MatrixTest.cpp revision 588f3d3896ce84a00ba0b229a4fe8fff2bf67516
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" 1108284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org#include "SkMatrixUtils.h" 12383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com#include "SkRandom.h" 13ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com 14ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.comstatic bool nearly_equal_scalar(SkScalar a, SkScalar b) { 152047f00e4698f83499ab91911999a65c21a951c9epoger@google.com // Note that we get more compounded error for multiple operations when 162047f00e4698f83499ab91911999a65c21a951c9epoger@google.com // SK_SCALAR_IS_FIXED. 17ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com#ifdef SK_SCALAR_IS_FLOAT 182047f00e4698f83499ab91911999a65c21a951c9epoger@google.com const SkScalar tolerance = SK_Scalar1 / 200000; 19ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com#else 202047f00e4698f83499ab91911999a65c21a951c9epoger@google.com const SkScalar tolerance = SK_Scalar1 / 1024; 21ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com#endif 22ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com 23ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com return SkScalarAbs(a - b) <= tolerance; 24ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com} 25ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com 26ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.comstatic bool nearly_equal(const SkMatrix& a, const SkMatrix& b) { 27ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com for (int i = 0; i < 9; i++) { 28ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com if (!nearly_equal_scalar(a[i], b[i])) { 29d41344553163085bfcfaf7d5882c6028934f8e3breed@android.com printf("not equal %g %g\n", (float)a[i], (float)b[i]); 30ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com return false; 31ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com } 32ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com } 33ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com return true; 34ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com} 35ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com 368fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.comstatic bool are_equal(skiatest::Reporter* reporter, 378fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com const SkMatrix& a, 388fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com const SkMatrix& b) { 398fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com bool equal = a == b; 408fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com bool cheapEqual = a.cheapEqualTo(b); 418fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com if (equal != cheapEqual) { 424bd2bdbf04f21237337616aa931e34d7c8991edcdjsollen@google.com#ifdef SK_SCALAR_IS_FLOAT 4339d4f3a02c21a32b766b13068d5bb65d4c332846bsalomon@google.com if (equal) { 448fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com bool foundZeroSignDiff = false; 458fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com for (int i = 0; i < 9; ++i) { 468fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com float aVal = a.get(i); 478fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com float bVal = b.get(i); 48373ebc634573364c27b1ebd35bb537ef1285cba4bsalomon@google.com int aValI = *SkTCast<int*>(&aVal); 49373ebc634573364c27b1ebd35bb537ef1285cba4bsalomon@google.com int bValI = *SkTCast<int*>(&bVal); 508fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com if (0 == aVal && 0 == bVal && aValI != bValI) { 518fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com foundZeroSignDiff = true; 528fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com } else { 538fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com REPORTER_ASSERT(reporter, aVal == bVal && aValI == aValI); 548fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com } 558fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com } 568fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com REPORTER_ASSERT(reporter, foundZeroSignDiff); 578fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com } else { 588fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com bool foundNaN = false; 598fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com for (int i = 0; i < 9; ++i) { 608fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com float aVal = a.get(i); 618fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com float bVal = b.get(i); 62373ebc634573364c27b1ebd35bb537ef1285cba4bsalomon@google.com int aValI = *SkTCast<int*>(&aVal); 63373ebc634573364c27b1ebd35bb537ef1285cba4bsalomon@google.com int bValI = *SkTCast<int*>(&bVal); 648fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com if (sk_float_isnan(aVal) && aValI == bValI) { 658fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com foundNaN = true; 668fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com } else { 678fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com REPORTER_ASSERT(reporter, aVal == bVal && aValI == bValI); 688fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com } 698fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com } 708fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com REPORTER_ASSERT(reporter, foundNaN); 718fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com } 728fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com#else 738fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com REPORTER_ASSERT(reporter, false); 748fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com#endif 758fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com } 768fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com return equal; 778fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com} 788fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com 79ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.comstatic bool is_identity(const SkMatrix& m) { 80ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com SkMatrix identity; 8180e39a77b16f4396eed230efea1d0b2fc8cbfb00reed@android.com identity.reset(); 82ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com return nearly_equal(m, identity); 83ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com} 84ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com 8597cd69ca23b27d88e08727366c29c1147eb564dereed@google.comstatic void test_matrix_recttorect(skiatest::Reporter* reporter) { 8697cd69ca23b27d88e08727366c29c1147eb564dereed@google.com SkRect src, dst; 8797cd69ca23b27d88e08727366c29c1147eb564dereed@google.com SkMatrix matrix; 88f57c01bdcfdf1c923b9a473974bfe6f8c66eca3eskia.committer@gmail.com 8997cd69ca23b27d88e08727366c29c1147eb564dereed@google.com src.set(0, 0, SK_Scalar1*10, SK_Scalar1*10); 9097cd69ca23b27d88e08727366c29c1147eb564dereed@google.com dst = src; 9197cd69ca23b27d88e08727366c29c1147eb564dereed@google.com matrix.setRectToRect(src, dst, SkMatrix::kFill_ScaleToFit); 9297cd69ca23b27d88e08727366c29c1147eb564dereed@google.com REPORTER_ASSERT(reporter, SkMatrix::kIdentity_Mask == matrix.getType()); 9397cd69ca23b27d88e08727366c29c1147eb564dereed@google.com REPORTER_ASSERT(reporter, matrix.rectStaysRect()); 94f57c01bdcfdf1c923b9a473974bfe6f8c66eca3eskia.committer@gmail.com 9597cd69ca23b27d88e08727366c29c1147eb564dereed@google.com dst.offset(SK_Scalar1, SK_Scalar1); 9697cd69ca23b27d88e08727366c29c1147eb564dereed@google.com matrix.setRectToRect(src, dst, SkMatrix::kFill_ScaleToFit); 9797cd69ca23b27d88e08727366c29c1147eb564dereed@google.com REPORTER_ASSERT(reporter, SkMatrix::kTranslate_Mask == matrix.getType()); 9897cd69ca23b27d88e08727366c29c1147eb564dereed@google.com REPORTER_ASSERT(reporter, matrix.rectStaysRect()); 99f57c01bdcfdf1c923b9a473974bfe6f8c66eca3eskia.committer@gmail.com 10097cd69ca23b27d88e08727366c29c1147eb564dereed@google.com dst.fRight += SK_Scalar1; 10197cd69ca23b27d88e08727366c29c1147eb564dereed@google.com matrix.setRectToRect(src, dst, SkMatrix::kFill_ScaleToFit); 102e659c2e820de0b8d12d81247ed4430022ded0a90skia.committer@gmail.com REPORTER_ASSERT(reporter, 10393f03324189f211db95c312b3cb08b435cc5ac34robertphillips@google.com (SkMatrix::kTranslate_Mask | SkMatrix::kScale_Mask) == matrix.getType()); 10497cd69ca23b27d88e08727366c29c1147eb564dereed@google.com