1 // Copyright 2012 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #include "cc/test/geometry_test_utils.h" 6 7 #include "base/logging.h" 8 #include "testing/gtest/include/gtest/gtest.h" 9 #include "ui/gfx/transform.h" 10 11 namespace cc { 12 13 // NOTE: even though transform data types use double precision, we only check 14 // for equality within single-precision error bounds because many transforms 15 // originate from single-precision data types such as quads/rects/etc. 16 17 void ExpectTransformationMatrixEq(const gfx::Transform& expected, 18 const gfx::Transform& actual) { 19 EXPECT_FLOAT_EQ((expected).matrix().getDouble(0, 0), 20 (actual).matrix().getDouble(0, 0)); 21 EXPECT_FLOAT_EQ((expected).matrix().getDouble(1, 0), 22 (actual).matrix().getDouble(1, 0)); 23 EXPECT_FLOAT_EQ((expected).matrix().getDouble(2, 0), 24 (actual).matrix().getDouble(2, 0)); 25 EXPECT_FLOAT_EQ((expected).matrix().getDouble(3, 0), 26 (actual).matrix().getDouble(3, 0)); 27 EXPECT_FLOAT_EQ((expected).matrix().getDouble(0, 1), 28 (actual).matrix().getDouble(0, 1)); 29 EXPECT_FLOAT_EQ((expected).matrix().getDouble(1, 1), 30 (actual).matrix().getDouble(1, 1)); 31 EXPECT_FLOAT_EQ((expected).matrix().getDouble(2, 1), 32 (actual).matrix().getDouble(2, 1)); 33 EXPECT_FLOAT_EQ((expected).matrix().getDouble(3, 1), 34 (actual).matrix().getDouble(3, 1)); 35 EXPECT_FLOAT_EQ((expected).matrix().getDouble(0, 2), 36 (actual).matrix().getDouble(0, 2)); 37 EXPECT_FLOAT_EQ((expected).matrix().getDouble(1, 2), 38 (actual).matrix().getDouble(1, 2)); 39 EXPECT_FLOAT_EQ((expected).matrix().getDouble(2, 2), 40 (actual).matrix().getDouble(2, 2)); 41 EXPECT_FLOAT_EQ((expected).matrix().getDouble(3, 2), 42 (actual).matrix().getDouble(3, 2)); 43 EXPECT_FLOAT_EQ((expected).matrix().getDouble(0, 3), 44 (actual).matrix().getDouble(0, 3)); 45 EXPECT_FLOAT_EQ((expected).matrix().getDouble(1, 3), 46 (actual).matrix().getDouble(1, 3)); 47 EXPECT_FLOAT_EQ((expected).matrix().getDouble(2, 3), 48 (actual).matrix().getDouble(2, 3)); 49 EXPECT_FLOAT_EQ((expected).matrix().getDouble(3, 3), 50 (actual).matrix().getDouble(3, 3)); 51 } 52 53 gfx::Transform Inverse(const gfx::Transform& transform) { 54 gfx::Transform result(gfx::Transform::kSkipInitialization); 55 bool inverted_successfully = transform.GetInverse(&result); 56 DCHECK(inverted_successfully); 57 return result; 58 } 59 60 } // namespace cc 61
