MatrixTest.cpp revision 93f03324189f211db95c312b3cb08b435cc5ac34
1ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com 2ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com/* 3ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com * Copyright 2011 Google Inc. 4ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com * 5ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com * Use of this source code is governed by a BSD-style license that can be 6ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com * found in the LICENSE file. 7ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com */ 8ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com#include "Test.h" 9889bd8bd7f604acae0a6303365bc82c06da1e6f3tomhudson@google.com#include "SkMath.h" 10ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com#include "SkMatrix.h" 11383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com#include "SkRandom.h" 12ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com 13ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.comstatic bool nearly_equal_scalar(SkScalar a, SkScalar b) { 142047f00e4698f83499ab91911999a65c21a951c9epoger@google.com // Note that we get more compounded error for multiple operations when 152047f00e4698f83499ab91911999a65c21a951c9epoger@google.com // SK_SCALAR_IS_FIXED. 16ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com#ifdef SK_SCALAR_IS_FLOAT 172047f00e4698f83499ab91911999a65c21a951c9epoger@google.com const SkScalar tolerance = SK_Scalar1 / 200000; 18ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com#else 192047f00e4698f83499ab91911999a65c21a951c9epoger@google.com const SkScalar tolerance = SK_Scalar1 / 1024; 20ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com#endif 21ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com 22ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com return SkScalarAbs(a - b) <= tolerance; 23ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com} 24ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com 25ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.comstatic bool nearly_equal(const SkMatrix& a, const SkMatrix& b) { 26ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com for (int i = 0; i < 9; i++) { 27ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com if (!nearly_equal_scalar(a[i], b[i])) { 28d41344553163085bfcfaf7d5882c6028934f8e3breed@android.com printf("not equal %g %g\n", (float)a[i], (float)b[i]); 29ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com return false; 30ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com } 31ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com } 32ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com return true; 33ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com} 34ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com 358fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.comstatic bool are_equal(skiatest::Reporter* reporter, 368fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com const SkMatrix& a, 378fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com const SkMatrix& b) { 388fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com bool equal = a == b; 398fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com bool cheapEqual = a.cheapEqualTo(b); 408fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com if (equal != cheapEqual) { 418fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com#if SK_SCALAR_IS_FLOAT 4239d4f3a02c21a32b766b13068d5bb65d4c332846bsalomon@google.com if (equal) { 438fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com bool foundZeroSignDiff = false; 448fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com for (int i = 0; i < 9; ++i) { 458fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com float aVal = a.get(i); 468fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com float bVal = b.get(i); 47373ebc634573364c27b1ebd35bb537ef1285cba4bsalomon@google.com int aValI = *SkTCast<int*>(&aVal); 48373ebc634573364c27b1ebd35bb537ef1285cba4bsalomon@google.com int bValI = *SkTCast<int*>(&bVal); 498fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com if (0 == aVal && 0 == bVal && aValI != bValI) { 508fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com foundZeroSignDiff = true; 518fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com } else { 528fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com REPORTER_ASSERT(reporter, aVal == bVal && aValI == aValI); 538fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com } 548fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com } 558fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com REPORTER_ASSERT(reporter, foundZeroSignDiff); 568fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com } else { 578fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com bool foundNaN = false; 588fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com for (int i = 0; i < 9; ++i) { 598fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com float aVal = a.get(i); 608fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com float bVal = b.get(i); 61373ebc634573364c27b1ebd35bb537ef1285cba4bsalomon@google.com int aValI = *SkTCast<int*>(&aVal); 62373ebc634573364c27b1ebd35bb537ef1285cba4bsalomon@google.com int bValI = *SkTCast<int*>(&bVal); 638fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com if (sk_float_isnan(aVal) && aValI == bValI) { 648fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com foundNaN = true; 658fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com } else { 668fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com