MatrixTest.cpp revision 97cd69ca23b27d88e08727366c29c1147eb564de
1ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com 2ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com/* 3ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com * Copyright 2011 Google Inc. 4ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.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. 7ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com */ 8ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com#include "Test.h" 9889bd8bd7f604acae0a6303365bc82c06da1e6f3tomhudson@google.com#include "SkMath.h" 10ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com#include "SkMatrix.h" 11383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com#include "SkRandom.h" 12ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com 13ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.comstatic bool nearly_equal_scalar(SkScalar a, SkScalar b) { 142047f00e4698f83499ab91911999a65c21a951c9epoger@google.com // Note that we get more compounded error for multiple operations when 152047f00e4698f83499ab91911999a65c21a951c9epoger@google.com // SK_SCALAR_IS_FIXED. 16ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com#ifdef SK_SCALAR_IS_FLOAT 172047f00e4698f83499ab91911999a65c21a951c9epoger@google.com const SkScalar tolerance = SK_Scalar1 / 200000; 18ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com#else 192047f00e4698f83499ab91911999a65c21a951c9epoger@google.com const SkScalar tolerance = SK_Scalar1 / 1024; 20ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com#endif 21ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com 22ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com return SkScalarAbs(a - b) <= tolerance; 23ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com} 24ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com 25ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.comstatic bool nearly_equal(const SkMatrix& a, const SkMatrix& b) { 26ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com for (int i = 0; i < 9; i++) { 27ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com if (!nearly_equal_scalar(a[i], b[i])) { 28d41344553163085bfcfaf7d5882c6028934f8e3breed@android.com printf("not equal %g %g\n", (float)a[i], (float)b[i]); 29ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com return false; 30ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com } 31ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com } 32ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com return true; 33ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com} 34ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com 358fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.comstatic bool are_equal(skiatest::Reporter* reporter, 368fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com const SkMatrix& a, 378fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com const SkMatrix& b) { 388fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com bool equal = a == b; 398fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com bool cheapEqual = a.cheapEqualTo(b); 408fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com if (equal != cheapEqual) { 418fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com#if SK_SCALAR_IS_FLOAT 4239d4f3a02c21a32b766b13068d5bb65d4c332846bsalomon@google.com if (equal) { 438fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com bool foundZeroSignDiff = false; 448fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com for (int i = 0; i < 9; ++i) { 458fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com float aVal = a.get(i); 468fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com float bVal = b.get(i); 47373ebc634573364c27b1ebd35bb537ef1285cba4bsalomon@google.com int aValI = *SkTCast<int*>(&aVal); 48373ebc634573364c27b1ebd35bb537ef1285cba4bsalomon@google.com int bValI = *SkTCast<int*>(&bVal); 498fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com if (0 == aVal && 0 == bVal && aValI != bValI) { 508fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com foundZeroSignDiff = true; 518fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com } else { 528fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com REPORTER_ASSERT(reporter, aVal == bVal && aValI == aValI); 538fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com } 548fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com } 558fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com REPORTER_ASSERT(reporter, foundZeroSignDiff); 568fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com } else { 578fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com bool foundNaN = false; 588fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com for (int i = 0; i < 9; ++i) { 598fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com float aVal = a.get(i); 608fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com float bVal = b.get(i); 61373ebc634573364c27b1ebd35bb537ef1285cba4bsalomon@google.com int aValI = *SkTCast<int*>(&aVal); 62373ebc634573364c27b1ebd35bb537ef1285cba4bsalomon@google.com int bValI = *SkTCast<int*>(&bVal); 638fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com if (sk_float_isnan(aVal) && aValI == bValI) { 648fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com foundNaN = true; 658fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com } else { 668fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com REPORTER_ASSERT(reporter, aVal == bVal && aValI == bValI); 678fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com } 688fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com } 698fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com REPORTER_ASSERT(reporter, foundNaN); 708fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com } 718fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com#else 728fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com REPORTER_ASSERT(reporter, false); 738fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com#endif 748fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com } 758fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com return equal; 768fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com} 778fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com 78ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.comstatic bool is_identity(const SkMatrix& m) { 79ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com SkMatrix identity; 8080e39a77b16f4396eed230efea1d0b2fc8cbfb00reed@android.com identity.reset(); 81ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com return nearly_equal(m, identity); 82ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com} 83ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com 8497cd69ca23b27d88e08727366c29c1147eb564dereed@google.comstatic void test_matrix_recttorect(skiatest::Reporter* reporter) { 8597cd69ca23b27d88e08727366c29c1147eb564dereed@google.com SkRect src, dst; 8697cd69ca23b27d88e08727366c29c1147eb564dereed@google.com SkMatrix matrix; 8797cd69ca23b27d88e08727366c29c1147eb564dereed@google.com 8897cd69ca23b27d88e08727366c29c1147eb564dereed@google.com src.set(0, 0, SK_Scalar1*10, SK_Scalar1*10); 8997cd69ca23b27d88e08727366c29c1147eb564dereed@google.com dst = src; 9097cd69ca23b27d88e08727366c29c1147eb564dereed@google.com matrix.setRectToRect(src, dst, SkMatrix::kFill_ScaleToFit); 9197cd69ca23b27d88e08727366c29c1147eb564dereed@google.com REPORTER_ASSERT(reporter, SkMatrix::kIdentity_Mask == matrix.getType()); 9297cd69ca23b27d88e08727366c29c1147eb564dereed@google.com REPORTER_ASSERT(reporter, matrix.rectStaysRect()); 9397cd69ca23b27d88e08727366c29c1147eb564dereed@google.com 9497cd69ca23b27d88e08727366c29c1147eb564dereed@google.com dst.offset(SK_Scalar1, SK_Scalar1); 9597cd69ca23b27d88e08727366c29c1147eb564dereed@google.com matrix.setRectToRect(src, dst, SkMatrix::kFill_ScaleToFit); 9697cd69ca23b27d88e08727366c29c1147eb564dereed@google.com REPORTER_ASSERT(reporter, SkMatrix::kTranslate_Mask == matrix.getType()); 9797cd69ca23b27d88e08727366c29c1147eb564dereed@google.com REPORTER_ASSERT(reporter, matrix.rectStaysRect()); 9897cd69ca23b27d88e08727366c29c1147eb564dereed@google.com 9997cd69ca23b27d88e08727366c29c1147eb564dereed@google.com dst.fRight += SK_Scalar1; 10097cd69ca23b27d88e08727366c29c1147eb564dereed@google.com matrix.setRectToRect(src, dst, SkMatrix::kFill_ScaleToFit); 10197cd69ca23b27d88e08727366c29c1147eb564dereed@google.com REPORTER_ASSERT(reporter, SkMatrix::kTranslate_Mask | SkMatrix::kScale_Mask == matrix.getType()); 10297cd69ca23b27d88e08727366c29c1147eb564dereed@google.com REPORTER_ASSERT(reporter, matrix.rectStaysRect()); 10397cd69ca23b27d88e08727366c29c1147eb564dereed@google.com 10497cd69ca23b27d88e08727366c29c1147eb564dereed@google.com dst = src; 10597cd69ca23b27d88e08727366c29c1147eb564dereed@google.com dst.fRight = src.fRight * 2; 10697cd69ca23b27d88e08727366c29c1147eb564dereed@google.com matrix.setRectToRect(src, dst, SkMatrix::kFill_ScaleToFit); 10797cd69ca23b27d88e08727366c29c1147eb564dereed@google.com REPORTER_ASSERT(reporter, SkMatrix::kScale_Mask == matrix.getType()); 10897cd69ca23b27d88e08727366c29c1147eb564dereed@google.com REPORTER_ASSERT(reporter, matrix.rectStaysRect()); 10997cd69ca23b27d88e08727366c29c1147eb564dereed@google.com} 11097cd69ca23b27d88e08727366c29c1147eb564dereed@google.com 1114b7577b042966657c776fd95c67f9363af57945freed@android.comstatic void test_flatten(skiatest::Reporter* reporter, const SkMatrix& m) { 1124b7577b042966657c776fd95c67f9363af57945freed@android.com // add 100 in case we have a bug, I don't want to kill my stack in the test 1134b7577b042966657c776fd95c67f9363af57945freed@android.com char buffer[SkMatrix::kMaxFlattenSize + 100]; 11494e75ee46a569cbcdf61fb7f04ee3a69d3ca0896djsollen@google.com uint32_t size1 = m.writeToMemory(NULL); 11594e75ee46a569cbcdf61fb7f04ee3a69d3ca0896djsollen@google.com uint32_t size2 = m.writeToMemory(buffer); 1164b7577b042966657c776fd95c67f9363af57945freed@android.com REPORTER_ASSERT(reporter, size1 == size2); 1174b7577b042966657c776fd95c67f9363af57945freed@android.com REPORTER_ASSERT(reporter, size1 <= SkMatrix::kMaxFlattenSize); 118d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com 1194b7577b042966657c776fd95c67f9363af57945freed@android.com SkMatrix m2; 12094e75ee46a569cbcdf61fb7f04ee3a69d3ca0896djsollen@google.com uint32_t size3 = m2.readFromMemory(buffer); 12194e75ee46a569cbcdf61fb7f04ee3a69d3ca0896djsollen@google.com REPORTER_ASSERT(reporter, size1 == size3); 1228fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com REPORTER_ASSERT(reporter, are_equal(reporter, m, m2)); 123d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com 1244b7577b042966657c776fd95c67f9363af57945freed@android.com char buffer2[SkMatrix::kMaxFlattenSize + 100]; 12594e75ee46a569cbcdf61fb7f04ee3a69d3ca0896djsollen@google.com size3 = m2.writeToMemory(buffer2); 12694e75ee46a569cbcdf61fb7f04ee3a69d3ca0896djsollen@google.com REPORTER_ASSERT(reporter, size1 == size3); 1274b7577b042966657c776fd95c67f9363af57945freed@android.com REPORTER_ASSERT(reporter, memcmp(buffer, buffer2, size1) == 0); 