5492c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com for (int n = 1; n < pts; ++n) { 5493c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com SkDebugf(" " TX_DEBUG_STR(wtTs) " " PT_DEBUG_STR, n, i.fT[0][n], PT_DEBUG_DATA(i, n)); 5494c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com } 5495c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com SkDebugf(" wnTs[0]=%g " CUBIC_DEBUG_STR, i.fT[1][0], CUBIC_DEBUG_DATA(wn.pts())); 5496c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com for (int n = 1; n < pts; ++n) { 5497c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com SkDebugf(" " TX_DEBUG_STR(wnTs), n, i.fT[1][n]); 5498c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com } 5499c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com SkDebugf("\n"); 5500c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com} 5501c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com 5502c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.comstatic void debugShowCubicIntersection(int pts, const Work& wt, const Intersections& i) { 5503c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com SkASSERT(i.used() == pts); 5504c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com if (!pts) { 5505c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com SkDebugf("%s no self intersect " CUBIC_DEBUG_STR "\n", __FUNCTION__, 5506c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com CUBIC_DEBUG_DATA(wt.pts())); 5507c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com return; 550873ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com } 5509c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com SkDebugf("%s " T_DEBUG_STR(wtTs, 0) " " CUBIC_DEBUG_STR " " PT_DEBUG_STR, __FUNCTION__, 5510c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com i.fT[0][0], CUBIC_DEBUG_DATA(wt.pts()), PT_DEBUG_DATA(i, 0)); 5511c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com SkDebugf(" " T_DEBUG_STR(wtTs, 1), i.fT[1][0]); 551273ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com SkDebugf("\n"); 551373ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com} 551485ec74ca543b13739db1ad55dedd7bdfae4ab1a6caryclark@google.com 551565f9f0a1664a9cb38157ccfbcc3e0e936af0a58ecaryclark@google.com#else 551645a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.comstatic void debugShowLineIntersection(int , const Work& , const Work& , const Intersections& ) { 5517fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com} 5518a461ff0866526bc51dbd4c4f9f066a727ec21510caryclark@google.com 551945a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.comstatic void debugShowQuadLineIntersection(int , const Work& , const Work& , const Intersections& ) { 5520fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com} 5521fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com 552245a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.comstatic void debugShowQuadIntersection(int , const Work& , const Work& , const Intersections& ) { 5523a461ff0866526bc51dbd4c4f9f066a727ec21510caryclark@google.com} 552473ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com 552545a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.comstatic void debugShowCubicLineIntersection(int , const Work& , const Work& , 552645a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com const Intersections& ) { 552773ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com} 552873ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com 552945a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.comstatic void debugShowCubicQuadIntersection(int , const Work& , const Work& , 553045a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com const Intersections& ) { 553173ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com} 553273ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com 553345a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.comstatic void debugShowCubicIntersection(int , const Work& , const Work& , const Intersections& ) { 553473ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com} 5535c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com 5536c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.comstatic void debugShowCubicIntersection(int , const Work& , const Intersections& ) { 5537c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com} 553873ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com#endif 5539fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 554065f9f0a1664a9cb38157ccfbcc3e0e936af0a58ecaryclark@google.comstatic bool addIntersectTs(Contour* test, Contour* next) { 5541b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com 5542fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com if (test != next) { 5543fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com if (test->bounds().fBottom < next->bounds().fTop) { 5544fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com return false; 5545fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 5546fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com if (!Bounds::Intersects(test->bounds(), next->bounds())) { 5547fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com return true; 5548fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 5549fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 5550b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com Work wt; 5551fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com wt.init(test); 55528dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com bool foundCommonContour = test == next; 5553fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com do { 5554b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com Work wn; 5555b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com wn.init(next); 5556fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com if (test == next && !wn.startAfter(wt)) { 5557fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com continue; 5558fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 5559fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com do { 5560fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com if (!Bounds::Intersects(wt.bounds(), wn.bounds())) { 5561fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com continue; 5562fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 5563fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com int pts; 5564fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com Intersections ts; 5565fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com bool swap = false; 5566fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com switch (wt.segmentType()) { 5567fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com case Work::kHorizontalLine_Segment: 5568fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com swap = true; 5569fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com switch (wn.segmentType()) { 5570fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com case Work::kHorizontalLine_Segment: 5571fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com case Work::kVerticalLine_Segment: 5572fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com case Work::kLine_Segment: { 5573fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com pts = HLineIntersect(wn.pts(), wt.left(), 5574fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com wt.right(), wt.y(), wt.xFlipped(), ts); 557545a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com debugShowLineIntersection(pts, wt, wn, ts); 5576fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com break; 5577fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 5578fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com case Work::kQuad_Segment: { 5579fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com pts = HQuadIntersect(wn.pts(), wt.left(), 5580fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com wt.right(), wt.y(), wt.xFlipped(), ts); 5581fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com break; 5582fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 5583fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com case Work::kCubic_Segment: { 5584fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com pts = HCubicIntersect(wn.pts(), wt.left(), 5585fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com wt.right(), wt.y(), wt.xFlipped(), ts); 558645a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com debugShowCubicLineIntersection(pts, wn, wt, ts); 5587fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com break; 5588fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 5589fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com default: 5590fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com SkASSERT(0); 5591fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 5592fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com break; 5593fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com case Work::kVerticalLine_Segment: 5594fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com swap = true; 5595fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com switch (wn.segmentType()) { 5596fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com case Work::kHorizontalLine_Segment: 5597fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com case Work::kVerticalLine_Segment: 5598fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com case Work::kLine_Segment: { 5599fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com pts = VLineIntersect(wn.pts(), wt.top(), 5600fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com wt.bottom(), wt.x(), wt.yFlipped(), ts); 560145a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com debugShowLineIntersection(pts, wt, wn, ts); 5602fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com break; 5603fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 5604fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com case Work::kQuad_Segment: { 5605fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com pts = VQuadIntersect(wn.pts(), wt.top(), 5606fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com wt.bottom(), wt.x(), wt.yFlipped(), ts); 5607fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com break; 5608fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 5609fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com case Work::kCubic_Segment: { 5610fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com pts = VCubicIntersect(wn.pts(), wt.top(), 5611fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com wt.bottom(), wt.x(), wt.yFlipped(), ts); 561245a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com debugShowCubicLineIntersection(pts, wn, wt, ts); 5613fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com break; 5614fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 5615fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com default: 5616fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com SkASSERT(0); 5617fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 5618fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com break; 5619fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com case Work::kLine_Segment: 5620fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com switch (wn.segmentType()) { 5621fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com case Work::kHorizontalLine_Segment: 5622fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com pts = HLineIntersect(wt.pts(), wn.left(), 5623fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com wn.right(), wn.y(), wn.xFlipped(), ts); 562445a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com debugShowLineIntersection(pts, wt, wn, ts); 5625fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com break; 5626fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com case Work::kVerticalLine_Segment: 5627fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com pts = VLineIntersect(wt.pts(), wn.top(), 5628fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com wn.bottom(), wn.x(), wn.yFlipped(), ts); 562945a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com debugShowLineIntersection(pts, wt, wn, ts); 5630fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com break; 5631fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com case Work::kLine_Segment: { 5632fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com pts = LineIntersect(wt.pts(), wn.pts(), ts); 563345a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com debugShowLineIntersection(pts, wt, wn, ts); 5634fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com break; 5635fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 