1ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com/* 2ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com * Copyright 2011 Google Inc. 3ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com * 4ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com * Use of this source code is governed by a BSD-style license that can be 5ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com * found in the LICENSE file. 6ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com */ 7e4fafb146e85cdfcf9d5418597b6818aa0754adatfarina@chromium.org 8889bd8bd7f604acae0a6303365bc82c06da1e6f3tomhudson@google.com#include "SkMath.h" 9ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com#include "SkMatrix.h" 1008284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org#include "SkMatrixUtils.h" 11383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com#include "SkRandom.h" 128f6884aab8aecd7657cf3f9cdbc682f0deca29c5tfarina@chromium.org#include "Test.h" 13ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com 14ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.comstatic bool nearly_equal_scalar(SkScalar a, SkScalar b) { 152047f00e4698f83499ab91911999a65c21a951c9epoger@google.com const SkScalar tolerance = SK_Scalar1 / 200000; 16ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com return SkScalarAbs(a - b) <= tolerance; 17ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com} 18ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com 19ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.comstatic bool nearly_equal(const SkMatrix& a, const SkMatrix& b) { 20ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com for (int i = 0; i < 9; i++) { 21ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com if (!nearly_equal_scalar(a[i], b[i])) { 22fab44db294846ff05d837b9cf0bf97a073891da7bungeman@google.com SkDebugf("not equal %g %g\n", (float)a[i], (float)b[i]); 23ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com return false; 24ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com } 25ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com } 26ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com return true; 27ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com} 28ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com 298fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.comstatic bool are_equal(skiatest::Reporter* reporter, 308fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com const SkMatrix& a, 318fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com const SkMatrix& b) { 328fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com bool equal = a == b; 338fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com bool cheapEqual = a.cheapEqualTo(b); 348fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com if (equal != cheapEqual) { 3539d4f3a02c21a32b766b13068d5bb65d4c332846bsalomon@google.com if (equal) { 368fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com bool foundZeroSignDiff = false; 378fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com for (int i = 0; i < 9; ++i) { 388fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com float aVal = a.get(i); 398fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com float bVal = b.get(i); 40373ebc634573364c27b1ebd35bb537ef1285cba4bsalomon@google.com int aValI = *SkTCast<int*>(&aVal); 41373ebc634573364c27b1ebd35bb537ef1285cba4bsalomon@google.com int bValI = *SkTCast<int*>(&bVal); 428fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com if (0 == aVal && 0 == bVal && aValI != bValI) { 438fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com foundZeroSignDiff = true; 448fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com } else { 458fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com REPORTER_ASSERT(reporter, aVal == bVal && aValI == aValI); 468fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com } 478fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com } 488fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com REPORTER_ASSERT(reporter, foundZeroSignDiff); 498fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com } else { 508fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com bool foundNaN = false; 518fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com for (int i = 0; i < 9; ++i) { 528fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com float aVal = a.get(i); 538fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com float bVal = b.get(i); 54373ebc634573364c27b1ebd35bb537ef1285cba4bsalomon@google.com int aValI = *SkTCast<int*>(&aVal); 55373ebc634573364c27b1ebd35bb537ef1285cba4bsalomon@google.com int bValI = *SkTCast<int*>(&bVal); 568fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com if (sk_float_isnan(aVal) && aValI == bValI) { 578fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com foundNaN = true; 588fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com } else { 598fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com REPORTER_ASSERT(reporter, aVal == bVal && aValI == bValI); 608fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com } 618fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com } 628fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com REPORTER_ASSERT(reporter, foundNaN); 638fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com } 648fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com } 658fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com return equal; 668fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com} 678fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com 68ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.comstatic bool is_identity(const SkMatrix& m) { 69ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com SkMatrix identity; 7080e39a77b16f4396eed230efea1d0b2fc8cbfb00reed@android.com identity.reset(); 71ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com return nearly_equal(m, identity); 72ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com} 73ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com 7497cd69ca23b27d88e08727366c29c1147eb564dereed@google.comstatic void test_matrix_recttorect(skiatest::Reporter* reporter) { 7597cd69ca23b27d88e08727366c29c1147eb564dereed@google.com SkRect src, dst; 7697cd69ca23b27d88e08727366c29c1147eb564dereed@google.com SkMatrix matrix; 77f57c01bdcfdf1c923b9a473974bfe6f8c66eca3eskia.committer@gmail.com 7897cd69ca23b27d88e08727366c29c1147eb564dereed@google.com src.set(0, 0, SK_Scalar1*10, SK_Scalar1*10); 7997cd69ca23b27d88e08727366c29c1147eb564dereed@google.com dst = src; 8097cd69ca23b27d88e08727366c29c1147eb564dereed@google.com matrix.setRectToRect(src, dst, SkMatrix::kFill_ScaleToFit); 8197cd69ca23b27d88e08727366c29c1147eb564dereed@google.com REPORTER_ASSERT(reporter, SkMatrix::kIdentity_Mask == matrix.getType()); 8297cd69ca23b27d88e08727366c29c1147eb564dereed@google.com REPORTER_ASSERT(reporter, matrix.rectStaysRect()); 83f57c01bdcfdf1c923b9a473974bfe6f8c66eca3eskia.committer@gmail.com 8497cd69ca23b27d88e08727366c29c1147eb564dereed@google.com dst.offset(SK_Scalar1, SK_Scalar1); 8597cd69ca23b27d88e08727366c29c1147eb564dereed@google.com matrix.setRectToRect(src, dst, SkMatrix::kFill_ScaleToFit); 8697cd69ca23b27d88e08727366c29c1147eb564dereed@google.com REPORTER_ASSERT(reporter, SkMatrix::kTranslate_Mask == matrix.getType()); 8797cd69ca23b27d88e08727366c29c1147eb564dereed@google.com REPORTER_ASSERT(reporter, matrix.rectStaysRect()); 88f57c01bdcfdf1c923b9a473974bfe6f8c66eca3eskia.committer@gmail.com 8997cd69ca23b27d88e08727366c29c1147eb564dereed@google.com dst.fRight += SK_Scalar1; 9097cd69ca23b27d88e08727366c29c1147eb564dereed@google.com matrix.setRectToRect(src, dst, SkMatrix::kFill_ScaleToFit); 91e659c2e820de0b8d12d81247ed4430022ded0a90skia.committer@gmail.com REPORTER_ASSERT(reporter, 9293f03324189f211db95c312b3cb08b435cc5ac34robertphillips@google.com (SkMatrix::kTranslate_Mask | SkMatrix::kScale_Mask) == matrix.getType()); 9397cd69ca23b27d88e08727366c29c1147eb564dereed@google.com REPORTER_ASSERT(reporter, matrix.rectStaysRect()); 9497cd69ca23b27d88e08727366c29c1147eb564dereed@google.com 9597cd69ca23b27d88e08727366c29c1147eb564dereed@google.com dst = src; 9697cd69ca23b27d88e08727366c29c1147eb564dereed@google.com dst.fRight = src.fRight * 2; 9797cd69ca23b27d88e08727366c29c1147eb564dereed@google.com matrix.setRectToRect(src, dst, SkMatrix::kFill_ScaleToFit); 9897cd69ca23b27d88e08727366c29c1147eb564dereed@google.com REPORTER_ASSERT(reporter, SkMatrix::kScale_Mask == matrix.getType()); 9997cd69ca23b27d88e08727366c29c1147eb564dereed@google.com REPORTER_ASSERT(reporter, matrix.rectStaysRect()); 10097cd69ca23b27d88e08727366c29c1147eb564dereed@google.com} 10197cd69ca23b27d88e08727366c29c1147eb564dereed@google.com 1024b7577b042966657c776fd95c67f9363af57945freed@android.comstatic void test_flatten(skiatest::Reporter* reporter, const SkMatrix& m) { 1034b7577b042966657c776fd95c67f9363af57945freed@android.com // add 100 in case we have a bug, I don't want to kill my stack in the test 1044faa869cdabbdcf4867118b4a1272296baaeeb52commit-bot@chromium.org static const size_t kBufferSize = SkMatrix::kMaxFlattenSize + 100; 1054faa869cdabbdcf4867118b4a1272296baaeeb52commit-bot@chromium.org char buffer[kBufferSize]; 1064faa869cdabbdcf4867118b4a1272296baaeeb52commit-bot@chromium.org size_t size1 = m.writeToMemory(NULL); 1074faa869cdabbdcf4867118b4a1272296baaeeb52commit-bot@chromium.org