SkPath.h revision 63d73749fbe36491403ea521005fd298dc70a94c
1ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com 28a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com/* 3ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com * Copyright 2006 The Android Open Source Project 48a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com * 5ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com * Use of this source code is governed by a BSD-style license that can be 6ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com * found in the LICENSE file. 78a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 88a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 9ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com 108a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com#ifndef SkPath_DEFINED 118a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com#define SkPath_DEFINED 128a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 138a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com#include "SkMatrix.h" 148a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com#include "SkTDArray.h" 158a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 1656c69773aea56c6c6bd47bc7e7970dd081205184djsollen@google.com#ifdef SK_BUILD_FOR_ANDROID 17f5dbe2f00f853c6a1719924bdd0c33335a53423adjsollen@google.com#define GEN_ID_INC fGenerationID++ 18f5dbe2f00f853c6a1719924bdd0c33335a53423adjsollen@google.com#define GEN_ID_PTR_INC(ptr) ptr->fGenerationID++ 19f5dbe2f00f853c6a1719924bdd0c33335a53423adjsollen@google.com#else 20f5dbe2f00f853c6a1719924bdd0c33335a53423adjsollen@google.com#define GEN_ID_INC 21f5dbe2f00f853c6a1719924bdd0c33335a53423adjsollen@google.com#define GEN_ID_PTR_INC(ptr) 22f5dbe2f00f853c6a1719924bdd0c33335a53423adjsollen@google.com#endif 23f5dbe2f00f853c6a1719924bdd0c33335a53423adjsollen@google.com 24739456585a0cc52b335cd1c0a9fc6b01782a7f89reed@google.comclass SkReader32; 25739456585a0cc52b335cd1c0a9fc6b01782a7f89reed@google.comclass SkWriter32; 268a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.comclass SkAutoPathBoundsUpdate; 278a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.comclass SkString; 288a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 298a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com/** \class SkPath 308a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 318a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com The SkPath class encapsulates compound (multiple contour) geometric paths 328a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com consisting of straight line segments, quadratic curves, and cubic curves. 338a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com*/ 347ffb1b21abcc7bbed5a0fc711f6dd7b9dbb4f577ctguil@chromium.orgclass SK_API SkPath { 358a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.compublic: 368a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com SkPath(); 378a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com SkPath(const SkPath&); 388a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com ~SkPath(); 398a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 408a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com SkPath& operator=(const SkPath&); 41b0af6dad94f3c51ea0d5d6426a9509354338c6b2schenney@chromium.org 423abec1d7c38e9bd786fc6057f9608f3eeec98c86reed@android.com friend bool operator==(const SkPath&, const SkPath&); 433abec1d7c38e9bd786fc6057f9608f3eeec98c86reed@android.com friend bool operator!=(const SkPath& a, const SkPath& b) { 443abec1d7c38e9bd786fc6057f9608f3eeec98c86reed@android.com return !(a == b); 453abec1d7c38e9bd786fc6057f9608f3eeec98c86reed@android.com } 468a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 478a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com enum FillType { 488a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Specifies that "inside" is computed by a non-zero sum of signed 498a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com edge crossings 508a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 518a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com kWinding_FillType, 528a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Specifies that "inside" is computed by an odd number of edge 538a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com crossings 548a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 558a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com kEvenOdd_FillType, 568a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Same as Winding, but draws outside of the path, rather than inside 578a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 588a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com kInverseWinding_FillType, 598a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Same as EvenOdd, but draws outside of the path, rather than inside 608a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 618a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com kInverseEvenOdd_FillType 628a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com }; 638a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 648a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Return the path's fill type. This is used to define how "inside" is 658a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com computed. The default value is kWinding_FillType. 668a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 678a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @return the path's fill type 688a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 698a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com FillType getFillType() const { return (FillType)fFillType; } 708a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 718a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Set the path's fill type. This is used to define how "inside" is 728a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com computed. The default value is kWinding_FillType. 73b0af6dad94f3c51ea0d5d6426a9509354338c6b2schenney@chromium.org 748a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param ft The new fill type for this path 758a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 76f5dbe2f00f853c6a1719924bdd0c33335a53423adjsollen@google.com void setFillType(FillType ft) { 77f5dbe2f00f853c6a1719924bdd0c33335a53423adjsollen@google.com fFillType = SkToU8(ft); 78f5dbe2f00f853c6a1719924bdd0c33335a53423adjsollen@google.com GEN_ID_INC; 79f5dbe2f00f853c6a1719924bdd0c33335a53423adjsollen@google.com } 808a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 818a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Returns true if the filltype is one of the Inverse variants */ 828a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com bool isInverseFillType() const { return (fFillType & 2) != 0; } 838a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 84b54455e440e66e0b1c30954d226226f49aac26d6reed@google.com /** 85b54455e440e66e0b1c30954d226226f49aac26d6reed@google.com * Toggle between inverse and normal filltypes. This reverse the return 86b54455e440e66e0b1c30954d226226f49aac26d6reed@google.com * value of isInverseFillType() 87b54455e440e66e0b1c30954d226226f49aac26d6reed@google.com */ 88f5dbe2f00f853c6a1719924bdd0c33335a53423adjsollen@google.com void toggleInverseFillType() { 89f5dbe2f00f853c6a1719924bdd0c33335a53423adjsollen@google.com fFillType ^= 2; 90f5dbe2f00f853c6a1719924bdd0c33335a53423adjsollen@google.com GEN_ID_INC; 91f5dbe2f00f853c6a1719924bdd0c33335a53423adjsollen@google.com } 928a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 9304863fa14a44ddf85acbc6268690ebc3f0d1d6dbreed@google.com enum Convexity { 9404863fa14a44ddf85acbc6268690ebc3f0d1d6dbreed@google.com kUnknown_Convexity, 9504863fa14a44ddf85acbc6268690ebc3f0d1d6dbreed@google.com kConvex_Convexity, 9604863fa14a44ddf85acbc6268690ebc3f0d1d6dbreed@google.com kConcave_Convexity 9704863fa14a44ddf85acbc6268690ebc3f0d1d6dbreed@google.com }; 9804863fa14a44ddf85acbc6268690ebc3f0d1d6dbreed@google.com 9904863fa14a44ddf85acbc6268690ebc3f0d1d6dbreed@google.com /** 100b54455e440e66e0b1c30954d226226f49aac26d6reed@google.com * Return the path's convexity, as stored in the path. If it is currently 101b54455e440e66e0b1c30954d226226f49aac26d6reed@google.com * unknown, and the computeIfUnknown bool is true, then this will first 102b54455e440e66e0b1c30954d226226f49aac26d6reed@google.com * call ComputeConvexity() and then return that (cached) value. 