5636fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com case Work::kQuad_Segment: { 5637fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com swap = true; 5638fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com pts = QuadLineIntersect(wn.pts(), wt.pts(), ts); 563945a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com debugShowQuadLineIntersection(pts, wn, wt, ts); 5640fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com break; 5641fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 5642fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com case Work::kCubic_Segment: { 5643fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com swap = true; 5644fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com pts = CubicLineIntersect(wn.pts(), wt.pts(), ts); 564545a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com debugShowCubicLineIntersection(pts, wn, wt, ts); 5646fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com break; 5647fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 5648fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com default: 5649fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com SkASSERT(0); 5650fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 5651fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com break; 5652fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com case Work::kQuad_Segment: 5653fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com switch (wn.segmentType()) { 5654fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com case Work::kHorizontalLine_Segment: 5655fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com pts = HQuadIntersect(wt.pts(), wn.left(), 5656fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com wn.right(), wn.y(), wn.xFlipped(), ts); 5657fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com break; 5658fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com case Work::kVerticalLine_Segment: 5659fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com pts = VQuadIntersect(wt.pts(), wn.top(), 5660fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com wn.bottom(), wn.x(), wn.yFlipped(), ts); 5661fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com break; 5662fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com case Work::kLine_Segment: { 5663fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com pts = QuadLineIntersect(wt.pts(), wn.pts(), ts); 566445a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com debugShowQuadLineIntersection(pts, wt, wn, ts); 5665fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com break; 5666fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 5667fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com case Work::kQuad_Segment: { 5668fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com pts = QuadIntersect(wt.pts(), wn.pts(), ts); 566945a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com debugShowQuadIntersection(pts, wt, wn, ts); 5670fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com break; 5671fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 5672fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com case Work::kCubic_Segment: { 567373ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com #if APPROXIMATE_CUBICS 567473ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com swap = true; 567573ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com pts = CubicQuadIntersect(wn.pts(), wt.pts(), ts); 567645a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com debugShowCubicQuadIntersection(pts, wn, wt, ts); 567773ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com #else 5678fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com wt.promoteToCubic(); 5679fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com pts = CubicIntersect(wt.cubic(), wn.pts(), ts); 568045a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com debugShowCubicIntersection(pts, wt, wn, ts); 568173ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com #endif 5682fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com break; 5683fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 5684fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com default: 5685fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com SkASSERT(0); 5686fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 5687fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com break; 5688fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com case Work::kCubic_Segment: 5689fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com switch (wn.segmentType()) { 5690fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com case Work::kHorizontalLine_Segment: 5691fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com pts = HCubicIntersect(wt.pts(), wn.left(), 5692fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com wn.right(), wn.y(), wn.xFlipped(), ts); 569345a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com debugShowCubicLineIntersection(pts, wt, wn, ts); 5694fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com break; 5695fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com case Work::kVerticalLine_Segment: 5696fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com pts = VCubicIntersect(wt.pts(), wn.top(), 5697fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com wn.bottom(), wn.x(), wn.yFlipped(), ts); 569845a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com debugShowCubicLineIntersection(pts, wt, wn, ts); 5699fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com break; 5700fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com case Work::kLine_Segment: { 5701fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com pts = CubicLineIntersect(wt.pts(), wn.pts(), ts); 570245a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com debugShowCubicLineIntersection(pts, wt, wn, ts); 5703fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com break; 5704fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 5705fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com case Work::kQuad_Segment: { 570673ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com #if APPROXIMATE_CUBICS 570773ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com pts = CubicQuadIntersect(wt.pts(), wn.pts(), ts); 570845a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com debugShowCubicQuadIntersection(pts, wt, wn, ts); 570973ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com #else 5710fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com wn.promoteToCubic(); 5711fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com pts = CubicIntersect(wt.pts(), wn.cubic(), ts); 571245a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com debugShowCubicIntersection(pts, wt, wn, ts); 571373ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com #endif 5714fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com break; 5715fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 5716fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com case Work::kCubic_Segment: { 571773ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com pts = CubicIntersect(wt.pts(), wn.pts(), ts); 571845a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com debugShowCubicIntersection(pts, wt, wn, ts); 5719fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com break; 5720fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 5721fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com default: 5722fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com SkASSERT(0); 5723fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 5724fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com break; 5725fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com default: 5726fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com SkASSERT(0); 5727fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 57288dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com if (!foundCommonContour && pts > 0) { 57298dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com test->addCross(next); 57308dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com next->addCross(test); 57318dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com foundCommonContour = true; 57328dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com } 5733fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com // in addition to recording T values, record matching segment 573473ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com if (ts.unsortable()) { 573573ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com bool start = true; 573673ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com for (int pt = 0; pt < ts.used(); ++pt) { 573773ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com // FIXME: if unsortable, the other points to the original. This logic is 573873ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com // untested downstream. 573945a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com SkPoint point = ts.fPt[pt].asSkPoint(); 57407ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com int testTAt = wt.addUnsortableT(wt, start, point, ts.fT[swap][pt]); 574173ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com wt.addOtherT(testTAt, ts.fT[swap][pt], testTAt); 57427ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com testTAt = wn.addUnsortableT(wn, start ^ ts.fFlip, point, ts.fT[!swap][pt]); 574373ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com wn.addOtherT(testTAt, ts.fT[!swap][pt], testTAt); 574473ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com start ^= true; 574573ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com } 574673ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com continue; 574773ca6243b31e225e9fd5b75a96cbc82d62557de6caryclark@google.com } 574832546db1494a6c6433a7919844133a6ff5b5c7b2caryclark@google.com if (pts == 2) { 574932546db1494a6c6433a7919844133a6ff5b5c7b2caryclark@google.com if (wn.segmentType() <= Work::kLine_Segment 575032546db1494a6c6433a7919844133a6ff5b5c7b2caryclark@google.com && wt.segmentType() <= Work::kLine_Segment) { 575132546db1494a6c6433a7919844133a6ff5b5c7b2caryclark@google.com wt.addCoincident(wn, ts, swap); 575232546db1494a6c6433a7919844133a6ff5b5c7b2caryclark@google.com continue; 575332546db1494a6c6433a7919844133a6ff5b5c7b2caryclark@google.com } 5754beda389e646d6be3cfef853584a78ca8ba39d0fccaryclark@google.com if (wn.segmentType() >= Work::kQuad_Segment 5755beda389e646d6be3cfef853584a78ca8ba39d0fccaryclark@google.com && wt.segmentType() >= Work::kQuad_Segment 575645a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com && ts.fIsCoincident[0]) { 575745a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com SkASSERT(ts.coincidentUsed() == 2); 575832546db1494a6c6433a7919844133a6ff5b5c7b2caryclark@google.com wt.addCoincident(wn, ts, swap); 575932546db1494a6c6433a7919844133a6ff5b5c7b2caryclark@google.com continue; 576032546db1494a6c6433a7919844133a6ff5b5c7b2caryclark@google.com } 576132546db1494a6c6433a7919844133a6ff5b5c7b2caryclark@google.com 5762a3f05facab01712a1b58e60a70b0dbdb90a39830caryclark@google.com } 576315fa138f2276a77679530fb608463ff5b4133f7bcaryclark@google.com for (int pt = 0; pt < pts; ++pt) { 5764fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com SkASSERT(ts.fT[0][pt] >= 0 && ts.fT[0][pt] <= 1); 5765fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com SkASSERT(ts.fT[1][pt] >= 0 && ts.fT[1][pt] <= 1); 576645a8fc6a8b00451f807783f2a6ec640e9bcc7256caryclark@google.com SkPoint point = ts.fPt[pt].asSkPoint(); 57677ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com int testTAt = wt.addT(wn, point, ts.fT[swap][pt]); 57687ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com int nextTAt = wn.addT(wt, point, ts.fT[!swap][pt]); 57696aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com wt.addOtherT(testTAt, ts.fT[!swap][pt ^ ts.fFlip], nextTAt); 57706aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com wn.addOtherT(nextTAt, ts.fT[swap][pt ^ ts.fFlip], testTAt); 5771fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 5772fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } while (wn.advance()); 5773fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } while (wt.advance()); 5774fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com return true; 5775fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com} 5776fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 5777c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.comstatic void addSelfIntersectTs(Contour* test) { 5778c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com Work wt; 