MatrixTest.cpp revision 94e75ee46a569cbcdf61fb7f04ee3a69d3ca0896
1ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com 2ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com/* 3ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com * Copyright 2011 Google Inc. 4ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com * 5ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com * Use of this source code is governed by a BSD-style license that can be 6ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com * found in the LICENSE file. 7ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com */ 8ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com#include "Test.h" 9889bd8bd7f604acae0a6303365bc82c06da1e6f3tomhudson@google.com#include "SkMath.h" 10ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com#include "SkMatrix.h" 11383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com#include "SkRandom.h" 12ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com 13ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.comstatic bool nearly_equal_scalar(SkScalar a, SkScalar b) { 142047f00e4698f83499ab91911999a65c21a951c9epoger@google.com // Note that we get more compounded error for multiple operations when 152047f00e4698f83499ab91911999a65c21a951c9epoger@google.com // SK_SCALAR_IS_FIXED. 16ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com#ifdef SK_SCALAR_IS_FLOAT 172047f00e4698f83499ab91911999a65c21a951c9epoger@google.com const SkScalar tolerance = SK_Scalar1 / 200000; 18ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com#else 192047f00e4698f83499ab91911999a65c21a951c9epoger@google.com const SkScalar tolerance = SK_Scalar1 / 1024; 20ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com#endif 21ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com 22ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com return SkScalarAbs(a - b) <= tolerance; 23ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com} 24ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com 25ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.comstatic bool nearly_equal(const SkMatrix& a, const SkMatrix& b) { 26ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com for (int i = 0; i < 9; i++) { 27ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com if (!nearly_equal_scalar(a[i], b[i])) { 28d41344553163085bfcfaf7d5882c6028934f8e3breed@android.com printf("not equal %g %g\n", (float)a[i], (float)b[i]); 29ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com return false; 30ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com } 31ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com } 32ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com return true; 33ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com} 34ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com 358fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.comstatic bool are_equal(skiatest::Reporter* reporter, 368fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com const SkMatrix& a, 378fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com const SkMatrix& b) { 388fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com bool equal = a == b; 398fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com bool cheapEqual = a.cheapEqualTo(b); 408fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com if (equal != cheapEqual) { 418fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com#if SK_SCALAR_IS_FLOAT 4239d4f3a02c21a32b766b13068d5bb65d4c332846bsalomon@google.com if (equal) { 438fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com bool foundZeroSignDiff = false; 448fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com for (int i = 0; i < 9; ++i) { 458fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com float aVal = a.get(i); 468fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com float bVal = b.get(i); 478fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com int aValI = *reinterpret_cast<int*>(&aVal); 488fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com int bValI = *reinterpret_cast<int*>(&bVal); 498fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com if (0 == aVal && 0 == bVal && aValI != bValI) { 508fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com foundZeroSignDiff = true; 518fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com } else { 528fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com REPORTER_ASSERT(reporter, aVal == bVal && aValI == aValI); 538fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com } 548fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com } 558fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com REPORTER_ASSERT(reporter, foundZeroSignDiff); 568fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com } else { 578fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com bool foundNaN = false; 588fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com for (int i = 0; i < 9; ++i) { 598fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com float aVal = a.get(i); 608fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com float bVal = b.get(i); 618fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com int aValI = *reinterpret_cast<int*>(&aVal); 628fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com int bValI = *reinterpret_cast<int*>(&bVal); 638fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com if (sk_float_isnan(aVal) && aValI == bValI) { 648fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com foundNaN = true; 658fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com } else { 668fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com REPORTER_ASSERT(reporter, aVal == bVal && aValI == bValI); 678fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com } 688fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com } 698fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com REPORTER_ASSERT(reporter, foundNaN); 708fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com } 718fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com#else 728fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com REPORTER_ASSERT(reporter, false); 738fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com#endif 748fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com } 758fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com return equal; 768fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com} 778fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com 78ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.comstatic bool is_identity(const SkMatrix& m) { 79ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com SkMatrix identity; 8080e39a77b16f4396eed230efea1d0b2fc8cbfb00reed@android.com identity.reset(); 81ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com return nearly_equal(m, identity); 82ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com} 83ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com 844b7577b042966657c776fd95c67f9363af57945freed@android.comstatic void test_flatten(skiatest::Reporter* reporter, const SkMatrix& m) { 854b7577b042966657c776fd95c67f9363af57945freed@android.com // add 100 in case we have a bug, I don't want to kill my stack in the test 864b7577b042966657c776fd95c67f9363af57945freed@android.com char buffer[SkMatrix::kMaxFlattenSize + 100]; 8794e75ee46a569cbcdf61fb7f04ee3a69d3ca0896djsollen@google.com uint32_t size1 = m.writeToMemory(NULL); 8894e75ee46a569cbcdf61fb7f04ee3a69d3ca0896djsollen@google.com uint32_t size2 = m.writeToMemory(buffer); 894b7577b042966657c776fd95c67f9363af57945freed@android.com REPORTER_ASSERT(reporter, size1 == size2); 904b7577b042966657c776fd95c67f9363af57945freed@android.com REPORTER_ASSERT(reporter, size1 <= SkMatrix::kMaxFlattenSize); 914b7577b042966657c776fd95c67f9363af57945freed@android.com 924b7577b042966657c776fd95c67f9363af57945freed@android.com SkMatrix m2; 9394e75ee46a569cbcdf61fb7f04ee3a69d3ca0896djsollen@google.com uint32_t size3 = m2.readFromMemory(buffer); 9494e75ee46a569cbcdf61fb7f04ee3a69d3ca0896djsollen@google.com REPORTER_ASSERT(reporter, size1 == size3); 958fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com REPORTER_ASSERT(reporter, are_equal(reporter, m, m2)); 964b7577b042966657c776fd95c67f9363af57945freed@android.com 974b7577b042966657c776fd95c67f9363af57945freed@android.com char buffer2[SkMatrix::kMaxFlattenSize + 100]; 9894e75ee46a569cbcdf61fb7f04ee3a69d3ca0896djsollen@google.com size3 = m2.writeToMemory(buffer2); 9994e75ee46a569cbcdf61fb7f04ee3a69d3ca0896djsollen@google.com REPORTER_ASSERT(reporter, size1 == size3); 1004b7577b042966657c776fd95c67f9363af57945freed@android.com REPORTER_ASSERT(reporter, memcmp(buffer, buffer2, size1) == 0); 1014b7577b042966657c776fd95c67f9363af57945freed@android.com} 1024b7577b042966657c776fd95c67f9363af57945freed@android.com 10342639cddc33746b351bbf07c540711eefffe191acaryclark@google.comstatic void test_matrix_max_stretch(skiatest::Reporter* reporter) { 104383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkMatrix identity; 105383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com identity.reset(); 106383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com REPORTER_ASSERT(reporter, SK_Scalar1 == identity.getMaxStretch()); 107383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com 108383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkMatrix scale; 109383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com scale.setScale(SK_Scalar1 * 2, SK_Scalar1 * 4); 110383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com REPORTER_ASSERT(reporter, SK_Scalar1 * 4 == scale.getMaxStretch()); 111383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com 112383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkMatrix rot90Scale; 113383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com rot90Scale.setRotate(90 * SK_Scalar1); 114383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com rot90Scale.postScale(SK_Scalar1 / 4, SK_Scalar1 / 2); 115383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com REPORTER_ASSERT(reporter, SK_Scalar1 / 2 == rot90Scale.getMaxStretch()); 116383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com 117383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkMatrix rotate; 118383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com rotate.setRotate(128 * SK_Scalar1); 119383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com REPORTER_ASSERT(reporter, SkScalarAbs(SK_Scalar1 - rotate.getMaxStretch()) <= SK_ScalarNearlyZero); 120383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com 121383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkMatrix translate; 122383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com translate.setTranslate(10 * SK_Scalar1, -5 * SK_Scalar1); 123383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com REPORTER_ASSERT(reporter, SK_Scalar1 == translate.getMaxStretch()); 124383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com 125383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkMatrix perspX; 126383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com perspX.reset(); 12707faed110275048c83a55ae39042da2c9d916108bungeman@google.com perspX.setPerspX(SkScalarToPersp(SK_Scalar1 / 1000)); 128383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com REPORTER_ASSERT(reporter, -SK_Scalar1 == perspX.getMaxStretch()); 129383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com 130383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkMatrix perspY; 131383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com perspY.reset(); 13207faed110275048c83a55ae39042da2c9d916108bungeman@google.com perspY.setPerspX(SkScalarToPersp(-SK_Scalar1 / 500)); 133383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com REPORTER_ASSERT(reporter, -SK_Scalar1 == perspY.getMaxStretch()); 134383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com 135383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkMatrix baseMats[] = {scale, rot90Scale, rotate, 136383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com translate, perspX, perspY}; 137383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkMatrix mats[2*SK_ARRAY_COUNT(baseMats)]; 13883a444602ec580a0040713eed588c245b4ae0ee9tomhudson@google.com for (size_t i = 0; i < SK_ARRAY_COUNT(baseMats); ++i) { 