103b54455e440e66e0b1c30954d226226f49aac26d6reed@google.com */ 104b54455e440e66e0b1c30954d226226f49aac26d6reed@google.com Convexity getConvexity() const { 105b54455e440e66e0b1c30954d226226f49aac26d6reed@google.com if (kUnknown_Convexity == fConvexity) { 106b54455e440e66e0b1c30954d226226f49aac26d6reed@google.com fConvexity = (uint8_t)ComputeConvexity(*this); 107b54455e440e66e0b1c30954d226226f49aac26d6reed@google.com } 108b54455e440e66e0b1c30954d226226f49aac26d6reed@google.com return (Convexity)fConvexity; 109b54455e440e66e0b1c30954d226226f49aac26d6reed@google.com } 110b54455e440e66e0b1c30954d226226f49aac26d6reed@google.com 111b54455e440e66e0b1c30954d226226f49aac26d6reed@google.com /** 112b54455e440e66e0b1c30954d226226f49aac26d6reed@google.com * Return the currently cached value for convexity, even if that is set to 113b54455e440e66e0b1c30954d226226f49aac26d6reed@google.com * kUnknown_Convexity. Note: getConvexity() will automatically call 114b54455e440e66e0b1c30954d226226f49aac26d6reed@google.com * ComputeConvexity and cache its return value if the current setting is 115b54455e440e66e0b1c30954d226226f49aac26d6reed@google.com * kUnknown. 11604863fa14a44ddf85acbc6268690ebc3f0d1d6dbreed@google.com */ 117b54455e440e66e0b1c30954d226226f49aac26d6reed@google.com Convexity getConvexityOrUnknown() const { return (Convexity)fConvexity; } 11804863fa14a44ddf85acbc6268690ebc3f0d1d6dbreed@google.com 11904863fa14a44ddf85acbc6268690ebc3f0d1d6dbreed@google.com /** 12004863fa14a44ddf85acbc6268690ebc3f0d1d6dbreed@google.com * Store a convexity setting in the path. There is no automatic check to 12104863fa14a44ddf85acbc6268690ebc3f0d1d6dbreed@google.com * see if this value actually agress with the return value from 12204863fa14a44ddf85acbc6268690ebc3f0d1d6dbreed@google.com * ComputeConvexity(). 123b54455e440e66e0b1c30954d226226f49aac26d6reed@google.com * 124b54455e440e66e0b1c30954d226226f49aac26d6reed@google.com * Note: even if this is set to a "known" value, if the path is later 125b54455e440e66e0b1c30954d226226f49aac26d6reed@google.com * changed (e.g. lineTo(), addRect(), etc.) then the cached value will be 126b54455e440e66e0b1c30954d226226f49aac26d6reed@google.com * reset to kUnknown_Convexity. 12704863fa14a44ddf85acbc6268690ebc3f0d1d6dbreed@google.com */ 12804863fa14a44ddf85acbc6268690ebc3f0d1d6dbreed@google.com void setConvexity(Convexity); 12904863fa14a44ddf85acbc6268690ebc3f0d1d6dbreed@google.com 13004863fa14a44ddf85acbc6268690ebc3f0d1d6dbreed@google.com /** 13104863fa14a44ddf85acbc6268690ebc3f0d1d6dbreed@google.com * Compute the convexity of the specified path. This does not look at the 13204863fa14a44ddf85acbc6268690ebc3f0d1d6dbreed@google.com * value stored in the path, but computes it directly from the path's data. 13304863fa14a44ddf85acbc6268690ebc3f0d1d6dbreed@google.com * 134b54455e440e66e0b1c30954d226226f49aac26d6reed@google.com * This never returns kUnknown_Convexity. 135b54455e440e66e0b1c30954d226226f49aac26d6reed@google.com * 13604863fa14a44ddf85acbc6268690ebc3f0d1d6dbreed@google.com * If there is more than one contour, this returns kConcave_Convexity. 137b54455e440e66e0b1c30954d226226f49aac26d6reed@google.com * If the contour is degenerate (e.g. there are fewer than 3 non-degenerate 138b54455e440e66e0b1c30954d226226f49aac26d6reed@google.com * segments), then this returns kConvex_Convexity. 13904863fa14a44ddf85acbc6268690ebc3f0d1d6dbreed@google.com * The contour is treated as if it were closed, even if there is no kClose 14004863fa14a44ddf85acbc6268690ebc3f0d1d6dbreed@google.com * verb. 1416b82d1adc6a4726e36674e468ff1157e0b75373freed@android.com */ 14204863fa14a44ddf85acbc6268690ebc3f0d1d6dbreed@google.com static Convexity ComputeConvexity(const SkPath&); 1436b82d1adc6a4726e36674e468ff1157e0b75373freed@android.com 14404863fa14a44ddf85acbc6268690ebc3f0d1d6dbreed@google.com /** 14504863fa14a44ddf85acbc6268690ebc3f0d1d6dbreed@google.com * DEPRECATED: use getConvexity() 14604863fa14a44ddf85acbc6268690ebc3f0d1d6dbreed@google.com * Returns true if the path is flagged as being convex. This is not a 14704863fa14a44ddf85acbc6268690ebc3f0d1d6dbreed@google.com * confirmed by any analysis, it is just the value set earlier. 14804863fa14a44ddf85acbc6268690ebc3f0d1d6dbreed@google.com */ 14904863fa14a44ddf85acbc6268690ebc3f0d1d6dbreed@google.com bool isConvex() const { 15004863fa14a44ddf85acbc6268690ebc3f0d1d6dbreed@google.com return kConvex_Convexity == this->getConvexity(); 15104863fa14a44ddf85acbc6268690ebc3f0d1d6dbreed@google.com } 15204863fa14a44ddf85acbc6268690ebc3f0d1d6dbreed@google.com 15304863fa14a44ddf85acbc6268690ebc3f0d1d6dbreed@google.com /** 15404863fa14a44ddf85acbc6268690ebc3f0d1d6dbreed@google.com * DEPRECATED: use setConvexity() 15504863fa14a44ddf85acbc6268690ebc3f0d1d6dbreed@google.com * Set the isConvex flag to true or false. Convex paths may draw faster if 15604863fa14a44ddf85acbc6268690ebc3f0d1d6dbreed@google.com * this flag is set, though setting this to true on a path that is in fact 15704863fa14a44ddf85acbc6268690ebc3f0d1d6dbreed@google.com * not convex can give undefined results when drawn. Paths default to 15804863fa14a44ddf85acbc6268690ebc3f0d1d6dbreed@google.com * isConvex == false 1596b82d1adc6a4726e36674e468ff1157e0b75373freed@android.com */ 160f5dbe2f00f853c6a1719924bdd0c33335a53423adjsollen@google.com void setIsConvex(bool isConvex) { 16104863fa14a44ddf85acbc6268690ebc3f0d1d6dbreed@google.com this->setConvexity(isConvex ? kConvex_Convexity : kConcave_Convexity); 162f5dbe2f00f853c6a1719924bdd0c33335a53423adjsollen@google.com } 1636b82d1adc6a4726e36674e468ff1157e0b75373freed@android.com 1648a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Clear any lines and curves from the path, making it empty. This frees up 1658a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com internal storage associated with those segments. 1666b82d1adc6a4726e36674e468ff1157e0b75373freed@android.com This does NOT change the fill-type setting nor isConvex 1678a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 1688a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com void reset(); 1698a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 1708a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Similar to reset(), in that all lines and curves are removed from the 1718a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com path. However, any internal storage for those lines/curves is retained, 1728a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com making reuse of the path potentially faster. 1736b82d1adc6a4726e36674e468ff1157e0b75373freed@android.com This does NOT change the fill-type setting nor isConvex 1748a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 1758a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com void rewind(); 1768a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 1778a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Returns true if the path is empty (contains no lines or curves) 1788a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 1798a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @return true if the path is empty (contains no lines or curves) 1808a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 1818a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com bool isEmpty() const; 1828a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 1834da06ab3351f2a96f9216d96106db33a77b19644schenney@chromium.org /** Test a line for zero length 1844da06ab3351f2a96f9216d96106db33a77b19644schenney@chromium.org 1854da06ab3351f2a96f9216d96106db33a77b19644schenney@chromium.org @return true if the line is of zero length; otherwise false. 1864da06ab3351f2a96f9216d96106db33a77b19644schenney@chromium.org */ 1874da06ab3351f2a96f9216d96106db33a77b19644schenney@chromium.org static bool IsLineDegenerate(const SkPoint& p1, const SkPoint& p2) { 1884da06ab3351f2a96f9216d96106db33a77b19644schenney@chromium.org return p1.equalsWithinTolerance(p2, SK_ScalarNearlyZero); 1894da06ab3351f2a96f9216d96106db33a77b19644schenney@chromium.org } 1904da06ab3351f2a96f9216d96106db33a77b19644schenney@chromium.org 1914da06ab3351f2a96f9216d96106db33a77b19644schenney@chromium.org /** Test a quad for zero length 1924da06ab3351f2a96f9216d96106db33a77b19644schenney@chromium.org 1934da06ab3351f2a96f9216d96106db33a77b19644schenney@chromium.org @return true if the quad is of zero length; otherwise false. 1944da06ab3351f2a96f9216d96106db33a77b19644schenney@chromium.org */ 1954da06ab3351f2a96f9216d96106db33a77b19644schenney@chromium.org static bool IsQuadDegenerate(const SkPoint& p1, const SkPoint& p2, 1964da06ab3351f2a96f9216d96106db33a77b19644schenney@chromium.org const SkPoint& p3) { 1974da06ab3351f2a96f9216d96106db33a77b19644schenney@chromium.org return p1.equalsWithinTolerance(p2, SK_ScalarNearlyZero) && 1984da06ab3351f2a96f9216d96106db33a77b19644schenney@chromium.org p2.equalsWithinTolerance(p3, SK_ScalarNearlyZero); 1994da06ab3351f2a96f9216d96106db33a77b19644schenney@chromium.org } 2004da06ab3351f2a96f9216d96106db33a77b19644schenney@chromium.org 2014da06ab3351f2a96f9216d96106db33a77b19644schenney@chromium.org /** Test a cubic curve for zero length 2024da06ab3351f2a96f9216d96106db33a77b19644schenney@chromium.org 2034da06ab3351f2a96f9216d96106db33a77b19644schenney@chromium.org @return true if the cubic is of zero length; otherwise false. 