REPORTER_ASSERT(reporter, matrix.rectStaysRect()); 10597cd69ca23b27d88e08727366c29c1147eb564dereed@google.com 10697cd69ca23b27d88e08727366c29c1147eb564dereed@google.com dst = src; 10797cd69ca23b27d88e08727366c29c1147eb564dereed@google.com dst.fRight = src.fRight * 2; 10897cd69ca23b27d88e08727366c29c1147eb564dereed@google.com matrix.setRectToRect(src, dst, SkMatrix::kFill_ScaleToFit); 10997cd69ca23b27d88e08727366c29c1147eb564dereed@google.com REPORTER_ASSERT(reporter, SkMatrix::kScale_Mask == matrix.getType()); 11097cd69ca23b27d88e08727366c29c1147eb564dereed@google.com REPORTER_ASSERT(reporter, matrix.rectStaysRect()); 11197cd69ca23b27d88e08727366c29c1147eb564dereed@google.com} 11297cd69ca23b27d88e08727366c29c1147eb564dereed@google.com 1134b7577b042966657c776fd95c67f9363af57945freed@android.comstatic void test_flatten(skiatest::Reporter* reporter, const SkMatrix& m) { 1144b7577b042966657c776fd95c67f9363af57945freed@android.com // add 100 in case we have a bug, I don't want to kill my stack in the test 1154b7577b042966657c776fd95c67f9363af57945freed@android.com char buffer[SkMatrix::kMaxFlattenSize + 100]; 11694e75ee46a569cbcdf61fb7f04ee3a69d3ca0896djsollen@google.com uint32_t size1 = m.writeToMemory(NULL); 11794e75ee46a569cbcdf61fb7f04ee3a69d3ca0896djsollen@google.com uint32_t size2 = m.writeToMemory(buffer); 1184b7577b042966657c776fd95c67f9363af57945freed@android.com REPORTER_ASSERT(reporter, size1 == size2); 1194b7577b042966657c776fd95c67f9363af57945freed@android.com REPORTER_ASSERT(reporter, size1 <= SkMatrix::kMaxFlattenSize); 120d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com 1214b7577b042966657c776fd95c67f9363af57945freed@android.com SkMatrix m2; 12294e75ee46a569cbcdf61fb7f04ee3a69d3ca0896djsollen@google.com uint32_t size3 = m2.readFromMemory(buffer); 12394e75ee46a569cbcdf61fb7f04ee3a69d3ca0896djsollen@google.com REPORTER_ASSERT(reporter, size1 == size3); 1248fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com REPORTER_ASSERT(reporter, are_equal(reporter, m, m2)); 125d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com 1264b7577b042966657c776fd95c67f9363af57945freed@android.com char buffer2[SkMatrix::kMaxFlattenSize + 100]; 12794e75ee46a569cbcdf61fb7f04ee3a69d3ca0896djsollen@google.com size3 = m2.writeToMemory(buffer2); 12894e75ee46a569cbcdf61fb7f04ee3a69d3ca0896djsollen@google.com REPORTER_ASSERT(reporter, size1 == size3); 1294b7577b042966657c776fd95c67f9363af57945freed@android.com REPORTER_ASSERT(reporter, memcmp(buffer, buffer2, size1) == 0); 1304b7577b042966657c776fd95c67f9363af57945freed@android.com} 1314b7577b042966657c776fd95c67f9363af57945freed@android.com 13242639cddc33746b351bbf07c540711eefffe191acaryclark@google.comstatic void test_matrix_max_stretch(skiatest::Reporter* reporter) { 133383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkMatrix identity; 134383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com identity.reset(); 135383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com REPORTER_ASSERT(reporter, SK_Scalar1 == identity.getMaxStretch()); 136383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com 137383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkMatrix scale; 138383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com scale.setScale(SK_Scalar1 * 2, SK_Scalar1 * 4); 139383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com REPORTER_ASSERT(reporter, SK_Scalar1 * 4 == scale.getMaxStretch()); 140383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com 141383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkMatrix rot90Scale; 142383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com rot90Scale.setRotate(90 * SK_Scalar1); 143383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com rot90Scale.postScale(SK_Scalar1 / 4, SK_Scalar1 / 2); 144383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com REPORTER_ASSERT(reporter, SK_Scalar1 / 2 == rot90Scale.getMaxStretch()); 145383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com 146383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkMatrix rotate; 147383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com rotate.setRotate(128 * SK_Scalar1); 148383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com REPORTER_ASSERT(reporter, SkScalarAbs(SK_Scalar1 - rotate.getMaxStretch()) <= SK_ScalarNearlyZero); 149383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com 150383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkMatrix translate; 151383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com translate.setTranslate(10 * SK_Scalar1, -5 * SK_Scalar1); 152383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com REPORTER_ASSERT(reporter, SK_Scalar1 == translate.getMaxStretch()); 153383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com 154383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkMatrix perspX; 155383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com perspX.reset(); 15607faed110275048c83a55ae39042da2c9d916108bungeman@google.com perspX.setPerspX(SkScalarToPersp(SK_Scalar1 / 1000)); 157383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com REPORTER_ASSERT(reporter, -SK_Scalar1 == perspX.getMaxStretch()); 158383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com 159383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkMatrix perspY; 160383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com perspY.reset(); 16107faed110275048c83a55ae39042da2c9d916108bungeman@google.com perspY.setPerspX(SkScalarToPersp(-SK_Scalar1 / 500)); 162383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com REPORTER_ASSERT(reporter, -SK_Scalar1 == perspY.getMaxStretch()); 163383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com 164383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkMatrix baseMats[] = {scale, rot90Scale, rotate, 165383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com translate, perspX, perspY}; 166383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkMatrix mats[2*SK_ARRAY_COUNT(baseMats)]; 16783a444602ec580a0040713eed588c245b4ae0ee9tomhudson@google.com for (size_t i = 0; i < SK_ARRAY_COUNT(baseMats); ++i) { 168383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com mats[i] = baseMats[i]; 169383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com bool invertable = mats[i].invert(&mats[i + SK_ARRAY_COUNT(baseMats)]); 170383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com REPORTER_ASSERT(reporter, invertable); 171383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com } 172c490f801b063a0837501feab3d12b73d71f46312jvanverth@google.com SkMWCRandom rand; 173383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com for (int m = 0; m < 1000; ++m) { 174383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkMatrix mat; 175383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com mat.reset(); 176383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com for (int i = 0; i < 4; ++i) { 177383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com int x = rand.nextU() % SK_ARRAY_COUNT(mats); 178383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com mat.postConcat(mats[x]); 179383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com } 180383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkScalar stretch = mat.getMaxStretch(); 181d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com 182383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com if ((stretch < 0) != mat.hasPerspective()) { 183383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com stretch = mat.getMaxStretch(); 184383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com } 185383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com 186383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com REPORTER_ASSERT(reporter, (stretch < 0) == mat.hasPerspective()); 187383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com 188383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com if (mat.hasPerspective()) { 189383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com m -= 1; // try another non-persp matrix 190383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com continue; 191383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com } 192383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com 193383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com // test a bunch of vectors. None should be scaled by more than stretch 194383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com // (modulo some error) and we should find a vector that is scaled by 195383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com // almost stretch. 