MatrixTest.cpp revision 4faa869cdabbdcf4867118b4a1272296baaeeb52
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])) { 29fab44db294846ff05d837b9cf0bf97a073891da7bungeman@google.com SkDebugf("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 1154faa869cdabbdcf4867118b4a1272296baaeeb52commit-bot@chromium.org static const size_t kBufferSize = SkMatrix::kMaxFlattenSize + 100; 1164faa869cdabbdcf4867118b4a1272296baaeeb52commit-bot@chromium.org char buffer[kBufferSize]; 1174faa869cdabbdcf4867118b4a1272296baaeeb52commit-bot@chromium.org size_t size1 = m.writeToMemory(NULL); 1184faa869cdabbdcf4867118b4a1272296baaeeb52commit-bot@chromium.org size_t size2 = m.writeToMemory(buffer); 1194b7577b042966657c776fd95c67f9363af57945freed@android.com REPORTER_ASSERT(reporter, size1 == size2); 1204b7577b042966657c776fd95c67f9363af57945freed@android.com REPORTER_ASSERT(reporter, size1 <= SkMatrix::kMaxFlattenSize); 121d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com 1224b7577b042966657c776fd95c67f9363af57945freed@android.com SkMatrix m2; 1234faa869cdabbdcf4867118b4a1272296baaeeb52commit-bot@chromium.org size_t size3 = m2.readFromMemory(buffer, kBufferSize); 12494e75ee46a569cbcdf61fb7f04ee3a69d3ca0896djsollen@google.com REPORTER_ASSERT(reporter, size1 == size3); 1258fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com REPORTER_ASSERT(reporter, are_equal(reporter, m, m2)); 126d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com 1274faa869cdabbdcf4867118b4a1272296baaeeb52commit-bot@chromium.org char buffer2[kBufferSize]; 12894e75ee46a569cbcdf61fb7f04ee3a69d3ca0896djsollen@google.com size3 = m2.writeToMemory(buffer2); 12994e75ee46a569cbcdf61fb7f04ee3a69d3ca0896djsollen@google.com REPORTER_ASSERT(reporter, size1 == size3); 1304b7577b042966657c776fd95c67f9363af57945freed@android.com REPORTER_ASSERT(reporter, memcmp(buffer, buffer2, size1) == 0); 1314b7577b042966657c776fd95c67f9363af57945freed@android.com} 1324b7577b042966657c776fd95c67f9363af57945freed@android.com 13342639cddc33746b351bbf07c540711eefffe191acaryclark@google.comstatic void test_matrix_max_stretch(skiatest::Reporter* reporter) { 134383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkMatrix identity; 135383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com identity.reset(); 136383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com REPORTER_ASSERT(reporter, SK_Scalar1 == identity.getMaxStretch()); 137383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com 138383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkMatrix scale; 139383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com scale.setScale(SK_Scalar1 * 2, SK_Scalar1 * 4); 140383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com REPORTER_ASSERT(reporter, SK_Scalar1 * 4 == scale.getMaxStretch()); 141383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com 142383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkMatrix rot90Scale; 143383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com rot90Scale.setRotate(90 * SK_Scalar1); 144383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com rot90Scale.postScale(SK_Scalar1 / 4, SK_Scalar1 / 2); 145383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com REPORTER_ASSERT(reporter, SK_Scalar1 / 2 == rot90Scale.getMaxStretch()); 146383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com 147383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkMatrix rotate; 148383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com rotate.setRotate(128 * SK_Scalar1); 149383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com REPORTER_ASSERT(reporter, SkScalarAbs(SK_Scalar1 - rotate.getMaxStretch()) <= SK_ScalarNearlyZero); 150383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com 151383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkMatrix translate; 152383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com translate.setTranslate(10 * SK_Scalar1, -5 * SK_Scalar1); 153383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com REPORTER_ASSERT(reporter, SK_Scalar1 == translate.getMaxStretch()); 154383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com 155383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkMatrix perspX; 156383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com perspX.reset(); 15707faed110275048c83a55ae39042da2c9d916108bungeman@google.com perspX.setPerspX(SkScalarToPersp(SK_Scalar1 / 1000)); 158383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com REPORTER_ASSERT(reporter, -SK_Scalar1 == perspX.getMaxStretch()); 159383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com 160383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkMatrix perspY; 161383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com perspY.reset(); 16207faed110275048c83a55ae39042da2c9d916108bungeman@google.com perspY.setPerspX(SkScalarToPersp(-SK_Scalar1 / 500)); 163383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com REPORTER_ASSERT(reporter, -SK_Scalar1 == perspY.getMaxStretch()); 164383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com 165383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkMatrix baseMats[] = {scale, rot90Scale, rotate, 166383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com translate, perspX, perspY}; 167383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkMatrix mats[2*SK_ARRAY_COUNT(baseMats)]; 16883a444602ec580a0040713eed588c245b4ae0ee9tomhudson@google.com for (size_t i = 0; i < SK_ARRAY_COUNT(baseMats); ++i) { 169383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com mats[i] = baseMats[i]; 170383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com bool invertable = mats[i].invert(&mats[i + SK_ARRAY_COUNT(baseMats)]); 171383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com REPORTER_ASSERT(reporter, invertable); 172383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com } 173e0e7cfe44bb9d66d76120a79e5275c294bacaa22commit-bot@chromium.org SkRandom rand; 174383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com for (int m = 0; m < 1000; ++m) { 175383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkMatrix mat; 176383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com mat.reset(); 177383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com for (int i = 0; i < 4; ++i) { 178383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com int x = rand.nextU() % SK_ARRAY_COUNT(mats); 179383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com mat.postConcat(mats[x]); 180383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com } 181383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkScalar stretch = mat.getMaxStretch(); 182d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com 183383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com if ((stretch < 0) != mat.hasPerspective()) { 184383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com stretch = mat.getMaxStretch(); 185383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com } 186383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com 187383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com REPORTER_ASSERT(reporter, (stretch < 0) == mat.hasPerspective()); 188383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com 189383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com if (mat.hasPerspective()) { 190383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com m -= 1; // try another non-persp matrix 191383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com continue; 192383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com } 193383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com 194383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com // test a bunch of vectors. None should be scaled by more than stretch 195383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com // (modulo some error) and we should find a vector that is scaled by 196383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com // almost stretch. 