139383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com mats[i] = baseMats[i]; 140383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com bool invertable = mats[i].invert(&mats[i + SK_ARRAY_COUNT(baseMats)]); 141383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com REPORTER_ASSERT(reporter, invertable); 142383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com } 143383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkRandom rand; 144383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com for (int m = 0; m < 1000; ++m) { 145383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkMatrix mat; 146383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com mat.reset(); 147383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com for (int i = 0; i < 4; ++i) { 148383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com int x = rand.nextU() % SK_ARRAY_COUNT(mats); 149383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com mat.postConcat(mats[x]); 150383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com } 151383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkScalar stretch = mat.getMaxStretch(); 152383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com 153383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com if ((stretch < 0) != mat.hasPerspective()) { 154383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com stretch = mat.getMaxStretch(); 155383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com } 156383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com 157383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com REPORTER_ASSERT(reporter, (stretch < 0) == mat.hasPerspective()); 158383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com 159383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com if (mat.hasPerspective()) { 160383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com m -= 1; // try another non-persp matrix 161383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com continue; 162383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com } 163383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com 164383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com // test a bunch of vectors. None should be scaled by more than stretch 165383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com // (modulo some error) and we should find a vector that is scaled by 166383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com // almost stretch. 167383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com static const SkScalar gStretchTol = (105 * SK_Scalar1) / 100; 168383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com static const SkScalar gMaxStretchTol = (97 * SK_Scalar1) / 100; 169383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkScalar max = 0; 170383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkVector vectors[1000]; 17183a444602ec580a0040713eed588c245b4ae0ee9tomhudson@google.com for (size_t i = 0; i < SK_ARRAY_COUNT(vectors); ++i) { 172383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com vectors[i].fX = rand.nextSScalar1(); 173383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com vectors[i].fY = rand.nextSScalar1(); 174383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com if (!vectors[i].normalize()) { 175383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com i -= 1; 176383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com continue; 177383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com } 178383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com } 179383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com mat.mapVectors(vectors, SK_ARRAY_COUNT(vectors)); 18083a444602ec580a0040713eed588c245b4ae0ee9tomhudson@google.com for (size_t i = 0; i < SK_ARRAY_COUNT(vectors); ++i) { 181383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkScalar d = vectors[i].length(); 182383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com REPORTER_ASSERT(reporter, SkScalarDiv(d, stretch) < gStretchTol); 183383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com if (max < d) { 184383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com max = d; 185383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com } 186383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com } 187383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com REPORTER_ASSERT(reporter, SkScalarDiv(max, stretch) >= gMaxStretchTol); 188383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com } 189383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com} 190383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com 19169afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com// This function is extracted from src/gpu/SkGpuDevice.cpp, 19269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com// in order to make sure this function works correctly. 19369afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.comstatic bool isSimilarityTransformation(const SkMatrix& matrix, 19469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com SkScalar tol = SK_ScalarNearlyZero) { 19569afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com if (matrix.isIdentity() || matrix.getType() == SkMatrix::kTranslate_Mask) { 19669afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com return true; 19769afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com } 19869afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com if (matrix.hasPerspective()) { 19969afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com return false; 20069afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com } 20169afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 20269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com SkScalar mx = matrix.get(SkMatrix::kMScaleX); 20369afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com SkScalar sx = matrix.get(SkMatrix::kMSkewX); 20469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com SkScalar my = matrix.get(SkMatrix::kMScaleY); 20569afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com SkScalar sy = matrix.get(SkMatrix::kMSkewY); 