REPORTER_ASSERT(reporter, aVal == bVal && aValI == bValI); 678fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com } 688fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com } 698fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com REPORTER_ASSERT(reporter, foundNaN); 708fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com } 718fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com#else 728fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com REPORTER_ASSERT(reporter, false); 738fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com#endif 748fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com } 758fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com return equal; 768fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com} 778fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com 78ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.comstatic bool is_identity(const SkMatrix& m) { 79ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com SkMatrix identity; 8080e39a77b16f4396eed230efea1d0b2fc8cbfb00reed@android.com identity.reset(); 81ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com return nearly_equal(m, identity); 82ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com} 83ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com 8497cd69ca23b27d88e08727366c29c1147eb564dereed@google.comstatic void test_matrix_recttorect(skiatest::Reporter* reporter) { 8597cd69ca23b27d88e08727366c29c1147eb564dereed@google.com SkRect src, dst; 8697cd69ca23b27d88e08727366c29c1147eb564dereed@google.com SkMatrix matrix; 87f57c01bdcfdf1c923b9a473974bfe6f8c66eca3eskia.committer@gmail.com 8897cd69ca23b27d88e08727366c29c1147eb564dereed@google.com src.set(0, 0, SK_Scalar1*10, SK_Scalar1*10); 8997cd69ca23b27d88e08727366c29c1147eb564dereed@google.com dst = src; 9097cd69ca23b27d88e08727366c29c1147eb564dereed@google.com matrix.setRectToRect(src, dst, SkMatrix::kFill_ScaleToFit); 9197cd69ca23b27d88e08727366c29c1147eb564dereed@google.com REPORTER_ASSERT(reporter, SkMatrix::kIdentity_Mask == matrix.getType()); 9297cd69ca23b27d88e08727366c29c1147eb564dereed@google.com REPORTER_ASSERT(reporter, matrix.rectStaysRect()); 93f57c01bdcfdf1c923b9a473974bfe6f8c66eca3eskia.committer@gmail.com 9497cd69ca23b27d88e08727366c29c1147eb564dereed@google.com dst.offset(SK_Scalar1, SK_Scalar1); 9597cd69ca23b27d88e08727366c29c1147eb564dereed@google.com matrix.setRectToRect(src, dst, SkMatrix::kFill_ScaleToFit); 9697cd69ca23b27d88e08727366c29c1147eb564dereed@google.com REPORTER_ASSERT(reporter, SkMatrix::kTranslate_Mask == matrix.getType()); 9797cd69ca23b27d88e08727366c29c1147eb564dereed@google.com REPORTER_ASSERT(reporter, matrix.rectStaysRect()); 98f57c01bdcfdf1c923b9a473974bfe6f8c66eca3eskia.committer@gmail.com 9997cd69ca23b27d88e08727366c29c1147eb564dereed@google.com dst.fRight += SK_Scalar1; 10097cd69ca23b27d88e08727366c29c1147eb564dereed@google.com matrix.setRectToRect(src, dst, SkMatrix::kFill_ScaleToFit); 10193f03324189f211db95c312b3cb08b435cc5ac34robertphillips@google.com REPORTER_ASSERT(reporter, 10293f03324189f211db95c312b3cb08b435cc5ac34robertphillips@google.com (SkMatrix::kTranslate_Mask | SkMatrix::kScale_Mask) == matrix.getType()); 10397cd69ca23b27d88e08727366c29c1147eb564dereed@google.com REPORTER_ASSERT(reporter, matrix.rectStaysRect()); 10497cd69ca23b27d88e08727366c29c1147eb564dereed@google.com 10597cd69ca23b27d88e08727366c29c1147eb564dereed@google.com dst = src; 10697cd69ca23b27d88e08727366c29c1147eb564dereed@google.com dst.fRight = src.fRight * 2; 10797cd69ca23b27d88e08727366c29c1147eb564dereed@google.com matrix.setRectToRect(src, dst, SkMatrix::kFill_ScaleToFit); 10897cd69ca23b27d88e08727366c29c1147eb564dereed@google.com REPORTER_ASSERT(reporter, SkMatrix::kScale_Mask == matrix.getType()); 10997cd69ca23b27d88e08727366c29c1147eb564dereed@google.com REPORTER_ASSERT(reporter, matrix.rectStaysRect()); 11097cd69ca23b27d88e08727366c29c1147eb564dereed@google.com} 11197cd69ca23b27d88e08727366c29c1147eb564dereed@google.com 1124b7577b042966657c776fd95c67f9363af57945freed@android.comstatic void test_flatten(skiatest::Reporter* reporter, const SkMatrix& m) { 1134b7577b042966657c776fd95c67f9363af57945freed@android.com // add 100 in case we have a bug, I don't want to kill my stack in the test 1144b7577b042966657c776fd95c67f9363af57945freed@android.com char buffer[SkMatrix::kMaxFlattenSize + 100]; 11594e75ee46a569cbcdf61fb7f04ee3a69d3ca0896djsollen@google.com uint32_t size1 = m.writeToMemory(NULL); 11694e75ee46a569cbcdf61fb7f04ee3a69d3ca0896djsollen@google.com uint32_t size2 = m.writeToMemory(buffer); 1174b7577b042966657c776fd95c67f9363af57945freed@android.com REPORTER_ASSERT(reporter, size1 == size2); 1184b7577b042966657c776fd95c67f9363af57945freed@android.com REPORTER_ASSERT(reporter, size1 <= SkMatrix::kMaxFlattenSize); 119d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com 1204b7577b042966657c776fd95c67f9363af57945freed@android.com SkMatrix m2; 12194e75ee46a569cbcdf61fb7f04ee3a69d3ca0896djsollen@google.com uint32_t size3 = m2.readFromMemory(buffer); 12294e75ee46a569cbcdf61fb7f04ee3a69d3ca0896djsollen@google.com REPORTER_ASSERT(reporter, size1 == size3); 1238fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com REPORTER_ASSERT(reporter, are_equal(reporter, m, m2)); 124d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com 1254b7577b042966657c776fd95c67f9363af57945freed@android.com char buffer2[SkMatrix::kMaxFlattenSize + 100]; 12694e75ee46a569cbcdf61fb7f04ee3a69d3ca0896djsollen@google.com size3 = m2.writeToMemory(buffer2); 12794e75ee46a569cbcdf61fb7f04ee3a69d3ca0896djsollen@google.com