197383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com static const SkScalar gStretchTol = (105 * SK_Scalar1) / 100; 198383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com static const SkScalar gMaxStretchTol = (97 * SK_Scalar1) / 100; 199383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkScalar max = 0; 200383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkVector vectors[1000]; 20183a444602ec580a0040713eed588c245b4ae0ee9tomhudson@google.com for (size_t i = 0; i < SK_ARRAY_COUNT(vectors); ++i) { 202383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com vectors[i].fX = rand.nextSScalar1(); 203383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com vectors[i].fY = rand.nextSScalar1(); 204383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com if (!vectors[i].normalize()) { 205383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com i -= 1; 206383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com continue; 207383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com } 208383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com } 209383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com mat.mapVectors(vectors, SK_ARRAY_COUNT(vectors)); 21083a444602ec580a0040713eed588c245b4ae0ee9tomhudson@google.com for (size_t i = 0; i < SK_ARRAY_COUNT(vectors); ++i) { 211383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkScalar d = vectors[i].length(); 212383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com REPORTER_ASSERT(reporter, SkScalarDiv(d, stretch) < gStretchTol); 213383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com if (max < d) { 214383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com max = d; 215383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com } 216383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com } 217383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com REPORTER_ASSERT(reporter, SkScalarDiv(max, stretch) >= gMaxStretchTol); 218383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com } 219383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com} 220383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com 22146d3d39e65e0b3ea2ad7c91c176ccafb4df0fa24jvanverth@google.comstatic void test_matrix_is_similarity(skiatest::Reporter* reporter) { 22269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com SkMatrix mat; 22369afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 22469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // identity 22569afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setIdentity(); 22646d3d39e65e0b3ea2ad7c91c176ccafb4df0fa24jvanverth@google.com REPORTER_ASSERT(reporter, mat.isSimilarity()); 22769afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 22869afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // translation only 22969afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 23069afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setTranslate(SkIntToScalar(100), SkIntToScalar(100)); 23146d3d39e65e0b3ea2ad7c91c176ccafb4df0fa24jvanverth@google.com REPORTER_ASSERT(reporter, mat.isSimilarity()); 23269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 23369afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // scale with same size 23469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 23569afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setScale(SkIntToScalar(15), SkIntToScalar(15)); 23646d3d39e65e0b3ea2ad7c91c176ccafb4df0fa24jvanverth@google.com REPORTER_ASSERT(reporter, mat.isSimilarity()); 23769afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 23869afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // scale with one negative 23969afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 24069afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setScale(SkIntToScalar(-15), SkIntToScalar(15)); 24146d3d39e65e0b3ea2ad7c91c176ccafb4df0fa24jvanverth@google.com REPORTER_ASSERT(reporter, mat.isSimilarity()); 24269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 24369afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // scale with different size 24469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 24569afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setScale(SkIntToScalar(15), SkIntToScalar(20)); 24646d3d39e65e0b3ea2ad7c91c176ccafb4df0fa24jvanverth@google.com REPORTER_ASSERT(reporter, !mat.isSimilarity()); 24769afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 24869afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // scale with same size at a pivot point 24969afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 25069afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setScale(SkIntToScalar(15), SkIntToScalar(15), 25169afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com SkIntToScalar(2), SkIntToScalar(2)); 25246d3d39e65e0b3ea2ad7c91c176ccafb4df0fa24jvanverth@google.com REPORTER_ASSERT(reporter, mat.isSimilarity()); 25369afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 25469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // scale with different size at a pivot point 25569afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 25669afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setScale(SkIntToScalar(15), SkIntToScalar(20), 25769afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com SkIntToScalar(2), SkIntToScalar(2)); 25846d3d39e65e0b3ea2ad7c91c176ccafb4df0fa24jvanverth@google.com REPORTER_ASSERT(reporter, !mat.isSimilarity()); 25969afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 26069afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // skew with same size 26169afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 26269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setSkew(SkIntToScalar(15), SkIntToScalar(15)); 26346d3d39e65e0b3ea2ad7c91c176ccafb4df0fa24jvanverth@google.com REPORTER_ASSERT(reporter, !mat.isSimilarity()); 26469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 26569afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // skew with different size 26669afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 26769afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setSkew(SkIntToScalar(15), SkIntToScalar(20)); 26846d3d39e65e0b3ea2ad7c91c176ccafb4df0fa24jvanverth@google.com REPORTER_ASSERT(reporter, !mat.isSimilarity()); 26969afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 27069afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // skew with same size at a pivot point 27169afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 27269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setSkew(SkIntToScalar(15), SkIntToScalar(15), 27369afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com SkIntToScalar(2), SkIntToScalar(2)); 27446d3d39e65e0b3ea2ad7c91c176ccafb4df0fa24jvanverth@google.com REPORTER_ASSERT(reporter, !mat.isSimilarity()); 27569afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 27669afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // skew with different size at a pivot point 27769afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 27869afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setSkew(SkIntToScalar(15), SkIntToScalar(20), 27969afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com SkIntToScalar(2), SkIntToScalar(2)); 28046d3d39e65e0b3ea2ad7c91c176ccafb4df0fa24jvanverth@google.com REPORTER_ASSERT(reporter, !mat.isSimilarity()); 28169afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 28269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // perspective x 28369afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 28469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setPerspX(SkScalarToPersp(SK_Scalar1 / 2)); 28546d3d39e65e0b3ea2ad7c91c176ccafb4df0fa24jvanverth@google.com REPORTER_ASSERT(reporter, !mat.isSimilarity()); 28669afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 28769afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // perspective y 28869afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 28969afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setPerspY(SkScalarToPersp(SK_Scalar1 / 2)); 29046d3d39e65e0b3ea2ad7c91c176ccafb4df0fa24jvanverth@google.com REPORTER_ASSERT(reporter, !mat.isSimilarity()); 29169afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 2924bd2bdbf04f21237337616aa931e34d7c8991edcdjsollen@google.com#ifdef SK_SCALAR_IS_FLOAT 29369afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com /* We bypass the following tests for SK_SCALAR_IS_FIXED build. 