1284b7577b042966657c776fd95c67f9363af57945freed@android.com} 1294b7577b042966657c776fd95c67f9363af57945freed@android.com 13042639cddc33746b351bbf07c540711eefffe191acaryclark@google.comstatic void test_matrix_max_stretch(skiatest::Reporter* reporter) { 131383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkMatrix identity; 132383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com identity.reset(); 133383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com REPORTER_ASSERT(reporter, SK_Scalar1 == identity.getMaxStretch()); 134383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com 135383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkMatrix scale; 136383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com scale.setScale(SK_Scalar1 * 2, SK_Scalar1 * 4); 137383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com REPORTER_ASSERT(reporter, SK_Scalar1 * 4 == scale.getMaxStretch()); 138383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com 139383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkMatrix rot90Scale; 140383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com rot90Scale.setRotate(90 * SK_Scalar1); 141383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com rot90Scale.postScale(SK_Scalar1 / 4, SK_Scalar1 / 2); 142383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com REPORTER_ASSERT(reporter, SK_Scalar1 / 2 == rot90Scale.getMaxStretch()); 143383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com 144383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkMatrix rotate; 145383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com rotate.setRotate(128 * SK_Scalar1); 146383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com REPORTER_ASSERT(reporter, SkScalarAbs(SK_Scalar1 - rotate.getMaxStretch()) <= SK_ScalarNearlyZero); 147383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com 148383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkMatrix translate; 149383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com translate.setTranslate(10 * SK_Scalar1, -5 * SK_Scalar1); 150383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com REPORTER_ASSERT(reporter, SK_Scalar1 == translate.getMaxStretch()); 151383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com 152383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkMatrix perspX; 153383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com perspX.reset(); 15407faed110275048c83a55ae39042da2c9d916108bungeman@google.com perspX.setPerspX(SkScalarToPersp(SK_Scalar1 / 1000)); 155383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com REPORTER_ASSERT(reporter, -SK_Scalar1 == perspX.getMaxStretch()); 156383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com 157383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkMatrix perspY; 158383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com perspY.reset(); 15907faed110275048c83a55ae39042da2c9d916108bungeman@google.com perspY.setPerspX(SkScalarToPersp(-SK_Scalar1 / 500)); 160383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com REPORTER_ASSERT(reporter, -SK_Scalar1 == perspY.getMaxStretch()); 161383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com 162383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkMatrix baseMats[] = {scale, rot90Scale, rotate, 163383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com translate, perspX, perspY}; 164383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkMatrix mats[2*SK_ARRAY_COUNT(baseMats)]; 16583a444602ec580a0040713eed588c245b4ae0ee9tomhudson@google.com for (size_t i = 0; i < SK_ARRAY_COUNT(baseMats); ++i) { 166383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com mats[i] = baseMats[i]; 167383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com bool invertable = mats[i].invert(&mats[i + SK_ARRAY_COUNT(baseMats)]); 168383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com REPORTER_ASSERT(reporter, invertable); 169383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com } 170383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkRandom rand; 171383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com for (int m = 0; m < 1000; ++m) { 172383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkMatrix mat; 173383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com mat.reset(); 174383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com for (int i = 0; i < 4; ++i) { 175383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com int x = rand.nextU() % SK_ARRAY_COUNT(mats); 176383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com mat.postConcat(mats[x]); 177383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com } 178383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkScalar stretch = mat.getMaxStretch(); 179d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com 180383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com if ((stretch < 0) != mat.hasPerspective()) { 181383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com stretch = mat.getMaxStretch(); 182383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com } 183383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com 184383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com REPORTER_ASSERT(reporter, (stretch < 0) == mat.hasPerspective()); 185383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com 186383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com if (mat.hasPerspective()) { 187383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com m -= 1; // try another non-persp matrix 188383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com continue; 189383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com } 190383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com 191383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com // test a bunch of vectors. None should be scaled by more than stretch 192383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com // (modulo some error) and we should find a vector that is scaled by 193383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com // almost stretch. 