REPORTER_ASSERT(reporter, size1 == size3); 1284b7577b042966657c776fd95c67f9363af57945freed@android.com REPORTER_ASSERT(reporter, memcmp(buffer, buffer2, size1) == 0); 1294b7577b042966657c776fd95c67f9363af57945freed@android.com} 1304b7577b042966657c776fd95c67f9363af57945freed@android.com 13142639cddc33746b351bbf07c540711eefffe191acaryclark@google.comstatic void test_matrix_max_stretch(skiatest::Reporter* reporter) { 132383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkMatrix identity; 133383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com identity.reset(); 134383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com REPORTER_ASSERT(reporter, SK_Scalar1 == identity.getMaxStretch()); 135383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com 136383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkMatrix scale; 137383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com scale.setScale(SK_Scalar1 * 2, SK_Scalar1 * 4); 138383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com REPORTER_ASSERT(reporter, SK_Scalar1 * 4 == scale.getMaxStretch()); 139383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com 140383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkMatrix rot90Scale; 141383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com rot90Scale.setRotate(90 * SK_Scalar1); 142383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com rot90Scale.postScale(SK_Scalar1 / 4, SK_Scalar1 / 2); 143383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com REPORTER_ASSERT(reporter, SK_Scalar1 / 2 == rot90Scale.getMaxStretch()); 144383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com 145383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkMatrix rotate; 146383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com rotate.setRotate(128 * SK_Scalar1); 147383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com REPORTER_ASSERT(reporter, SkScalarAbs(SK_Scalar1 - rotate.getMaxStretch()) <= SK_ScalarNearlyZero); 148383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com 149383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkMatrix translate; 150383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com translate.setTranslate(10 * SK_Scalar1, -5 * SK_Scalar1); 151383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com REPORTER_ASSERT(reporter, SK_Scalar1 == translate.getMaxStretch()); 152383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com 153383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkMatrix perspX; 154383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com perspX.reset(); 15507faed110275048c83a55ae39042da2c9d916108bungeman@google.com perspX.setPerspX(SkScalarToPersp(SK_Scalar1 / 1000)); 156383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com REPORTER_ASSERT(reporter, -SK_Scalar1 == perspX.getMaxStretch()); 157383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com 158383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkMatrix perspY; 159383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com perspY.reset(); 16007faed110275048c83a55ae39042da2c9d916108bungeman@google.com perspY.setPerspX(SkScalarToPersp(-SK_Scalar1 / 500)); 161383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com REPORTER_ASSERT(reporter, -SK_Scalar1 == perspY.getMaxStretch()); 162383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com 163383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkMatrix baseMats[] = {scale, rot90Scale, rotate, 164383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com translate, perspX, perspY}; 165383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkMatrix mats[2*SK_ARRAY_COUNT(baseMats)]; 16683a444602ec580a0040713eed588c245b4ae0ee9tomhudson@google.com for (size_t i = 0; i < SK_ARRAY_COUNT(baseMats); ++i) { 167383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com mats[i] = baseMats[i]; 168383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com bool invertable = mats[i].invert(&mats[i + SK_ARRAY_COUNT(baseMats)]); 169383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com REPORTER_ASSERT(reporter, invertable); 170383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com } 171383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkRandom rand; 172383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com for (int m = 0; m < 1000; ++m) { 173383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkMatrix mat; 174383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com mat.reset(); 175383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com for (int i = 0; i < 4; ++i) { 176383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com int x = rand.nextU() % SK_ARRAY_COUNT(mats); 177383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com mat.postConcat(mats[x]); 178383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com } 179383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkScalar stretch = mat.getMaxStretch(); 180d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com 181383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com if ((stretch < 0) != mat.hasPerspective()) { 182383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com stretch = mat.getMaxStretch(); 183383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com } 184383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com 185383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com REPORTER_ASSERT(reporter, (stretch < 0) == mat.hasPerspective()); 186383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com 187383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com if (mat.hasPerspective()) { 188383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com m -= 1; // try another non-persp matrix 189383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com continue; 190383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com } 191383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com 192383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com // test a bunch of vectors. None should be scaled by more than stretch 193383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com // (modulo some error) and we should find a vector that is scaled by 194383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com // almost stretch. 