size_t size2 = m.writeToMemory(buffer); 1084b7577b042966657c776fd95c67f9363af57945freed@android.com REPORTER_ASSERT(reporter, size1 == size2); 1094b7577b042966657c776fd95c67f9363af57945freed@android.com REPORTER_ASSERT(reporter, size1 <= SkMatrix::kMaxFlattenSize); 110d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com 1114b7577b042966657c776fd95c67f9363af57945freed@android.com SkMatrix m2; 1124faa869cdabbdcf4867118b4a1272296baaeeb52commit-bot@chromium.org size_t size3 = m2.readFromMemory(buffer, kBufferSize); 11394e75ee46a569cbcdf61fb7f04ee3a69d3ca0896djsollen@google.com REPORTER_ASSERT(reporter, size1 == size3); 1148fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com REPORTER_ASSERT(reporter, are_equal(reporter, m, m2)); 115d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com 1164faa869cdabbdcf4867118b4a1272296baaeeb52commit-bot@chromium.org char buffer2[kBufferSize]; 11794e75ee46a569cbcdf61fb7f04ee3a69d3ca0896djsollen@google.com size3 = m2.writeToMemory(buffer2); 11894e75ee46a569cbcdf61fb7f04ee3a69d3ca0896djsollen@google.com REPORTER_ASSERT(reporter, size1 == size3); 1194b7577b042966657c776fd95c67f9363af57945freed@android.com REPORTER_ASSERT(reporter, memcmp(buffer, buffer2, size1) == 0); 1204b7577b042966657c776fd95c67f9363af57945freed@android.com} 1214b7577b042966657c776fd95c67f9363af57945freed@android.com 1221878651990d7c9da72cf43481432232bbef3550dcommit-bot@chromium.orgstatic void test_matrix_min_max_scale(skiatest::Reporter* reporter) { 123311a3cda9457d50cc7c2a0fc9f153a9ce2c8cb8ecommit-bot@chromium.org SkScalar scales[2]; 124311a3cda9457d50cc7c2a0fc9f153a9ce2c8cb8ecommit-bot@chromium.org bool success; 125311a3cda9457d50cc7c2a0fc9f153a9ce2c8cb8ecommit-bot@chromium.org 126383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkMatrix identity; 127383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com identity.reset(); 1281878651990d7c9da72cf43481432232bbef3550dcommit-bot@chromium.org REPORTER_ASSERT(reporter, SK_Scalar1 == identity.getMinScale()); 1291878651990d7c9da72cf43481432232bbef3550dcommit-bot@chromium.org REPORTER_ASSERT(reporter, SK_Scalar1 == identity.getMaxScale()); 130311a3cda9457d50cc7c2a0fc9f153a9ce2c8cb8ecommit-bot@chromium.org success = identity.getMinMaxScales(scales); 131311a3cda9457d50cc7c2a0fc9f153a9ce2c8cb8ecommit-bot@chromium.org REPORTER_ASSERT(reporter, success && SK_Scalar1 == scales[0] && SK_Scalar1 == scales[1]); 132383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com 133383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkMatrix scale; 134383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com scale.setScale(SK_Scalar1 * 2, SK_Scalar1 * 4); 1351878651990d7c9da72cf43481432232bbef3550dcommit-bot@chromium.org REPORTER_ASSERT(reporter, SK_Scalar1 * 2 == scale.getMinScale()); 1361878651990d7c9da72cf43481432232bbef3550dcommit-bot@chromium.org REPORTER_ASSERT(reporter, SK_Scalar1 * 4 == scale.getMaxScale()); 137311a3cda9457d50cc7c2a0fc9f153a9ce2c8cb8ecommit-bot@chromium.org success = scale.getMinMaxScales(scales); 138311a3cda9457d50cc7c2a0fc9f153a9ce2c8cb8ecommit-bot@chromium.org REPORTER_ASSERT(reporter, success && SK_Scalar1 * 2 == scales[0] && SK_Scalar1 * 4 == scales[1]); 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); 1431878651990d7c9da72cf43481432232bbef3550dcommit-bot@chromium.org REPORTER_ASSERT(reporter, SK_Scalar1 / 4 == rot90Scale.getMinScale()); 1441878651990d7c9da72cf43481432232bbef3550dcommit-bot@chromium.org REPORTER_ASSERT(reporter, SK_Scalar1 / 2 == rot90Scale.getMaxScale()); 145311a3cda9457d50cc7c2a0fc9f153a9ce2c8cb8ecommit-bot@chromium.org success = rot90Scale.getMinMaxScales(scales); 146311a3cda9457d50cc7c2a0fc9f153a9ce2c8cb8ecommit-bot@chromium.org REPORTER_ASSERT(reporter, success && SK_Scalar1 / 4 == scales[0] && SK_Scalar1 / 2 == scales[1]); 147383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com 148383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkMatrix rotate; 149383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com rotate.setRotate(128 * SK_Scalar1); 150311a3cda9457d50cc7c2a0fc9f153a9ce2c8cb8ecommit-bot@chromium.org REPORTER_ASSERT(reporter, SkScalarNearlyEqual(SK_Scalar1, rotate.getMinScale(), SK_ScalarNearlyZero)); 1511878651990d7c9da72cf43481432232bbef3550dcommit-bot@chromium.org REPORTER_ASSERT(reporter, SkScalarNearlyEqual(SK_Scalar1, rotate.getMaxScale(), SK_ScalarNearlyZero)); 152311a3cda9457d50cc7c2a0fc9f153a9ce2c8cb8ecommit-bot@chromium.org success = rotate.getMinMaxScales(scales); 153311a3cda9457d50cc7c2a0fc9f153a9ce2c8cb8ecommit-bot@chromium.org REPORTER_ASSERT(reporter, success); 154311a3cda9457d50cc7c2a0fc9f153a9ce2c8cb8ecommit-bot@chromium.org REPORTER_ASSERT(reporter, SkScalarNearlyEqual(SK_Scalar1, scales[0], SK_ScalarNearlyZero)); 155311a3cda9457d50cc7c2a0fc9f153a9ce2c8cb8ecommit-bot@chromium.org REPORTER_ASSERT(reporter, SkScalarNearlyEqual(SK_Scalar1, scales[1], SK_ScalarNearlyZero)); 156383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com 157383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkMatrix translate; 158383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com translate.setTranslate(10 * SK_Scalar1, -5 * SK_Scalar1); 1591878651990d7c9da72cf43481432232bbef3550dcommit-bot@chromium.org REPORTER_ASSERT(reporter, SK_Scalar1 == translate.getMinScale()); 1601878651990d7c9da72cf43481432232bbef3550dcommit-bot@chromium.org REPORTER_ASSERT(reporter, SK_Scalar1 == translate.getMaxScale()); 161311a3cda9457d50cc7c2a0fc9f153a9ce2c8cb8ecommit-bot@chromium.org success = translate.getMinMaxScales(scales); 162311a3cda9457d50cc7c2a0fc9f153a9ce2c8cb8ecommit-bot@chromium.org REPORTER_ASSERT(reporter, success && SK_Scalar1 == scales[0] && SK_Scalar1 == scales[1]); 163383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com 164383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkMatrix perspX; 165383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com perspX.reset(); 16607faed110275048c83a55ae39042da2c9d916108bungeman@google.com perspX.setPerspX(SkScalarToPersp(SK_Scalar1 / 1000)); 1671878651990d7c9da72cf43481432232bbef3550dcommit-bot@chromium.org REPORTER_ASSERT(reporter, -SK_Scalar1 == perspX.getMinScale()); 1681878651990d7c9da72cf43481432232bbef3550dcommit-bot@chromium.org REPORTER_ASSERT(reporter, -SK_Scalar1 == perspX.getMaxScale()); 169311a3cda9457d50cc7c2a0fc9f153a9ce2c8cb8ecommit-bot@chromium.org // Verify that getMinMaxScales() doesn't update the scales array on failure. 170311a3cda9457d50cc7c2a0fc9f153a9ce2c8cb8ecommit-bot@chromium.org scales[0] = -5; 171311a3cda9457d50cc7c2a0fc9f153a9ce2c8cb8ecommit-bot@chromium.org scales[1] = -5; 172311a3cda9457d50cc7c2a0fc9f153a9ce2c8cb8ecommit-bot@chromium.org success = perspX.getMinMaxScales(scales); 173311a3cda9457d50cc7c2a0fc9f153a9ce2c8cb8ecommit-bot@chromium.org REPORTER_ASSERT(reporter, !success && -5 * SK_Scalar1 == scales[0] && -5 * SK_Scalar1 == scales[1]); 174383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com 175383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkMatrix perspY; 176383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com perspY.reset(); 177cea9abb001b07eaf4340a78db708bfac9e8c68c2commit-bot@chromium.org perspY.setPerspY(SkScalarToPersp(-SK_Scalar1 / 500)); 1781878651990d7c9da72cf43481432232bbef3550dcommit-bot@chromium.org REPORTER_ASSERT(reporter, -SK_Scalar1 == perspY.getMinScale()); 1791878651990d7c9da72cf43481432232bbef3550dcommit-bot@chromium.org REPORTER_ASSERT(reporter, -SK_Scalar1 == perspY.getMaxScale()); 180311a3cda9457d50cc7c2a0fc9f153a9ce2c8cb8ecommit-bot@chromium.org scales[0] = -5; 181311a3cda9457d50cc7c2a0fc9f153a9ce2c8cb8ecommit-bot@chromium.org scales[1] = -5; 182311a3cda9457d50cc7c2a0fc9f153a9ce2c8cb8ecommit-bot@chromium.org success = perspY.getMinMaxScales(scales); 183311a3cda9457d50cc7c2a0fc9f153a9ce2c8cb8ecommit-bot@chromium.org REPORTER_ASSERT(reporter, !success && -5 * SK_Scalar1 == scales[0] && -5 * SK_Scalar1 == scales[1]); 184383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com 185383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkMatrix baseMats[] = {scale, rot90Scale, rotate, 186383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com translate, perspX, perspY}; 187383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkMatrix mats[2*SK_ARRAY_COUNT(baseMats)]; 18883a444602ec580a0040713eed588c245b4ae0ee9tomhudson@google.com for (size_t i = 0; i < SK_ARRAY_COUNT(baseMats); ++i) { 189383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com mats[i] = baseMats[i]; 190383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com bool invertable = mats[i].invert(&mats[i + SK_ARRAY_COUNT(baseMats)]); 191383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com REPORTER_ASSERT(reporter, invertable); 192383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com } 193e0e7cfe44bb9d66d76120a79e5275c294bacaa22commit-bot@chromium.org SkRandom rand; 194383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com for (int m = 0; m < 1000; ++m) { 195383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkMatrix mat; 196383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com mat.reset(); 197383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com for (int i = 0; i < 4; ++i) { 198383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com int x = rand.nextU() % SK_ARRAY_COUNT(mats); 199383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com mat.postConcat(mats[x]); 