29469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com * The long discussion can be found in this issue: 29569afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com * http://codereview.appspot.com/5999050/ 29669afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com * In short, we haven't found a perfect way to fix the precision 29769afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com * issue, i.e. the way we use tolerance in isSimilarityTransformation 29869afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com * is incorrect. The situation becomes worse in fixed build, so 29969afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com * we disabled rotation related tests for fixed build. 30069afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com */ 30169afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 30269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // rotate 30369afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com for (int angle = 0; angle < 360; ++angle) { 30469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 30569afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setRotate(SkIntToScalar(angle)); 30646d3d39e65e0b3ea2ad7c91c176ccafb4df0fa24jvanverth@google.com REPORTER_ASSERT(reporter, mat.isSimilarity()); 30769afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com } 30869afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 30969afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // see if there are any accumulated precision issues 31069afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 31169afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com for (int i = 1; i < 360; i++) { 31269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.postRotate(SkIntToScalar(1)); 31369afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com } 31446d3d39e65e0b3ea2ad7c91c176ccafb4df0fa24jvanverth@google.com REPORTER_ASSERT(reporter, mat.isSimilarity()); 31569afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 31669afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // rotate + translate 31769afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 31869afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setRotate(SkIntToScalar(30)); 31969afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.postTranslate(SkIntToScalar(10), SkIntToScalar(20)); 32046d3d39e65e0b3ea2ad7c91c176ccafb4df0fa24jvanverth@google.com REPORTER_ASSERT(reporter, mat.isSimilarity()); 32169afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 32269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // rotate + uniform scale 32369afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 32469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setRotate(SkIntToScalar(30)); 32569afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.postScale(SkIntToScalar(2), SkIntToScalar(2)); 32646d3d39e65e0b3ea2ad7c91c176ccafb4df0fa24jvanverth@google.com REPORTER_ASSERT(reporter, mat.isSimilarity()); 32769afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 32869afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // rotate + non-uniform scale 32969afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 33069afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setRotate(SkIntToScalar(30)); 33169afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.postScale(SkIntToScalar(3), SkIntToScalar(2)); 33246d3d39e65e0b3ea2ad7c91c176ccafb4df0fa24jvanverth@google.com REPORTER_ASSERT(reporter, !mat.isSimilarity()); 33369afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com#endif 33469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 33569afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // all zero 33669afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setAll(0, 0, 0, 0, 0, 0, 0, 0, 0); 33746d3d39e65e0b3ea2ad7c91c176ccafb4df0fa24jvanverth@google.com REPORTER_ASSERT(reporter, !mat.isSimilarity()); 33869afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 33969afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // all zero except perspective 34069afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setAll(0, 0, 0, 0, 0, 0, 0, 0, SK_Scalar1); 34146d3d39e65e0b3ea2ad7c91c176ccafb4df0fa24jvanverth@google.com REPORTER_ASSERT(reporter, !mat.isSimilarity()); 34269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 34369afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // scales zero, only skews 34469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setAll(0, SK_Scalar1, 0, 34569afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com SK_Scalar1, 0, 0, 34669afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 0, 0, SkMatrix::I()[8]); 34746d3d39e65e0b3ea2ad7c91c176ccafb4df0fa24jvanverth@google.com REPORTER_ASSERT(reporter, mat.isSimilarity()); 34869afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com} 34969afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 35008284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org// For test_matrix_decomposition, below. 3515c561cb8d8151d38c69128345106cbf225033a1askia.committer@gmail.comstatic bool scalar_nearly_equal_relative(SkScalar a, SkScalar b, 35208284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org SkScalar tolerance = SK_ScalarNearlyZero) { 35308284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org // from Bruce Dawson 3545b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org // absolute check 35508284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org SkScalar diff = SkScalarAbs(a - b); 35608284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org if (diff < tolerance) { 35708284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org return true; 35808284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org } 35908284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org 3605b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org // relative check 36108284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org a = SkScalarAbs(a); 36208284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org b = SkScalarAbs(b); 36308284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org SkScalar largest = (b > a) ? b : a; 36408284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org 36508284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org if (diff <= largest*tolerance) { 36608284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org return true; 36708284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org } 36808284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org 36908284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org return false; 37008284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org} 37108284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org 3725b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.orgstatic bool check_matrix_recomposition(const SkMatrix& mat, 3735b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org const SkPoint& rotation1, 3745b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org const SkPoint& scale, 3755b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org const SkPoint& rotation2) { 3765b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org SkScalar c1 = rotation1.fX; 3775b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org SkScalar s1 = rotation1.fY; 3785b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org SkScalar scaleX = scale.fX; 3795b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org SkScalar scaleY = scale.fY; 3805b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org SkScalar