5779c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com wt.init(test); 5780c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com do { 5781c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com if (wt.segmentType() != Work::kCubic_Segment) { 5782c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com continue; 5783c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com } 5784c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com Intersections ts; 5785c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com int pts = CubicIntersect(wt.pts(), ts); 5786c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com debugShowCubicIntersection(pts, wt, ts); 5787c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com if (!pts) { 5788c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com continue; 5789c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com } 5790c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com SkASSERT(pts == 1); 5791c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com SkASSERT(ts.fT[0][0] >= 0 && ts.fT[0][0] <= 1); 5792c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com SkASSERT(ts.fT[1][0] >= 0 && ts.fT[1][0] <= 1); 5793c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com SkPoint point = ts.fPt[0].asSkPoint(); 57944aaaaeace7e617ddc473645756fb7c20790bc270caryclark@google.com int testTAt = wt.addSelfT(wt, point, ts.fT[0][0]); 57957ff5c841bf669826b4cbd708ae1a6b3527f15dcacaryclark@google.com int nextTAt = wt.addT(wt, point, ts.fT[1][0]); 5796c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com wt.addOtherT(testTAt, ts.fT[1][0], nextTAt); 5797c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com wt.addOtherT(nextTAt, ts.fT[0][0], testTAt); 5798c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com } while (wt.advance()); 5799c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com} 5800c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com 58018dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com// resolve any coincident pairs found while intersecting, and 5802a833b5c40d0516237e0889fce8af44880423fc20caryclark@google.com// see if coincidence is formed by clipping non-concident segments 58034eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.comstatic void coincidenceCheck(SkTDArray<Contour*>& contourList, int total) { 5804a833b5c40d0516237e0889fce8af44880423fc20caryclark@google.com int contourCount = contourList.count(); 58058f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com#if ONE_PASS_COINCIDENCE_CHECK 5806f25edfeac7c41aafc018c5de75185368838ab404caryclark@google.com for (int cIndex = 0; cIndex < contourCount; ++cIndex) { 5807a833b5c40d0516237e0889fce8af44880423fc20caryclark@google.com Contour* contour = contourList[cIndex]; 58087ba591eb7a7ff71127172bbf140491e18298a97acaryclark@google.com contour->resolveCoincidence(contourList); 58098dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com } 58108f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com#else 58118f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com for (int cIndex = 0; cIndex < contourCount; ++cIndex) { 58128f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com Contour* contour = contourList[cIndex]; 58138f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com contour->addCoincidentPoints(); 58148f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com } 58158f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com for (int cIndex = 0; cIndex < contourCount; ++cIndex) { 58168f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com Contour* contour = contourList[cIndex]; 58178f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com contour->calcCoincidentWinding(); 58188f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com } 58198f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com#endif 58208dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com for (int cIndex = 0; cIndex < contourCount; ++cIndex) { 58218dcf114db9762c02d217beba6e29dffa4e92d298caryclark@google.com Contour* contour = contourList[cIndex]; 58224eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com contour->findTooCloseToCall(); 5823a833b5c40d0516237e0889fce8af44880423fc20caryclark@google.com } 5824a833b5c40d0516237e0889fce8af44880423fc20caryclark@google.com} 5825a833b5c40d0516237e0889fce8af44880423fc20caryclark@google.com 5826db0b3e099f888213535c4ad4c785b84544309033caryclark@google.comstatic int contourRangeCheckY(SkTDArray<Contour*>& contourList, Segment*& current, int& index, 58273586ece1ddbb48cabb2e7a4792be9ff5d74e40d9caryclark@google.com int& endIndex, double& bestHit, SkScalar& bestDx, bool& tryAgain, double& mid, bool opp) { 5828db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com SkPoint basePt; 582910227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com double tAtMid = current->tAtMid(index, endIndex, mid); 583010227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com current->xyAtT(tAtMid, basePt); 5831e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com int contourCount = contourList.count(); 5832e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com SkScalar bestY = SK_ScalarMin; 5833db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com Segment* bestSeg = NULL; 5834db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com int bestTIndex; 5835db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com bool bestOpp; 58363586ece1ddbb48cabb2e7a4792be9ff5d74e40d9caryclark@google.com bool hitSomething = false; 5837e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com for (int cTest = 0; cTest < contourCount; ++cTest) { 5838e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com Contour* contour = contourList[cTest]; 5839e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com bool testOpp = contour->operand() ^ current->operand() ^ opp; 5840e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com if (basePt.fY < contour->bounds().fTop) { 5841e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com continue; 5842e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com } 5843e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com if (bestY > contour->bounds().fBottom) { 5844e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com continue; 5845e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com } 5846db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com int segmentCount = contour->segments().count(); 5847db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com for (int test = 0; test < segmentCount; ++test) { 5848db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com Segment* testSeg = &contour->segments()[test]; 5849db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com SkScalar testY = bestY; 5850db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com double testHit; 585110227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com int testTIndex = testSeg->crossedSpanY(basePt, testY, testHit, hitSomething, tAtMid, 585210227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com testOpp, testSeg == current); 5853db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com if (testTIndex < 0) { 58548f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com if (testTIndex == SK_MinS32) { 58558f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com hitSomething = true; 58568f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com bestSeg = NULL; 58578f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com goto abortContours; // vertical encountered, return and try different point 58588f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com } 5859db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com continue; 5860db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com } 5861db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com if (testSeg == current && current->betweenTs(index, testHit, endIndex)) { 58623586ece1ddbb48cabb2e7a4792be9ff5d74e40d9caryclark@google.com double baseT = current->t(index); 58633586ece1ddbb48cabb2e7a4792be9ff5d74e40d9caryclark@google.com double endT = current->t(endIndex); 58643586ece1ddbb48cabb2e7a4792be9ff5d74e40d9caryclark@google.com double newMid = (testHit - baseT) / (endT - baseT); 58653586ece1ddbb48cabb2e7a4792be9ff5d74e40d9caryclark@google.com#if DEBUG_WINDING 58663586ece1ddbb48cabb2e7a4792be9ff5d74e40d9caryclark@google.com SkPoint midXY, newXY; 586710227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com double midT = current->tAtMid(index, endIndex, mid); 586810227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com current->xyAtT(midT, midXY); 586910227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com double newMidT = current->tAtMid(index, endIndex, newMid); 587010227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com current->xyAtT(newMidT, newXY); 58713586ece1ddbb48cabb2e7a4792be9ff5d74e40d9caryclark@google.com SkDebugf("%s [%d] mid=%1.9g->%1.9g s=%1.9g (%1.9g,%1.9g) m=%1.9g (%1.9g,%1.9g)" 58723586ece1ddbb48cabb2e7a4792be9ff5d74e40d9caryclark@google.com " n=%1.9g (%1.9g,%1.9g) e=%1.9g (%1.9g,%1.9g)\n", __FUNCTION__, 58733586ece1ddbb48cabb2e7a4792be9ff5d74e40d9caryclark@google.com current->debugID(), mid, newMid, 58743586ece1ddbb48cabb2e7a4792be9ff5d74e40d9caryclark@google.com baseT, current->xAtT(index), current->yAtT(index), 58753586ece1ddbb48cabb2e7a4792be9ff5d74e40d9caryclark@google.com baseT + mid * (endT - baseT), midXY.fX, midXY.fY, 58763586ece1ddbb48cabb2e7a4792be9ff5d74e40d9caryclark@google.com baseT + newMid * (endT - baseT), newXY.fX, newXY.fY, 58773586ece1ddbb48cabb2e7a4792be9ff5d74e40d9caryclark@google.com endT, current->xAtT(endIndex), current->yAtT(endIndex)); 58783586ece1ddbb48cabb2e7a4792be9ff5d74e40d9caryclark@google.com#endif 58793586ece1ddbb48cabb2e7a4792be9ff5d74e40d9caryclark@google.com mid = newMid * 2; // calling loop with divide by 2 before continuing 58803586ece1ddbb48cabb2e7a4792be9ff5d74e40d9caryclark@google.com return SK_MinS32; 5881db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com } 5882db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com bestSeg = testSeg; 5883db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com bestHit = testHit; 5884db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com bestOpp = testOpp; 5885db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com bestTIndex = testTIndex; 5886db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com bestY = testY; 5887e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com } 5888e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com } 58898f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.comabortContours: 589010227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com int result; 5891db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com if (!bestSeg) { 589210227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com result = hitSomething ? SK_MinS32 : 0; 589310227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com } else { 589410227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com if (bestSeg->windSum(bestTIndex) == SK_MinS32) { 589510227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com current = bestSeg; 589610227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com index = bestTIndex; 589710227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com endIndex = bestSeg->nextSpan(bestTIndex, 1); 589810227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com SkASSERT(index != endIndex && index >= 0 && endIndex >= 0); 589910227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com tryAgain = true; 590010227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com return 0; 590110227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com } 590210227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com result = bestSeg->windingAtT(bestHit, bestTIndex, bestOpp, bestDx); 590310227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com SkASSERT(bestDx); 5904db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com } 59053586ece1ddbb48cabb2e7a4792be9ff5d74e40d9caryclark@google.com double baseT = current->t(index); 59063586ece1ddbb48cabb2e7a4792be9ff5d74e40d9caryclark@google.com double endT = current->t(endIndex); 59073586ece1ddbb48cabb2e7a4792be9ff5d74e40d9caryclark@google.com bestHit = baseT + mid * (endT - baseT); 5908db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com return result; 5909e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com} 5910e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com 591124bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.comstatic Segment* findUndone(SkTDArray<Contour*>& contourList, int& start, int& end) { 591224bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com