2044da06ab3351f2a96f9216d96106db33a77b19644schenney@chromium.org */ 2054da06ab3351f2a96f9216d96106db33a77b19644schenney@chromium.org static bool IsCubicDegenerate(const SkPoint& p1, const SkPoint& p2, 2064da06ab3351f2a96f9216d96106db33a77b19644schenney@chromium.org const SkPoint& p3, const SkPoint& p4) { 2074da06ab3351f2a96f9216d96106db33a77b19644schenney@chromium.org return p1.equalsWithinTolerance(p2, SK_ScalarNearlyZero) && 2084da06ab3351f2a96f9216d96106db33a77b19644schenney@chromium.org p2.equalsWithinTolerance(p3, SK_ScalarNearlyZero) && 2094da06ab3351f2a96f9216d96106db33a77b19644schenney@chromium.org p3.equalsWithinTolerance(p4, SK_ScalarNearlyZero); 2104da06ab3351f2a96f9216d96106db33a77b19644schenney@chromium.org } 2114da06ab3351f2a96f9216d96106db33a77b19644schenney@chromium.org 2128a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Returns true if the path specifies a rectangle. If so, and if rect is 2138a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com not null, set rect to the bounds of the path. If the path does not 2148a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com specify a rectangle, return false and ignore rect. 2158a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 2168a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param rect If not null, returns the bounds of the path if it specifies 2178a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com a rectangle 2188a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @return true if the path specifies a rectangle 2198a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 2208a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com bool isRect(SkRect* rect) const; 2218a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 222d3aa4ff7a564953dff9a15ff03fd42eebf64569freed@android.com /** Return the number of points in the path 223d3aa4ff7a564953dff9a15ff03fd42eebf64569freed@android.com */ 224d3aa4ff7a564953dff9a15ff03fd42eebf64569freed@android.com int countPoints() const { 225d3aa4ff7a564953dff9a15ff03fd42eebf64569freed@android.com return this->getPoints(NULL, 0); 226d3aa4ff7a564953dff9a15ff03fd42eebf64569freed@android.com } 227d3aa4ff7a564953dff9a15ff03fd42eebf64569freed@android.com 228d3aa4ff7a564953dff9a15ff03fd42eebf64569freed@android.com /** Return the point at the specified index. If the index is out of range 229d3aa4ff7a564953dff9a15ff03fd42eebf64569freed@android.com (i.e. is not 0 <= index < countPoints()) then the returned coordinates 230d3aa4ff7a564953dff9a15ff03fd42eebf64569freed@android.com will be (0,0) 231d3aa4ff7a564953dff9a15ff03fd42eebf64569freed@android.com */ 232d3aa4ff7a564953dff9a15ff03fd42eebf64569freed@android.com SkPoint getPoint(int index) const; 233d3aa4ff7a564953dff9a15ff03fd42eebf64569freed@android.com 2348a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Returns the number of points in the path. Up to max points are copied. 2358a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 2368a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param points If not null, receives up to max points 2378a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param max The maximum number of points to copy into points 2388a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @return the actual number of points in the path 2398a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 2408a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com int getPoints(SkPoint points[], int max) const; 2418a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 2428a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com //! Swap contents of this and other. Guaranteed not to throw 2438a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com void swap(SkPath& other); 2448a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 245d252db03d9650013b545ef9781fe993c07f8f314reed@android.com /** Returns the bounds of the path's points. If the path contains 0 or 1 246d252db03d9650013b545ef9781fe993c07f8f314reed@android.com points, the bounds is set to (0,0,0,0), and isEmpty() will return true. 247d252db03d9650013b545ef9781fe993c07f8f314reed@android.com Note: this bounds may be larger than the actual shape, since curves 248d252db03d9650013b545ef9781fe993c07f8f314reed@android.com do not extend as far as their control points. 249d252db03d9650013b545ef9781fe993c07f8f314reed@android.com */ 250d252db03d9650013b545ef9781fe993c07f8f314reed@android.com const SkRect& getBounds() const { 251d252db03d9650013b545ef9781fe993c07f8f314reed@android.com if (fBoundsIsDirty) { 252d252db03d9650013b545ef9781fe993c07f8f314reed@android.com this->computeBounds(); 253d252db03d9650013b545ef9781fe993c07f8f314reed@android.com } 254d252db03d9650013b545ef9781fe993c07f8f314reed@android.com return fBounds; 255d252db03d9650013b545ef9781fe993c07f8f314reed@android.com } 2568a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 2578a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Calling this will, if the internal cache of the bounds is out of date, 258d252db03d9650013b545ef9781fe993c07f8f314reed@android.com update it so that subsequent calls to getBounds will be instanteous. 2598a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com This also means that any copies or simple transformations of the path 2608a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com will inherit the cached bounds. 261d252db03d9650013b545ef9781fe993c07f8f314reed@android.com */ 262d252db03d9650013b545ef9781fe993c07f8f314reed@android.com void updateBoundsCache() const { 263d252db03d9650013b545ef9781fe993c07f8f314reed@android.com // for now, just calling getBounds() is sufficient 264d252db03d9650013b545ef9781fe993c07f8f314reed@android.com this->getBounds(); 265d252db03d9650013b545ef9781fe993c07f8f314reed@android.com } 2668a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 2678a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com // Construction methods 2688a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 2698a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Hint to the path to prepare for adding more points. This can allow the 2708a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com path to more efficiently grow its storage. 2718a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 2728a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param extraPtCount The number of extra points the path should 2738a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com preallocate for. 2748a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 2758a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com void incReserve(unsigned extraPtCount); 2768a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 2778a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Set the beginning of the next contour to the point (x,y). 2788a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 2798a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param x The x-coordinate of the start of a new contour 2808a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param y The y-coordinate of the start of a new contour 2818a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 2828a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com void moveTo(SkScalar x, SkScalar y); 2838a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 2848a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Set the beginning of the next contour to the point 2858a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 2868a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param p The start of a new contour 2878a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 2888a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com void moveTo(const SkPoint& p) { 2898a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com this->moveTo(p.fX, p.fY); 2908a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com } 2918a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 2928a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Set the beginning of the next contour relative to the last point on the 2938a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com previous contour. If there is no previous contour, this is treated the 2948a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com same as moveTo(). 