c2 = rotation2.fX; 3815b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org SkScalar s2 = rotation2.fY; 38285092f05c406ed5a0c65ff576816924c1a6b903bskia.committer@gmail.com 3835b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org // We do a relative check here because large scale factors cause problems with an absolute check 3845b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org bool result = scalar_nearly_equal_relative(mat[SkMatrix::kMScaleX], 3855b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org scaleX*c1*c2 - scaleY*s1*s2) && 3865b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org scalar_nearly_equal_relative(mat[SkMatrix::kMSkewX], 3875b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org -scaleX*s1*c2 - scaleY*c1*s2) && 3885b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org scalar_nearly_equal_relative(mat[SkMatrix::kMSkewY], 3895b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org scaleX*c1*s2 + scaleY*s1*c2) && 3905b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org scalar_nearly_equal_relative(mat[SkMatrix::kMScaleY], 3915b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org -scaleX*s1*s2 + scaleY*c1*c2); 3925b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org return result; 3935b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org} 3945b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org 39508284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.orgstatic void test_matrix_decomposition(skiatest::Reporter* reporter) { 39608284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org SkMatrix mat; 3975b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org SkPoint rotation1, scale, rotation2; 39808284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org 39908284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org const float kRotation0 = 15.5f; 40008284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org const float kRotation1 = -50.f; 40108284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org const float kScale0 = 5000.f; 40208284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org const float kScale1 = 0.001f; 40308284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org 40408284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org // identity 40508284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.reset(); 4065b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, SkDecomposeUpper2x2(mat, &rotation1, &scale, &rotation2)); 4075b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, check_matrix_recomposition(mat, rotation1, scale, rotation2)); 40808284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org // make sure it doesn't crash if we pass in NULLs 4095b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, SkDecomposeUpper2x2(mat, NULL, NULL, NULL)); 41008284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org 41108284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org // rotation only 41208284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.setRotate(kRotation0); 4135b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, SkDecomposeUpper2x2(mat, &rotation1, &scale, &rotation2)); 4145b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, check_matrix_recomposition(mat, rotation1, scale, rotation2)); 41508284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org 41608284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org // uniform scale only 41708284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.setScale(kScale0, kScale0); 4185b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, SkDecomposeUpper2x2(mat, &rotation1, &scale, &rotation2)); 4195b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, check_matrix_recomposition(mat, rotation1, scale, rotation2)); 42008284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org 42108284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org // anisotropic scale only 42208284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.setScale(kScale1, kScale0); 4235b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, SkDecomposeUpper2x2(mat, &rotation1, &scale, &rotation2)); 4245b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, check_matrix_recomposition(mat, rotation1, scale, rotation2)); 42508284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org 42608284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org // rotation then uniform scale 42708284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.setRotate(kRotation1); 42808284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.postScale(kScale0, kScale0); 4295b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, SkDecomposeUpper2x2(mat, &rotation1, &scale, &rotation2)); 4305b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, check_matrix_recomposition(mat, rotation1, scale, rotation2)); 43108284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org 43208284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org // uniform scale then rotation 43308284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.setScale(kScale0, kScale0); 43408284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.postRotate(kRotation1); 4355b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, SkDecomposeUpper2x2(mat, &rotation1, &scale, &rotation2)); 4365b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, check_matrix_recomposition(mat, rotation1, scale, rotation2)); 43708284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org 43808284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org // rotation then uniform scale+reflection 43908284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.setRotate(kRotation0); 44008284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.postScale(kScale1, -kScale1); 4415b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, SkDecomposeUpper2x2(mat, &rotation1, &scale, &rotation2)); 4425b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, check_matrix_recomposition(mat, rotation1, scale, rotation2)); 44308284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org 44408284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org // uniform scale+reflection, then rotate 44508284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.setScale(kScale0, -kScale0); 44608284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.postRotate(kRotation1); 4475b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, SkDecomposeUpper2x2(mat, &rotation1, &scale, &rotation2)); 4485b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, check_matrix_recomposition(mat, rotation1, scale, rotation2)); 44908284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org 45008284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org // rotation then anisotropic scale 45108284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.setRotate(kRotation1); 45208284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.postScale(kScale1, kScale0); 4535b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, SkDecomposeUpper2x2(mat, &rotation1, &scale, &rotation2)); 4545b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, check_matrix_recomposition(mat, rotation1, scale, rotation2)); 45508284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org 4565b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org // rotation then anisotropic scale 4575b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org mat.setRotate(90); 4585b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org mat.postScale(kScale1, kScale0); 4595b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, SkDecomposeUpper2x2(mat, &rotation1, &scale, &rotation2)); 4605b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, check_matrix_recomposition(mat, rotation1, scale, rotation2)); 46185092f05c406ed5a0c65ff576816924c1a6b903bskia.committer@gmail.com 46208284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org // anisotropic scale then rotation 46308284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.setScale(kScale1, kScale0); 