int contourCount = contourList.count(); 591324bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com Segment* result; 591424bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com for (int cIndex = 0; cIndex < contourCount; ++cIndex) { 591524bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com Contour* contour = contourList[cIndex]; 591624bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com result = contour->undoneSegment(start, end); 591724bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com if (result) { 591824bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com return result; 591924bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com } 592024bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com } 592124bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com return NULL; 592224bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com} 592324bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com 5924db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com#define OLD_FIND_CHASE 1 592524bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com 592631143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.comstatic Segment* findChase(SkTDArray<Span*>& chase, int& tIndex, int& endIndex) { 5927fa4a6e964691ff9a88bc047418abe2d4324dfcaecaryclark@google.com while (chase.count()) { 59280b7da433fe0eaa2833d1b2900715b013b36d93dacaryclark@google.com Span* span; 59290b7da433fe0eaa2833d1b2900715b013b36d93dacaryclark@google.com chase.pop(&span); 5930fa4a6e964691ff9a88bc047418abe2d4324dfcaecaryclark@google.com const Span& backPtr = span->fOther->span(span->fOtherIndex); 5931fa4a6e964691ff9a88bc047418abe2d4324dfcaecaryclark@google.com Segment* segment = backPtr.fOther; 5932fa4a6e964691ff9a88bc047418abe2d4324dfcaecaryclark@google.com tIndex = backPtr.fOtherIndex; 59339764cc6c109dba208592fe5f16447b8439375746caryclark@google.com SkTDArray<Angle> angles; 59349764cc6c109dba208592fe5f16447b8439375746caryclark@google.com int done = 0; 59359764cc6c109dba208592fe5f16447b8439375746caryclark@google.com if (segment->activeAngle(tIndex, done, angles)) { 59369764cc6c109dba208592fe5f16447b8439375746caryclark@google.com Angle* last = angles.end() - 1; 59379764cc6c109dba208592fe5f16447b8439375746caryclark@google.com tIndex = last->start(); 59389764cc6c109dba208592fe5f16447b8439375746caryclark@google.com endIndex = last->end(); 59390b7da433fe0eaa2833d1b2900715b013b36d93dacaryclark@google.com #if TRY_ROTATE 59400b7da433fe0eaa2833d1b2900715b013b36d93dacaryclark@google.com *chase.insert(0) = span; 59410b7da433fe0eaa2833d1b2900715b013b36d93dacaryclark@google.com #else 59420b7da433fe0eaa2833d1b2900715b013b36d93dacaryclark@google.com *chase.append() = span; 59430b7da433fe0eaa2833d1b2900715b013b36d93dacaryclark@google.com #endif 59449764cc6c109dba208592fe5f16447b8439375746caryclark@google.com return last->segment(); 59459764cc6c109dba208592fe5f16447b8439375746caryclark@google.com } 59469764cc6c109dba208592fe5f16447b8439375746caryclark@google.com if (done == angles.count()) { 59479764cc6c109dba208592fe5f16447b8439375746caryclark@google.com continue; 59489764cc6c109dba208592fe5f16447b8439375746caryclark@google.com } 59499764cc6c109dba208592fe5f16447b8439375746caryclark@google.com SkTDArray<Angle*> sorted; 5950c91dfe417a51f73c28ecf2708df1e0bee942c6eacaryclark@google.com bool sortable = Segment::SortAngles(angles, sorted); 5951db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com int angleCount = sorted.count(); 595203f970652e07c6832cae41fa374cb68ca80d472ccaryclark@google.com#if DEBUG_SORT 595331143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com sorted[0]->segment()->debugShowSort(__FUNCTION__, sorted, 0, 0, 0); 595403f970652e07c6832cae41fa374cb68ca80d472ccaryclark@google.com#endif 5955c91dfe417a51f73c28ecf2708df1e0bee942c6eacaryclark@google.com if (!sortable) { 5956c91dfe417a51f73c28ecf2708df1e0bee942c6eacaryclark@google.com continue; 5957c91dfe417a51f73c28ecf2708df1e0bee942c6eacaryclark@google.com } 59589764cc6c109dba208592fe5f16447b8439375746caryclark@google.com // find first angle, initialize winding to computed fWindSum 59599764cc6c109dba208592fe5f16447b8439375746caryclark@google.com int firstIndex = -1; 59609764cc6c109dba208592fe5f16447b8439375746caryclark@google.com const Angle* angle; 5961db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com#if OLD_FIND_CHASE 5962534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com int winding; 59639764cc6c109dba208592fe5f16447b8439375746caryclark@google.com do { 59649764cc6c109dba208592fe5f16447b8439375746caryclark@google.com angle = sorted[++firstIndex]; 5965534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com segment = angle->segment(); 5966534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com winding = segment->windSum(angle); 5967534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com } while (winding == SK_MinS32); 5968534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com int spanWinding = segment->spanSign(angle->start(), angle->end()); 5969534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com #if DEBUG_WINDING 597031143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com SkDebugf("%s winding=%d spanWinding=%d\n", 597131143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com __FUNCTION__, winding, spanWinding); 597247580694fbe974a065caf7c39c3d2075708c2018caryclark@google.com #endif 597331143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com // turn span winding into contour winding 5974534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com if (spanWinding * winding < 0) { 5975534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com winding += spanWinding; 59769764cc6c109dba208592fe5f16447b8439375746caryclark@google.com } 5977534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com #if DEBUG_SORT 597831143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com segment->debugShowSort(__FUNCTION__, sorted, firstIndex, winding, 0); 5979534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com #endif 59809764cc6c109dba208592fe5f16447b8439375746caryclark@google.com // we care about first sign and whether wind sum indicates this 59819764cc6c109dba208592fe5f16447b8439375746caryclark@google.com // edge is inside or outside. Maybe need to pass span winding 59829764cc6c109dba208592fe5f16447b8439375746caryclark@google.com // or first winding or something into this function? 59839764cc6c109dba208592fe5f16447b8439375746caryclark@google.com // advance to first undone angle, then return it and winding 59849764cc6c109dba208592fe5f16447b8439375746caryclark@google.com // (to set whether edges are active or not) 59859764cc6c109dba208592fe5f16447b8439375746caryclark@google.com int nextIndex = firstIndex + 1; 59869764cc6c109dba208592fe5f16447b8439375746caryclark@google.com int lastIndex = firstIndex != 0 ? firstIndex : angleCount; 5987534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com angle = sorted[firstIndex]; 59882ddff9388694263c7be9347de7eb768cd0847997caryclark@google.com winding -= angle->segment()->spanSign(angle); 5989db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com#else 5990db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com do { 5991db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com angle = sorted[++firstIndex]; 5992db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com segment = angle->segment(); 5993db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com } while (segment->windSum(angle) == SK_MinS32); 5994db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com #if DEBUG_SORT 5995db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com segment->debugShowSort(__FUNCTION__, sorted, firstIndex); 5996db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com #endif 5997db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com int sumWinding = segment->updateWindingReverse(angle); 5998db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com int nextIndex = firstIndex + 1; 5999db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com int lastIndex = firstIndex != 0 ? firstIndex : angleCount; 6000db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com Segment* first = NULL; 6001db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com#endif 60029764cc6c109dba208592fe5f16447b8439375746caryclark@google.com do { 60039764cc6c109dba208592fe5f16447b8439375746caryclark@google.com SkASSERT(nextIndex != firstIndex); 60049764cc6c109dba208592fe5f16447b8439375746caryclark@google.com if (nextIndex == angleCount) { 60059764cc6c109dba208592fe5f16447b8439375746caryclark@google.com nextIndex = 0; 60069764cc6c109dba208592fe5f16447b8439375746caryclark@google.com } 6007534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com angle = sorted[nextIndex]; 60089764cc6c109dba208592fe5f16447b8439375746caryclark@google.com segment = angle->segment(); 6009db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com#if OLD_FIND_CHASE 6010534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com int maxWinding = winding; 60112ddff9388694263c7be9347de7eb768cd0847997caryclark@google.com winding -= segment->spanSign(angle); 6012534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com #if DEBUG_SORT 60132ddff9388694263c7be9347de7eb768cd0847997caryclark@google.com SkDebugf("%s id=%d maxWinding=%d winding=%d sign=%d\n", __FUNCTION__, 60142ddff9388694263c7be9347de7eb768cd0847997caryclark@google.com segment->debugID(), maxWinding, winding, angle->sign()); 6015534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com #endif 60169764cc6c109dba208592fe5f16447b8439375746caryclark@google.com tIndex = angle->start(); 60179764cc6c109dba208592fe5f16447b8439375746caryclark@google.com endIndex = angle->end(); 60189764cc6c109dba208592fe5f16447b8439375746caryclark@google.com int lesser = SkMin32(tIndex, endIndex); 60199764cc6c109dba208592fe5f16447b8439375746caryclark@google.com const Span& nextSpan = segment->span(lesser); 60209764cc6c109dba208592fe5f16447b8439375746caryclark@google.com if (!nextSpan.fDone) { 6021534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com#if 1 6022db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com // FIXME: this be wrong? assign startWinding if edge is in 60239764cc6c109dba208592fe5f16447b8439375746caryclark@google.com // same direction. If the direction is opposite, winding to 60249764cc6c109dba208592fe5f16447b8439375746caryclark@google.com // assign is flipped sign or +/- 1? 602559823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com if (useInnerWinding(maxWinding, winding)) { 6026534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com maxWinding = winding; 6027fa4a6e964691ff9a88bc047418abe2d4324dfcaecaryclark@google.com } 6028db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com segment->markAndChaseWinding(angle, maxWinding, 0); 6029534aa5b9460639a09b9dc30d29e77782e44b8fffcaryclark@google.com#endif 60309764cc6c109dba208592fe5f16447b8439375746caryclark@google.com break; 6031fa4a6e964691ff9a88bc047418abe2d4324dfcaecaryclark@google.com } 6032db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com#else 6033db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com int start = angle->start(); 6034db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com int end = angle->end(); 6035db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com int maxWinding; 6036db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com segment->setUpWinding(start, end, maxWinding, sumWinding); 6037db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com if (!segment->done(angle)) { 6038db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com if (!first) { 6039db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com first = segment; 6040db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com tIndex = start; 6041db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com endIndex = end; 6042db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com } 6043db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com (void) segment->markAngle(maxWinding, sumWinding, true, angle); 6044db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com } 6045db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com#endif 60469764cc6c109dba208592fe5f16447b8439375746caryclark@google.com } while (++nextIndex != lastIndex); 60470b7da433fe0eaa2833d1b2900715b013b36d93dacaryclark@google.com #if TRY_ROTATE 60480b7da433fe0eaa2833d1b2900715b013b36d93dacaryclark@google.com *chase.insert(0) = span; 60490b7da433fe0eaa2833d1b2900715b013b36d93dacaryclark@google.com #else 60500b7da433fe0eaa2833d1b2900715b013b36d93dacaryclark@google.com *chase.append() = span; 