194383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com static const SkScalar gStretchTol = (105 * SK_Scalar1) / 100; 195383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com static const SkScalar gMaxStretchTol = (97 * SK_Scalar1) / 100; 196383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkScalar max = 0; 197383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkVector vectors[1000]; 19883a444602ec580a0040713eed588c245b4ae0ee9tomhudson@google.com for (size_t i = 0; i < SK_ARRAY_COUNT(vectors); ++i) { 199383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com vectors[i].fX = rand.nextSScalar1(); 200383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com vectors[i].fY = rand.nextSScalar1(); 201383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com if (!vectors[i].normalize()) { 202383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com i -= 1; 203383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com continue; 204383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com } 205383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com } 206383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com mat.mapVectors(vectors, SK_ARRAY_COUNT(vectors)); 20783a444602ec580a0040713eed588c245b4ae0ee9tomhudson@google.com for (size_t i = 0; i < SK_ARRAY_COUNT(vectors); ++i) { 208383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkScalar d = vectors[i].length(); 209383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com REPORTER_ASSERT(reporter, SkScalarDiv(d, stretch) < gStretchTol); 210383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com if (max < d) { 211383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com max = d; 212383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com } 213383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com } 214383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com REPORTER_ASSERT(reporter, SkScalarDiv(max, stretch) >= gMaxStretchTol); 215383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com } 216383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com} 217383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com 21869afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com// This function is extracted from src/gpu/SkGpuDevice.cpp, 21969afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com// in order to make sure this function works correctly. 22069afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.comstatic bool isSimilarityTransformation(const SkMatrix& matrix, 22169afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com SkScalar tol = SK_ScalarNearlyZero) { 22269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com if (matrix.isIdentity() || matrix.getType() == SkMatrix::kTranslate_Mask) { 22369afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com return true; 22469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com } 22569afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com if (matrix.hasPerspective()) { 22669afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com return false; 22769afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com } 22869afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 22969afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com SkScalar mx = matrix.get(SkMatrix::kMScaleX); 23069afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com SkScalar sx = matrix.get(SkMatrix::kMSkewX); 23169afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com SkScalar my = matrix.get(SkMatrix::kMScaleY); 23269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com SkScalar sy = matrix.get(SkMatrix::kMSkewY); 23369afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 23469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com if (mx == 0 && sx == 0 && my == 0 && sy == 0) { 23569afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com return false; 23669afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com } 23769afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 23869afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // it has scales or skews, but it could also be rotation, check it out. 23969afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com SkVector vec[2]; 24069afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com vec[0].set(mx, sx); 24169afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com vec[1].set(sy, my); 24269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 24369afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com return SkScalarNearlyZero(vec[0].dot(vec[1]), SkScalarSquare(tol)) && 24469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com SkScalarNearlyEqual(vec[0].lengthSqd(), vec[1].lengthSqd(), 24569afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com SkScalarSquare(tol)); 24669afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com} 24769afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 24842639cddc33746b351bbf07c540711eefffe191acaryclark@google.comstatic void test_matrix_is_similarity_transform(skiatest::Reporter* reporter) { 