200383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com } 201d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com 2021878651990d7c9da72cf43481432232bbef3550dcommit-bot@chromium.org SkScalar minScale = mat.getMinScale(); 2031878651990d7c9da72cf43481432232bbef3550dcommit-bot@chromium.org SkScalar maxScale = mat.getMaxScale(); 2041878651990d7c9da72cf43481432232bbef3550dcommit-bot@chromium.org REPORTER_ASSERT(reporter, (minScale < 0) == (maxScale < 0)); 2051878651990d7c9da72cf43481432232bbef3550dcommit-bot@chromium.org REPORTER_ASSERT(reporter, (maxScale < 0) == mat.hasPerspective()); 206383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com 207311a3cda9457d50cc7c2a0fc9f153a9ce2c8cb8ecommit-bot@chromium.org SkScalar scales[2]; 208311a3cda9457d50cc7c2a0fc9f153a9ce2c8cb8ecommit-bot@chromium.org bool success = mat.getMinMaxScales(scales); 209311a3cda9457d50cc7c2a0fc9f153a9ce2c8cb8ecommit-bot@chromium.org REPORTER_ASSERT(reporter, success == !mat.hasPerspective()); 210311a3cda9457d50cc7c2a0fc9f153a9ce2c8cb8ecommit-bot@chromium.org REPORTER_ASSERT(reporter, !success || (scales[0] == minScale && scales[1] == maxScale)); 211311a3cda9457d50cc7c2a0fc9f153a9ce2c8cb8ecommit-bot@chromium.org 212383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com if (mat.hasPerspective()) { 213383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com m -= 1; // try another non-persp matrix 214383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com continue; 215383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com } 216383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com 2171878651990d7c9da72cf43481432232bbef3550dcommit-bot@chromium.org // test a bunch of vectors. All should be scaled by between minScale and maxScale 218cea9abb001b07eaf4340a78db708bfac9e8c68c2commit-bot@chromium.org // (modulo some error) and we should find a vector that is scaled by almost each. 2191878651990d7c9da72cf43481432232bbef3550dcommit-bot@chromium.org static const SkScalar gVectorScaleTol = (105 * SK_Scalar1) / 100; 2201878651990d7c9da72cf43481432232bbef3550dcommit-bot@chromium.org static const SkScalar gCloseScaleTol = (97 * SK_Scalar1) / 100; 221cea9abb001b07eaf4340a78db708bfac9e8c68c2commit-bot@chromium.org SkScalar max = 0, min = SK_ScalarMax; 222383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkVector vectors[1000]; 22383a444602ec580a0040713eed588c245b4ae0ee9tomhudson@google.com for (size_t i = 0; i < SK_ARRAY_COUNT(vectors); ++i) { 224383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com vectors[i].fX = rand.nextSScalar1(); 225383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com vectors[i].fY = rand.nextSScalar1(); 226383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com if (!vectors[i].normalize()) { 227383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com i -= 1; 228383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com continue; 229383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com } 230383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com } 231383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com mat.mapVectors(vectors, SK_ARRAY_COUNT(vectors)); 23283a444602ec580a0040713eed588c245b4ae0ee9tomhudson@google.com for (size_t i = 0; i < SK_ARRAY_COUNT(vectors); ++i) { 233383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com SkScalar d = vectors[i].length(); 2341878651990d7c9da72cf43481432232bbef3550dcommit-bot@chromium.org REPORTER_ASSERT(reporter, SkScalarDiv(d, maxScale) < gVectorScaleTol); 2351878651990d7c9da72cf43481432232bbef3550dcommit-bot@chromium.org REPORTER_ASSERT(reporter, SkScalarDiv(minScale, d) < gVectorScaleTol); 236383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com if (max < d) { 237383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com max = d; 238383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com } 239cea9abb001b07eaf4340a78db708bfac9e8c68c2commit-bot@chromium.org if (min > d) { 240cea9abb001b07eaf4340a78db708bfac9e8c68c2commit-bot@chromium.org min = d; 241cea9abb001b07eaf4340a78db708bfac9e8c68c2commit-bot@chromium.org } 242383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com } 2431878651990d7c9da72cf43481432232bbef3550dcommit-bot@chromium.org REPORTER_ASSERT(reporter, SkScalarDiv(max, maxScale) >= gCloseScaleTol); 2441878651990d7c9da72cf43481432232bbef3550dcommit-bot@chromium.org REPORTER_ASSERT(reporter, SkScalarDiv(minScale, min) >= gCloseScaleTol); 245383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com } 246383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com} 247383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com 24846d3d39e65e0b3ea2ad7c91c176ccafb4df0fa24jvanverth@google.comstatic void test_matrix_is_similarity(skiatest::Reporter* reporter) { 24969afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com SkMatrix mat; 25069afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 25169afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // identity 25269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setIdentity(); 25346d3d39e65e0b3ea2ad7c91c176ccafb4df0fa24jvanverth@google.com REPORTER_ASSERT(reporter, mat.isSimilarity()); 25469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 25569afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // translation only 25669afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 25769afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setTranslate(SkIntToScalar(100), SkIntToScalar(100)); 25846d3d39e65e0b3ea2ad7c91c176ccafb4df0fa24jvanverth@google.com REPORTER_ASSERT(reporter, mat.isSimilarity()); 25969afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 26069afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // scale with same size 26169afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 26269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setScale(SkIntToScalar(15), SkIntToScalar(15)); 26346d3d39e65e0b3ea2ad7c91c176ccafb4df0fa24jvanverth@google.com REPORTER_ASSERT(reporter, mat.isSimilarity()); 26469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 26569afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // scale with one negative 26669afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 26769afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setScale(SkIntToScalar(-15), SkIntToScalar(15)); 26846d3d39e65e0b3ea2ad7c91c176ccafb4df0fa24jvanverth@google.com REPORTER_ASSERT(reporter, mat.isSimilarity()); 26969afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 27069afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // scale with different size 27169afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 27269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setScale(SkIntToScalar(15), SkIntToScalar(20)); 27346d3d39e65e0b3ea2ad7c91c176ccafb4df0fa24jvanverth@google.com REPORTER_ASSERT(reporter, !mat.isSimilarity()); 27469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 27569afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // scale with same size at a pivot point 27669afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 27769afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setScale(SkIntToScalar(15), SkIntToScalar(15), 27869afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com SkIntToScalar(2), SkIntToScalar(2)); 27946d3d39e65e0b3ea2ad7c91c176ccafb4df0fa24jvanverth@google.com REPORTER_ASSERT(reporter, mat.isSimilarity()); 28069afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 28169afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // scale with different size at a pivot point 28269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 28369afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setScale(SkIntToScalar(15), SkIntToScalar(20), 28469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com SkIntToScalar(2), SkIntToScalar(2)); 28546d3d39e65e0b3ea2ad7c91c176ccafb4df0fa24jvanverth@google.com REPORTER_ASSERT(reporter, !mat.isSimilarity()); 28669afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 28769afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // skew with same size 28869afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 28969afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setSkew(SkIntToScalar(15), SkIntToScalar(15)); 29046d3d39e65e0b3ea2ad7c91c176ccafb4df0fa24jvanverth@google.com REPORTER_ASSERT(reporter, !mat.isSimilarity()); 29169afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 29269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // skew with different size 29369afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 29469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setSkew(SkIntToScalar(15), SkIntToScalar(20)); 29546d3d39e65e0b3ea2ad7c91c176ccafb4df0fa24jvanverth@google.com REPORTER_ASSERT(reporter, !mat.isSimilarity()); 29669afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 29769afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // skew with same size at a pivot point 29869afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 29969afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setSkew(SkIntToScalar(15), SkIntToScalar(15), 30069afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com SkIntToScalar(2), SkIntToScalar(2)); 30146d3d39e65e0b3ea2ad7c91c176ccafb4df0fa24jvanverth@google.com REPORTER_ASSERT(reporter, !mat.isSimilarity()); 30269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 