2958a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 2968a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param dx The amount to add to the x-coordinate of the end of the 2978a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com previous contour, to specify the start of a new contour 2988a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param dy The amount to add to the y-coordinate of the end of the 2998a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com previous contour, to specify the start of a new contour 3008a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 3018a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com void rMoveTo(SkScalar dx, SkScalar dy); 3028a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 3038a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Add a line from the last point to the specified point (x,y). If no 3048a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com moveTo() call has been made for this contour, the first point is 3058a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com automatically set to (0,0). 3068a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 3078a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param x The x-coordinate of the end of a line 3088a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param y The y-coordinate of the end of a line 3098a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 3108a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com void lineTo(SkScalar x, SkScalar y); 3118a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 3128a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Add a line from the last point to the specified point. If no moveTo() 3138a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com call has been made for this contour, the first point is automatically 3148a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com set to (0,0). 3158a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 3168a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param p The end of a line 3178a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 3188a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com void lineTo(const SkPoint& p) { 3198a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com this->lineTo(p.fX, p.fY); 3208a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com } 3218a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 3228a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Same as lineTo, but the coordinates are considered relative to the last 3238a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com point on this contour. If there is no previous point, then a moveTo(0,0) 3248a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com is inserted automatically. 3258a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 3268a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param dx The amount to add to the x-coordinate of the previous point 3278a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com on this contour, to specify a line 3288a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param dy The amount to add to the y-coordinate of the previous point 3298a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com on this contour, to specify a line 3308a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 3318a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com void rLineTo(SkScalar dx, SkScalar dy); 3328a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 3338a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Add a quadratic bezier from the last point, approaching control point 3348a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com (x1,y1), and ending at (x2,y2). If no moveTo() call has been made for 3358a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com this contour, the first point is automatically set to (0,0). 3368a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 3378a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param x1 The x-coordinate of the control point on a quadratic curve 3388a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param y1 The y-coordinate of the control point on a quadratic curve 3398a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param x2 The x-coordinate of the end point on a quadratic curve 3408a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param y2 The y-coordinate of the end point on a quadratic curve 3418a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 3428a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com void quadTo(SkScalar x1, SkScalar y1, SkScalar x2, SkScalar y2); 3438a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 3448a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Add a quadratic bezier from the last point, approaching control point 3458a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com p1, and ending at p2. If no moveTo() call has been made for this 3468a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com contour, the first point is automatically set to (0,0). 3478a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 3488a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param p1 The control point on a quadratic curve 3498a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param p2 The end point on a quadratic curve 3508a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 3518a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com void quadTo(const SkPoint& p1, const SkPoint& p2) { 3528a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com this->quadTo(p1.fX, p1.fY, p2.fX, p2.fY); 3538a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com } 3548a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 3558a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Same as quadTo, but the coordinates are considered relative to the last 3568a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com point on this contour. If there is no previous point, then a moveTo(0,0) 3578a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com is inserted automatically. 3588a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 3598a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param dx1 The amount to add to the x-coordinate of the last point on 3608a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com this contour, to specify the control point of a quadratic curve 3618a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param dy1 The amount to add to the y-coordinate of the last point on 3628a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com this contour, to specify the control point of a quadratic curve 3638a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param dx2 The amount to add to the x-coordinate of the last point on 3648a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com this contour, to specify the end point of a quadratic curve 3658a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param dy2 The amount to add to the y-coordinate of the last point on 3668a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com this contour, to specify the end point of a quadratic curve 3678a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 3688a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com void rQuadTo(SkScalar dx1, SkScalar dy1, SkScalar dx2, SkScalar dy2); 3698a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 3708a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Add a cubic bezier from the last point, approaching control points 3718a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com (x1,y1) and (x2,y2), and ending at (x3,y3). If no moveTo() call has been 3728a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com made for this contour, the first point is automatically set to (0,0). 3738a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 3748a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param x1 The x-coordinate of the 1st control point on a cubic curve 3758a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param y1 The y-coordinate of the 1st control point on a cubic curve 3768a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param x2 The x-coordinate of the 2nd control point on a cubic curve 3778a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param y2 The y-coordinate of the 2nd control point on a cubic curve 3788a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param x3 The x-coordinate of the end point on a cubic curve 3798a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param y3 The y-coordinate of the end point on a cubic curve 3808a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 3818a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com void cubicTo(SkScalar x1, SkScalar y1, SkScalar x2, SkScalar y2, 3828a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com SkScalar x3, SkScalar y3); 3838a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 3848a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Add a cubic bezier from the last point, approaching control points p1 3858a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com and p2, and ending at p3. If no moveTo() call has been made for this 3868a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com contour, the first point is automatically set to (0,0). 