196383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com static const SkScalar gStretchTol = (105 * SK_Scalar1) / 100; 197383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com static const SkScalar gMaxStretchTol = (97 * SK_Scalar1) / 100; 198383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkScalar max = 0; 199383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkVector vectors[1000]; 20083a444602ec580a0040713eed588c245b4ae0ee9tomhudson@google.com for (size_t i = 0; i < SK_ARRAY_COUNT(vectors); ++i) { 201383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com vectors[i].fX = rand.nextSScalar1(); 202383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com vectors[i].fY = rand.nextSScalar1(); 203383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com if (!vectors[i].normalize()) { 204383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com i -= 1; 205383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com continue; 206383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com } 207383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com } 208383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com mat.mapVectors(vectors, SK_ARRAY_COUNT(vectors)); 20983a444602ec580a0040713eed588c245b4ae0ee9tomhudson@google.com for (size_t i = 0; i < SK_ARRAY_COUNT(vectors); ++i) { 210383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkScalar d = vectors[i].length(); 211383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com REPORTER_ASSERT(reporter, SkScalarDiv(d, stretch) < gStretchTol); 212383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com if (max < d) { 213383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com max = d; 214383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com } 215383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com } 216383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com REPORTER_ASSERT(reporter, SkScalarDiv(max, stretch) >= gMaxStretchTol); 217383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com } 218383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com} 219383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com 22046d3d39e65e0b3ea2ad7c91c176ccafb4df0fa24jvanverth@google.comstatic void test_matrix_is_similarity(skiatest::Reporter* reporter) { 22169afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com SkMatrix mat; 22269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 22369afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // identity 22469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setIdentity(); 22546d3d39e65e0b3ea2ad7c91c176ccafb4df0fa24jvanverth@google.com REPORTER_ASSERT(reporter, mat.isSimilarity()); 22669afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 22769afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // translation only 22869afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 22969afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setTranslate(SkIntToScalar(100), SkIntToScalar(100)); 23046d3d39e65e0b3ea2ad7c91c176ccafb4df0fa24jvanverth@google.com REPORTER_ASSERT(reporter, mat.isSimilarity()); 23169afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 23269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // scale with same size 23369afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 23469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setScale(SkIntToScalar(15), SkIntToScalar(15)); 23546d3d39e65e0b3ea2ad7c91c176ccafb4df0fa24jvanverth@google.com REPORTER_ASSERT(reporter, mat.isSimilarity()); 23669afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 23769afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // scale with one negative 23869afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 23969afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setScale(SkIntToScalar(-15), SkIntToScalar(15)); 24046d3d39e65e0b3ea2ad7c91c176ccafb4df0fa24jvanverth@google.com REPORTER_ASSERT(reporter, mat.isSimilarity()); 24169afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 24269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // scale with different size 24369afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 24469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setScale(SkIntToScalar(15), SkIntToScalar(20)); 24546d3d39e65e0b3ea2ad7c91c176ccafb4df0fa24jvanverth@google.com REPORTER_ASSERT(reporter, !mat.isSimilarity()); 24669afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 24769afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // scale with same size at a pivot point 24869afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 24969afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setScale(SkIntToScalar(15), SkIntToScalar(15), 25069afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com SkIntToScalar(2), SkIntToScalar(2)); 25146d3d39e65e0b3ea2ad7c91c176ccafb4df0fa24jvanverth@google.com REPORTER_ASSERT(reporter, mat.isSimilarity()); 25269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 25369afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // scale with different size at a pivot point 25469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 25569afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setScale(SkIntToScalar(15), SkIntToScalar(20), 25669afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com SkIntToScalar(2), SkIntToScalar(2)); 25746d3d39e65e0b3ea2ad7c91c176ccafb4df0fa24jvanverth@google.com REPORTER_ASSERT(reporter, !mat.isSimilarity()); 25869afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 25969afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // skew with same size 26069afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 26169afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setSkew(SkIntToScalar(15), SkIntToScalar(15)); 26246d3d39e65e0b3ea2ad7c91c176ccafb4df0fa24jvanverth@google.com REPORTER_ASSERT(reporter, !mat.isSimilarity()); 26369afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 26469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // skew with different size 26569afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 26669afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setSkew(SkIntToScalar(15), SkIntToScalar(20)); 26746d3d39e65e0b3ea2ad7c91c176ccafb4df0fa24jvanverth@google.com REPORTER_ASSERT(reporter, !mat.isSimilarity()); 26869afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 26969afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // skew with same size at a pivot point 27069afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 27169afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setSkew(SkIntToScalar(15), SkIntToScalar(15), 27269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com SkIntToScalar(2), SkIntToScalar(2)); 27346d3d39e65e0b3ea2ad7c91c176ccafb4df0fa24jvanverth@google.com REPORTER_ASSERT(reporter, !mat.isSimilarity()); 27469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 27569afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // skew with different size at a pivot point 27669afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 27769afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setSkew(SkIntToScalar(15), SkIntToScalar(20), 27869afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com SkIntToScalar(2), SkIntToScalar(2)); 27946d3d39e65e0b3ea2ad7c91c176ccafb4df0fa24jvanverth@google.com REPORTER_ASSERT(reporter, !mat.isSimilarity()); 28069afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 28169afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // perspective x 28269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 28369afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setPerspX(SkScalarToPersp(SK_Scalar1 / 2)); 28446d3d39e65e0b3ea2ad7c91c176ccafb4df0fa24jvanverth@google.com REPORTER_ASSERT(reporter, !mat.isSimilarity()); 28569afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 28669afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // perspective y 28769afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 28869afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setPerspY(SkScalarToPersp(SK_Scalar1 / 2)); 28946d3d39e65e0b3ea2ad7c91c176ccafb4df0fa24jvanverth@google.com REPORTER_ASSERT(reporter, !mat.isSimilarity()); 29069afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 2914bd2bdbf04f21237337616aa931e34d7c8991edcdjsollen@google.com#ifdef SK_SCALAR_IS_FLOAT 29269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com /* We bypass the following tests for SK_SCALAR_IS_FIXED build. 