30369afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // skew with different size at a pivot point 30469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 30569afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setSkew(SkIntToScalar(15), SkIntToScalar(20), 30669afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com SkIntToScalar(2), SkIntToScalar(2)); 30746d3d39e65e0b3ea2ad7c91c176ccafb4df0fa24jvanverth@google.com REPORTER_ASSERT(reporter, !mat.isSimilarity()); 30869afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 30969afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // perspective x 31069afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 31169afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setPerspX(SkScalarToPersp(SK_Scalar1 / 2)); 31246d3d39e65e0b3ea2ad7c91c176ccafb4df0fa24jvanverth@google.com REPORTER_ASSERT(reporter, !mat.isSimilarity()); 31369afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 31469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // perspective y 31569afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 31669afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setPerspY(SkScalarToPersp(SK_Scalar1 / 2)); 31746d3d39e65e0b3ea2ad7c91c176ccafb4df0fa24jvanverth@google.com REPORTER_ASSERT(reporter, !mat.isSimilarity()); 31869afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 31969afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // rotate 32069afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com for (int angle = 0; angle < 360; ++angle) { 32169afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 32269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setRotate(SkIntToScalar(angle)); 32346d3d39e65e0b3ea2ad7c91c176ccafb4df0fa24jvanverth@google.com REPORTER_ASSERT(reporter, mat.isSimilarity()); 32469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com } 32569afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 32669afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // see if there are any accumulated precision issues 32769afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 32869afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com for (int i = 1; i < 360; i++) { 32969afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.postRotate(SkIntToScalar(1)); 33069afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com } 33146d3d39e65e0b3ea2ad7c91c176ccafb4df0fa24jvanverth@google.com REPORTER_ASSERT(reporter, mat.isSimilarity()); 33269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 33369afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // rotate + translate 33469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 33569afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setRotate(SkIntToScalar(30)); 33669afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.postTranslate(SkIntToScalar(10), SkIntToScalar(20)); 33746d3d39e65e0b3ea2ad7c91c176ccafb4df0fa24jvanverth@google.com REPORTER_ASSERT(reporter, mat.isSimilarity()); 33869afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 33969afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // rotate + uniform scale 34069afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 34169afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setRotate(SkIntToScalar(30)); 34269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.postScale(SkIntToScalar(2), SkIntToScalar(2)); 34346d3d39e65e0b3ea2ad7c91c176ccafb4df0fa24jvanverth@google.com REPORTER_ASSERT(reporter, mat.isSimilarity()); 34469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 34569afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // rotate + non-uniform scale 34669afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.reset(); 34769afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setRotate(SkIntToScalar(30)); 34869afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.postScale(SkIntToScalar(3), SkIntToScalar(2)); 34946d3d39e65e0b3ea2ad7c91c176ccafb4df0fa24jvanverth@google.com REPORTER_ASSERT(reporter, !mat.isSimilarity()); 35069afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 35169afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // all zero 35269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setAll(0, 0, 0, 0, 0, 0, 0, 0, 0); 35346d3d39e65e0b3ea2ad7c91c176ccafb4df0fa24jvanverth@google.com REPORTER_ASSERT(reporter, !mat.isSimilarity()); 35469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 35569afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // all zero except perspective 35669afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setAll(0, 0, 0, 0, 0, 0, 0, 0, SK_Scalar1); 35746d3d39e65e0b3ea2ad7c91c176ccafb4df0fa24jvanverth@google.com REPORTER_ASSERT(reporter, !mat.isSimilarity()); 35869afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 35969afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com // scales zero, only skews 36069afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com mat.setAll(0, SK_Scalar1, 0, 36169afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com SK_Scalar1, 0, 0, 36269afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 0, 0, SkMatrix::I()[8]); 36346d3d39e65e0b3ea2ad7c91c176ccafb4df0fa24jvanverth@google.com REPORTER_ASSERT(reporter, mat.isSimilarity()); 36469afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com} 36569afee1c8fd22affc873890cfcf766d6f5cfdcc2bsalomon@google.com 36608284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org// For test_matrix_decomposition, below. 3675c561cb8d8151d38c69128345106cbf225033a1askia.committer@gmail.comstatic bool scalar_nearly_equal_relative(SkScalar a, SkScalar b, 36808284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org SkScalar tolerance = SK_ScalarNearlyZero) { 36908284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org // from Bruce Dawson 3705b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org // absolute check 37108284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org SkScalar diff = SkScalarAbs(a - b); 37208284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org if (diff < tolerance) { 37308284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org return true; 37408284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org } 37508284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org 3765b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org // relative check 37708284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org a = SkScalarAbs(a); 37808284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org b = SkScalarAbs(b); 37908284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org SkScalar largest = (b > a) ? b : a; 38008284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org 38108284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org if (diff <= largest*tolerance) { 38208284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org return true; 38308284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org } 38408284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org 38508284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org return false; 38608284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org} 38708284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org 3885b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.orgstatic bool check_matrix_recomposition(const SkMatrix& mat, 3895b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org const SkPoint& rotation1, 3905b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org const SkPoint& scale, 3915b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org const SkPoint& rotation2) { 3925b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org SkScalar c1 = rotation1.fX; 3935b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org SkScalar s1 = rotation1.fY; 3945b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org SkScalar scaleX = scale.fX; 3955b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org SkScalar scaleY = scale.fY; 3965b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org SkScalar c2 = rotation2.fX; 3975b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org SkScalar s2 = rotation2.fY; 39885092f05c406ed5a0c65ff576816924c1a6b903bskia.committer@gmail.com 3995b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org // We do a relative check here because large scale factors cause problems with an absolute check 4005b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org bool result = scalar_nearly_equal_relative(mat[SkMatrix::kMScaleX], 4015b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org scaleX*c1*c2 - scaleY*s1*s2) && 4025b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org scalar_nearly_equal_relative(mat[SkMatrix::kMSkewX], 4035b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org -scaleX*s1*c2 - scaleY*c1*s2) && 4045b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org scalar_nearly_equal_relative(mat[SkMatrix::kMSkewY], 4055b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org scaleX*c1*s2 + scaleY*s1*c2) && 4065b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org scalar_nearly_equal_relative(mat[SkMatrix::kMScaleY], 4075b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org -scaleX*s1*s2 + scaleY*c1*c2); 4085b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org return result; 4095b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org} 4105b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org 