195383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com static const SkScalar gStretchTol = (105 * SK_Scalar1) / 100; 196383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com static const SkScalar gMaxStretchTol = (97 * SK_Scalar1) / 100; 197383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkScalar max = 0; 198383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkVector vectors[1000]; 19983a444602ec580a0040713eed588c245b4ae0ee9tomhudson@google.com for (size_t i = 0; i < SK_ARRAY_COUNT(vectors); ++i) { 200383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com vectors[i].fX = rand.nextSScalar1(); 201383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com vectors[i].fY = rand.nextSScalar1(); 202383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com if (!vectors[i].normalize()) { 203383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com i -= 1; 204383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com continue; 205383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com } 206383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com } 207383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com mat.mapVectors(vectors, SK_ARRAY_COUNT(vectors)); 20883a444602ec580a0040713eed588c245b4ae0ee9tomhudson@google.com for (size_t i = 0; i < SK_ARRAY_COUNT(vectors); ++i) { 209383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkScalar d = vectors[i].length(); 210383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com REPORTER_ASSERT(reporter, SkScalarDiv(d, stretch) < gStretchTol); 211383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com if (max < d) { 212383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com max = d; 213383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com } 214383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com } 215383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com REPORTER_ASSERT(reporter, SkScalarDiv(max, stretch) >= gMaxStretchTol); 216383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com } 217383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com} 218383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com 21969afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com// This function is extracted from src/gpu/SkGpuDevice.cpp, 22069afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com// in order to make sure this function works correctly. 22169afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.comstatic bool isSimilarityTransformation(const SkMatrix& matrix, 22269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com SkScalar tol = SK_ScalarNearlyZero) { 22369afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com if (matrix.isIdentity() || matrix.getType() == SkMatrix::kTranslate_Mask) { 22469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com return true; 22569afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com } 22669afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com if (matrix.hasPerspective()) { 22769afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com return false; 22869afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com } 22969afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 23069afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com SkScalar mx = matrix.get(SkMatrix::kMScaleX); 23169afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com SkScalar sx = matrix.get(SkMatrix::kMSkewX); 23269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com SkScalar my = matrix.get(SkMatrix::kMScaleY); 23369afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com SkScalar sy = matrix.get(SkMatrix::kMSkewY); 23469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 23569afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com if (mx == 0 && sx == 0 && my == 0 && sy == 0) { 23669afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com return false; 23769afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com } 23869afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 23969afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // it has scales or skews, but it could also be rotation, check it out. 24069afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com SkVector vec[2]; 24169afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com vec[0].set(mx, sx); 24269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com vec[1].set(sy, my); 24369afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 24469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com return SkScalarNearlyZero(vec[0].dot(vec[1]), SkScalarSquare(tol)) && 24569afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com SkScalarNearlyEqual(vec[0].lengthSqd(), vec[1].lengthSqd(), 24669afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com SkScalarSquare(tol)); 24769afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com} 24869afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 