24969afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com SkMatrix mat; 25069afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 25169afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // identity 25269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setIdentity(); 25369afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com REPORTER_ASSERT(reporter, isSimilarityTransformation(mat)); 25469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 25569afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // translation only 25669afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 25769afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setTranslate(SkIntToScalar(100), SkIntToScalar(100)); 25869afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com REPORTER_ASSERT(reporter, isSimilarityTransformation(mat)); 25969afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 26069afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // scale with same size 26169afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 26269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setScale(SkIntToScalar(15), SkIntToScalar(15)); 26369afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com REPORTER_ASSERT(reporter, isSimilarityTransformation(mat)); 26469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 26569afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // scale with one negative 26669afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 26769afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setScale(SkIntToScalar(-15), SkIntToScalar(15)); 26869afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com REPORTER_ASSERT(reporter, isSimilarityTransformation(mat)); 26969afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 27069afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // scale with different size 27169afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 27269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setScale(SkIntToScalar(15), SkIntToScalar(20)); 27369afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com REPORTER_ASSERT(reporter, !isSimilarityTransformation(mat)); 27469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 27569afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // scale with same size at a pivot point 27669afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 27769afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setScale(SkIntToScalar(15), SkIntToScalar(15), 27869afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com SkIntToScalar(2), SkIntToScalar(2)); 27969afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com REPORTER_ASSERT(reporter, isSimilarityTransformation(mat)); 28069afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 28169afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // scale with different size at a pivot point 28269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 28369afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setScale(SkIntToScalar(15), SkIntToScalar(20), 28469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com SkIntToScalar(2), SkIntToScalar(2)); 28569afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com REPORTER_ASSERT(reporter, !isSimilarityTransformation(mat)); 28669afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 28769afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // skew with same size 28869afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 28969afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setSkew(SkIntToScalar(15), SkIntToScalar(15)); 29069afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com REPORTER_ASSERT(reporter, !isSimilarityTransformation(mat)); 29169afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 29269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // skew with different size 29369afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 29469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setSkew(SkIntToScalar(15), SkIntToScalar(20)); 29569afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com REPORTER_ASSERT(reporter, !isSimilarityTransformation(mat)); 29669afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 29769afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // skew with same size at a pivot point 29869afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 29969afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setSkew(SkIntToScalar(15), SkIntToScalar(15), 30069afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com SkIntToScalar(2), SkIntToScalar(2)); 30169afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com REPORTER_ASSERT(reporter, !isSimilarityTransformation(mat)); 30269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 30369afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // skew with different size at a pivot point 30469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 30569afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setSkew(SkIntToScalar(15), SkIntToScalar(20), 30669afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com SkIntToScalar(2), SkIntToScalar(2)); 30769afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com REPORTER_ASSERT(reporter, !isSimilarityTransformation(mat)); 30869afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 30969afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // perspective x 31069afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 31169afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setPerspX(SkScalarToPersp(SK_Scalar1 / 2)); 31269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com REPORTER_ASSERT(reporter, !isSimilarityTransformation(mat)); 31369afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 31469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // perspective y 31569afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 31669afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setPerspY(SkScalarToPersp(SK_Scalar1 / 2)); 31769afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com REPORTER_ASSERT(reporter, !isSimilarityTransformation(mat)); 31869afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 31969afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com#if SK_SCALAR_IS_FLOAT 32069afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com /* We bypass the following tests for SK_SCALAR_IS_FIXED build. 32169afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com * The long discussion can be found in this issue: 32269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com * http://codereview.appspot.com/5999050/ 32369afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com * In short, we haven't found a perfect way to fix the precision 32469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com * issue, i.e. the way we use tolerance in isSimilarityTransformation 32569afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com * is incorrect. The situation becomes worse in fixed build, so 32669afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com * we disabled rotation related tests for fixed build. 32769afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com */ 32869afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 32969afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // rotate 33069afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com for (int angle = 0; angle < 360; ++angle) { 33169afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 33269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setRotate(SkIntToScalar(angle)); 33369afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com REPORTER_ASSERT(reporter, isSimilarityTransformation(mat)); 33469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com } 33569afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 33669afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // see if there are any accumulated precision issues 33769afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 33869afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com for (int i = 1; i < 360; i++) { 33969afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.postRotate(SkIntToScalar(1)); 34069afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com } 34169afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com REPORTER_ASSERT(reporter, isSimilarityTransformation(mat)); 34269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 34369afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // rotate + translate 34469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 34569afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setRotate(SkIntToScalar(30)); 34669afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.postTranslate(SkIntToScalar(10), SkIntToScalar(20)); 34769afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com REPORTER_ASSERT(reporter, isSimilarityTransformation(mat)); 34869afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 34969afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // rotate + uniform scale 35069afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 35169afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setRotate(SkIntToScalar(30)); 35269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.postScale(SkIntToScalar(2), SkIntToScalar(2)); 35369afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com REPORTER_ASSERT(reporter, isSimilarityTransformation(mat)); 35469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 35569afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // rotate + non-uniform scale 35669afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 35769afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setRotate(SkIntToScalar(30)); 35869afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.postScale(SkIntToScalar(3), SkIntToScalar(2)); 35969afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com REPORTER_ASSERT(reporter, !isSimilarityTransformation(mat)); 36069afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com#endif 36169afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 36269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // all zero 36369afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setAll(0, 0, 0, 0, 0, 0, 0, 0, 0); 36469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com REPORTER_ASSERT(reporter, !isSimilarityTransformation(mat)); 36569afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 36669afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // all zero except perspective 36769afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setAll(0, 0, 0, 0, 0, 0, 0, 0, SK_Scalar1); 36869afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com REPORTER_ASSERT(reporter, !isSimilarityTransformation(mat)); 36969afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 37069afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // scales zero, only skews 37169afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setAll(0, SK_Scalar1, 0, 37269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com SK_Scalar1, 0, 0, 37369afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 