20669afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 20769afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com if (mx == 0 && sx == 0 && my == 0 && sy == 0) { 20869afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com return false; 20969afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com } 21069afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 21169afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // it has scales or skews, but it could also be rotation, check it out. 21269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com SkVector vec[2]; 21369afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com vec[0].set(mx, sx); 21469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com vec[1].set(sy, my); 21569afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 21669afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com return SkScalarNearlyZero(vec[0].dot(vec[1]), SkScalarSquare(tol)) && 21769afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com SkScalarNearlyEqual(vec[0].lengthSqd(), vec[1].lengthSqd(), 21869afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com SkScalarSquare(tol)); 21969afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com} 22069afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 22142639cddc33746b351bbf07c540711eefffe191acaryclark@google.comstatic void test_matrix_is_similarity_transform(skiatest::Reporter* reporter) { 22269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com SkMatrix mat; 22369afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 22469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // identity 22569afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setIdentity(); 22669afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com REPORTER_ASSERT(reporter, isSimilarityTransformation(mat)); 22769afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 22869afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // translation only 22969afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 23069afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setTranslate(SkIntToScalar(100), SkIntToScalar(100)); 23169afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com REPORTER_ASSERT(reporter, isSimilarityTransformation(mat)); 23269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 23369afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // scale with same size 23469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 23569afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setScale(SkIntToScalar(15), SkIntToScalar(15)); 23669afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com REPORTER_ASSERT(reporter, isSimilarityTransformation(mat)); 23769afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 23869afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // scale with one negative 23969afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 24069afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setScale(SkIntToScalar(-15), SkIntToScalar(15)); 24169afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com REPORTER_ASSERT(reporter, isSimilarityTransformation(mat)); 24269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 24369afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // scale with different size 24469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 24569afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setScale(SkIntToScalar(15), SkIntToScalar(20)); 24669afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com REPORTER_ASSERT(reporter, !isSimilarityTransformation(mat)); 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)); 25269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com REPORTER_ASSERT(reporter, isSimilarityTransformation(mat)); 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)); 25869afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com REPORTER_ASSERT(reporter, !isSimilarityTransformation(mat)); 25969afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 26069afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // skew with same size 26169afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 26269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setSkew(SkIntToScalar(15), SkIntToScalar(15)); 26369afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com REPORTER_ASSERT(reporter, !isSimilarityTransformation(mat)); 26469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 26569afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // skew with different size 26669afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 26769afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setSkew(SkIntToScalar(15), SkIntToScalar(20)); 26869afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com REPORTER_ASSERT(reporter, !isSimilarityTransformation(mat)); 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)); 27469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com REPORTER_ASSERT(reporter, !isSimilarityTransformation(mat)); 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)); 28069afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com REPORTER_ASSERT(reporter, !isSimilarityTransformation(mat)); 28169afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 28269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // perspective x 28369afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 28469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setPerspX(SkScalarToPersp(SK_Scalar1 / 2)); 28569afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com REPORTER_ASSERT(reporter, !isSimilarityTransformation(mat)); 28669afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 28769afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // perspective y 28869afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 28969afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setPerspY(SkScalarToPersp(SK_Scalar1 / 2)); 29069afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com REPORTER_ASSERT(reporter, !isSimilarityTransformation(mat)); 29169afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 29269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com#if 