24942639cddc33746b351bbf07c540711eefffe191acaryclark@google.comstatic void test_matrix_is_similarity_transform(skiatest::Reporter* reporter) { 25069afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com SkMatrix mat; 25169afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 25269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // identity 25369afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setIdentity(); 25469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com REPORTER_ASSERT(reporter, isSimilarityTransformation(mat)); 25569afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 25669afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // translation only 25769afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 25869afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setTranslate(SkIntToScalar(100), SkIntToScalar(100)); 25969afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com REPORTER_ASSERT(reporter, isSimilarityTransformation(mat)); 26069afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 26169afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // scale with same size 26269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 26369afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setScale(SkIntToScalar(15), SkIntToScalar(15)); 26469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com REPORTER_ASSERT(reporter, isSimilarityTransformation(mat)); 26569afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 26669afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // scale with one negative 26769afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 26869afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setScale(SkIntToScalar(-15), SkIntToScalar(15)); 26969afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com REPORTER_ASSERT(reporter, isSimilarityTransformation(mat)); 27069afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 27169afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // scale with different size 27269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 27369afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setScale(SkIntToScalar(15), SkIntToScalar(20)); 27469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com REPORTER_ASSERT(reporter, !isSimilarityTransformation(mat)); 27569afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 27669afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // scale with same size at a pivot point 27769afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 27869afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setScale(SkIntToScalar(15), SkIntToScalar(15), 27969afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com SkIntToScalar(2), SkIntToScalar(2)); 28069afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com REPORTER_ASSERT(reporter, isSimilarityTransformation(mat)); 28169afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 28269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // scale with different size at a pivot point 28369afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 28469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setScale(SkIntToScalar(15), SkIntToScalar(20), 28569afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com SkIntToScalar(2), SkIntToScalar(2)); 28669afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com REPORTER_ASSERT(reporter, !isSimilarityTransformation(mat)); 28769afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 28869afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // skew with same size 28969afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 29069afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setSkew(SkIntToScalar(15), SkIntToScalar(15)); 29169afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com REPORTER_ASSERT(reporter, !isSimilarityTransformation(mat)); 29269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 29369afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // skew with different size 29469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 29569afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setSkew(SkIntToScalar(15), SkIntToScalar(20)); 29669afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com REPORTER_ASSERT(reporter, !isSimilarityTransformation(mat)); 29769afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 29869afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // skew with same size at a pivot point 29969afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 30069afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setSkew(SkIntToScalar(15), SkIntToScalar(15), 30169afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com SkIntToScalar(2), SkIntToScalar(2)); 30269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com REPORTER_ASSERT(reporter, !isSimilarityTransformation(mat)); 30369afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 30469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // skew with different size at a pivot point 30569afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 30669afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setSkew(SkIntToScalar(15), SkIntToScalar(20), 30769afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com SkIntToScalar(2), SkIntToScalar(2)); 30869afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com REPORTER_ASSERT(reporter, !isSimilarityTransformation(mat)); 30969afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 31069afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // perspective x 31169afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 