3878a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 3888a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param p1 The 1st control point on a cubic curve 3898a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param p2 The 2nd control point on a cubic curve 3908a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param p3 The end point on a cubic curve 3918a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 3928a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com void cubicTo(const SkPoint& p1, const SkPoint& p2, const SkPoint& p3) { 3938a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com this->cubicTo(p1.fX, p1.fY, p2.fX, p2.fY, p3.fX, p3.fY); 3948a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com } 3958a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 3968a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Same as cubicTo, but the coordinates are considered relative to the 3978a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com current point on this contour. If there is no previous point, then a 3988a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com moveTo(0,0) is inserted automatically. 3998a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 4008a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param dx1 The amount to add to the x-coordinate of the last point on 4018a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com this contour, to specify the 1st control point of a cubic curve 4028a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param dy1 The amount to add to the y-coordinate of the last point on 4038a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com this contour, to specify the 1st control point of a cubic curve 4048a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param dx2 The amount to add to the x-coordinate of the last point on 4058a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com this contour, to specify the 2nd control point of a cubic curve 4068a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param dy2 The amount to add to the y-coordinate of the last point on 4078a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com this contour, to specify the 2nd control point of a cubic curve 4088a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param dx3 The amount to add to the x-coordinate of the last point on 4098a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com this contour, to specify the end point of a cubic curve 4108a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param dy3 The amount to add to the y-coordinate of the last point on 4118a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com this contour, to specify the end point of a cubic curve 4128a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 4138a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com void rCubicTo(SkScalar x1, SkScalar y1, SkScalar x2, SkScalar y2, 4148a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com SkScalar x3, SkScalar y3); 4158a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 4168a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Append the specified arc to the path as a new contour. If the start of 4178a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com the path is different from the path's current last point, then an 4188a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com automatic lineTo() is added to connect the current contour to the start 4198a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com of the arc. However, if the path is empty, then we call moveTo() with 4208a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com the first point of the arc. The sweep angle is treated mod 360. 4218a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 4228a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param oval The bounding oval defining the shape and size of the arc 4238a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param startAngle Starting angle (in degrees) where the arc begins 4248a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param sweepAngle Sweep angle (in degrees) measured clockwise. This is 4258a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com treated mod 360. 4268a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param forceMoveTo If true, always begin a new contour with the arc 4278a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 4288a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com void arcTo(const SkRect& oval, SkScalar startAngle, SkScalar sweepAngle, 4298a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com bool forceMoveTo); 4308a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 4318a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Append a line and arc to the current path. This is the same as the 4328a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com PostScript call "arct". 4338a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 4348a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com void arcTo(SkScalar x1, SkScalar y1, SkScalar x2, SkScalar y2, 4358a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com SkScalar radius); 4368a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 4378a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Append a line and arc to the current path. This is the same as the 4388a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com PostScript call "arct". 4398a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 4408a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com void arcTo(const SkPoint p1, const SkPoint p2, SkScalar radius) { 4418a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com this->arcTo(p1.fX, p1.fY, p2.fX, p2.fY, radius); 4428a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com } 4438a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 4448a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Close the current contour. If the current point is not equal to the 4458a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com first point of the contour, a line segment is automatically added. 4468a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 4478a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com void close(); 4488a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 4498a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com enum Direction { 4508a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** clockwise direction for adding closed contours */ 4518a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com kCW_Direction, 4528a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** counter-clockwise direction for adding closed contours */ 4538a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com kCCW_Direction 4548a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com }; 4558a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 4568a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Add a closed rectangle contour to the path 4578a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param rect The rectangle to add as a closed contour to the path 4588a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param dir The direction to wind the rectangle's contour 4598a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 4608a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com void addRect(const SkRect& rect, Direction dir = kCW_Direction); 4618a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 4628a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Add a closed rectangle contour to the path 4638a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 4648a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param left The left side of a rectangle to add as a closed contour 4658a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com to the path 4668a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param top The top of a rectangle to add as a closed contour to the 