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// Copyright 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "cc/test/geometry_test_utils.h"
#include "base/logging.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "ui/gfx/transform.h"
namespace cc {
// NOTE: even though transform data types use double precision, we only check
// for equality within single-precision error bounds because many transforms
// originate from single-precision data types such as quads/rects/etc.
void ExpectTransformationMatrixEq(const gfx::Transform& expected,
const gfx::Transform& actual) {
EXPECT_FLOAT_EQ((expected).matrix().get(0, 0), (actual).matrix().get(0, 0));
EXPECT_FLOAT_EQ((expected).matrix().get(1, 0), (actual).matrix().get(1, 0));
EXPECT_FLOAT_EQ((expected).matrix().get(2, 0), (actual).matrix().get(2, 0));
EXPECT_FLOAT_EQ((expected).matrix().get(3, 0), (actual).matrix().get(3, 0));
EXPECT_FLOAT_EQ((expected).matrix().get(0, 1), (actual).matrix().get(0, 1));
EXPECT_FLOAT_EQ((expected).matrix().get(1, 1), (actual).matrix().get(1, 1));
EXPECT_FLOAT_EQ((expected).matrix().get(2, 1), (actual).matrix().get(2, 1));
EXPECT_FLOAT_EQ((expected).matrix().get(3, 1), (actual).matrix().get(3, 1));
EXPECT_FLOAT_EQ((expected).matrix().get(0, 2), (actual).matrix().get(0, 2));
EXPECT_FLOAT_EQ((expected).matrix().get(1, 2), (actual).matrix().get(1, 2));
EXPECT_FLOAT_EQ((expected).matrix().get(2, 2), (actual).matrix().get(2, 2));
EXPECT_FLOAT_EQ((expected).matrix().get(3, 2), (actual).matrix().get(3, 2));
EXPECT_FLOAT_EQ((expected).matrix().get(0, 3), (actual).matrix().get(0, 3));
EXPECT_FLOAT_EQ((expected).matrix().get(1, 3), (actual).matrix().get(1, 3));
EXPECT_FLOAT_EQ((expected).matrix().get(2, 3), (actual).matrix().get(2, 3));
EXPECT_FLOAT_EQ((expected).matrix().get(3, 3), (actual).matrix().get(3, 3));
}
gfx::Transform Inverse(const gfx::Transform& transform) {
gfx::Transform result(gfx::Transform::kSkipInitialization);
bool inverted_successfully = transform.GetInverse(&result);
DCHECK(inverted_successfully);
return result;
}
} // namespace cc
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