29369afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com * The long discussion can be found in this issue: 29469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com * http://codereview.appspot.com/5999050/ 29569afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com * In short, we haven't found a perfect way to fix the precision 29669afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com * issue, i.e. the way we use tolerance in isSimilarityTransformation 29769afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com * is incorrect. The situation becomes worse in fixed build, so 29869afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com * we disabled rotation related tests for fixed build. 29969afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com */ 30069afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 30169afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // rotate 30269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com for (int angle = 0; angle < 360; ++angle) { 30369afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 30469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setRotate(SkIntToScalar(angle)); 30546d3d39e65e0b3ea2ad7c91c176ccafb4df0fa24jvanverth@google.com REPORTER_ASSERT(reporter, mat.isSimilarity()); 30669afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com } 30769afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 30869afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // see if there are any accumulated precision issues 30969afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 31069afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com for (int i = 1; i < 360; i++) { 31169afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.postRotate(SkIntToScalar(1)); 31269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com } 31346d3d39e65e0b3ea2ad7c91c176ccafb4df0fa24jvanverth@google.com REPORTER_ASSERT(reporter, mat.isSimilarity()); 31469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 31569afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // rotate + translate 31669afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 31769afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setRotate(SkIntToScalar(30)); 31869afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.postTranslate(SkIntToScalar(10), SkIntToScalar(20)); 31946d3d39e65e0b3ea2ad7c91c176ccafb4df0fa24jvanverth@google.com REPORTER_ASSERT(reporter, mat.isSimilarity()); 32069afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 32169afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // rotate + uniform scale 32269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 32369afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setRotate(SkIntToScalar(30)); 32469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.postScale(SkIntToScalar(2), SkIntToScalar(2)); 32546d3d39e65e0b3ea2ad7c91c176ccafb4df0fa24jvanverth@google.com REPORTER_ASSERT(reporter, mat.isSimilarity()); 32669afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 32769afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // rotate + non-uniform scale 32869afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 32969afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setRotate(SkIntToScalar(30)); 33069afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.postScale(SkIntToScalar(3), SkIntToScalar(2)); 33146d3d39e65e0b3ea2ad7c91c176ccafb4df0fa24jvanverth@google.com REPORTER_ASSERT(reporter, !mat.isSimilarity()); 33269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com#endif 33369afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 33469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // all zero 33569afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setAll(0, 0, 0, 0, 0, 0, 0, 0, 0); 33646d3d39e65e0b3ea2ad7c91c176ccafb4df0fa24jvanverth@google.com REPORTER_ASSERT(reporter, !mat.isSimilarity()); 33769afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 33869afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // all zero except perspective 33969afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setAll(0, 0, 0, 0, 0, 0, 0, 0, SK_Scalar1); 34046d3d39e65e0b3ea2ad7c91c176ccafb4df0fa24jvanverth@google.com REPORTER_ASSERT(reporter, !mat.isSimilarity()); 34169afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 34269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // scales zero, only skews 34369afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setAll(0, SK_Scalar1, 0, 34469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com SK_Scalar1, 0, 0, 34569afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 0, 0, SkMatrix::I()[8]); 34646d3d39e65e0b3ea2ad7c91c176ccafb4df0fa24jvanverth@google.com REPORTER_ASSERT(reporter, mat.isSimilarity()); 34769afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com} 34869afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 34908284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org// For test_matrix_decomposition, below. 35008284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.orgstatic bool scalar_nearly_equal_relative(SkScalar a, SkScalar b, 35108284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org SkScalar tolerance = SK_ScalarNearlyZero) { 35208284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org // from Bruce Dawson 35308284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org SkScalar diff = SkScalarAbs(a - b); 35408284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org if (diff < tolerance) { 35508284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org return true; 35608284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org } 35708284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org 35808284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org a = SkScalarAbs(a); 35908284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org b = SkScalarAbs(b); 36008284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org SkScalar largest = (b > a) ? b : a; 36108284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org 36208284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org if (diff <= largest*tolerance) { 36308284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org return true; 36408284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org } 36508284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org 36608284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org return false; 36708284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org} 36808284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org 36908284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.orgstatic void test_matrix_decomposition(skiatest::Reporter* reporter) { 37008284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org SkMatrix mat; 37108284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org SkScalar rotation0, scaleX, scaleY, rotation1; 37208284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org 37308284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org const float kRotation0 = 15.5f; 37408284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org const float kRotation1 = -50.f; 37508284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org const float kScale0 = 5000.f; 37608284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org const float kScale1 = 0.001f; 37708284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org 37808284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org // identity 37908284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.reset(); 38008284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, SkDecomposeUpper2x2(mat, &rotation0, &scaleX, &scaleY, &rotation1)); 