60510b7da433fe0eaa2833d1b2900715b013b36d93dacaryclark@google.com #endif 60529764cc6c109dba208592fe5f16447b8439375746caryclark@google.com return segment; 6053fa4a6e964691ff9a88bc047418abe2d4324dfcaecaryclark@google.com } 6054fa4a6e964691ff9a88bc047418abe2d4324dfcaecaryclark@google.com return NULL; 6055fa4a6e964691ff9a88bc047418abe2d4324dfcaecaryclark@google.com} 6056fa4a6e964691ff9a88bc047418abe2d4324dfcaecaryclark@google.com 6057027de226c144d9e6b7a76acb2e904952b5620a5ecaryclark@google.com#if DEBUG_ACTIVE_SPANS 6058027de226c144d9e6b7a76acb2e904952b5620a5ecaryclark@google.comstatic void debugShowActiveSpans(SkTDArray<Contour*>& contourList) { 60596aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com int index; 60606aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com for (index = 0; index < contourList.count(); ++ index) { 6061027de226c144d9e6b7a76acb2e904952b5620a5ecaryclark@google.com contourList[index]->debugShowActiveSpans(); 6062027de226c144d9e6b7a76acb2e904952b5620a5ecaryclark@google.com } 60636aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com for (index = 0; index < contourList.count(); ++ index) { 60646aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com contourList[index]->validateActiveSpans(); 60656aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com } 6066027de226c144d9e6b7a76acb2e904952b5620a5ecaryclark@google.com} 6067027de226c144d9e6b7a76acb2e904952b5620a5ecaryclark@google.com#endif 6068027de226c144d9e6b7a76acb2e904952b5620a5ecaryclark@google.com 6069fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.comstatic Segment* findSortableTop(SkTDArray<Contour*>& contourList, int& index, 6070db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com int& endIndex, SkPoint& topLeft, bool& unsortable, bool& done, bool onlySortable) { 6071fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com Segment* result; 6072fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com do { 6073f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com SkPoint bestXY = {SK_ScalarMax, SK_ScalarMax}; 6074fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com int contourCount = contourList.count(); 6075f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com Segment* topStart = NULL; 6076db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com done = true; 6077f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com for (int cIndex = 0; cIndex < contourCount; ++cIndex) { 6078f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com Contour* contour = contourList[cIndex]; 6079db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com if (contour->done()) { 6080db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com continue; 6081db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com } 6082f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com const Bounds& bounds = contour->bounds(); 6083f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com if (bounds.fBottom < topLeft.fY) { 6084db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com done = false; 6085fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com continue; 6086fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com } 6087f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com if (bounds.fBottom == topLeft.fY && bounds.fRight < topLeft.fX) { 6088db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com done = false; 6089fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com continue; 6090fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com } 6091db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com contour->topSortableSegment(topLeft, bestXY, topStart); 6092db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com if (!contour->done()) { 6093db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com done = false; 6094f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com } 6095f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com } 6096f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com if (!topStart) { 6097f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com return NULL; 6098fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com } 6099f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com topLeft = bestXY; 6100e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com result = topStart->findTop(index, endIndex, unsortable, onlySortable); 6101fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com } while (!result); 6102fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com return result; 6103fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com} 610431143cf37fa38dc98f71c71e518ecc21c83b5e27caryclark@google.com 6105db0b3e099f888213535c4ad4c785b84544309033caryclark@google.comstatic int rightAngleWinding(SkTDArray<Contour*>& contourList, 61063586ece1ddbb48cabb2e7a4792be9ff5d74e40d9caryclark@google.com Segment*& current, int& index, int& endIndex, double& tHit, SkScalar& hitDx, bool& tryAgain, 6107db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com bool opp) { 6108d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com double test = 0.9; 6109d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com int contourWinding; 6110d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com do { 61113586ece1ddbb48cabb2e7a4792be9ff5d74e40d9caryclark@google.com contourWinding = contourRangeCheckY(contourList, current, index, endIndex, tHit, hitDx, 61123586ece1ddbb48cabb2e7a4792be9ff5d74e40d9caryclark@google.com tryAgain, test, opp); 6113db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com if (contourWinding != SK_MinS32 || tryAgain) { 6114d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com return contourWinding; 6115d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com } 6116d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com test /= 2; 6117d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com } while (!approximately_negative(test)); 6118d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com SkASSERT(0); // should be OK to comment out, but interested when this hits 6119d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com return contourWinding; 6120d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com} 6121d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com 6122db0b3e099f888213535c4ad4c785b84544309033caryclark@google.comstatic void skipVertical(SkTDArray<Contour*>& contourList, 6123db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com Segment*& current, int& index, int& endIndex) { 6124db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com if (!current->isVertical(index, endIndex)) { 6125db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com return; 6126db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com } 6127db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com int contourCount = contourList.count(); 6128db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com for (int cIndex = 0; cIndex < contourCount; ++cIndex) { 6129db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com Contour* contour = contourList[cIndex]; 6130db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com if (contour->done()) { 6131db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com continue; 6132db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com } 6133db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com current = contour->nonVerticalSegment(index, endIndex); 6134db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com if (current) { 6135db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com return; 6136db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com } 6137db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com } 6138db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com} 6139db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com 61403586ece1ddbb48cabb2e7a4792be9ff5d74e40d9caryclark@google.comstatic Segment* findSortableTop(SkTDArray<Contour*>& contourList, bool& firstContour, int& index, 6141db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com int& endIndex, SkPoint& topLeft, bool& unsortable, bool& done, bool binary) { 6142db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com Segment* current = findSortableTop(contourList, index, endIndex, topLeft, unsortable, done, 6143db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com true); 6144db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com if (!current) { 6145db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com return NULL; 6146db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com } 6147db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com if (firstContour) { 61483586ece1ddbb48cabb2e7a4792be9ff5d74e40d9caryclark@google.com current->initWinding(index, endIndex); 6149db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com firstContour = false; 6150db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com return current; 6151db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com } 6152db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com int minIndex = SkMin32(index, endIndex); 6153db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com int sumWinding = current->windSum(minIndex); 6154db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com if (sumWinding != SK_MinS32) { 6155db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com return current; 6156db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com } 6157db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com sumWinding = current->computeSum(index, endIndex, binary); 6158db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com if (sumWinding != SK_MinS32) { 6159db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com return current; 6160db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com } 6161db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com int contourWinding; 6162db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com int oppContourWinding = 0; 6163db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com // the simple upward projection of the unresolved points hit unsortable angles 6164db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com // shoot rays at right angles to the segment to find its winding, ignoring angle cases 6165db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com bool tryAgain; 6166db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com double tHit; 61673586ece1ddbb48cabb2e7a4792be9ff5d74e40d9caryclark@google.com SkScalar hitDx = 0; 61683586ece1ddbb48cabb2e7a4792be9ff5d74e40d9caryclark@google.com SkScalar hitOppDx = 0; 6169db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com do { 6170db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com // if current is vertical, find another candidate which is not 6171db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com // if only remaining candidates are vertical, then they can be marked done 617210227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com SkASSERT(index != endIndex && index >= 0 && endIndex >= 0); 6173db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com skipVertical(contourList, current, index, endIndex); 617410227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com SkASSERT(index != endIndex && index >= 0 && endIndex >= 0); 6175db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com tryAgain = false; 61763586ece1ddbb48cabb2e7a4792be9ff5d74e40d9caryclark@google.com contourWinding = rightAngleWinding(contourList, current, index, endIndex, tHit, hitDx, 6177db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com tryAgain, false); 6178db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com if (tryAgain) { 6179d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com continue; 6180d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com } 6181db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com if (!binary) { 6182d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com break; 6183d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com } 61843586ece1ddbb48cabb2e7a4792be9ff5d74e40d9caryclark@google.com oppContourWinding = rightAngleWinding(contourList, current, index, endIndex, tHit, hitOppDx, 6185db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com tryAgain, true); 6186db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com } while (tryAgain); 61878d83d0db6433e009c6c7f9adbd2580578b6f297eskia.committer@gmail.com 61883586ece1ddbb48cabb2e7a4792be9ff5d74e40d9caryclark@google.com current->initWinding(index, endIndex, tHit, contourWinding, hitDx, oppContourWinding, hitOppDx); 6189d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com return current; 