4678a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com path 4688a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param right The right side of a rectangle to add as a closed contour 4698a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com to the path 4708a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param bottom The bottom of a rectangle to add as a closed contour to 4718a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com the path 4728a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param dir The direction to wind the rectangle's contour 4738a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 4748a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com void addRect(SkScalar left, SkScalar top, SkScalar right, SkScalar bottom, 4758a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com Direction dir = kCW_Direction); 4768a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 4778a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Add a closed oval contour to the path 4788a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 4798a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param oval The bounding oval to add as a closed contour to the path 4808a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param dir The direction to wind the oval's contour 4818a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 4828a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com void addOval(const SkRect& oval, Direction dir = kCW_Direction); 4838a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 4848a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Add a closed circle contour to the path 4858a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 4868a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param x The x-coordinate of the center of a circle to add as a 4878a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com closed contour to the path 4888a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param y The y-coordinate of the center of a circle to add as a 4898a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com closed contour to the path 4908a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param radius The radius of a circle to add as a closed contour to the 4918a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com path 4928a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param dir The direction to wind the circle's contour 4938a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 4948a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com void addCircle(SkScalar x, SkScalar y, SkScalar radius, 4958a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com Direction dir = kCW_Direction); 4968a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 4978a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Add the specified arc to the path as a new contour. 4988a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 4998a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param oval The bounds of oval used to define the size of the arc 5008a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param startAngle Starting angle (in degrees) where the arc begins 5018a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param sweepAngle Sweep angle (in degrees) measured clockwise 5028a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 5038a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com void addArc(const SkRect& oval, SkScalar startAngle, SkScalar sweepAngle); 5048a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 5058a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Add a closed round-rectangle contour to the path 5068a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param rect The bounds of a round-rectangle to add as a closed contour 5078a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param rx The x-radius of the rounded corners on the round-rectangle 5088a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param ry The y-radius of the rounded corners on the round-rectangle 5098a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param dir The direction to wind the round-rectangle's contour 5108a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 5118a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com void addRoundRect(const SkRect& rect, SkScalar rx, SkScalar ry, 5128a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com Direction dir = kCW_Direction); 5138a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 5148a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Add a closed round-rectangle contour to the path. Each corner receives 5158a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com two radius values [X, Y]. The corners are ordered top-left, top-right, 5168a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com bottom-right, bottom-left. 5178a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param rect The bounds of a round-rectangle to add as a closed contour 5188a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param radii Array of 8 scalars, 4 [X,Y] pairs for each corner 5198a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param dir The direction to wind the round-rectangle's contour 5208a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 5218a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com void addRoundRect(const SkRect& rect, const SkScalar radii[], 5228a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com Direction dir = kCW_Direction); 5238a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 5248a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Add a copy of src to the path, offset by (dx,dy) 5258a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param src The path to add as a new contour 5268a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param dx The amount to translate the path in X as it is added 5278a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param dx The amount to translate the path in Y as it is added 5288a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 52963d73749fbe36491403ea521005fd298dc70a94creed@google.com void addPath(const SkPath& src, SkScalar dx, SkScalar dy); 5308a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 5318a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Add a copy of src to the path 5328a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 5338a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com void addPath(const SkPath& src) { 5348a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com SkMatrix m; 5358a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com m.reset(); 5368a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com this->addPath(src, m); 5378a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com } 5388a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 5398a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Add a copy of src to the path, transformed by matrix 5408a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param src The path to add as a new contour 5418a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 5428a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com void addPath(const SkPath& src, const SkMatrix& matrix); 5438a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 54463d73749fbe36491403ea521005fd298dc70a94creed@google.com /** 54563d73749fbe36491403ea521005fd298dc70a94creed@google.com * Same as addPath(), but reverses the src input 54663d73749fbe36491403ea521005fd298dc70a94creed@google.com */ 54763d73749fbe36491403ea521005fd298dc70a94creed@google.com void reverseAddPath(const SkPath& src); 54863d73749fbe36491403ea521005fd298dc70a94creed@google.com 5498a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Offset the path by (dx,dy), returning true on success 5508a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 5518a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param dx The amount in the X direction to offset the entire path 5528a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param dy The amount in the Y direction to offset the entire path 5538a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param dst The translated path is written here 5548a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 5558a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com void offset(SkScalar dx, SkScalar dy, SkPath* dst) const; 5568a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 5578a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Offset the path by (dx,dy), returning true on success 5588a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 5598a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param