38108284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, SkScalarNearlyZero(rotation0)); 38208284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, SkScalarNearlyEqual(scaleX, SK_Scalar1)); 38308284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, SkScalarNearlyEqual(scaleY, SK_Scalar1)); 38408284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, SkScalarNearlyZero(rotation1)); 38508284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org // make sure it doesn't crash if we pass in NULLs 38608284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, SkDecomposeUpper2x2(mat, NULL, NULL, NULL, NULL)); 38708284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org 38808284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org // rotation only 38908284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.setRotate(kRotation0); 39008284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, SkDecomposeUpper2x2(mat, &rotation0, &scaleX, &scaleY, &rotation1)); 39108284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, SkScalarNearlyEqual(rotation0, SkDegreesToRadians(kRotation0))); 39208284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, SkScalarNearlyEqual(scaleX, SK_Scalar1)); 39308284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, SkScalarNearlyEqual(scaleY, SK_Scalar1)); 39408284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, SkScalarNearlyZero(rotation1)); 39508284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org 39608284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org // uniform scale only 39708284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.setScale(kScale0, kScale0); 39808284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, SkDecomposeUpper2x2(mat, &rotation0, &scaleX, &scaleY, &rotation1)); 39908284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, SkScalarNearlyZero(rotation0)); 40008284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, SkScalarNearlyEqual(scaleX, kScale0)); 40108284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, SkScalarNearlyEqual(scaleY, kScale0)); 40208284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, SkScalarNearlyZero(rotation1)); 40308284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org 40408284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org // anisotropic scale only 40508284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.setScale(kScale1, kScale0); 40608284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, SkDecomposeUpper2x2(mat, &rotation0, &scaleX, &scaleY, &rotation1)); 40708284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, SkScalarNearlyZero(rotation0)); 40808284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, SkScalarNearlyEqual(scaleX, kScale1)); 40908284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, SkScalarNearlyEqual(scaleY, kScale0)); 41008284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, SkScalarNearlyZero(rotation1)); 41108284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org 41208284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org // rotation then uniform scale 41308284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.setRotate(kRotation1); 41408284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.postScale(kScale0, kScale0); 41508284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, SkDecomposeUpper2x2(mat, &rotation0, &scaleX, &scaleY, &rotation1)); 41608284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, SkScalarNearlyEqual(rotation0, SkDegreesToRadians(kRotation1))); 41708284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, SkScalarNearlyEqual(scaleX, kScale0)); 41808284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, SkScalarNearlyEqual(scaleY, kScale0)); 41908284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, SkScalarNearlyZero(rotation1)); 42008284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org 42108284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org // uniform scale then rotation 42208284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.setScale(kScale0, kScale0); 42308284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.postRotate(kRotation1); 42408284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, SkDecomposeUpper2x2(mat, &rotation0, &scaleX, &scaleY, &rotation1)); 42508284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, SkScalarNearlyEqual(rotation0, SkDegreesToRadians(kRotation1))); 42608284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, SkScalarNearlyEqual(scaleX, kScale0)); 42708284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, SkScalarNearlyEqual(scaleY, kScale0)); 42808284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, SkScalarNearlyZero(rotation1)); 42908284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org 43008284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org // rotation then uniform scale+reflection 43108284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.setRotate(kRotation0); 43208284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.postScale(kScale1, -kScale1); 43308284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, SkDecomposeUpper2x2(mat, &rotation0, &scaleX, &scaleY, &rotation1)); 43408284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, SkScalarNearlyEqual(rotation0, SkDegreesToRadians(kRotation0))); 43508284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, SkScalarNearlyEqual(scaleX, kScale1)); 43608284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, SkScalarNearlyEqual(scaleY, -kScale1)); 43708284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, SkScalarNearlyZero(rotation1)); 43808284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org 43908284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org // uniform scale+reflection, then rotate 44008284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.setScale(kScale0, -kScale0); 44108284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.postRotate(kRotation1); 44208284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, SkDecomposeUpper2x2(mat, &rotation0, &scaleX, &scaleY, &rotation1)); 44308284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, SkScalarNearlyEqual(rotation0, SkDegreesToRadians(-kRotation1))); 44408284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, SkScalarNearlyEqual(scaleX, kScale0)); 44508284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, SkScalarNearlyEqual(scaleY, -kScale0)); 44608284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, SkScalarNearlyZero(rotation1)); 44708284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org 44808284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org // rotation then anisotropic scale 44908284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.setRotate(kRotation1); 45008284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.postScale(kScale1, kScale0); 45108284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, SkDecomposeUpper2x2(mat, &rotation0, &scaleX, &scaleY, &rotation1)); 45208284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, SkScalarNearlyEqual(rotation0, SkDegreesToRadians(kRotation1))); 45308284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, SkScalarNearlyEqual(scaleX, kScale1)); 45408284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, SkScalarNearlyEqual(scaleY, kScale0)); 45508284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, SkScalarNearlyZero(rotation1)); 45608284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org 45708284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org // anisotropic scale then rotation 45808284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.setScale(kScale1, kScale0); 45908284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.postRotate(kRotation0); 46008284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, SkDecomposeUpper2x2(mat, &rotation0, &scaleX, &scaleY, &rotation1)); 46108284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, SkScalarNearlyZero(rotation0)); 46208284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, SkScalarNearlyEqual(scaleX, kScale1)); 46308284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, SkScalarNearlyEqual(scaleY, kScale0)); 