31269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setPerspX(SkScalarToPersp(SK_Scalar1 / 2)); 31369afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com REPORTER_ASSERT(reporter, !isSimilarityTransformation(mat)); 31469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 31569afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // perspective y 31669afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 31769afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setPerspY(SkScalarToPersp(SK_Scalar1 / 2)); 31869afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com REPORTER_ASSERT(reporter, !isSimilarityTransformation(mat)); 31969afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 32069afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com#if SK_SCALAR_IS_FLOAT 32169afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com /* We bypass the following tests for SK_SCALAR_IS_FIXED build. 32269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com * The long discussion can be found in this issue: 32369afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com * http://codereview.appspot.com/5999050/ 32469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com * In short, we haven't found a perfect way to fix the precision 32569afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com * issue, i.e. the way we use tolerance in isSimilarityTransformation 32669afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com * is incorrect. The situation becomes worse in fixed build, so 32769afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com * we disabled rotation related tests for fixed build. 32869afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com */ 32969afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 33069afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // rotate 33169afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com for (int angle = 0; angle < 360; ++angle) { 33269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 33369afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setRotate(SkIntToScalar(angle)); 33469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com REPORTER_ASSERT(reporter, isSimilarityTransformation(mat)); 33569afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com } 33669afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 33769afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // see if there are any accumulated precision issues 33869afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 33969afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com for (int i = 1; i < 360; i++) { 34069afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.postRotate(SkIntToScalar(1)); 34169afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com } 34269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com REPORTER_ASSERT(reporter, isSimilarityTransformation(mat)); 34369afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 34469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // rotate + translate 34569afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 34669afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setRotate(SkIntToScalar(30)); 34769afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.postTranslate(SkIntToScalar(10), SkIntToScalar(20)); 34869afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com REPORTER_ASSERT(reporter, isSimilarityTransformation(mat)); 34969afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 35069afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // rotate + uniform scale 35169afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 35269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setRotate(SkIntToScalar(30)); 35369afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.postScale(SkIntToScalar(2), SkIntToScalar(2)); 35469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com REPORTER_ASSERT(reporter, isSimilarityTransformation(mat)); 35569afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 35669afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // rotate + non-uniform scale 35769afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 35869afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setRotate(SkIntToScalar(30)); 35969afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.postScale(SkIntToScalar(3), SkIntToScalar(2)); 36069afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com REPORTER_ASSERT(reporter, !isSimilarityTransformation(mat)); 36169afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com#endif 36269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 36369afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // all zero 36469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setAll(0, 0, 0, 0, 0, 0, 0, 0, 0); 36569afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com REPORTER_ASSERT(reporter, !isSimilarityTransformation(mat)); 36669afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 36769afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // all zero except perspective 36869afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setAll(0, 0, 0, 0, 0, 0, 0, 0, SK_Scalar1); 36969afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com REPORTER_ASSERT(reporter, !isSimilarityTransformation(mat)); 37069afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 37169afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // scales zero, only skews 37269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setAll(0, SK_Scalar1, 0, 37369afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com