dx The amount in the X direction to offset the entire path 5608a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param dy The amount in the Y direction to offset the entire path 5618a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 5628a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com void offset(SkScalar dx, SkScalar dy) { 5638a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com this->offset(dx, dy, this); 5648a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com } 5658a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 5668a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Transform the points in this path by matrix, and write the answer into 5678a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com dst. 5688a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 5698a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param matrix The matrix to apply to the path 5708a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param dst The transformed path is written here 5718a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 5728a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com void transform(const SkMatrix& matrix, SkPath* dst) const; 5738a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 5748a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Transform the points in this path by matrix 5758a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 5768a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param matrix The matrix to apply to the path 5778a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 5788a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com void transform(const SkMatrix& matrix) { 5798a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com this->transform(matrix, this); 5808a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com } 5818a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 5828a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Return the last point on the path. If no points have been added, (0,0) 583294dd7b3d7b55ba38881cd4cabb6636abda23eb9reed@google.com is returned. If there are no points, this returns false, otherwise it 584294dd7b3d7b55ba38881cd4cabb6636abda23eb9reed@google.com returns true. 5858a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 5868a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param lastPt The last point on the path is returned here 5878a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 588294dd7b3d7b55ba38881cd4cabb6636abda23eb9reed@google.com bool getLastPt(SkPoint* lastPt) const; 5898a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 5908a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Set the last point on the path. If no points have been added, 5918a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com moveTo(x,y) is automatically called. 5928a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 5938a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param x The new x-coordinate for the last point 5948a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param y The new y-coordinate for the last point 5958a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 5968a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com void setLastPt(SkScalar x, SkScalar y); 5978a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 5988a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Set the last point on the path. If no points have been added, moveTo(p) 5998a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com is automatically called. 6008a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 6018a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param p The new location for the last point 6028a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 6038a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com void setLastPt(const SkPoint& p) { 6048a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com this->setLastPt(p.fX, p.fY); 6058a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com } 6068a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 60710296ccb6a63c65b2e60733a929bf15d8bf94309reed@google.com enum SegmentMask { 60810296ccb6a63c65b2e60733a929bf15d8bf94309reed@google.com kLine_SegmentMask = 1 << 0, 60910296ccb6a63c65b2e60733a929bf15d8bf94309reed@google.com kQuad_SegmentMask = 1 << 1, 61010296ccb6a63c65b2e60733a929bf15d8bf94309reed@google.com kCubic_SegmentMask = 1 << 2 61110296ccb6a63c65b2e60733a929bf15d8bf94309reed@google.com }; 61210296ccb6a63c65b2e60733a929bf15d8bf94309reed@google.com 61310296ccb6a63c65b2e60733a929bf15d8bf94309reed@google.com /** 61410296ccb6a63c65b2e60733a929bf15d8bf94309reed@google.com * Returns a mask, where each bit corresponding to a SegmentMask is 61510296ccb6a63c65b2e60733a929bf15d8bf94309reed@google.com * set if the path contains 1 or more segments of that type. 61610296ccb6a63c65b2e60733a929bf15d8bf94309reed@google.com * Returns 0 for an empty path (no segments). 61710296ccb6a63c65b2e60733a929bf15d8bf94309reed@google.com */ 61810296ccb6a63c65b2e60733a929bf15d8bf94309reed@google.com uint32_t getSegmentMasks() const { return fSegmentMask; } 61910296ccb6a63c65b2e60733a929bf15d8bf94309reed@google.com 6208a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com enum Verb { 6218a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com kMove_Verb, //!< iter.next returns 1 point 6228a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com kLine_Verb, //!< iter.next returns 2 points 6238a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com kQuad_Verb, //!< iter.next returns 3 points 6248a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com kCubic_Verb, //!< iter.next returns 4 points 625b3b8dfa31326c51dab8b5ed569e19ee715582d1bbsalomon@google.com kClose_Verb, //!< iter.next returns 1 point (contour's moveTo pt) 6268a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com kDone_Verb //!< iter.next returns 0 points 6278a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com }; 6288a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 6298a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Iterate through all of the segments (lines, quadratics, cubics) of 6308a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com each contours in a path. 63172785c4c8928a8b0fc5bbdb48929f9356554daceschenney@chromium.org 63272785c4c8928a8b0fc5bbdb48929f9356554daceschenney@chromium.org The iterator cleans up the segments along the way, removing degenerate 63372785c4c8928a8b0fc5bbdb48929f9356554daceschenney@chromium.org segments and adding close verbs where necessary. When the forceClose 63472785c4c8928a8b0fc5bbdb48929f9356554daceschenney@chromium.org argument is provided, each contour (as defined by a new starting 63572785c4c8928a8b0fc5bbdb48929f9356554daceschenney@chromium.org move command) will be completed with a close verb regardless of the 63672785c4c8928a8b0fc5bbdb48929f9356554daceschenney@chromium.org contour's contents. 6378a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 6387ffb1b21abcc7bbed5a0fc711f6dd7b9dbb4f577ctguil@chromium.org class SK_API Iter { 6398a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com public: 64072785c4c8928a8b0fc5bbdb48929f9356554daceschenney@chromium.org Iter(); 64172785c4c8928a8b0fc5bbdb48929f9356554daceschenney@chromium.org Iter(const SkPath&, bool forceClose); 6428a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 6438a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com void setPath(const SkPath&, bool forceClose); 6448a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 6458a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Return the next verb in this iteration of the path. When all 6468a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com segments have been visited, return kDone_Verb. 647b0af6dad94f3c51ea0d5d6426a9509354338c6b2schenney@chromium.org 6488a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param pts The points representing the current verb and/or segment 6498a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @return The verb for the current segment 6508a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 6518a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com Verb next(SkPoint pts[4]); 6528a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 6538a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** If next() returns kLine_Verb, then this query returns true if the 6548a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com line was the result of a close() command (i.e. the end point is the 6558a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com initial moveto for this contour). If next() returned a different 6568a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com verb, this returns an undefined value. 