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// Copyright 2014 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/trees/property_tree.h"
#include "cc/test/geometry_test_utils.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace cc {
TEST(PropertyTreeTest, ComputeTransformRoot) {
TransformTree tree;
TransformNode& root = *tree.Node(0);
root.data.local.Translate(2, 2);
root.data.target_id = 0;
tree.UpdateTransforms(0);
gfx::Transform expected;
gfx::Transform transform;
bool success = tree.ComputeTransform(0, 0, &transform);
EXPECT_TRUE(success);
EXPECT_TRANSFORMATION_MATRIX_EQ(expected, transform);
transform.MakeIdentity();
expected.Translate(2, 2);
success = tree.ComputeTransform(0, -1, &transform);
EXPECT_TRUE(success);
EXPECT_TRANSFORMATION_MATRIX_EQ(expected, transform);
transform.MakeIdentity();
expected.MakeIdentity();
expected.Translate(-2, -2);
success = tree.ComputeTransform(-1, 0, &transform);
EXPECT_TRUE(success);
EXPECT_TRANSFORMATION_MATRIX_EQ(expected, transform);
}
TEST(PropertyTreeTest, ComputeTransformChild) {
TransformTree tree;
TransformNode& root = *tree.Node(0);
root.data.local.Translate(2, 2);
root.data.target_id = 0;
tree.UpdateTransforms(0);
TransformNode child;
child.data.local.Translate(3, 3);
child.data.target_id = 0;
tree.Insert(child, 0);
tree.UpdateTransforms(1);
gfx::Transform expected;
gfx::Transform transform;
expected.Translate(3, 3);
bool success = tree.ComputeTransform(1, 0, &transform);
EXPECT_TRUE(success);
EXPECT_TRANSFORMATION_MATRIX_EQ(expected, transform);
transform.MakeIdentity();
expected.MakeIdentity();
expected.Translate(-3, -3);
success = tree.ComputeTransform(0, 1, &transform);
EXPECT_TRUE(success);
EXPECT_TRANSFORMATION_MATRIX_EQ(expected, transform);
transform.MakeIdentity();
expected.MakeIdentity();
expected.Translate(5, 5);
success = tree.ComputeTransform(1, -1, &transform);
EXPECT_TRUE(success);
EXPECT_TRANSFORMATION_MATRIX_EQ(expected, transform);
transform.MakeIdentity();
expected.MakeIdentity();
expected.Translate(-5, -5);
success = tree.ComputeTransform(-1, 1, &transform);
EXPECT_TRUE(success);
EXPECT_TRANSFORMATION_MATRIX_EQ(expected, transform);
}
TEST(PropertyTreeTest, ComputeTransformSibling) {
TransformTree tree;
TransformNode& root = *tree.Node(0);
root.data.local.Translate(2, 2);
root.data.target_id = 0;
tree.UpdateTransforms(0);
TransformNode child;
child.data.local.Translate(3, 3);
child.data.target_id = 0;
TransformNode sibling;
sibling.data.local.Translate(7, 7);
sibling.data.target_id = 0;
tree.Insert(child, 0);
tree.Insert(sibling, 0);
tree.UpdateTransforms(1);
tree.UpdateTransforms(2);
gfx::Transform expected;
gfx::Transform transform;
expected.Translate(4, 4);
bool success = tree.ComputeTransform(2, 1, &transform);
EXPECT_TRUE(success);
EXPECT_TRANSFORMATION_MATRIX_EQ(expected, transform);
transform.MakeIdentity();
expected.MakeIdentity();
expected.Translate(-4, -4);
success = tree.ComputeTransform(1, 2, &transform);
EXPECT_TRUE(success);
EXPECT_TRANSFORMATION_MATRIX_EQ(expected, transform);
}
TEST(PropertyTreeTest, ComputeTransformSiblingSingularAncestor) {
// In this test, we have the following tree:
// root
// + singular
// + child
// + sibling
// Now singular has a singular transform, so we cannot use screen space
// transforms to compute change of basis transforms between |child| and
// |sibling|.
TransformTree tree;
TransformNode& root = *tree.Node(0);
root.data.local.Translate(2, 2);
root.data.target_id = 0;
tree.UpdateTransforms(0);
TransformNode singular;
singular.data.local.matrix().set(2, 2, 0.0);
singular.data.target_id = 0;
TransformNode child;
child.data.local.Translate(3, 3);
child.data.target_id = 0;
TransformNode sibling;
sibling.data.local.Translate(7, 7);
sibling.data.target_id = 0;
tree.Insert(singular, 0);
tree.Insert(child, 1);
tree.Insert(sibling, 1);
tree.UpdateTransforms(1);
tree.UpdateTransforms(2);
tree.UpdateTransforms(3);
gfx::Transform expected;
gfx::Transform transform;
expected.Translate(4, 4);
bool success = tree.ComputeTransform(3, 2, &transform);
EXPECT_TRUE(success);
EXPECT_TRANSFORMATION_MATRIX_EQ(expected, transform);
transform.MakeIdentity();
expected.MakeIdentity();
expected.Translate(-4, -4);
success = tree.ComputeTransform(2, 3, &transform);
EXPECT_TRUE(success);
EXPECT_TRANSFORMATION_MATRIX_EQ(expected, transform);
}
TEST(PropertyTreeTest, MultiplicationOrder) {
TransformTree tree;
TransformNode& root = *tree.Node(0);
root.data.local.Translate(2, 2);
root.data.target_id = 0;
tree.UpdateTransforms(0);
TransformNode child;
child.data.local.Scale(2, 2);
child.data.target_id = 0;
tree.Insert(child, 0);
tree.UpdateTransforms(1);
gfx::Transform expected;
expected.Translate(2, 2);
expected.Scale(2, 2);
gfx::Transform transform;
gfx::Transform inverse;
bool success = tree.ComputeTransform(1, -1, &transform);
EXPECT_TRUE(success);
EXPECT_TRANSFORMATION_MATRIX_EQ(expected, transform);
success = tree.ComputeTransform(-1, 1, &inverse);
EXPECT_TRUE(success);
transform = transform * inverse;
expected.MakeIdentity();
EXPECT_TRANSFORMATION_MATRIX_EQ(expected, transform);
}
} // namespace cc
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