0, 0, SkMatrix::I()[8]); 37469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com REPORTER_ASSERT(reporter, isSimilarityTransformation(mat)); 37569afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com} 37669afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 37742639cddc33746b351bbf07c540711eefffe191acaryclark@google.comstatic void TestMatrix(skiatest::Reporter* reporter) { 378ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com SkMatrix mat, inverse, iden1, iden2; 379ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com 380ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com mat.reset(); 381ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com mat.setTranslate(SK_Scalar1, SK_Scalar1); 3825bfa55b1cd067fa2fe1cbe409573aeaabd98d23creed@google.com REPORTER_ASSERT(reporter, mat.invert(&inverse)); 383ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com iden1.setConcat(mat, inverse); 384ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com REPORTER_ASSERT(reporter, is_identity(iden1)); 385ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com 386ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com mat.setScale(SkIntToScalar(2), SkIntToScalar(2)); 3875bfa55b1cd067fa2fe1cbe409573aeaabd98d23creed@google.com REPORTER_ASSERT(reporter, mat.invert(&inverse)); 388ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com iden1.setConcat(mat, inverse); 389ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com REPORTER_ASSERT(reporter, is_identity(iden1)); 3904b7577b042966657c776fd95c67f9363af57945freed@android.com test_flatten(reporter, mat); 391ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com 392ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com mat.setScale(SK_Scalar1/2, SK_Scalar1/2); 3935bfa55b1cd067fa2fe1cbe409573aeaabd98d23creed@google.com REPORTER_ASSERT(reporter, mat.invert(&inverse)); 394ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com iden1.setConcat(mat, inverse); 395ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com REPORTER_ASSERT(reporter, is_identity(iden1)); 3964b7577b042966657c776fd95c67f9363af57945freed@android.com test_flatten(reporter, mat); 397ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com 398ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com mat.setScale(SkIntToScalar(3), SkIntToScalar(5), SkIntToScalar(20), 0); 399ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com mat.postRotate(SkIntToScalar(25)); 400ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com REPORTER_ASSERT(reporter, mat.invert(NULL)); 4015bfa55b1cd067fa2fe1cbe409573aeaabd98d23creed@google.com REPORTER_ASSERT(reporter, mat.invert(&inverse)); 402ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com iden1.setConcat(mat, inverse); 403ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com REPORTER_ASSERT(reporter, is_identity(iden1)); 404ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com iden2.setConcat(inverse, mat); 405ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com REPORTER_ASSERT(reporter, is_identity(iden2)); 4064b7577b042966657c776fd95c67f9363af57945freed@android.com test_flatten(reporter, mat); 4074b7577b042966657c776fd95c67f9363af57945freed@android.com test_flatten(reporter, iden2); 40880e39a77b16f4396eed230efea1d0b2fc8cbfb00reed@android.com 409ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com // rectStaysRect test 410ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { 411ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com static const struct { 412ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com SkScalar m00, m01, m10, m11; 413ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com bool mStaysRect; 414ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com } 415ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com gRectStaysRectSamples[] = { 416ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { 0, 0, 0, 0, false }, 417ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { 0, 0, 0, SK_Scalar1, false }, 418ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { 0, 0, SK_Scalar1, 0, false }, 419ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { 0, 0, SK_Scalar1, SK_Scalar1, false }, 420ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { 0, SK_Scalar1, 0, 0, false }, 421ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { 0, SK_Scalar1, 0, SK_Scalar1, false }, 422ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { 0, SK_Scalar1, SK_Scalar1, 0, true }, 423ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { 0, SK_Scalar1, SK_Scalar1, SK_Scalar1, false }, 424ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { SK_Scalar1, 0, 0, 0, false }, 425ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { SK_Scalar1, 0, 0, SK_Scalar1, true }, 426ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { SK_Scalar1, 0, SK_Scalar1, 0, false }, 427ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { SK_Scalar1, 0, SK_Scalar1, SK_Scalar1, false }, 428ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { SK_Scalar1, SK_Scalar1, 0, 0, false }, 429ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { SK_Scalar1, SK_Scalar1, 0, SK_Scalar1, false }, 430ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { SK_Scalar1, SK_Scalar1, SK_Scalar1, 0, false }, 431ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { SK_Scalar1, SK_Scalar1, SK_Scalar1, SK_Scalar1, false } 432ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com }; 43380e39a77b16f4396eed230efea1d0b2fc8cbfb00reed@android.com 434ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com