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)); 30669afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com REPORTER_ASSERT(reporter, isSimilarityTransformation(mat)); 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 } 31469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com REPORTER_ASSERT(reporter, isSimilarityTransformation(mat)); 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)); 32069afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com REPORTER_ASSERT(reporter, isSimilarityTransformation(mat)); 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)); 32669afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com REPORTER_ASSERT(reporter, isSimilarityTransformation(mat)); 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)); 33269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com REPORTER_ASSERT(reporter, !isSimilarityTransformation(mat)); 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); 33769afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com REPORTER_ASSERT(reporter, !isSimilarityTransformation(mat)); 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); 34169afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com REPORTER_ASSERT(reporter, !isSimilarityTransformation(mat)); 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]); 34769afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com REPORTER_ASSERT(reporter, isSimilarityTransformation(mat)); 34869afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com} 34969afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 35042639cddc33746b351bbf07c540711eefffe191acaryclark@google.comstatic void TestMatrix(skiatest::Reporter* reporter) { 351ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com SkMatrix mat, inverse, iden1, iden2; 352ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com 353ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com mat.reset(); 354ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com mat.setTranslate(SK_Scalar1, SK_Scalar1); 3555bfa55b1cd067fa2fe1cbe409573aeaabd98d23creed@google.com REPORTER_ASSERT(reporter, mat.invert(&inverse)); 356ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com iden1.setConcat(mat, inverse); 357ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com REPORTER_ASSERT(reporter, is_identity(iden1)); 358ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com 359ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com mat.setScale(SkIntToScalar(2), SkIntToScalar(2)); 3605bfa55b1cd067fa2fe1cbe409573aeaabd98d23creed@google.com REPORTER_ASSERT(reporter, mat.invert(&inverse)); 361ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com iden1.setConcat(mat, inverse); 362ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com REPORTER_ASSERT(reporter, is_identity(iden1)); 3634b7577b042966657c776fd95c67f9363af57945freed@android.com test_flatten(reporter, mat); 364ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com 365ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com mat.setScale(SK_Scalar1/2, SK_Scalar1/2); 3665bfa55b1cd067fa2fe1cbe409573aeaabd98d23creed@google.com REPORTER_ASSERT(reporter, mat.invert(&inverse)); 367ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com iden1.setConcat(mat, inverse); 368ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com REPORTER_ASSERT(reporter, is_identity(iden1)); 3694b7577b042966657c776fd95c67f9363af57945freed@android.com test_flatten(reporter, mat); 370ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com 371ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com mat.setScale(SkIntToScalar(3), SkIntToScalar(5), SkIntToScalar(20), 0); 372ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com mat.postRotate(SkIntToScalar(25)); 373ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com REPORTER_ASSERT(reporter, mat.invert(NULL)); 3745bfa55b1cd067fa2fe1cbe409573aeaabd98d23creed@google.com REPORTER_ASSERT(reporter, mat.invert(&inverse)); 375ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com iden1.setConcat(mat, inverse); 376ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com REPORTER_ASSERT(reporter, is_identity(iden1)); 377ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com iden2.setConcat(inverse, mat); 378ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com REPORTER_ASSERT(reporter, is_identity(iden2)); 3794b7577b042966657c776fd95c67f9363af57945freed@android.com test_flatten(reporter, mat); 3804b7577b042966657c776fd95c67f9363af57945freed@android.com test_flatten(reporter, iden2); 38180e39a77b16f4396eed230efea1d0b2fc8cbfb00reed@android.com 382ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com // rectStaysRect test 383ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { 384ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com static const struct { 385ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com SkScalar m00, m01, m10, m11; 386ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com bool mStaysRect; 387ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com } 388ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com gRectStaysRectSamples[] = { 389ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { 0, 0, 0, 0, false }, 390ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { 0, 0, 0, SK_Scalar1, false }, 391ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { 0, 0, SK_Scalar1, 0, false }, 392ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { 0, 0, SK_Scalar1, SK_Scalar1, false }, 393ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { 0, SK_Scalar1, 0, 0, false }, 394ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { 0, SK_Scalar1, 0, SK_Scalar1, false }, 395ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { 0, SK_Scalar1, SK_Scalar1, 0, true }, 396ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { 0, SK_Scalar1, SK_Scalar1, SK_Scalar1, false }, 397ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { SK_Scalar1, 0, 0, 0, false }, 398ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { SK_Scalar1, 0, 0, SK_Scalar1, true }, 399ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { SK_Scalar1, 0, SK_Scalar1, 0, false }, 400ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { SK_Scalar1, 0, SK_Scalar1, SK_Scalar1, false }, 401ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { SK_Scalar1, SK_Scalar1, 0, 0, false }, 402ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { SK_Scalar1, SK_Scalar1, 0, SK_Scalar1, false }, 403ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { SK_Scalar1, SK_Scalar1, SK_Scalar1, 0, false }, 404ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { SK_Scalar1, SK_Scalar1, SK_Scalar1, SK_Scalar1, false } 405ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com }; 40680e39a77b16f4396eed230efea1d0b2fc8cbfb00reed@android.com 407ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com for (size_t i = 0; i < SK_ARRAY_COUNT(gRectStaysRectSamples); i++) { 408ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com SkMatrix m; 40980e39a77b16f4396eed230efea1d0b2fc8cbfb00reed@android.com 410ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com m.reset(); 411ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com m.set(SkMatrix::kMScaleX, gRectStaysRectSamples[i].m00); 412ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com m.set(SkMatrix::kMSkewX, gRectStaysRectSamples[i].m01); 413ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com m.set(SkMatrix::kMSkewY, gRectStaysRectSamples[i].m10); 414ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com m.set(SkMatrix::kMScaleY, gRectStaysRectSamples[i].m11); 415ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com REPORTER_ASSERT(reporter, 416ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com m.rectStaysRect() == gRectStaysRectSamples[i].mStaysRect); 417ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com } 418ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com } 4191ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com 420ba7983e55ce15ddcd5534011935178760164fb9dbungeman@google.com mat.reset(); 4211ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com mat.set(SkMatrix::kMScaleX, SkIntToScalar(1)); 4221ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com mat.set(SkMatrix::kMSkewX, SkIntToScalar(2)); 4231ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com mat.set(SkMatrix::kMTransX, SkIntToScalar(3)); 4241ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com mat.set(SkMatrix::kMSkewY, SkIntToScalar(4)); 4251ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com mat.set(SkMatrix::kMScaleY, SkIntToScalar(5)); 4261ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com mat.set(SkMatrix::kMTransY, SkIntToScalar(6)); 4271ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com SkScalar affine[6]; 4281ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com REPORTER_ASSERT(reporter, mat.asAffine(affine)); 4291ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com 4301ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com #define affineEqual(e) affine[SkMatrix::kA##e] == mat.get(SkMatrix::kM##e) 4311ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com REPORTER_ASSERT(reporter, affineEqual(ScaleX)); 4321ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com REPORTER_ASSERT(reporter, affineEqual(SkewY)); 4331ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com REPORTER_ASSERT(reporter, affineEqual(SkewX)); 4341ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com REPORTER_ASSERT(reporter, affineEqual(ScaleY)); 4351ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com REPORTER_ASSERT(reporter, affineEqual(TransX)); 4361ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com REPORTER_ASSERT(reporter, affineEqual(TransY)); 4371ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com #undef affineEqual 4381ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com 43907faed110275048c83a55ae39042da2c9d916108bungeman@google.com mat.set(SkMatrix::kMPersp1, SkScalarToPersp(SK_Scalar1 / 2)); 4401ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com REPORTER_ASSERT(reporter, !mat.asAffine(affine)); 441383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com 4428fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com SkMatrix mat2; 4438fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com mat2.reset(); 4448fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com mat.reset(); 4458fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com SkScalar zero = 0; 4468fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com mat.set(SkMatrix::kMSkewX, -zero); 4478fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com REPORTER_ASSERT(reporter, are_equal(reporter, mat, mat2)); 4488fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com 4498fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com mat2.reset(); 4508fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com mat.reset(); 4518fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com mat.set(SkMatrix::kMSkewX, SK_ScalarNaN); 4528fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com mat2.set(SkMatrix::kMSkewX, SK_ScalarNaN); 4539ed2ecd3ac9b4601fccee8b7232b49bb2f9fed2ebsalomon@google.com // fixed pt doesn't have the property that NaN does not equal itself. 4549ed2ecd3ac9b4601fccee8b7232b49bb2f9fed2ebsalomon@google.com#ifdef SK_SCALAR_IS_FIXED 4559ed2ecd3ac9b4601fccee8b7232b49bb2f9fed2ebsalomon@google.com REPORTER_ASSERT(reporter, are_equal(reporter, mat, mat2)); 4569ed2ecd3ac9b4601fccee8b7232b49bb2f9fed2ebsalomon@google.com#else 4578fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com REPORTER_ASSERT(reporter, !are_equal(reporter, mat, mat2)); 4589ed2ecd3ac9b4601fccee8b7232b49bb2f9fed2ebsalomon@google.com#endif 4598fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com 460383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com test_matrix_max_stretch(reporter); 46169afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com test_matrix_is_similarity_transform(reporter); 462ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com} 463ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com 464d8730ea8b25d692c0656f8cf03f02aecfab2a17creed@android.com#include "TestClassDef.h" 465d8730ea8b25d692c0656f8cf03f02aecfab2a17creed@android.comDEFINE_TESTCLASS("Matrix", MatrixTestClass, TestMatrix) 466