46408284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.postRotate(kRotation0); 4655b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, SkDecomposeUpper2x2(mat, &rotation1, &scale, &rotation2)); 4665b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, check_matrix_recomposition(mat, rotation1, scale, rotation2)); 46785092f05c406ed5a0c65ff576816924c1a6b903bskia.committer@gmail.com 4685b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org // anisotropic scale then rotation 4695b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org mat.setScale(kScale1, kScale0); 4705b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org mat.postRotate(90); 4715b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, SkDecomposeUpper2x2(mat, &rotation1, &scale, &rotation2)); 4725b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, check_matrix_recomposition(mat, rotation1, scale, rotation2)); 47308284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org 47408284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org // rotation, uniform scale, then different rotation 47508284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.setRotate(kRotation1); 47608284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.postScale(kScale0, kScale0); 47708284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.postRotate(kRotation0); 4785b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, SkDecomposeUpper2x2(mat, &rotation1, &scale, &rotation2)); 4795b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, check_matrix_recomposition(mat, rotation1, scale, rotation2)); 48008284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org 48108284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org // rotation, anisotropic scale, then different rotation 48208284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.setRotate(kRotation0); 48308284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.postScale(kScale1, kScale0); 48408284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.postRotate(kRotation1); 4855b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, SkDecomposeUpper2x2(mat, &rotation1, &scale, &rotation2)); 4865b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, check_matrix_recomposition(mat, rotation1, scale, rotation2)); 48785092f05c406ed5a0c65ff576816924c1a6b903bskia.committer@gmail.com 4885b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org // rotation, anisotropic scale + reflection, then different rotation 4895b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org mat.setRotate(kRotation0); 4905b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org mat.postScale(-kScale1, kScale0); 4915b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org mat.postRotate(kRotation1); 4925b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, SkDecomposeUpper2x2(mat, &rotation1, &scale, &rotation2)); 4935b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, check_matrix_recomposition(mat, rotation1, scale, rotation2)); 49408284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org 49508284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org // try some random matrices 496e0e7cfe44bb9d66d76120a79e5275c294bacaa22commit-bot@chromium.org SkRandom rand; 49708284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org for (int m = 0; m < 1000; ++m) { 4985b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org SkScalar rot0 = rand.nextRangeF(-180, 180); 49908284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org SkScalar sx = rand.nextRangeF(-3000.f, 3000.f); 50008284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org SkScalar sy = rand.nextRangeF(-3000.f, 3000.f); 5015b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org SkScalar rot1 = rand.nextRangeF(-180, 180); 50208284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.setRotate(rot0); 50308284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.postScale(sx, sy); 50408284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.postRotate(rot1); 50508284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org 5065b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org if (SkDecomposeUpper2x2(mat, &rotation1, &scale, &rotation2)) { 5075b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, check_matrix_recomposition(mat, rotation1, scale, rotation2)); 50808284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org } else { 50908284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org // if the matrix is degenerate, the basis vectors should be near-parallel or near-zero 51008284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org SkScalar perpdot = mat[SkMatrix::kMScaleX]*mat[SkMatrix::kMScaleY] - 51108284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat[SkMatrix::kMSkewX]*mat[SkMatrix::kMSkewY]; 51208284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, SkScalarNearlyZero(perpdot)); 51308284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org } 51408284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org } 51508284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org 51608284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org // translation shouldn't affect this 51708284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.postTranslate(-1000.f, 1000.f); 5185b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, SkDecomposeUpper2x2(mat, &rotation1, &scale, &rotation2)); 5195b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, check_matrix_recomposition(mat, rotation1, scale, rotation2)); 52008284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org 52108284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org // perspective shouldn't affect this 522588f3d3896ce84a00ba0b229a4fe8fff2bf67516jvanverth@google.com mat[SkMatrix::kMPersp0] = 12.f; 523588f3d3896ce84a00ba0b229a4fe8fff2bf67516jvanverth@google.com mat[SkMatrix::kMPersp1] = 4.f; 524588f3d3896ce84a00ba0b229a4fe8fff2bf67516jvanverth@google.com mat[SkMatrix::kMPersp2] = 1872.f; 5255b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, SkDecomposeUpper2x2(mat, &rotation1, &scale, &rotation2)); 5265b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, check_matrix_recomposition(mat, rotation1, scale, rotation2)); 52708284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org 52808284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org // degenerate matrices 52908284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org // mostly zero entries 53008284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.reset(); 53108284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat[SkMatrix::kMScaleX] = 0.f; 5325b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, !SkDecomposeUpper2x2(mat, &rotation1, &scale, &rotation2)); 53308284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.reset(); 53408284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat[SkMatrix::kMScaleY] = 0.f; 5355b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, !SkDecomposeUpper2x2(mat, &rotation1, &scale, &rotation2)); 53608284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.reset(); 53708284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org // linearly dependent entries 53808284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat[SkMatrix::kMScaleX] = 1.f; 53908284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat[SkMatrix::kMSkewX] = 2.f; 54008284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat[SkMatrix::kMSkewY] = 4.f; 54108284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat[SkMatrix::kMScaleY] = 8.f; 5425b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, !SkDecomposeUpper2x2(mat, &rotation1, &scale, &rotation2)); 54308284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org} 54408284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org 545259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com// For test_matrix_homogeneous, below. 