6190d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com} 6191d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com 6192d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com// rewrite that abandons keeping local track of winding 61933586ece1ddbb48cabb2e7a4792be9ff5d74e40d9caryclark@google.comstatic bool bridgeWinding(SkTDArray<Contour*>& contourList, PathWrapper& simple) { 6194d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com bool firstContour = true; 6195d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com bool unsortable = false; 6196d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com bool topUnsortable = false; 6197d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com SkPoint topLeft = {SK_ScalarMin, SK_ScalarMin}; 6198d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com do { 6199d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com int index, endIndex; 6200db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com bool topDone; 62013586ece1ddbb48cabb2e7a4792be9ff5d74e40d9caryclark@google.com Segment* current = findSortableTop(contourList, firstContour, index, endIndex, topLeft, 6202db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com topUnsortable, topDone, false); 6203d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com if (!current) { 6204db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com if (topUnsortable || !topDone) { 6205d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com topUnsortable = false; 6206db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com SkASSERT(topLeft.fX != SK_ScalarMin && topLeft.fY != SK_ScalarMin); 6207d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com topLeft.fX = topLeft.fY = SK_ScalarMin; 6208d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com continue; 6209d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com } 6210d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com break; 6211d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com } 6212d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com SkTDArray<Span*> chaseArray; 6213d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com do { 6214d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com if (current->activeWinding(index, endIndex)) { 6215d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com do { 6216d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com #if DEBUG_ACTIVE_SPANS 6217d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com if (!unsortable && current->done()) { 6218d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com debugShowActiveSpans(contourList); 6219d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com } 6220d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com #endif 6221d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com SkASSERT(unsortable || !current->done()); 6222d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com int nextStart = index; 6223d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com int nextEnd = endIndex; 6224d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com Segment* next = current->findNextWinding(chaseArray, nextStart, nextEnd, 6225d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com unsortable); 6226d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com if (!next) { 6227d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com if (!unsortable && simple.hasMove() 6228d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com && current->verb() != SkPath::kLine_Verb 6229d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com && !simple.isClosed()) { 6230d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com current->addCurveTo(index, endIndex, simple, true); 6231d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com SkASSERT(simple.isClosed()); 6232d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com } 6233d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com break; 6234d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com } 62358f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com #if DEBUG_FLOW 62368f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com SkDebugf("%s current id=%d from=(%1.9g,%1.9g) to=(%1.9g,%1.9g)\n", __FUNCTION__, 62378f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com current->debugID(), current->xyAtT(index).fX, current->xyAtT(index).fY, 62388f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com current->xyAtT(endIndex).fX, current->xyAtT(endIndex).fY); 62398f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com #endif 6240d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com current->addCurveTo(index, endIndex, simple, true); 6241d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com current = next; 6242d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com index = nextStart; 6243d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com endIndex = nextEnd; 62448f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com } while (!simple.isClosed() && (!unsortable 624510227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com || !current->done(SkMin32(index, endIndex)))); 6246d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com if (current->activeWinding(index, endIndex) && !simple.isClosed()) { 6247d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com SkASSERT(unsortable); 6248d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com int min = SkMin32(index, endIndex); 6249d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com if (!current->done(min)) { 6250d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com current->addCurveTo(index, endIndex, simple, true); 6251d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com current->markDoneUnary(min); 6252d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com } 6253d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com } 6254d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com simple.close(); 6255d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com } else { 6256db0b3e099f888213535c4ad4c785b84544309033caryclark@google.com Span* last = current->markAndChaseDoneUnary(index, endIndex); 62574aaaaeace7e617ddc473645756fb7c20790bc270caryclark@google.com if (last && !last->fLoop) { 6258d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com *chaseArray.append() = last; 6259d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com } 6260d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com } 6261d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com current = findChase(chaseArray, index, endIndex); 6262d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com #if DEBUG_ACTIVE_SPANS 6263d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com debugShowActiveSpans(contourList); 6264d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com #endif 6265d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com if (!current) { 6266d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com break; 6267d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com } 6268d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com } while (true); 6269d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com } while (true); 6270d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com return simple.someAssemblyRequired(); 6271d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com} 6272d0deb4fa612a44adb941025af52c5179c5d11cd7caryclark@google.com 6273c91dfe417a51f73c28ecf2708df1e0bee942c6eacaryclark@google.com// returns true if all edges were processed 6274f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.comstatic bool bridgeXor(SkTDArray<Contour*>& contourList, PathWrapper& simple) { 627524bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com Segment* current; 627624bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com int start, end; 6277c91dfe417a51f73c28ecf2708df1e0bee942c6eacaryclark@google.com bool unsortable = false; 6278e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com bool closable = true; 627924bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com while ((current = findUndone(contourList, start, end))) { 628024bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com do { 62818f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com #if DEBUG_ACTIVE_SPANS 62828f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com if (!unsortable && current->done()) { 62838f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com debugShowActiveSpans(contourList); 62848f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com } 62858f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com #endif 6286c91dfe417a51f73c28ecf2708df1e0bee942c6eacaryclark@google.com SkASSERT(unsortable || !current->done()); 628724bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com int nextStart = start; 628824bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com int nextEnd = end; 6289c91dfe417a51f73c28ecf2708df1e0bee942c6eacaryclark@google.com Segment* next = current->findNextXor(nextStart, nextEnd, unsortable); 629024bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com if (!next) { 6291e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com if (!unsortable && simple.hasMove() 6292f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com && current->verb() != SkPath::kLine_Verb 6293f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com && !simple.isClosed()) { 6294f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com current->addCurveTo(start, end, simple, true); 6295f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com SkASSERT(simple.isClosed()); 6296c899ad9c7fa28234d99479ab09afb6866bbd8dc3caryclark@google.com } 629724bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com break; 629824bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com } 6299e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com #if DEBUG_FLOW 6300e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com SkDebugf("%s current id=%d from=(%1.9g,%1.9g) to=(%1.9g,%1.9g)\n", __FUNCTION__, 6301e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com current->debugID(), current->xyAtT(start).fX, current->xyAtT(start).fY, 6302e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com current->xyAtT(end).fX, current->xyAtT(end).fY); 6303e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com #endif 6304f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com current->addCurveTo(start, end, simple, true); 630524bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com current = next; 630624bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com start = nextStart; 630724bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com end = nextEnd; 63088f9f468b0555e95b8fc3cf4e6ee1f1fbf5492a1bcaryclark@google.com } while (!simple.isClosed() && (!unsortable || !current->done(SkMin32(start, end)))); 6309e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com if (!simple.isClosed()) { 6310e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com SkASSERT(unsortable); 6311e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com int min = SkMin32(start, end); 6312e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com if (!current->done(min)) { 6313e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com current->addCurveTo(start, end, simple, true); 6314e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com current->markDone(min, 1); 6315e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com } 6316e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com closable = false; 631724bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com } 6318e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com simple.close(); 63196aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com #if DEBUG_ACTIVE_SPANS 63206aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com debugShowActiveSpans(contourList); 63216aea33f92c611d6fdc88bc2352c5c966168af83bcaryclark@google.com #endif 6322d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com } 6323e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com return closable; 632424bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com} 632524bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com 6326b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.comstatic void fixOtherTIndex(SkTDArray<Contour*>& contourList) { 6327b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com int contourCount = contourList.count(); 6328b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com for (int cTest = 0; cTest < contourCount; ++cTest) { 6329b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com Contour* contour = contourList[cTest]; 6330b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com