for (size_t i = 0; i < SK_ARRAY_COUNT(gRectStaysRectSamples); i++) { 435ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com SkMatrix m; 43680e39a77b16f4396eed230efea1d0b2fc8cbfb00reed@android.com 437ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com m.reset(); 438ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com m.set(SkMatrix::kMScaleX, gRectStaysRectSamples[i].m00); 439ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com m.set(SkMatrix::kMSkewX, gRectStaysRectSamples[i].m01); 440ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com m.set(SkMatrix::kMSkewY, gRectStaysRectSamples[i].m10); 441ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com m.set(SkMatrix::kMScaleY, gRectStaysRectSamples[i].m11); 442ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com REPORTER_ASSERT(reporter, 443ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com m.rectStaysRect() == gRectStaysRectSamples[i].mStaysRect); 444ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com } 445ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com } 4461ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com 447ba7983e55ce15ddcd5534011935178760164fb9dbungeman@google.com mat.reset(); 4481ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com mat.set(SkMatrix::kMScaleX, SkIntToScalar(1)); 4491ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com mat.set(SkMatrix::kMSkewX, SkIntToScalar(2)); 4501ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com mat.set(SkMatrix::kMTransX, SkIntToScalar(3)); 4511ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com mat.set(SkMatrix::kMSkewY, SkIntToScalar(4)); 4521ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com mat.set(SkMatrix::kMScaleY, SkIntToScalar(5)); 4531ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com mat.set(SkMatrix::kMTransY, SkIntToScalar(6)); 4541ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com SkScalar affine[6]; 4551ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com REPORTER_ASSERT(reporter, mat.asAffine(affine)); 4561ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com 4571ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com #define affineEqual(e) affine[SkMatrix::kA##e] == mat.get(SkMatrix::kM##e) 4581ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com REPORTER_ASSERT(reporter, affineEqual(ScaleX)); 4591ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com REPORTER_ASSERT(reporter, affineEqual(SkewY)); 4601ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com REPORTER_ASSERT(reporter, affineEqual(SkewX)); 4611ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com REPORTER_ASSERT(reporter, affineEqual(ScaleY)); 4621ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com REPORTER_ASSERT(reporter, affineEqual(TransX)); 4631ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com REPORTER_ASSERT(reporter, affineEqual(TransY)); 4641ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com #undef affineEqual 4651ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com 46607faed110275048c83a55ae39042da2c9d916108bungeman@google.com mat.set(SkMatrix::kMPersp1, SkScalarToPersp(SK_Scalar1 / 2)); 4671ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com REPORTER_ASSERT(reporter, !mat.asAffine(affine)); 468383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com 4698fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com SkMatrix mat2; 4708fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com mat2.reset(); 4718fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com mat.reset(); 4728fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com SkScalar zero = 0; 4738fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com mat.set(SkMatrix::kMSkewX, -zero); 4748fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com REPORTER_ASSERT(reporter, are_equal(reporter, mat, mat2)); 4758fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com 4768fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com mat2.reset(); 4778fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com mat.reset(); 4788fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com mat.set(SkMatrix::kMSkewX, SK_ScalarNaN); 4798fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com mat2.set(SkMatrix::kMSkewX, SK_ScalarNaN); 4809ed2ecd3ac9b4601fccee8b7232b49bb2f9fed2ebsalomon@google.com // fixed pt doesn't have the property that NaN does not equal itself. 4819ed2ecd3ac9b4601fccee8b7232b49bb2f9fed2ebsalomon@google.com#ifdef SK_SCALAR_IS_FIXED 4829ed2ecd3ac9b4601fccee8b7232b49bb2f9fed2ebsalomon@google.com REPORTER_ASSERT(reporter, are_equal(reporter, mat, mat2)); 4839ed2ecd3ac9b4601fccee8b7232b49bb2f9fed2ebsalomon@google.com#else 4848fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com REPORTER_ASSERT(reporter, !are_equal(reporter, mat, mat2)); 4859ed2ecd3ac9b4601fccee8b7232b49bb2f9fed2ebsalomon@google.com#endif 4868fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com 487383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com test_matrix_max_stretch(reporter); 48869afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com test_matrix_is_similarity_transform(reporter); 48997cd69ca23b27d88e08727366c29c1147eb564dereed@google.com test_matrix_recttorect(reporter); 490ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com} 491ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com 492d8730ea8b25d692c0656f8cf03f02aecfab2a17creed@android.com#include "TestClassDef.h" 493d8730ea8b25d692c0656f8cf03f02aecfab2a17creed@android.comDEFINE_TESTCLASS("Matrix", MatrixTestClass, TestMatrix) 494