546259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.comstatic bool scalar_array_nearly_equal_relative(const SkScalar a[], const SkScalar b[], int count) { 547259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com for (int i = 0; i < count; ++i) { 548259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com if (!scalar_nearly_equal_relative(a[i], b[i])) { 549259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com return false; 550259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com } 551259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com } 552259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com return true; 553259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com} 554259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com 555259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com// For test_matrix_homogeneous, below. 556259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com// Maps a single triple in src using m and compares results to those in dst 557259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.comstatic bool naive_homogeneous_mapping(const SkMatrix& m, const SkScalar src[3], 558259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com const SkScalar dst[3]) { 559259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com SkScalar res[3]; 560259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com SkScalar ms[9] = {m[0], m[1], m[2], 561259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com m[3], m[4], m[5], 562259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com m[6], m[7], m[8]}; 563259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com res[0] = src[0] * ms[0] + src[1] * ms[1] + src[2] * ms[2]; 564259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com res[1] = src[0] * ms[3] + src[1] * ms[4] + src[2] * ms[5]; 565259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com res[2] = src[0] * ms[6] + src[1] * ms[7] + src[2] * ms[8]; 566259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com return scalar_array_nearly_equal_relative(res, dst, 3); 567259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com} 568259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com 569259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.comstatic void test_matrix_homogeneous(skiatest::Reporter* reporter) { 570259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com SkMatrix mat; 571259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com 572259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com const float kRotation0 = 15.5f; 573259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com const float kRotation1 = -50.f; 574259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com const float kScale0 = 5000.f; 575259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com 576259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com const int kTripleCount = 1000; 577259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com const int kMatrixCount = 1000; 578e0e7cfe44bb9d66d76120a79e5275c294bacaa22commit-bot@chromium.org SkRandom rand; 579259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com 580259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com SkScalar randTriples[3*kTripleCount]; 581259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com for (int i = 0; i < 3*kTripleCount; ++i) { 582259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com randTriples[i] = rand.nextRangeF(-3000.f, 3000.f); 583259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com } 584259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com 585259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com SkMatrix mats[kMatrixCount]; 586259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com for (int i = 0; i < kMatrixCount; ++i) { 587259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com for (int j = 0; j < 9; ++j) { 588259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com mats[i].set(j, rand.nextRangeF(-3000.f, 3000.f)); 589259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com } 590259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com } 591259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com 592259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com // identity 593259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com { 594259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com mat.reset(); 595259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com SkScalar dst[3*kTripleCount]; 596259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com mat.mapHomogeneousPoints(dst, randTriples, kTripleCount); 597259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com REPORTER_ASSERT(reporter, scalar_array_nearly_equal_relative(randTriples, dst, kTripleCount*3)); 598259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com } 599259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com 600259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com // zero matrix 601259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com { 602259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com mat.setAll(0.f, 0.f, 0.f, 0.f, 0.f, 0.f, 0.f, 0.f, 0.f); 603259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com SkScalar dst[3*kTripleCount]; 604259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com mat.mapHomogeneousPoints(dst, randTriples, kTripleCount); 605259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com SkScalar zeros[3] = {0.f, 0.f, 0.f}; 606259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com for (int i = 0; i < kTripleCount; ++i) { 607259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com REPORTER_ASSERT(reporter, scalar_array_nearly_equal_relative(&dst[i*3], zeros, 3)); 608259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com } 609259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com } 610259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com 611259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com // zero point 612259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com { 613259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com SkScalar zeros[3] = {0.f, 0.f, 0.f}; 614259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com for (int i = 0; i < kMatrixCount; ++i) { 615259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com SkScalar dst[3]; 616259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com mats[i].mapHomogeneousPoints(dst, zeros, 1); 617259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com REPORTER_ASSERT(reporter, scalar_array_nearly_equal_relative(dst, zeros, 3)); 618259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com } 619259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com } 620259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com 621259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com // doesn't crash with null dst, src, count == 0 622259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com { 623259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com mats[0].mapHomogeneousPoints(NULL, NULL, 0); 624259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com } 625259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com 626259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com // uniform scale of point 627259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com { 628259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com mat.setScale(kScale0, kScale0); 629259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com SkScalar dst[3]; 630259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com SkScalar src[3] = {randTriples[0], randTriples[1], 1.f}; 631259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com SkPoint pnt; 632259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com pnt.set(src[0], src[1]); 633259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com mat.mapHomogeneousPoints(dst, src, 1); 634259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com mat.mapPoints(&pnt, &pnt, 1); 635259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com REPORTER_ASSERT(reporter, SkScalarNearlyEqual(dst[0], pnt.fX)); 