contour->fixOtherTIndex(); 6331b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com } 6332b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com} 6333b45a1b46ee25e9b19800b028bb1ca925212ac7b4caryclark@google.com 6334fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.comstatic void sortSegments(SkTDArray<Contour*>& contourList) { 6335fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com int contourCount = contourList.count(); 6336fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com for (int cTest = 0; cTest < contourCount; ++cTest) { 6337fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com Contour* contour = contourList[cTest]; 6338fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com contour->sortSegments(); 6339fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com } 6340fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com} 6341fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com 63424eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.comstatic void makeContourList(SkTArray<Contour>& contours, SkTDArray<Contour*>& list, 63434eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com bool evenOdd, bool oppEvenOdd) { 6344a833b5c40d0516237e0889fce8af44880423fc20caryclark@google.com int count = contours.count(); 6345fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com if (count == 0) { 6346fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com return; 6347fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 6348a833b5c40d0516237e0889fce8af44880423fc20caryclark@google.com for (int index = 0; index < count; ++index) { 63494eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com Contour& contour = contours[index]; 63504eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com contour.setOppXor(contour.operand() ? evenOdd : oppEvenOdd); 63514eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com *list.append() = &contour; 6352fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 6353fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com QSort<Contour>(list.begin(), list.end() - 1); 6354fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com} 6355fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 6356f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.comstatic bool approximatelyEqual(const SkPoint& a, const SkPoint& b) { 63570b7da433fe0eaa2833d1b2900715b013b36d93dacaryclark@google.com return AlmostEqualUlps(a.fX, b.fX) && AlmostEqualUlps(a.fY, b.fY); 6358f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com} 6359f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com 636010227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.comstatic bool lessThan(SkTDArray<double>& distances, const int one, const int two) { 636110227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com return distances[one] < distances[two]; 636210227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com} 6363f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com /* 6364f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com check start and end of each contour 6365f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com if not the same, record them 6366f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com match them up 6367f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com connect closest 6368f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com reassemble contour pieces into new path 6369f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com */ 6370f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.comstatic void assemble(const PathWrapper& path, PathWrapper& simple) { 6371f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com#if DEBUG_PATH_CONSTRUCTION 6372f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com SkDebugf("%s\n", __FUNCTION__); 6373f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com#endif 6374f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com SkTArray<Contour> contours; 6375f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com EdgeBuilder builder(path, contours); 6376f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com builder.finish(); 6377f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com int count = contours.count(); 63780b7da433fe0eaa2833d1b2900715b013b36d93dacaryclark@google.com int outer; 6379f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com SkTDArray<int> runs; // indices of partial contours 63800b7da433fe0eaa2833d1b2900715b013b36d93dacaryclark@google.com for (outer = 0; outer < count; ++outer) { 63810b7da433fe0eaa2833d1b2900715b013b36d93dacaryclark@google.com const Contour& eContour = contours[outer]; 6382f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com const SkPoint& eStart = eContour.start(); 6383f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com const SkPoint& eEnd = eContour.end(); 6384e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com#if DEBUG_ASSEMBLE 6385e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com SkDebugf("%s contour", __FUNCTION__); 6386e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com if (!approximatelyEqual(eStart, eEnd)) { 6387e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com SkDebugf("[%d]", runs.count()); 6388e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com } else { 6389e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com SkDebugf(" "); 6390e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com } 639161b05dcc7ebe48663c3ba84b7bd7449d6c887ac1skia.committer@gmail.com SkDebugf(" start=(%1.9g,%1.9g) end=(%1.9g,%1.9g)\n", 6392e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com eStart.fX, eStart.fY, eEnd.fX, eEnd.fY); 6393e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com#endif 6394f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com if (approximatelyEqual(eStart, eEnd)) { 6395f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com eContour.toPath(simple); 6396f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com continue; 6397f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com } 63980b7da433fe0eaa2833d1b2900715b013b36d93dacaryclark@google.com *runs.append() = outer; 6399f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com } 6400f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com count = runs.count(); 64010b7da433fe0eaa2833d1b2900715b013b36d93dacaryclark@google.com if (count == 0) { 64020b7da433fe0eaa2833d1b2900715b013b36d93dacaryclark@google.com return; 64030b7da433fe0eaa2833d1b2900715b013b36d93dacaryclark@google.com } 6404f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com SkTDArray<int> sLink, eLink; 6405f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com sLink.setCount(count); 6406f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com eLink.setCount(count); 640710227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com int rIndex, iIndex; 6408f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com for (rIndex = 0; rIndex < count; ++rIndex) { 6409aa35831d1d0e4c798a63fe772430adc4f3a038cdcaryclark@google.com sLink[rIndex] = eLink[rIndex] = SK_MaxS32; 641010227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com } 641110227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com SkTDArray<double> distances; 641210227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com const int ends = count * 2; // all starts and ends 641310227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com const int entries = (ends - 1) * count; // folded triangle : n * (n - 1) / 2 641410227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com distances.setCount(entries); 641510227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com for (rIndex = 0; rIndex < ends - 1; ++rIndex) { 641610227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com outer = runs[rIndex >> 1]; 64170b7da433fe0eaa2833d1b2900715b013b36d93dacaryclark@google.com const Contour& oContour = contours[outer]; 641810227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com const SkPoint& oPt = rIndex & 1 ? oContour.end() : oContour.start(); 641910227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com const int row = rIndex < count - 1 ? rIndex * ends : (ends - rIndex - 2) 642010227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com * ends - rIndex - 1; 642110227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com for (iIndex = rIndex + 1; iIndex < ends; ++iIndex) { 642210227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com int inner = runs[iIndex >> 1]; 64230b7da433fe0eaa2833d1b2900715b013b36d93dacaryclark@google.com const Contour& iContour = contours[inner]; 642410227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com const SkPoint& iPt = iIndex & 1 ? iContour.end() : iContour.start(); 642510227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com double dx = iPt.fX - oPt.fX; 642610227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com double dy = iPt.fY - oPt.fY; 64270b7da433fe0eaa2833d1b2900715b013b36d93dacaryclark@google.com double dist = dx * dx + dy * dy; 642810227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com distances[row + iIndex] = dist; // oStart distance from iStart 642910227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com } 643010227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com } 643110227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com SkTDArray<int> sortedDist; 643210227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com sortedDist.setCount(entries); 643310227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com for (rIndex = 0; rIndex < entries; ++rIndex) { 643410227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com sortedDist[rIndex] = rIndex; 643510227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com } 643610227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com QSort<SkTDArray<double>, int>(distances, sortedDist.begin(), sortedDist.end() - 1, lessThan); 643710227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com int remaining = count; // number of start/end pairs 643810227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com for (rIndex = 0; rIndex < entries; ++rIndex) { 643910227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com int pair = sortedDist[rIndex]; 644010227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com int row = pair / ends; 644110227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com int col = pair - row * ends; 644210227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com int thingOne = row < col ? row : ends - row - 2; 644310227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com int ndxOne = thingOne >> 1; 644410227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com bool endOne = thingOne & 1; 644510227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com int* linkOne = endOne ? eLink.begin() : sLink.begin(); 6446aa35831d1d0e4c798a63fe772430adc4f3a038cdcaryclark@google.com if (linkOne[ndxOne] != SK_MaxS32) { 644710227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com continue; 644810227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com } 644910227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com int thingTwo = row < col ? col : ends - row + col - 1; 645010227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com int ndxTwo = thingTwo >> 1; 645110227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com bool endTwo = thingTwo & 1; 645210227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com int* linkTwo = endTwo ? eLink.begin() : sLink.begin(); 6453aa35831d1d0e4c798a63fe772430adc4f3a038cdcaryclark@google.com if (linkTwo[ndxTwo] != SK_MaxS32) { 645410227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com continue; 645510227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com } 645610227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com SkASSERT(&linkOne[ndxOne] != &linkTwo[ndxTwo]); 645710227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com bool flip = endOne == endTwo; 645810227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com linkOne[ndxOne] = flip ? ~ndxTwo : ndxTwo; 645910227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com linkTwo[ndxTwo] = flip ? ~ndxOne : ndxOne; 646010227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com if (!--remaining) { 646110227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com break; 646210227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com } 6463f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com } 646410227bf4679cd0eccae337cb83de8f64dfa959ebcaryclark@google.com SkASSERT(!remaining); 6465e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com#if DEBUG_ASSEMBLE 6466e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com for (rIndex = 0; rIndex < count; ++rIndex) { 6467e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com int s = sLink[rIndex]; 6468e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com int e = eLink[rIndex]; 6469e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com SkDebugf("%s %c%d <- s%d - e%d -> %c%d\n", __FUNCTION__, s < 0 ? 