41108284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.orgstatic void test_matrix_decomposition(skiatest::Reporter* reporter) { 41208284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org SkMatrix mat; 4135b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org SkPoint rotation1, scale, rotation2; 41408284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org 41508284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org const float kRotation0 = 15.5f; 41608284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org const float kRotation1 = -50.f; 41708284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org const float kScale0 = 5000.f; 41808284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org const float kScale1 = 0.001f; 41908284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org 42008284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org // identity 42108284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.reset(); 4225b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, SkDecomposeUpper2x2(mat, &rotation1, &scale, &rotation2)); 4235b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, check_matrix_recomposition(mat, rotation1, scale, rotation2)); 42408284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org // make sure it doesn't crash if we pass in NULLs 4255b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, SkDecomposeUpper2x2(mat, NULL, NULL, NULL)); 42608284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org 42708284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org // rotation only 42808284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.setRotate(kRotation0); 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 only 43308284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.setScale(kScale0, kScale0); 4345b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, SkDecomposeUpper2x2(mat, &rotation1, &scale, &rotation2)); 4355b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, check_matrix_recomposition(mat, rotation1, scale, rotation2)); 43608284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org 43708284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org // anisotropic scale only 43808284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.setScale(kScale1, kScale0); 4395b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, SkDecomposeUpper2x2(mat, &rotation1, &scale, &rotation2)); 4405b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, check_matrix_recomposition(mat, rotation1, scale, rotation2)); 44108284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org 44208284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org // rotation then uniform scale 44308284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.setRotate(kRotation1); 44408284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.postScale(kScale0, kScale0); 4455b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, SkDecomposeUpper2x2(mat, &rotation1, &scale, &rotation2)); 4465b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, check_matrix_recomposition(mat, rotation1, scale, rotation2)); 44708284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org 44808284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org // uniform scale then rotation 44908284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.setScale(kScale0, kScale0); 45008284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.postRotate(kRotation1); 4515b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, SkDecomposeUpper2x2(mat, &rotation1, &scale, &rotation2)); 4525b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, check_matrix_recomposition(mat, rotation1, scale, rotation2)); 45308284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org 45408284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org // rotation then uniform scale+reflection 45508284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.setRotate(kRotation0); 45608284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.postScale(kScale1, -kScale1); 4575b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, SkDecomposeUpper2x2(mat, &rotation1, &scale, &rotation2)); 4585b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, check_matrix_recomposition(mat, rotation1, scale, rotation2)); 45908284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org 46008284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org // uniform scale+reflection, then rotate 46108284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.setScale(kScale0, -kScale0); 46208284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.postRotate(kRotation1); 4635b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, SkDecomposeUpper2x2(mat, &rotation1, &scale, &rotation2)); 4645b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, check_matrix_recomposition(mat, rotation1, scale, rotation2)); 46508284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org 46608284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org // rotation then anisotropic scale 46708284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.setRotate(kRotation1); 46808284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.postScale(kScale1, kScale0); 4695b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, SkDecomposeUpper2x2(mat, &rotation1, &scale, &rotation2)); 4705b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, check_matrix_recomposition(mat, rotation1, scale, rotation2)); 47108284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org 4725b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org // rotation then anisotropic scale 4735b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org mat.setRotate(90); 4745b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org mat.postScale(kScale1, kScale0); 4755b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, SkDecomposeUpper2x2(mat, &rotation1, &scale, &rotation2)); 4765b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, check_matrix_recomposition(mat, rotation1, scale, rotation2)); 47785092f05c406ed5a0c65ff576816924c1a6b903bskia.committer@gmail.com 47808284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org // anisotropic scale then rotation 47908284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.setScale(kScale1, kScale0); 48008284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.postRotate(kRotation0); 4815b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, SkDecomposeUpper2x2(mat, &rotation1, &scale, &rotation2)); 4825b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, check_matrix_recomposition(mat, rotation1, scale, rotation2)); 48385092f05c406ed5a0c65ff576816924c1a6b903bskia.committer@gmail.com 4845b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org // anisotropic scale then rotation 4855b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org mat.setScale(kScale1, kScale0); 4865b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org mat.postRotate(90); 4875b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, SkDecomposeUpper2x2(mat, &rotation1, &scale, &rotation2)); 4885b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, check_matrix_recomposition(mat, rotation1, scale, rotation2)); 48908284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org 49008284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org // rotation, uniform scale, then different rotation 49108284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.setRotate(kRotation1); 49208284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.postScale(kScale0, kScale0); 49308284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.postRotate(kRotation0); 4945b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, SkDecomposeUpper2x2(mat, &rotation1, &scale, &rotation2)); 4955b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, check_matrix_recomposition(mat, rotation1, scale, rotation2)); 49608284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org 49708284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org // rotation, anisotropic scale, then different rotation 49808284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.setRotate(kRotation0); 49908284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.postScale(kScale1, kScale0); 50008284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.postRotate(kRotation1); 5015b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, SkDecomposeUpper2x2(mat, &rotation1, &scale, &rotation2)); 5025b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, check_matrix_recomposition(mat, rotation1, scale, rotation2)); 50385092f05c406ed5a0c65ff576816924c1a6b903bskia.committer@gmail.com 5045b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org // rotation, anisotropic scale + reflection, then different rotation 5055b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org mat.setRotate(kRotation0); 5065b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org mat.postScale(-kScale1, kScale0); 5075b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org mat.postRotate(kRotation1); 5085b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, SkDecomposeUpper2x2(mat, &rotation1, &scale, &rotation2)); 5095b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, check_matrix_recomposition(mat, rotation1, scale, rotation2)); 51008284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org 51108284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org // try some random matrices 512e0e7cfe44bb9d66d76120a79e5275c294bacaa22commit-bot@chromium.org SkRandom rand; 51308284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org for (int m = 0; m < 1000; ++m) { 5145b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org SkScalar rot0 = rand.nextRangeF(-180, 180); 51508284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org SkScalar sx = rand.nextRangeF(-3000.f, 3000.f); 51608284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org SkScalar sy = rand.nextRangeF(-3000.f, 3000.f); 5175b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org SkScalar rot1 = rand.nextRangeF(-180, 180); 51808284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.setRotate(rot0); 51908284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.postScale(sx, sy); 52008284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.postRotate(rot1); 52108284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org 5225b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org if (SkDecomposeUpper2x2(mat, &rotation1, &scale, &rotation2)) { 5235b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, check_matrix_recomposition(mat, rotation1, scale, rotation2)); 52408284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org } else { 52508284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org // if the matrix is degenerate, the basis vectors should be near-parallel or near-zero 52608284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org SkScalar perpdot = mat[SkMatrix::kMScaleX]*mat[SkMatrix::kMScaleY] - 52708284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat[SkMatrix::kMSkewX]*mat[SkMatrix::kMSkewY]; 52808284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org REPORTER_ASSERT(reporter, SkScalarNearlyZero(perpdot)); 52908284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org } 53008284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org } 53108284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org 53208284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org // translation shouldn't affect this 53308284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.postTranslate(-1000.f, 1000.f); 5345b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, SkDecomposeUpper2x2(mat, &rotation1, &scale, &rotation2)); 5355b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, check_matrix_recomposition(mat, rotation1, scale, rotation2)); 53608284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org 53708284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org // perspective shouldn't affect this 538588f3d3896ce84a00ba0b229a4fe8fff2bf67516jvanverth@google.com mat[SkMatrix::kMPersp0] = 12.f; 539588f3d3896ce84a00ba0b229a4fe8fff2bf67516jvanverth@google.com mat[SkMatrix::kMPersp1] = 4.f; 540588f3d3896ce84a00ba0b229a4fe8fff2bf67516jvanverth@google.com mat[SkMatrix::kMPersp2] = 1872.f; 5415b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, SkDecomposeUpper2x2(mat, &rotation1, &scale, &rotation2)); 5425b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, check_matrix_recomposition(mat, rotation1, scale, rotation2)); 54308284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org 54408284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org // degenerate matrices 54508284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org // mostly zero entries 54608284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.reset(); 54708284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat[SkMatrix::kMScaleX] = 0.f; 5485b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, !SkDecomposeUpper2x2(mat, &rotation1, &scale, &rotation2)); 54908284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.reset(); 55008284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat[SkMatrix::kMScaleY] = 0.f; 5515b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, !SkDecomposeUpper2x2(mat, &rotation1, &scale, &rotation2)); 55208284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat.reset(); 55308284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org // linearly dependent entries 55408284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat[SkMatrix::kMScaleX] = 1.f; 55508284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat[SkMatrix::kMSkewX] = 2.f; 55608284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat[SkMatrix::kMSkewY] = 4.f; 55708284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org mat[SkMatrix::kMScaleY] = 8.f; 5585b2e2640ed345c4670b99b349f62eb6f9446ec1ecommit-bot@chromium.org REPORTER_ASSERT(reporter, !SkDecomposeUpper2x2(mat, &rotation1, &scale, &rotation2)); 55908284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org} 56008284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org 561259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com// For test_matrix_homogeneous, below. 562259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.comstatic bool scalar_array_nearly_equal_relative(const SkScalar a[], const SkScalar b[], int count) { 563259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com for (int i = 0; i < count; ++i) { 564259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com if (!scalar_nearly_equal_relative(a[i], b[i])) { 565259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com return false; 566259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com } 567259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com } 568259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com return true; 569259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com} 570259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com 571259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com// For test_matrix_homogeneous, below. 572259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com// Maps a single triple in src using m and compares results to those in dst 573259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.comstatic bool naive_homogeneous_mapping(const SkMatrix& m, const SkScalar src[3], 574259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com const SkScalar dst[3]) { 575259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com SkScalar res[3]; 576259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com SkScalar ms[9] = {m[0], m[1], m[2], 577259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com m[3], m[4], m[5], 578259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com m[6], m[7], m[8]}; 579259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com res[0] = src[0] * ms[0] + src[1] * ms[1] + src[2] * ms[2]; 580259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com res[1] = src[0] * ms[3] + src[1] * ms[4] + src[2] * ms[5]; 581259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com res[2] = src[0] * ms[6] + src[1] * ms[7] + src[2] * ms[8]; 582259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com return scalar_array_nearly_equal_relative(res, dst, 3); 583259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com} 584259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com 585259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.comstatic void test_matrix_homogeneous(skiatest::Reporter* reporter) { 586259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com SkMatrix mat; 587259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com 588259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com const float kRotation0 = 15.5f; 589259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com const float kRotation1 = -50.f; 590259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com const float kScale0 = 5000.f; 591259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com 592259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com const int kTripleCount = 1000; 593259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com const int kMatrixCount = 1000; 594e0e7cfe44bb9d66d76120a79e5275c294bacaa22commit-bot@chromium.org SkRandom rand; 595259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com 596259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com SkScalar randTriples[3*kTripleCount]; 597259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com for (int i = 0; i < 3*kTripleCount; ++i) { 598259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com randTriples[i] = rand.nextRangeF(-3000.f, 3000.f); 599259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com } 600259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com 601259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com SkMatrix mats[kMatrixCount]; 602259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com for (int i = 0; i < kMatrixCount; ++i) { 603259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com for (int j = 0; j < 9; ++j) { 604259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com mats[i].set(j, rand.nextRangeF(-3000.f, 3000.f)); 605259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com } 606259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com } 607259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com 608259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com // identity 609259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com { 610259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com mat.reset(); 611259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com SkScalar dst[3*kTripleCount]; 612259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com