636259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com REPORTER_ASSERT(reporter, SkScalarNearlyEqual(dst[1], pnt.fY)); 637259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com REPORTER_ASSERT(reporter, SkScalarNearlyEqual(dst[2], SK_Scalar1)); 638259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com } 639259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com 640259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com // rotation of point 641259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com { 642259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com mat.setRotate(kRotation0); 643259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com SkScalar dst[3]; 644259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com SkScalar src[3] = {randTriples[0], randTriples[1], 1.f}; 645259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com SkPoint pnt; 646259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com pnt.set(src[0], src[1]); 647259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com mat.mapHomogeneousPoints(dst, src, 1); 648259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com mat.mapPoints(&pnt, &pnt, 1); 649259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com REPORTER_ASSERT(reporter, SkScalarNearlyEqual(dst[0], pnt.fX)); 650259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com REPORTER_ASSERT(reporter, SkScalarNearlyEqual(dst[1], pnt.fY)); 651259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com REPORTER_ASSERT(reporter, SkScalarNearlyEqual(dst[2], SK_Scalar1)); 652259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com } 653259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com 654259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com // rotation, scale, rotation of point 655259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com { 656259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com mat.setRotate(kRotation1); 657259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com mat.postScale(kScale0, kScale0); 658259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com mat.postRotate(kRotation0); 659259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com SkScalar dst[3]; 660259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com SkScalar src[3] = {randTriples[0], randTriples[1], 1.f}; 661259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com SkPoint pnt; 662259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com pnt.set(src[0], src[1]); 663259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com mat.mapHomogeneousPoints(dst, src, 1); 664259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com mat.mapPoints(&pnt, &pnt, 1); 665259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com REPORTER_ASSERT(reporter, SkScalarNearlyEqual(dst[0], pnt.fX)); 666259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com REPORTER_ASSERT(reporter, SkScalarNearlyEqual(dst[1], pnt.fY)); 667259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com REPORTER_ASSERT(reporter, SkScalarNearlyEqual(dst[2], SK_Scalar1)); 668259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com } 669259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com 670259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com // compare with naive approach 671259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com { 672259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com for (int i = 0; i < kMatrixCount; ++i) { 673259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com for (int j = 0; j < kTripleCount; ++j) { 674259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com SkScalar dst[3]; 675259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com mats[i].mapHomogeneousPoints(dst, &randTriples[j*3], 1); 676259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com REPORTER_ASSERT(reporter, naive_homogeneous_mapping(mats[i], &randTriples[j*3], dst)); 677259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com } 678259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com } 679259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com } 680259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com 681259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com} 682259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com 68342639cddc33746b351bbf07c540711eefffe191acaryclark@google.comstatic void TestMatrix(skiatest::Reporter* reporter) { 684ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com SkMatrix mat, inverse, iden1, iden2; 685ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com 686ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com mat.reset(); 687ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com mat.setTranslate(SK_Scalar1, SK_Scalar1); 6885bfa55b1cd067fa2fe1cbe409573aeaabd98d23creed@google.com REPORTER_ASSERT(reporter, mat.invert(&inverse)); 689ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com iden1.setConcat(mat, inverse); 690ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com REPORTER_ASSERT(reporter, is_identity(iden1)); 691ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com 6922fb96cc5d713451216bd63d5dc8d19abc8550730reed@google.com mat.setScale(SkIntToScalar(2), SkIntToScalar(4)); 6935bfa55b1cd067fa2fe1cbe409573aeaabd98d23creed@google.com REPORTER_ASSERT(reporter, mat.invert(&inverse)); 694ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com iden1.setConcat(mat, inverse); 695ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com REPORTER_ASSERT(reporter, is_identity(iden1)); 6964b7577b042966657c776fd95c67f9363af57945freed@android.com test_flatten(reporter, mat); 697ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com 6982fb96cc5d713451216bd63d5dc8d19abc8550730reed@google.com mat.setScale(SK_Scalar1/2, SkIntToScalar(2)); 6995bfa55b1cd067fa2fe1cbe409573aeaabd98d23creed@google.com REPORTER_ASSERT(reporter, mat.invert(&inverse)); 700ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com iden1.setConcat(mat, inverse); 701ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com REPORTER_ASSERT(reporter, is_identity(iden1)); 7024b7577b042966657c776fd95c67f9363af57945freed@android.com test_flatten(reporter, mat); 703ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com 704ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com mat.setScale(SkIntToScalar(3), SkIntToScalar(5), SkIntToScalar(20), 0); 705ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com mat.postRotate(SkIntToScalar(25)); 706ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com REPORTER_ASSERT(reporter, mat.invert(NULL)); 7075bfa55b1cd067fa2fe1cbe409573aeaabd98d23creed@google.com REPORTER_ASSERT(reporter, mat.invert(&inverse)); 708ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com iden1.setConcat(mat, inverse); 709ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com REPORTER_ASSERT(reporter, is_identity(iden1)); 710ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com iden2.setConcat(inverse, mat); 711ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com REPORTER_ASSERT(reporter, is_identity(iden2)); 7124b7577b042966657c776fd95c67f9363af57945freed@android.com test_flatten(reporter, mat); 7134b7577b042966657c776fd95c67f9363af57945freed@android.com test_flatten(reporter, iden2); 71480e39a77b16f4396eed230efea1d0b2fc8cbfb00reed@android.com 7152fb96cc5d713451216bd63d5dc8d19abc8550730reed@google.com mat.setScale(0, SK_Scalar1); 716e40591d5484762067f976d979c506f126c7779e1reed@google.com REPORTER_ASSERT(reporter, !mat.invert(NULL)); 7172fb96cc5d713451216bd63d5dc8d19abc8550730reed@google.com REPORTER_ASSERT(reporter, !mat.invert(&inverse)); 7182fb96cc5d713451216bd63d5dc8d19abc8550730reed@google.com mat.setScale(SK_Scalar1, 0); 719e40591d5484762067f976d979c506f126c7779e1reed@google.com REPORTER_ASSERT(reporter, !mat.invert(NULL)); 7202fb96cc5d713451216bd63d5dc8d19abc8550730reed@google.com REPORTER_ASSERT(reporter, !mat.invert(&inverse)); 7212fb96cc5d713451216bd63d5dc8d19abc8550730reed@google.com 722ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com // rectStaysRect test 723ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { 724ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com static const struct { 725ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com SkScalar m00, m01, m10, m11; 726ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com bool mStaysRect; 727ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com } 728ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com gRectStaysRectSamples[] = { 729ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { 0, 0, 0, 0, false }, 730ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { 0, 0, 0, SK_Scalar1, false }, 731ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { 0, 0, SK_Scalar1, 0, false }, 732ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { 0, 0, SK_Scalar1, SK_Scalar1, false }, 733ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { 0, SK_Scalar1, 0, 0, false }, 734ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { 0, SK_Scalar1, 0, SK_Scalar1, false }, 735ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { 0, SK_Scalar1, SK_Scalar1, 0, true }, 736ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { 0, SK_Scalar1, SK_Scalar1, SK_Scalar1, false }, 737ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { SK_Scalar1, 0, 0, 0, false }, 738ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { SK_Scalar1, 0, 0, SK_Scalar1, true }, 739ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { SK_Scalar1, 0, SK_Scalar1, 0, false }, 740ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { SK_Scalar1, 0, SK_Scalar1, SK_Scalar1, false }, 741ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { SK_Scalar1, SK_Scalar1, 0, 0, false }, 742ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { SK_Scalar1, SK_Scalar1, 0, SK_Scalar1, false }, 743ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { SK_Scalar1, SK_Scalar1, SK_Scalar1, 0, false }, 744ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { SK_Scalar1, SK_Scalar1, SK_Scalar1, SK_Scalar1, false } 745ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com }; 74680e39a77b16f4396eed230efea1d0b2fc8cbfb00reed@android.com 747ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com for (size_t i = 0; i < SK_ARRAY_COUNT(gRectStaysRectSamples); i++) { 748ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com SkMatrix m; 74980e39a77b16f4396eed230efea1d0b2fc8cbfb00reed@android.com 750ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com m.reset(); 751ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com m.set(SkMatrix::kMScaleX, gRectStaysRectSamples[i].m00); 752ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com m.set(SkMatrix::kMSkewX, gRectStaysRectSamples[i].m01); 753ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com m.set(SkMatrix::kMSkewY, gRectStaysRectSamples[i].m10); 754ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com m.set(SkMatrix::kMScaleY, gRectStaysRectSamples[i].m11); 755ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com REPORTER_ASSERT(reporter, 756ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com m.rectStaysRect() == gRectStaysRectSamples[i].mStaysRect); 757ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com } 758ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com } 7591ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com 760ba7983e55ce15ddcd5534011935178760164fb9dbungeman@google.com mat.reset(); 7611ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com mat.set(SkMatrix::kMScaleX, SkIntToScalar(1)); 7621ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com mat.set(SkMatrix::kMSkewX, SkIntToScalar(2)); 7631ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com mat.set(SkMatrix::kMTransX, SkIntToScalar(3)); 7641ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com mat.set(SkMatrix::kMSkewY, SkIntToScalar(4)); 7651ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com mat.set(SkMatrix::kMScaleY, SkIntToScalar(5)); 7661ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com mat.set(SkMatrix::kMTransY, SkIntToScalar(6)); 7671ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com SkScalar affine[6]; 7681ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com REPORTER_ASSERT(reporter, mat.asAffine(affine)); 7691ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com 7701ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com #define affineEqual(e) affine[SkMatrix::kA##e] == mat.get(SkMatrix::kM##e) 7711ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com REPORTER_ASSERT(reporter, affineEqual(ScaleX)); 7721ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com REPORTER_ASSERT(reporter, affineEqual(SkewY)); 7731ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com REPORTER_ASSERT(reporter, affineEqual(SkewX)); 7741ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com REPORTER_ASSERT(reporter, affineEqual(ScaleY)); 7751ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com REPORTER_ASSERT(reporter, affineEqual(TransX)); 7761ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com REPORTER_ASSERT(reporter, affineEqual(TransY)); 7771ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com #undef affineEqual 7781ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com 77907faed110275048c83a55ae39042da2c9d916108bungeman@google.com mat.set(SkMatrix::kMPersp1, SkScalarToPersp(SK_Scalar1 / 2)); 7801ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com REPORTER_ASSERT(reporter, !mat.asAffine(affine)); 781383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com 7828fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com SkMatrix mat2; 7838fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com mat2.reset(); 7848fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com mat.reset(); 7858fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com SkScalar zero = 0; 7868fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com mat.set(SkMatrix::kMSkewX, -zero); 7878fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com REPORTER_ASSERT(reporter, are_equal(reporter, mat, mat2)); 7888fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com 7898fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com mat2.reset(); 7908fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com mat.reset(); 7918fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com mat.set(SkMatrix::kMSkewX, SK_ScalarNaN); 7928fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com mat2.set(SkMatrix::kMSkewX, SK_ScalarNaN); 7939ed2ecd3ac9b4601fccee8b7232b49bb2f9fed2ebsalomon@google.com // fixed pt doesn't have the property that NaN does not equal itself. 7949ed2ecd3ac9b4601fccee8b7232b49bb2f9fed2ebsalomon@google.com#ifdef SK_SCALAR_IS_FIXED 7959ed2ecd3ac9b4601fccee8b7232b49bb2f9fed2ebsalomon@google.com REPORTER_ASSERT(reporter, are_equal(reporter, mat, mat2)); 7969ed2ecd3ac9b4601fccee8b7232b49bb2f9fed2ebsalomon@google.com#else 7978fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com REPORTER_ASSERT(reporter, !are_equal(reporter, mat, mat2)); 7989ed2ecd3ac9b4601fccee8b7232b49bb2f9fed2ebsalomon@google.com#endif 7998fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com 800383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com test_matrix_max_stretch(reporter); 80146d3d39e65e0b3ea2ad7c91c176ccafb4df0fa24jvanverth@google.com test_matrix_is_similarity(reporter); 80297cd69ca23b27d88e08727366c29c1147eb564dereed@google.com test_matrix_recttorect(reporter); 80308284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org test_matrix_decomposition(reporter); 804259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com test_matrix_homogeneous(reporter); 805ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com} 806ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com 807d8730ea8b25d692c0656f8cf03f02aecfab2a17creed@android.com#include "TestClassDef.h" 808d8730ea8b25d692c0656f8cf03f02aecfab2a17creed@android.comDEFINE_TESTCLASS("Matrix", MatrixTestClass, TestMatrix) 809