SK_Scalar1, 0, 0, 37469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 0, 0, SkMatrix::I()[8]); 37569afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com REPORTER_ASSERT(reporter, isSimilarityTransformation(mat)); 37669afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com} 37769afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 37842639cddc33746b351bbf07c540711eefffe191acaryclark@google.comstatic void TestMatrix(skiatest::Reporter* reporter) { 379ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com SkMatrix mat, inverse, iden1, iden2; 380ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com 381ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com mat.reset(); 382ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com mat.setTranslate(SK_Scalar1, SK_Scalar1); 3835bfa55b1cd067fa2fe1cbe409573aeaabd98d23creed@google.com REPORTER_ASSERT(reporter, mat.invert(&inverse)); 384ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com iden1.setConcat(mat, inverse); 385ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com REPORTER_ASSERT(reporter, is_identity(iden1)); 386ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com 387ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com mat.setScale(SkIntToScalar(2), SkIntToScalar(2)); 3885bfa55b1cd067fa2fe1cbe409573aeaabd98d23creed@google.com REPORTER_ASSERT(reporter, mat.invert(&inverse)); 389ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com iden1.setConcat(mat, inverse); 390ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com REPORTER_ASSERT(reporter, is_identity(iden1)); 3914b7577b042966657c776fd95c67f9363af57945freed@android.com test_flatten(reporter, mat); 392ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com 393ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com mat.setScale(SK_Scalar1/2, SK_Scalar1/2); 3945bfa55b1cd067fa2fe1cbe409573aeaabd98d23creed@google.com REPORTER_ASSERT(reporter, mat.invert(&inverse)); 395ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com iden1.setConcat(mat, inverse); 396ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com REPORTER_ASSERT(reporter, is_identity(iden1)); 3974b7577b042966657c776fd95c67f9363af57945freed@android.com test_flatten(reporter, mat); 398ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com 399ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com mat.setScale(SkIntToScalar(3), SkIntToScalar(5), SkIntToScalar(20), 0); 400ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com mat.postRotate(SkIntToScalar(25)); 401ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com REPORTER_ASSERT(reporter, mat.invert(NULL)); 4025bfa55b1cd067fa2fe1cbe409573aeaabd98d23creed@google.com REPORTER_ASSERT(reporter, mat.invert(&inverse)); 403ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com iden1.setConcat(mat, inverse); 404ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com REPORTER_ASSERT(reporter, is_identity(iden1)); 405ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com iden2.setConcat(inverse, mat); 406ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com REPORTER_ASSERT(reporter, is_identity(iden2)); 4074b7577b042966657c776fd95c67f9363af57945freed@android.com test_flatten(reporter, mat); 4084b7577b042966657c776fd95c67f9363af57945freed@android.com test_flatten(reporter, iden2); 40980e39a77b16f4396eed230efea1d0b2fc8cbfb00reed@android.com 410ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com // rectStaysRect test 411ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { 412ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com static const struct { 413ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com SkScalar m00, m01, m10, m11; 414ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com bool mStaysRect; 415ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com } 416ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com gRectStaysRectSamples[] = { 417ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { 0, 0, 0, 0, false }, 418ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { 0, 0, 0, SK_Scalar1, false }, 419ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { 0, 0, SK_Scalar1, 0, false }, 420ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { 0, 0, SK_Scalar1, SK_Scalar1, false }, 421ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { 0, SK_Scalar1, 0, 0, false }, 422ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { 0, SK_Scalar1, 0, SK_Scalar1, false }, 423ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { 0, SK_Scalar1, SK_Scalar1, 0, true }, 424ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { 0, SK_Scalar1, SK_Scalar1, SK_Scalar1, false }, 425ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { SK_Scalar1, 0, 0, 0, false }, 426ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { SK_Scalar1, 0, 0, SK_Scalar1, true }, 427ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { SK_Scalar1, 0, SK_Scalar1, 0, false }, 428ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { SK_Scalar1, 0, SK_Scalar1, SK_Scalar1, false }, 429ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { SK_Scalar1, SK_Scalar1, 0, 0, false }, 430ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { SK_Scalar1, SK_Scalar1, 0, SK_Scalar1, false }, 431ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { SK_Scalar1, SK_Scalar1, SK_Scalar1, 0, false }, 432ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { SK_Scalar1, SK_Scalar1, SK_Scalar1, SK_Scalar1, false } 433ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com }; 43480e39a77b16f4396eed230efea1d0b2fc8cbfb00reed@android.com 435ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com for (size_t i = 0; i < SK_ARRAY_COUNT(gRectStaysRectSamples); i++) { 436ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com SkMatrix m; 43780e39a77b16f4396eed230efea1d0b2fc8cbfb00reed@android.com 438ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com m.reset(); 439ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com m.set(SkMatrix::kMScaleX, gRectStaysRectSamples[i].m00); 440ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com m.set(SkMatrix::kMSkewX, gRectStaysRectSamples[i].m01); 441ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com m.set(SkMatrix::kMSkewY, gRectStaysRectSamples[i].m10); 442ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com m.set(SkMatrix::kMScaleY, gRectStaysRectSamples[i].m11); 443ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com REPORTER_ASSERT(reporter, 444ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com m.rectStaysRect() == gRectStaysRectSamples[i].mStaysRect); 445ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com } 446ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com } 4471ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com 448ba7983e55ce15ddcd5534011935178760164fb9dbungeman@google.com mat.reset(); 4491ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com mat.set(SkMatrix::kMScaleX, SkIntToScalar(1)); 4501ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com mat.set(SkMatrix::kMSkewX, SkIntToScalar(2)); 4511ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com mat.set(SkMatrix::kMTransX, SkIntToScalar(3)); 4521ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com mat.set(SkMatrix::kMSkewY, SkIntToScalar(4)); 4531ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com mat.set(SkMatrix::kMScaleY, SkIntToScalar(5)); 4541ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com mat.set(SkMatrix::kMTransY, SkIntToScalar(6)); 4551ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com SkScalar affine[6]; 4561ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com REPORTER_ASSERT(reporter, mat.asAffine(affine)); 4571ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com 4581ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com #define affineEqual(e) affine[SkMatrix::kA##e] == mat.get(SkMatrix::kM##e) 4591ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com REPORTER_ASSERT(reporter, affineEqual(ScaleX)); 4601ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com REPORTER_ASSERT(reporter, affineEqual(SkewY)); 4611ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com REPORTER_ASSERT(reporter, affineEqual(SkewX)); 4621ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com REPORTER_ASSERT(reporter, affineEqual(ScaleY)); 4631ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com REPORTER_ASSERT(reporter, affineEqual(TransX)); 4641ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com REPORTER_ASSERT(reporter, affineEqual(TransY)); 4651ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com #undef affineEqual 4661ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com 46707faed110275048c83a55ae39042da2c9d916108bungeman@google.com mat.set(SkMatrix::kMPersp1, SkScalarToPersp(SK_Scalar1 / 2)); 4681ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com REPORTER_ASSERT(reporter, !mat.asAffine(affine)); 469383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com 4708fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com SkMatrix mat2; 4718fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com mat2.reset(); 4728fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com mat.reset(); 4738fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com SkScalar zero = 0; 4748fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com mat.set(SkMatrix::kMSkewX, -zero); 4758fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com REPORTER_ASSERT(reporter, are_equal(reporter, mat, mat2)); 4768fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com 4778fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com mat2.reset(); 4788fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com mat.reset(); 4798fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com mat.set(SkMatrix::kMSkewX, SK_ScalarNaN); 4808fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com mat2.set(SkMatrix::kMSkewX, SK_ScalarNaN); 4819ed2ecd3ac9b4601fccee8b7232b49bb2f9fed2ebsalomon@google.com // fixed pt doesn't have the property that NaN does not equal itself. 4829ed2ecd3ac9b4601fccee8b7232b49bb2f9fed2ebsalomon@google.com#ifdef SK_SCALAR_IS_FIXED 4839ed2ecd3ac9b4601fccee8b7232b49bb2f9fed2ebsalomon@google.com REPORTER_ASSERT(reporter, are_equal(reporter, mat, mat2)); 4849ed2ecd3ac9b4601fccee8b7232b49bb2f9fed2ebsalomon@google.com#else 4858fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com REPORTER_ASSERT(reporter, !are_equal(reporter, mat, mat2)); 4869ed2ecd3ac9b4601fccee8b7232b49bb2f9fed2ebsalomon@google.com#endif 4878fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com 488383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com test_matrix_max_stretch(reporter); 48969afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com test_matrix_is_similarity_transform(reporter); 49097cd69ca23b27d88e08727366c29c1147eb564dereed@google.com test_matrix_recttorect(reporter); 491ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com} 492ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com 493d8730ea8b25d692c0656f8cf03f02aecfab2a17creed@android.com#include "TestClassDef.h" 494d8730ea8b25d692c0656f8cf03f02aecfab2a17creed@android.comDEFINE_TESTCLASS("Matrix", MatrixTestClass, TestMatrix) 495