657b0af6dad94f3c51ea0d5d6426a9509354338c6b2schenney@chromium.org 6588a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @return If the last call to next() returned kLine_Verb, return true 6598a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com if it was the result of an explicit close command. 6608a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 6618a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com bool isCloseLine() const { return SkToBool(fCloseLine); } 662b0af6dad94f3c51ea0d5d6426a9509354338c6b2schenney@chromium.org 6638a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Returns true if the current contour is closed (has a kClose_Verb) 6648a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @return true if the current contour is closed (has a kClose_Verb) 6658a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 6668a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com bool isClosedContour() const; 6678a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 6688a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com private: 6698a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com const SkPoint* fPts; 6708a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com const uint8_t* fVerbs; 6718a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com const uint8_t* fVerbStop; 6728a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com SkPoint fMoveTo; 6738a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com SkPoint fLastPt; 6748a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com SkBool8 fForceClose; 6758a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com SkBool8 fNeedClose; 6768a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com SkBool8 fCloseLine; 677b0af6dad94f3c51ea0d5d6426a9509354338c6b2schenney@chromium.org SkBool8 fSegmentState; 6788a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 6798a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com bool cons_moveTo(SkPoint pts[1]); 6808a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com Verb autoClose(SkPoint pts[2]); 6814da06ab3351f2a96f9216d96106db33a77b19644schenney@chromium.org void consumeDegenerateSegments(); 6828a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com }; 6838a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 6846630d8d8ea7a897a18e3d950bab9fa40f065804aschenney@chromium.org /** Iterate through the verbs in the path, providing the associated points. 6856630d8d8ea7a897a18e3d950bab9fa40f065804aschenney@chromium.org */ 6866630d8d8ea7a897a18e3d950bab9fa40f065804aschenney@chromium.org class SK_API RawIter { 6876630d8d8ea7a897a18e3d950bab9fa40f065804aschenney@chromium.org public: 6886630d8d8ea7a897a18e3d950bab9fa40f065804aschenney@chromium.org RawIter(); 6896630d8d8ea7a897a18e3d950bab9fa40f065804aschenney@chromium.org RawIter(const SkPath&); 6906630d8d8ea7a897a18e3d950bab9fa40f065804aschenney@chromium.org 6916630d8d8ea7a897a18e3d950bab9fa40f065804aschenney@chromium.org void setPath(const SkPath&); 6926630d8d8ea7a897a18e3d950bab9fa40f065804aschenney@chromium.org 6936630d8d8ea7a897a18e3d950bab9fa40f065804aschenney@chromium.org /** Return the next verb in this iteration of the path. When all 6946630d8d8ea7a897a18e3d950bab9fa40f065804aschenney@chromium.org segments have been visited, return kDone_Verb. 6956630d8d8ea7a897a18e3d950bab9fa40f065804aschenney@chromium.org 6966630d8d8ea7a897a18e3d950bab9fa40f065804aschenney@chromium.org @param pts The points representing the current verb and/or segment 6976630d8d8ea7a897a18e3d950bab9fa40f065804aschenney@chromium.org @return The verb for the current segment 6986630d8d8ea7a897a18e3d950bab9fa40f065804aschenney@chromium.org */ 6996630d8d8ea7a897a18e3d950bab9fa40f065804aschenney@chromium.org Verb next(SkPoint pts[4]); 7006630d8d8ea7a897a18e3d950bab9fa40f065804aschenney@chromium.org 7016630d8d8ea7a897a18e3d950bab9fa40f065804aschenney@chromium.org private: 7026630d8d8ea7a897a18e3d950bab9fa40f065804aschenney@chromium.org const SkPoint* fPts; 7036630d8d8ea7a897a18e3d950bab9fa40f065804aschenney@chromium.org const uint8_t* fVerbs; 7046630d8d8ea7a897a18e3d950bab9fa40f065804aschenney@chromium.org const uint8_t* fVerbStop; 7056630d8d8ea7a897a18e3d950bab9fa40f065804aschenney@chromium.org SkPoint fMoveTo; 7066630d8d8ea7a897a18e3d950bab9fa40f065804aschenney@chromium.org SkPoint fLastPt; 7076630d8d8ea7a897a18e3d950bab9fa40f065804aschenney@chromium.org }; 7086630d8d8ea7a897a18e3d950bab9fa40f065804aschenney@chromium.org 7098a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com void dump(bool forceClose, const char title[] = NULL) const; 710e522ca5d5f249bd51a00cb68bb051f811d0a9e85reed@android.com void dump() const; 7118a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 712739456585a0cc52b335cd1c0a9fc6b01782a7f89reed@google.com void flatten(SkWriter32&) const; 713739456585a0cc52b335cd1c0a9fc6b01782a7f89reed@google.com void unflatten(SkReader32&); 7148a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 71556c69773aea56c6c6bd47bc7e7970dd081205184djsollen@google.com#ifdef SK_BUILD_FOR_ANDROID 716f5dbe2f00f853c6a1719924bdd0c33335a53423adjsollen@google.com uint32_t getGenerationID() const; 717f5dbe2f00f853c6a1719924bdd0c33335a53423adjsollen@google.com#endif 718f5dbe2f00f853c6a1719924bdd0c33335a53423adjsollen@google.com 7198a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com SkDEBUGCODE(void validate() const;) 7208a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 7218a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.comprivate: 7228a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com SkTDArray<SkPoint> fPts; 7238a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com SkTDArray<uint8_t> fVerbs; 724d252db03d9650013b545ef9781fe993c07f8f314reed@android.com mutable SkRect fBounds; 7258a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com uint8_t fFillType; 72610296ccb6a63c65b2e60733a929bf15d8bf94309reed@google.com uint8_t fSegmentMask; 72710296ccb6a63c65b2e60733a929bf15d8bf94309reed@google.com mutable uint8_t fBoundsIsDirty; 728b54455e440e66e0b1c30954d226226f49aac26d6reed@google.com mutable uint8_t fConvexity; 72956c69773aea56c6c6bd47bc7e7970dd081205184djsollen@google.com#ifdef SK_BUILD_FOR_ANDROID 730f5dbe2f00f853c6a1719924bdd0c33335a53423adjsollen@google.com uint32_t fGenerationID; 731f5dbe2f00f853c6a1719924bdd0c33335a53423adjsollen@google.com#endif 7328a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 733d252db03d9650013b545ef9781fe993c07f8f314reed@android.com // called, if dirty, by getBounds() 734d252db03d9650013b545ef9781fe993c07f8f314reed@android.com void computeBounds() const; 735d252db03d9650013b545ef9781fe993c07f8f314reed@android.com 7368a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com friend class Iter; 7378a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com void cons_moveto(); 7388a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 7398a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com friend class SkPathStroker; 7408a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /* Append the first contour of path, ignoring path's initial point. If no 7418a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com moveTo() call has been made for this contour, the first point is 7428a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com automatically set to (0,0). 7438a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 7448a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com void pathTo(const SkPath& path); 7458a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 7468a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /* Append, in reverse order, the first contour of path, ignoring path's 7478a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com last point. If no moveTo() call has been made for this contour, the 7488a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com first point is automatically set to (0,0). 7498a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 7508a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com void reversePathTo(const SkPath&); 7518a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 7528a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com friend const SkPoint* sk_get_path_points(const SkPath&, int index); 7538a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com friend class SkAutoPathBoundsUpdate; 7548a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com}; 7558a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 7568a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com#endif 757