mat.mapHomogeneousPoints(dst, randTriples, kTripleCount); 613259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com REPORTER_ASSERT(reporter, scalar_array_nearly_equal_relative(randTriples, dst, kTripleCount*3)); 614259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com } 615259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com 616259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com // zero matrix 617259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com { 618259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com mat.setAll(0.f, 0.f, 0.f, 0.f, 0.f, 0.f, 0.f, 0.f, 0.f); 619259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com SkScalar dst[3*kTripleCount]; 620259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com mat.mapHomogeneousPoints(dst, randTriples, kTripleCount); 621259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com SkScalar zeros[3] = {0.f, 0.f, 0.f}; 622259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com for (int i = 0; i < kTripleCount; ++i) { 623259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com REPORTER_ASSERT(reporter, scalar_array_nearly_equal_relative(&dst[i*3], zeros, 3)); 624259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com } 625259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com } 626259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com 627259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com // zero point 628259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com { 629259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com SkScalar zeros[3] = {0.f, 0.f, 0.f}; 630259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com for (int i = 0; i < kMatrixCount; ++i) { 631259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com SkScalar dst[3]; 632259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com mats[i].mapHomogeneousPoints(dst, zeros, 1); 633259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com REPORTER_ASSERT(reporter, scalar_array_nearly_equal_relative(dst, zeros, 3)); 634259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com } 635259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com } 636259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com 637259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com // doesn't crash with null dst, src, count == 0 638259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com { 639259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com mats[0].mapHomogeneousPoints(NULL, NULL, 0); 640259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com } 641259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com 642259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com // uniform scale of point 643259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com { 644259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com mat.setScale(kScale0, kScale0); 645259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com SkScalar dst[3]; 646259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com SkScalar src[3] = {randTriples[0], randTriples[1], 1.f}; 647259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com SkPoint pnt; 648259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com pnt.set(src[0], src[1]); 649259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com mat.mapHomogeneousPoints(dst, src, 1); 650259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com mat.mapPoints(&pnt, &pnt, 1); 651259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com REPORTER_ASSERT(reporter, SkScalarNearlyEqual(dst[0], pnt.fX)); 652259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com REPORTER_ASSERT(reporter, SkScalarNearlyEqual(dst[1], pnt.fY)); 653259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com REPORTER_ASSERT(reporter, SkScalarNearlyEqual(dst[2], SK_Scalar1)); 654259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com } 655259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com 656259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com // rotation of point 657259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com { 658259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com mat.setRotate(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 // rotation, scale, rotation of point 671259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com { 672259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com mat.setRotate(kRotation1); 673259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com mat.postScale(kScale0, kScale0); 674259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com mat.postRotate(kRotation0); 675259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com SkScalar dst[3]; 676259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com SkScalar src[3] = {randTriples[0], randTriples[1], 1.f}; 677259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com SkPoint pnt; 678259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com pnt.set(src[0], src[1]); 679259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com mat.mapHomogeneousPoints(dst, src, 1); 680259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com mat.mapPoints(&pnt, &pnt, 1); 681259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com REPORTER_ASSERT(reporter, SkScalarNearlyEqual(dst[0], pnt.fX)); 682259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com REPORTER_ASSERT(reporter, SkScalarNearlyEqual(dst[1], pnt.fY)); 683259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com REPORTER_ASSERT(reporter, SkScalarNearlyEqual(dst[2], SK_Scalar1)); 684259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com } 685259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com 686259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com // compare with naive approach 687259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com { 688259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com for (int i = 0; i < kMatrixCount; ++i) { 689259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com for (int j = 0; j < kTripleCount; ++j) { 690259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com SkScalar dst[3]; 691259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com mats[i].mapHomogeneousPoints(dst, &randTriples[j*3], 1); 692259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com REPORTER_ASSERT(reporter, naive_homogeneous_mapping(mats[i], &randTriples[j*3], dst)); 693259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com } 694259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com } 695259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com } 696259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com 697259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com} 698259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com 699e4fafb146e85cdfcf9d5418597b6818aa0754adatfarina@chromium.orgDEF_TEST(Matrix, reporter) { 700ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com SkMatrix mat, inverse, iden1, iden2; 701ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com 702ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com mat.reset(); 703ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com mat.setTranslate(SK_Scalar1, SK_Scalar1); 7045bfa55b1cd067fa2fe1cbe409573aeaabd98d23creed@google.com REPORTER_ASSERT(reporter, mat.invert(&inverse)); 705ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com iden1.setConcat(mat, inverse); 706ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com REPORTER_ASSERT(reporter, is_identity(iden1)); 707ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com 7082fb96cc5d713451216bd63d5dc8d19abc8550730reed@google.com mat.setScale(SkIntToScalar(2), SkIntToScalar(4)); 7095bfa55b1cd067fa2fe1cbe409573aeaabd98d23creed@google.com REPORTER_ASSERT(reporter, mat.invert(&inverse)); 710ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com iden1.setConcat(mat, inverse); 711ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com REPORTER_ASSERT(reporter, is_identity(iden1)); 7124b7577b042966657c776fd95c67f9363af57945freed@android.com test_flatten(reporter, mat); 713ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com 7142fb96cc5d713451216bd63d5dc8d19abc8550730reed@google.com mat.setScale(SK_Scalar1/2, SkIntToScalar(2)); 7155bfa55b1cd067fa2fe1cbe409573aeaabd98d23creed@google.com REPORTER_ASSERT(reporter, mat.invert(&inverse)); 716ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com iden1.setConcat(mat, inverse); 717ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com REPORTER_ASSERT(reporter, is_identity(iden1)); 7184b7577b042966657c776fd95c67f9363af57945freed@android.com test_flatten(reporter, mat); 719ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com 720ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com mat.setScale(SkIntToScalar(3), SkIntToScalar(5), SkIntToScalar(20), 0); 721ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com mat.postRotate(SkIntToScalar(25)); 722ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com REPORTER_ASSERT(reporter, mat.invert(NULL)); 7235bfa55b1cd067fa2fe1cbe409573aeaabd98d23creed@google.com REPORTER_ASSERT(reporter, mat.invert(&inverse)); 724ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com iden1.setConcat(mat, inverse); 725ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com REPORTER_ASSERT(reporter, is_identity(iden1)); 726ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com