's' : 'e', 6470e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com s < 0 ? ~s : s, rIndex, rIndex, e < 0 ? 'e' : 's', e < 0 ? ~e : e); 6471f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com } 6472e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com#endif 6473e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com rIndex = 0; 6474f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com do { 6475e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com bool forward = true; 6476e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com bool first = true; 6477e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com int sIndex = sLink[rIndex]; 6478aa35831d1d0e4c798a63fe772430adc4f3a038cdcaryclark@google.com SkASSERT(sIndex != SK_MaxS32); 6479aa35831d1d0e4c798a63fe772430adc4f3a038cdcaryclark@google.com sLink[rIndex] = SK_MaxS32; 6480e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com int eIndex; 6481e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com if (sIndex < 0) { 6482e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com eIndex = sLink[~sIndex]; 6483aa35831d1d0e4c798a63fe772430adc4f3a038cdcaryclark@google.com sLink[~sIndex] = SK_MaxS32; 6484e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com } else { 6485e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com eIndex = eLink[sIndex]; 6486aa35831d1d0e4c798a63fe772430adc4f3a038cdcaryclark@google.com eLink[sIndex] = SK_MaxS32; 6487e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com } 6488aa35831d1d0e4c798a63fe772430adc4f3a038cdcaryclark@google.com SkASSERT(eIndex != SK_MaxS32); 6489e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com#if DEBUG_ASSEMBLE 6490e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com SkDebugf("%s sIndex=%c%d eIndex=%c%d\n", __FUNCTION__, sIndex < 0 ? 's' : 'e', 649161b05dcc7ebe48663c3ba84b7bd7449d6c887ac1skia.committer@gmail.com sIndex < 0 ? ~sIndex : sIndex, eIndex < 0 ? 's' : 'e', 649261b05dcc7ebe48663c3ba84b7bd7449d6c887ac1skia.committer@gmail.com eIndex < 0 ? ~eIndex : eIndex); 6493e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com#endif 6494f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com do { 64950b7da433fe0eaa2833d1b2900715b013b36d93dacaryclark@google.com outer = runs[rIndex]; 64960b7da433fe0eaa2833d1b2900715b013b36d93dacaryclark@google.com const Contour& contour = contours[outer]; 6497f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com if (first) { 6498f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com first = false; 6499e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com const SkPoint* startPtr = &contour.start(); 6500f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com simple.deferredMove(startPtr[0]); 6501f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com } 6502f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com if (forward) { 6503f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com contour.toPartialForward(simple); 6504f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com } else { 6505f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com contour.toPartialBackward(simple); 6506f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com } 6507e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com#if DEBUG_ASSEMBLE 6508e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com SkDebugf("%s rIndex=%d eIndex=%s%d close=%d\n", __FUNCTION__, rIndex, 650961b05dcc7ebe48663c3ba84b7bd7449d6c887ac1skia.committer@gmail.com eIndex < 0 ? "~" : "", eIndex < 0 ? ~eIndex : eIndex, 6510e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com sIndex == ((rIndex != eIndex) ^ forward ? eIndex : ~eIndex)); 6511e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com#endif 6512e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com if (sIndex == ((rIndex != eIndex) ^ forward ? eIndex : ~eIndex)) { 6513f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com simple.close(); 6514f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com break; 6515f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com } 6516f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com if (forward) { 65170b7da433fe0eaa2833d1b2900715b013b36d93dacaryclark@google.com eIndex = eLink[rIndex]; 6518aa35831d1d0e4c798a63fe772430adc4f3a038cdcaryclark@google.com SkASSERT(eIndex != SK_MaxS32); 6519aa35831d1d0e4c798a63fe772430adc4f3a038cdcaryclark@google.com eLink[rIndex] = SK_MaxS32; 65200b7da433fe0eaa2833d1b2900715b013b36d93dacaryclark@google.com if (eIndex >= 0) { 65210b7da433fe0eaa2833d1b2900715b013b36d93dacaryclark@google.com SkASSERT(sLink[eIndex] == rIndex); 6522aa35831d1d0e4c798a63fe772430adc4f3a038cdcaryclark@google.com sLink[eIndex] = SK_MaxS32; 6523f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com } else { 65240b7da433fe0eaa2833d1b2900715b013b36d93dacaryclark@google.com SkASSERT(eLink[~eIndex] == ~rIndex); 6525aa35831d1d0e4c798a63fe772430adc4f3a038cdcaryclark@google.com eLink[~eIndex] = SK_MaxS32; 6526f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com } 6527f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com } else { 65280b7da433fe0eaa2833d1b2900715b013b36d93dacaryclark@google.com eIndex = sLink[rIndex]; 6529aa35831d1d0e4c798a63fe772430adc4f3a038cdcaryclark@google.com SkASSERT(eIndex != SK_MaxS32); 6530aa35831d1d0e4c798a63fe772430adc4f3a038cdcaryclark@google.com sLink[rIndex] = SK_MaxS32; 65310b7da433fe0eaa2833d1b2900715b013b36d93dacaryclark@google.com if (eIndex >= 0) { 65320b7da433fe0eaa2833d1b2900715b013b36d93dacaryclark@google.com SkASSERT(eLink[eIndex] == rIndex); 6533aa35831d1d0e4c798a63fe772430adc4f3a038cdcaryclark@google.com eLink[eIndex] = SK_MaxS32; 6534f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com } else { 65350b7da433fe0eaa2833d1b2900715b013b36d93dacaryclark@google.com SkASSERT(sLink[~eIndex] == ~rIndex); 6536aa35831d1d0e4c798a63fe772430adc4f3a038cdcaryclark@google.com sLink[~eIndex] = SK_MaxS32; 6537f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com } 6538f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com } 65390b7da433fe0eaa2833d1b2900715b013b36d93dacaryclark@google.com rIndex = eIndex; 6540f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com if (rIndex < 0) { 6541f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com forward ^= 1; 6542f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com rIndex = ~rIndex; 6543f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com } 6544f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com } while (true); 6545f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com for (rIndex = 0; rIndex < count; ++rIndex) { 6546aa35831d1d0e4c798a63fe772430adc4f3a038cdcaryclark@google.com if (sLink[rIndex] != SK_MaxS32) { 6547f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com break; 6548f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com } 6549f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com } 6550f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com } while (rIndex < count); 6551e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com#if DEBUG_ASSEMBLE 6552e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com for (rIndex = 0; rIndex < count; ++rIndex) { 6553aa35831d1d0e4c798a63fe772430adc4f3a038cdcaryclark@google.com SkASSERT(sLink[rIndex] == SK_MaxS32); 6554aa35831d1d0e4c798a63fe772430adc4f3a038cdcaryclark@google.com SkASSERT(eLink[rIndex] == SK_MaxS32); 6555e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com } 6556e7bd5f4041701cbab87f6e779eb18fbb9fe74216caryclark@google.com#endif 6557c91dfe417a51f73c28ecf2708df1e0bee942c6eacaryclark@google.com} 6558c91dfe417a51f73c28ecf2708df1e0bee942c6eacaryclark@google.com 6559f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.comvoid simplifyx(const SkPath& path, SkPath& result) { 65601304bb25aa3b0baa61fc2e2900fabcef88801b59caryclark@google.com#if DEBUG_SORT || DEBUG_SWAP_TOP 6561c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com gDebugSortCount = gDebugSortCountDefault; 6562c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com#endif 6563fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com // returns 1 for evenodd, -1 for winding, regardless of inverse-ness 6564f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com result.reset(); 6565f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com result.setFillType(SkPath::kEvenOdd_FillType); 6566f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com PathWrapper simple(result); 6567fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com 6568fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com // turn path into list of segments 6569fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com SkTArray<Contour> contours; 6570fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com EdgeBuilder builder(path, contours); 6571235f56a92f6eb6accbb243e11b3c45e3798f38f2caryclark@google.com builder.finish(); 6572fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com SkTDArray<Contour*> contourList; 65734eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com makeContourList(contours, contourList, false, false); 6574fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com Contour** currentPtr = contourList.begin(); 6575fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com if (!currentPtr) { 6576fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com return; 6577fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com } 65781577e8f9c5bc8436cc71d3438c6d0b9f02c38338caryclark@google.com Contour** listEnd = contourList.end(); 6579fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com // find all intersections between segments 6580fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com do { 6581fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com Contour** nextPtr = currentPtr; 6582fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com Contour* current = *currentPtr++; 6583c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com if (current->containsCubics()) { 6584c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com addSelfIntersectTs(current); 6585c83c70e911a38aea03db4af8dd9841d0d77bd129caryclark@google.com } 6586fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com Contour* next; 6587fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com do { 6588fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com next = *nextPtr++; 658965f9f0a1664a9cb38157ccfbcc3e0e936af0a58ecaryclark@google.com } while (addIntersectTs(current, next) && nextPtr != listEnd); 65901577e8f9c5bc8436cc71d3438c6d0b9f02c38338caryclark@google.com } while (currentPtr != listEnd); 6591a833b5c40d0516237e0889fce8af44880423fc20caryclark@google.com // eat through coincident edges 65924eeda37a7456876cb8d509a4ea43c7f4c684477acaryclark@google.com coincidenceCheck(contourList, 0); 659366ca2fba44fe04f3382a3e22096fe73b60ce19d7caryclark@google.com fixOtherTIndex(contourList); 6594fb51afb03e76c5701fffaa847584a8b7b2c18a7ecaryclark@google.com sortSegments(contourList); 65950b7da433fe0eaa2833d1b2900715b013b36d93dacaryclark@google.com#if DEBUG_ACTIVE_SPANS 65960b7da433fe0eaa2833d1b2900715b013b36d93dacaryclark@google.com debugShowActiveSpans(contourList); 65970b7da433fe0eaa2833d1b2900715b013b36d93dacaryclark@google.com#endif 6598fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com // construct closed contours 65993586ece1ddbb48cabb2e7a4792be9ff5d74e40d9caryclark@google.com if (builder.xorMask() == kWinding_Mask ? bridgeWinding(contourList, simple) 660020c301bd1aa4578c6d0abb23ac2c72b5fbb436dbskia.committer@gmail.com : !bridgeXor(contourList, simple)) 6601c91dfe417a51f73c28ecf2708df1e0bee942c6eacaryclark@google.com { // if some edges could not be resolved, assemble remaining fragments 6602f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com SkPath temp; 6603f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com temp.setFillType(SkPath::kEvenOdd_FillType); 6604f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com PathWrapper assembled(temp); 6605f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com assemble(simple, assembled); 6606f839c0359c308fd06895d9f73fc12c4f3869e399caryclark@google.com result = *assembled.nativePath(); 660724bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com } 6608fa0588ff672564af1c235a63589573829035a60bcaryclark@google.com} 6609