46408284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, SkScalarNearlyEqual(rotation1, SkDegreesToRadians(kRotation0))); 46508284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org 46608284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org // rotation, uniform scale, then different rotation 46708284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.setRotate(kRotation1); 46808284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.postScale(kScale0, kScale0); 46908284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.postRotate(kRotation0); 47008284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, SkDecomposeUpper2x2(mat, &rotation0, &scaleX, &scaleY, &rotation1)); 47108284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, SkScalarNearlyEqual(rotation0, 47208284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org SkDegreesToRadians(kRotation0 + kRotation1))); 47308284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, SkScalarNearlyEqual(scaleX, kScale0)); 47408284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, SkScalarNearlyEqual(scaleY, kScale0)); 47508284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, SkScalarNearlyZero(rotation1)); 47608284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org 47708284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org // rotation, anisotropic scale, then different rotation 47808284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.setRotate(kRotation0); 47908284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.postScale(kScale1, kScale0); 48008284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.postRotate(kRotation1); 48108284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, SkDecomposeUpper2x2(mat, &rotation0, &scaleX, &scaleY, &rotation1)); 48208284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org // Because of the shear/skew we won't get the same results, so we need to multiply it out. 48308284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org // Generating the matrices requires doing a radian-to-degree calculation, then degree-to-radian 48408284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org // calculation (in setRotate()), which adds error, so this just computes the matrix elements 48508284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org // directly. 48608284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org SkScalar c0; 48708284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org SkScalar s0 = SkScalarSinCos(rotation0, &c0); 48808284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org SkScalar c1; 48908284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org SkScalar s1 = SkScalarSinCos(rotation1, &c1); 49008284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org // We do a relative check here because large scale factors cause problems with an absolute check 49108284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, scalar_nearly_equal_relative(mat[SkMatrix::kMScaleX], 49208284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org scaleX*c0*c1 - scaleY*s0*s1)); 49308284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, scalar_nearly_equal_relative(mat[SkMatrix::kMSkewX], 49408284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org -scaleX*s0*c1 - scaleY*c0*s1)); 49508284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, scalar_nearly_equal_relative(mat[SkMatrix::kMSkewY], 49608284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org scaleX*c0*s1 + scaleY*s0*c1)); 49708284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, scalar_nearly_equal_relative(mat[SkMatrix::kMScaleY], 49808284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org -scaleX*s0*s1 + scaleY*c0*c1)); 49908284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org 50008284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org // try some random matrices 50108284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org SkMWCRandom rand; 50208284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org for (int m = 0; m < 1000; ++m) { 50308284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org SkScalar rot0 = rand.nextRangeF(-SK_ScalarPI, SK_ScalarPI); 50408284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org SkScalar sx = rand.nextRangeF(-3000.f, 3000.f); 50508284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org SkScalar sy = rand.nextRangeF(-3000.f, 3000.f); 50608284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org SkScalar rot1 = rand.nextRangeF(-SK_ScalarPI, SK_ScalarPI); 50708284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.setRotate(rot0); 50808284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.postScale(sx, sy); 50908284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.postRotate(rot1); 51008284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org 51108284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org if (SkDecomposeUpper2x2(mat, &rotation0, &scaleX, &scaleY, &rotation1)) { 51208284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org SkScalar c0; 51308284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org SkScalar s0 = SkScalarSinCos(rotation0, &c0); 51408284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org SkScalar c1; 51508284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org SkScalar s1 = SkScalarSinCos(rotation1, &c1); 51608284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, scalar_nearly_equal_relative(mat[SkMatrix::kMScaleX], 51708284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org scaleX*c0*c1 - scaleY*s0*s1)); 51808284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, scalar_nearly_equal_relative(mat[SkMatrix::kMSkewX], 51908284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org -scaleX*s0*c1 - scaleY*c0*s1)); 52008284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, scalar_nearly_equal_relative(mat[SkMatrix::kMSkewY], 52108284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org scaleX*c0*s1 + scaleY*s0*c1)); 52208284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, scalar_nearly_equal_relative(mat[SkMatrix::kMScaleY], 52308284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org -scaleX*s0*s1 + scaleY*c0*c1)); 52408284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org } else { 52508284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org // if the matrix is degenerate, the basis vectors should be near-parallel or near-zero 52608284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org SkScalar perpdot = mat[SkMatrix::kMScaleX]*mat[SkMatrix::kMScaleY] - 52708284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat[SkMatrix::kMSkewX]*mat[SkMatrix::kMSkewY]; 52808284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, SkScalarNearlyZero(perpdot)); 52908284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org } 53008284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org } 53108284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org 53208284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org // translation shouldn't affect this 53308284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.postTranslate(-1000.f, 1000.f); 53408284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, SkDecomposeUpper2x2(mat, &rotation0, &scaleX, &scaleY, &rotation1)); 53508284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org s0 = SkScalarSinCos(rotation0, &c0); 53608284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org s1 = SkScalarSinCos(rotation1, &c1); 53708284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, scalar_nearly_equal_relative(mat[SkMatrix::kMScaleX], 53808284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org scaleX*c0*c1 - scaleY*s0*s1)); 53908284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, scalar_nearly_equal_relative(mat[SkMatrix::kMSkewX], 54008284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org -scaleX*s0*c1 - scaleY*c0*s1)); 54108284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, scalar_nearly_equal_relative(mat[SkMatrix::kMSkewY], 54208284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org scaleX*c0*s1 + scaleY*s0*c1)); 54308284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, scalar_nearly_equal_relative(mat[SkMatrix::kMScaleY], 54408284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org -scaleX*s0*s1 + scaleY*c0*c1)); 54508284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org 54608284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org // perspective shouldn't affect this 547588f3d3896ce84a00ba0b229a4fe8fff2bf67516jvanverth@google.com mat[SkMatrix::kMPersp0] = 12.f; 548588f3d3896ce84a00ba0b229a4fe8fff2bf67516jvanverth@google.com mat[SkMatrix::kMPersp1] = 4.f; 549588f3d3896ce84a00ba0b229a4fe8fff2bf67516jvanverth@google.com mat[SkMatrix::kMPersp2] = 1872.f; 55008284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, SkDecomposeUpper2x2(mat, &rotation0, &scaleX, &scaleY, &rotation1)); 55108284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org s0 = SkScalarSinCos(rotation0, &c0); 55208284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org s1 = SkScalarSinCos(rotation1, &c1); 55308284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, scalar_nearly_equal_relative(mat[SkMatrix::kMScaleX], 55408284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org scaleX*c0*c1 - scaleY*s0*s1)); 55508284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, scalar_nearly_equal_relative(mat[SkMatrix::kMSkewX], 55608284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org -scaleX*s0*c1 - scaleY*c0*s1)); 55708284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, scalar_nearly_equal_relative(mat[SkMatrix::kMSkewY], 55808284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org scaleX*c0*s1 + scaleY*s0*c1)); 55908284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, scalar_nearly_equal_relative(mat[SkMatrix::kMScaleY], 56008284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org -scaleX*s0*s1 + scaleY*c0*c1)); 56108284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org 56208284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org // rotation, anisotropic scale + reflection, then different rotation 56308284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.setRotate(kRotation0); 56408284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.postScale(-kScale1, kScale0); 56508284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.postRotate(kRotation1); 56608284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, SkDecomposeUpper2x2(mat, &rotation0, &scaleX, &scaleY, &rotation1)); 56708284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org s0 = SkScalarSinCos(rotation0, &c0); 56808284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org s1 = SkScalarSinCos(rotation1, &c1); 56908284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, scalar_nearly_equal_relative(mat[SkMatrix::kMScaleX], 57008284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org scaleX*c0*c1 - scaleY*s0*s1)); 57108284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, scalar_nearly_equal_relative(mat[SkMatrix::kMSkewX], 57208284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org -scaleX*s0*c1 - scaleY*c0*s1)); 57308284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, scalar_nearly_equal_relative(mat[SkMatrix::kMSkewY], 57408284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org scaleX*c0*s1 + scaleY*s0*c1)); 57508284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, scalar_nearly_equal_relative(mat[SkMatrix::kMScaleY], 57608284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org -scaleX*s0*s1 + scaleY*c0*c1)); 57708284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org 57808284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org // degenerate matrices 57908284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org // mostly zero entries 58008284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.reset(); 58108284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat[SkMatrix::kMScaleX] = 0.f; 58208284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, !SkDecomposeUpper2x2(mat, &rotation0, &scaleX, &scaleY, &rotation1)); 58308284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.reset(); 58408284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat[SkMatrix::kMScaleY] = 0.f; 58508284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, !SkDecomposeUpper2x2(mat, &rotation0, &scaleX, &scaleY, &rotation1)); 58608284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.reset(); 58708284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org // linearly dependent entries 58808284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat[SkMatrix::kMScaleX] = 1.f; 58908284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat[SkMatrix::kMSkewX] = 2.f; 59008284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat[SkMatrix::kMSkewY] = 4.f; 59108284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat[SkMatrix::kMScaleY] = 8.f; 59208284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, !SkDecomposeUpper2x2(mat, &rotation0, &scaleX, &scaleY, &rotation1)); 59308284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org} 59408284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org 59542639cddc33746b351bbf07c540711eefffe191acaryclark@google.comstatic void TestMatrix(skiatest::Reporter* reporter) { 596ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com SkMatrix mat, inverse, iden1, iden2; 597ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com 598ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com mat.reset(); 599ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com mat.setTranslate(SK_Scalar1, SK_Scalar1); 6005bfa55b1cd067fa2fe1cbe409573aeaabd98d23creed@google.com REPORTER_ASSERT(reporter, mat.invert(&inverse)); 601ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com iden1.setConcat(mat, inverse); 602ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com REPORTER_ASSERT(reporter, is_identity(iden1)); 603ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com 6042fb96cc5d713451216bd63d5dc8d19abc8550730reed@google.com mat.setScale(SkIntToScalar(2), SkIntToScalar(4)); 6055bfa55b1cd067fa2fe1cbe409573aeaabd98d23creed@google.com REPORTER_ASSERT(reporter, mat.invert(&inverse)); 606ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com iden1.setConcat(mat, inverse); 607ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com REPORTER_ASSERT(reporter, is_identity(iden1)); 6084b7577b042966657c776fd95c67f9363af57945freed@android.com test_flatten(reporter, mat); 609ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com 6102fb96cc5d713451216bd63d5dc8d19abc8550730reed@google.com mat.setScale(SK_Scalar1/2, SkIntToScalar(2)); 6115bfa55b1cd067fa2fe1cbe409573aeaabd98d23creed@google.com REPORTER_ASSERT(reporter, mat.invert(&inverse)); 612ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com iden1.setConcat(mat, inverse); 613ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com REPORTER_ASSERT(reporter, is_identity(iden1)); 6144b7577b042966657c776fd95c67f9363af57945freed@android.com test_flatten(reporter, mat); 615ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com 616ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com mat.setScale(SkIntToScalar(3), SkIntToScalar(5), SkIntToScalar(20), 0); 617ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com mat.postRotate(SkIntToScalar(25)); 618ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com REPORTER_ASSERT(reporter, mat.invert(NULL)); 6195bfa55b1cd067fa2fe1cbe409573aeaabd98d23creed@google.com REPORTER_ASSERT(reporter, mat.invert(&inverse)); 620ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com iden1.setConcat(mat, inverse); 621ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com REPORTER_ASSERT(reporter, is_identity(iden1)); 622ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com iden2.setConcat(inverse, mat); 623ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com REPORTER_ASSERT(reporter, is_identity(iden2)); 6244b7577b042966657c776fd95c67f9363af57945freed@android.com test_flatten(reporter, mat); 6254b7577b042966657c776fd95c67f9363af57945freed@android.com test_flatten(reporter, iden2); 62680e39a77b16f4396eed230efea1d0b2fc8cbfb00reed@android.com 6272fb96cc5d713451216bd63d5dc8d19abc8550730reed@google.com mat.setScale(0, SK_Scalar1); 628e40591d5484762067f976d979c506f126c7779e1reed@google.com REPORTER_ASSERT(reporter, !mat.invert(NULL)); 6292fb96cc5d713451216bd63d5dc8d19abc8550730reed@google.com REPORTER_ASSERT(reporter, !mat.invert(&inverse)); 