iden2.setConcat(inverse, mat); 727ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com REPORTER_ASSERT(reporter, is_identity(iden2)); 7284b7577b042966657c776fd95c67f9363af57945freed@android.com test_flatten(reporter, mat); 7294b7577b042966657c776fd95c67f9363af57945freed@android.com test_flatten(reporter, iden2); 73080e39a77b16f4396eed230efea1d0b2fc8cbfb00reed@android.com 7312fb96cc5d713451216bd63d5dc8d19abc8550730reed@google.com mat.setScale(0, SK_Scalar1); 732e40591d5484762067f976d979c506f126c7779e1reed@google.com REPORTER_ASSERT(reporter, !mat.invert(NULL)); 7332fb96cc5d713451216bd63d5dc8d19abc8550730reed@google.com REPORTER_ASSERT(reporter, !mat.invert(&inverse)); 7342fb96cc5d713451216bd63d5dc8d19abc8550730reed@google.com mat.setScale(SK_Scalar1, 0); 735e40591d5484762067f976d979c506f126c7779e1reed@google.com REPORTER_ASSERT(reporter, !mat.invert(NULL)); 7362fb96cc5d713451216bd63d5dc8d19abc8550730reed@google.com REPORTER_ASSERT(reporter, !mat.invert(&inverse)); 7372fb96cc5d713451216bd63d5dc8d19abc8550730reed@google.com 738ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com // rectStaysRect test 739ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { 740ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com static const struct { 741ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com SkScalar m00, m01, m10, m11; 742ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com bool mStaysRect; 743ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com } 744ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com gRectStaysRectSamples[] = { 745ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { 0, 0, 0, 0, false }, 746ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { 0, 0, 0, SK_Scalar1, false }, 747ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { 0, 0, SK_Scalar1, 0, false }, 748ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { 0, 0, SK_Scalar1, SK_Scalar1, false }, 749ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { 0, SK_Scalar1, 0, 0, false }, 750ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { 0, SK_Scalar1, 0, SK_Scalar1, false }, 751ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { 0, SK_Scalar1, SK_Scalar1, 0, true }, 752ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { 0, SK_Scalar1, SK_Scalar1, SK_Scalar1, false }, 753ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { SK_Scalar1, 0, 0, 0, false }, 754ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { SK_Scalar1, 0, 0, SK_Scalar1, true }, 755ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { SK_Scalar1, 0, SK_Scalar1, 0, false }, 756ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { SK_Scalar1, 0, SK_Scalar1, SK_Scalar1, false }, 757ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { SK_Scalar1, SK_Scalar1, 0, 0, false }, 758ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { SK_Scalar1, SK_Scalar1, 0, SK_Scalar1, false }, 759ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { SK_Scalar1, SK_Scalar1, SK_Scalar1, 0, false }, 760ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com { SK_Scalar1, SK_Scalar1, SK_Scalar1, SK_Scalar1, false } 761ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com }; 76280e39a77b16f4396eed230efea1d0b2fc8cbfb00reed@android.com 763ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com for (size_t i = 0; i < SK_ARRAY_COUNT(gRectStaysRectSamples); i++) { 764ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com SkMatrix m; 76580e39a77b16f4396eed230efea1d0b2fc8cbfb00reed@android.com 766ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com m.reset(); 767ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com m.set(SkMatrix::kMScaleX, gRectStaysRectSamples[i].m00); 768ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com m.set(SkMatrix::kMSkewX, gRectStaysRectSamples[i].m01); 769ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com m.set(SkMatrix::kMSkewY, gRectStaysRectSamples[i].m10); 770ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com m.set(SkMatrix::kMScaleY, gRectStaysRectSamples[i].m11); 771ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com REPORTER_ASSERT(reporter, 772ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com m.rectStaysRect() == gRectStaysRectSamples[i].mStaysRect); 773ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com } 774ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com } 7751ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com 776ba7983e55ce15ddcd5534011935178760164fb9dbungeman@google.com mat.reset(); 7771ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com mat.set(SkMatrix::kMScaleX, SkIntToScalar(1)); 7781ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com mat.set(SkMatrix::kMSkewX, SkIntToScalar(2)); 7791ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com mat.set(SkMatrix::kMTransX, SkIntToScalar(3)); 7801ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com mat.set(SkMatrix::kMSkewY, SkIntToScalar(4)); 7811ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com mat.set(SkMatrix::kMScaleY, SkIntToScalar(5)); 7821ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com mat.set(SkMatrix::kMTransY, SkIntToScalar(6)); 7831ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com SkScalar affine[6]; 7841ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com REPORTER_ASSERT(reporter, mat.asAffine(affine)); 7851ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com 7861ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com #define affineEqual(e) affine[SkMatrix::kA##e] == mat.get(SkMatrix::kM##e) 7871ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com REPORTER_ASSERT(reporter, affineEqual(ScaleX)); 7881ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com REPORTER_ASSERT(reporter, affineEqual(SkewY)); 7891ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com REPORTER_ASSERT(reporter, affineEqual(SkewX)); 7901ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com REPORTER_ASSERT(reporter, affineEqual(ScaleY)); 7911ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com REPORTER_ASSERT(reporter, affineEqual(TransX)); 7921ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com REPORTER_ASSERT(reporter, affineEqual(TransY)); 7931ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com #undef affineEqual 7941ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com 79507faed110275048c83a55ae39042da2c9d916108bungeman@google.com mat.set(SkMatrix::kMPersp1, SkScalarToPersp(SK_Scalar1 / 2)); 7961ddd7c39289b7dd18537fdac4b630e378cd78842bungeman@google.com REPORTER_ASSERT(reporter, !mat.asAffine(affine)); 797383963280ddd13030331765fe88d2aefa3e32130bsalomon@google.com 7988fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com SkMatrix mat2; 7998fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com mat2.reset(); 8008fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com mat.reset(); 8018fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com SkScalar zero = 0; 8028fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com mat.set(SkMatrix::kMSkewX, -zero); 8038fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com REPORTER_ASSERT(reporter, are_equal(reporter, mat, mat2)); 8048fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com 8058fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com mat2.reset(); 8068fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com mat.reset(); 8078fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com mat.set(SkMatrix::kMSkewX, SK_ScalarNaN); 8088fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com mat2.set(SkMatrix::kMSkewX, SK_ScalarNaN); 8098fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com REPORTER_ASSERT(reporter, !are_equal(reporter, mat, mat2)); 8108fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com 8111878651990d7c9da72cf43481432232bbef3550dcommit-bot@chromium.org test_matrix_min_max_scale(reporter); 81246d3d39e65e0b3ea2ad7c91c176ccafb4df0fa24jvanverth@google.com test_matrix_is_similarity(reporter); 81397cd69ca23b27d88e08727366c29c1147eb564dereed@google.com test_matrix_recttorect(reporter); 81408284e4d2421fb6c1978e68038a3568711cd9877commit-bot@chromium.org test_matrix_decomposition(reporter); 815259fbaf7a464827bc560517988daeb5836e11e98egdaniel@google.com test_matrix_homogeneous(reporter); 816ed673310e2551e64d8196f7776d7d4c92085f8c2reed@android.com} 81799bd7d817471ec903a7fe364b4e1d4477b1372b5commit-bot@chromium.org 81899bd7d817471ec903a7fe364b4e1d4477b1372b5commit-bot@chromium.orgDEF_TEST(Matrix_Concat, r) { 81999bd7d817471ec903a7fe364b4e1d4477b1372b5commit-bot@chromium.org SkMatrix a; 82099bd7d817471ec903a7fe364b4e1d4477b1372b5commit-bot@chromium.org a.setTranslate(10, 20); 82199bd7d817471ec903a7fe364b4e1d4477b1372b5commit-bot@chromium.org 82299bd7d817471ec903a7fe364b4e1d4477b1372b5commit-bot@chromium.org SkMatrix b; 82399bd7d817471ec903a7fe364b4e1d4477b1372b5commit-bot@chromium.org b.setScale(3, 5); 82499bd7d817471ec903a7fe364b4e1d4477b1372b5commit-bot@chromium.org 82599bd7d817471ec903a7fe364b4e1d4477b1372b5commit-bot@chromium.org SkMatrix expected; 82699bd7d817471ec903a7fe364b4e1d4477b1372b5commit-bot@chromium.org expected.setConcat(a,b); 82799bd7d817471ec903a7fe364b4e1d4477b1372b5commit-bot@chromium.org 82899bd7d817471ec903a7fe364b4e1d4477b1372b5commit-bot@chromium.org REPORTER_ASSERT(r, expected == SkMatrix::Concat(a, b)); 82999bd7d817471ec903a7fe364b4e1d4477b1372b5commit-bot@chromium.org} 830