6302fb96cc5d713451216bd63d5dc8d19abc8550730reed@google.com mat.setScale(SK_Scalar1, 0); 631e40591d5484762067f976d979c506f126c7779e1reed@google.com REPORTER_ASSERT(reporter, !mat.invert(NULL)); 6322fb96cc5d713451216bd63d5dc8d19abc8550730reed@google.com REPORTER_ASSERT(reporter, !mat.invert(&inverse)); 6332fb96cc5d713451216bd63d5dc8d19abc8550730reed@google.com 634ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com // rectStaysRect test 635ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { 636ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com static const struct { 637ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com SkScalar m00, m01, m10, m11; 638ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com bool mStaysRect; 639ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com } 640ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com gRectStaysRectSamples[] = { 641ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { 0, 0, 0, 0, false }, 642ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { 0, 0, 0, SK_Scalar1, false }, 643ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { 0, 0, SK_Scalar1, 0, false }, 644ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { 0, 0, SK_Scalar1, SK_Scalar1, false }, 645ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { 0, SK_Scalar1, 0, 0, false }, 646ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { 0, SK_Scalar1, 0, SK_Scalar1, false }, 647ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { 0, SK_Scalar1, SK_Scalar1, 0, true }, 648ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { 0, SK_Scalar1, SK_Scalar1, SK_Scalar1, false }, 649ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { SK_Scalar1, 0, 0, 0, false }, 650ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { SK_Scalar1, 0, 0, SK_Scalar1, true }, 651ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { SK_Scalar1, 0, SK_Scalar1, 0, false }, 652ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { SK_Scalar1, 0, SK_Scalar1, SK_Scalar1, false }, 653ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { SK_Scalar1, SK_Scalar1, 0, 0, false }, 654ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { SK_Scalar1, SK_Scalar1, 0, SK_Scalar1, false }, 655ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { SK_Scalar1, SK_Scalar1, SK_Scalar1, 0, false }, 656ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { SK_Scalar1, SK_Scalar1, SK_Scalar1, SK_Scalar1, false } 657ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com }; 65880e39a77b16f4396eed230efea1d0b2fc8cbfb00reed@android.com 659ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com for (size_t i = 0; i < SK_ARRAY_COUNT(gRectStaysRectSamples); i++) { 660ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com SkMatrix m; 66180e39a77b16f4396eed230efea1d0b2fc8cbfb00reed@android.com 662ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com m.reset(); 663ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com m.set(SkMatrix::kMScaleX, gRectStaysRectSamples[i].m00); 664ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com m.set(SkMatrix::kMSkewX, gRectStaysRectSamples[i].m01); 665ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com m.set(SkMatrix::kMSkewY, gRectStaysRectSamples[i].m10); 666ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com m.set(SkMatrix::kMScaleY, gRectStaysRectSamples[i].m11); 667ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com REPORTER_ASSERT(reporter, 668ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com m.rectStaysRect() == gRectStaysRectSamples[i].mStaysRect); 669ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com } 670ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com } 6711ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com 672ba7983e55ce15ddcd5534011935178760164fb9dbungeman@google.com mat.reset(); 6731ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com mat.set(SkMatrix::kMScaleX, SkIntToScalar(1)); 6741ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com mat.set(SkMatrix::kMSkewX, SkIntToScalar(2)); 6751ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com mat.set(SkMatrix::kMTransX, SkIntToScalar(3)); 6761ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com mat.set(SkMatrix::kMSkewY, SkIntToScalar(4)); 6771ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com mat.set(SkMatrix::kMScaleY, SkIntToScalar(5)); 6781ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com mat.set(SkMatrix::kMTransY, SkIntToScalar(6)); 6791ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com SkScalar affine[6]; 6801ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com REPORTER_ASSERT(reporter, mat.asAffine(affine)); 6811ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com 6821ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com #define affineEqual(e) affine[SkMatrix::kA##e] == mat.get(SkMatrix::kM##e) 6831ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com REPORTER_ASSERT(reporter, affineEqual(ScaleX)); 6841ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com REPORTER_ASSERT(reporter, affineEqual(SkewY)); 6851ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com REPORTER_ASSERT(reporter, affineEqual(SkewX)); 6861ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com REPORTER_ASSERT(reporter, affineEqual(ScaleY)); 6871ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com REPORTER_ASSERT(reporter, affineEqual(TransX)); 6881ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com REPORTER_ASSERT(reporter, affineEqual(TransY)); 6891ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com #undef affineEqual 6901ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com 69107faed110275048c83a55ae39042da2c9d916108bungeman@google.com mat.set(SkMatrix::kMPersp1, SkScalarToPersp(SK_Scalar1 / 2)); 6921ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com REPORTER_ASSERT(reporter, !mat.asAffine(affine)); 693383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com 6948fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com SkMatrix mat2; 6958fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com mat2.reset(); 6968fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com mat.reset(); 6978fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com SkScalar zero = 0; 6988fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com mat.set(SkMatrix::kMSkewX, -zero); 6998fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com REPORTER_ASSERT(reporter, are_equal(reporter, mat, mat2)); 7008fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com 7018fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com mat2.reset(); 7028fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com mat.reset(); 7038fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com mat.set(SkMatrix::kMSkewX, SK_ScalarNaN); 7048fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com mat2.set(SkMatrix::kMSkewX, SK_ScalarNaN); 7059ed2ecd3ac9b4601fccee8b7232b49bb2f9fed2ebsalomon@google.com // fixed pt doesn't have the property that NaN does not equal itself. 7069ed2ecd3ac9b4601fccee8b7232b49bb2f9fed2ebsalomon@google.com#ifdef SK_SCALAR_IS_FIXED 7079ed2ecd3ac9b4601fccee8b7232b49bb2f9fed2ebsalomon@google.com REPORTER_ASSERT(reporter, are_equal(reporter, mat, mat2)); 7089ed2ecd3ac9b4601fccee8b7232b49bb2f9fed2ebsalomon@google.com#else 7098fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com REPORTER_ASSERT(reporter, !are_equal(reporter, mat, mat2)); 7109ed2ecd3ac9b4601fccee8b7232b49bb2f9fed2ebsalomon@google.com#endif 7118fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com 712383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com test_matrix_max_stretch(reporter); 71346d3d39e65e0b3ea2ad7c91c176ccafb4df0fa24jvanverth@google.com test_matrix_is_similarity(reporter); 71497cd69ca23b27d88e08727366c29c1147eb564dereed@google.com test_matrix_recttorect(reporter); 71508284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org test_matrix_decomposition(reporter); 716ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com} 717ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com 718d8730ea8b25d692c0656f8cf03f02aecfab2a17creed@android.com#include "TestClassDef.h" 719d8730ea8b25d692c0656f8cf03f02aecfab2a17creed@android.comDEFINE_TESTCLASS("Matrix", MatrixTestClass, TestMatrix) 720