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keyframed_animation_curve_unittest.cc
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keyframed_animation_curve_unittest.cc
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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/animation/keyframed_animation_curve.h"
#include "cc/animation/transform_operations.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "ui/gfx/box_f.h"
namespace cc {
namespace {
void ExpectTranslateX(SkMScalar translate_x, const gfx::Transform& transform) {
EXPECT_FLOAT_EQ(translate_x, transform.matrix().get(0, 3));
}
void ExpectBrightness(double brightness, const FilterOperations& filter) {
EXPECT_EQ(1u, filter.size());
EXPECT_EQ(FilterOperation::BRIGHTNESS, filter.at(0).type());
EXPECT_FLOAT_EQ(brightness, filter.at(0).amount());
}
// Tests that a float animation with one keyframe works as expected.
TEST(KeyframedAnimationCurveTest, OneFloatKeyframe) {
scoped_ptr<KeyframedFloatAnimationCurve> curve(
KeyframedFloatAnimationCurve::Create());
curve->AddKeyframe(
FloatKeyframe::Create(0.0, 2.f, scoped_ptr<TimingFunction>()));
EXPECT_FLOAT_EQ(2.f, curve->GetValue(-1.f));
EXPECT_FLOAT_EQ(2.f, curve->GetValue(0.f));
EXPECT_FLOAT_EQ(2.f, curve->GetValue(0.5f));
EXPECT_FLOAT_EQ(2.f, curve->GetValue(1.f));
EXPECT_FLOAT_EQ(2.f, curve->GetValue(2.f));
}
// Tests that a float animation with two keyframes works as expected.
TEST(KeyframedAnimationCurveTest, TwoFloatKeyframe) {
scoped_ptr<KeyframedFloatAnimationCurve> curve(
KeyframedFloatAnimationCurve::Create());
curve->AddKeyframe(
FloatKeyframe::Create(0.0, 2.f, scoped_ptr<TimingFunction>()));
curve->AddKeyframe(
FloatKeyframe::Create(1.0, 4.f, scoped_ptr<TimingFunction>()));
EXPECT_FLOAT_EQ(2.f, curve->GetValue(-1.f));
EXPECT_FLOAT_EQ(2.f, curve->GetValue(0.f));
EXPECT_FLOAT_EQ(3.f, curve->GetValue(0.5f));
EXPECT_FLOAT_EQ(4.f, curve->GetValue(1.f));
EXPECT_FLOAT_EQ(4.f, curve->GetValue(2.f));
}
// Tests that a float animation with three keyframes works as expected.
TEST(KeyframedAnimationCurveTest, ThreeFloatKeyframe) {
scoped_ptr<KeyframedFloatAnimationCurve> curve(
KeyframedFloatAnimationCurve::Create());
curve->AddKeyframe(
FloatKeyframe::Create(0.0, 2.f, scoped_ptr<TimingFunction>()));
curve->AddKeyframe(
FloatKeyframe::Create(1.0, 4.f, scoped_ptr<TimingFunction>()));
curve->AddKeyframe(
FloatKeyframe::Create(2.0, 8.f, scoped_ptr<TimingFunction>()));
EXPECT_FLOAT_EQ(2.f, curve->GetValue(-1.f));
EXPECT_FLOAT_EQ(2.f, curve->GetValue(0.f));
EXPECT_FLOAT_EQ(3.f, curve->GetValue(0.5f));
EXPECT_FLOAT_EQ(4.f, curve->GetValue(1.f));
EXPECT_FLOAT_EQ(6.f, curve->GetValue(1.5f));
EXPECT_FLOAT_EQ(8.f, curve->GetValue(2.f));
EXPECT_FLOAT_EQ(8.f, curve->GetValue(3.f));
}
// Tests that a float animation with multiple keys at a given time works sanely.
TEST(KeyframedAnimationCurveTest, RepeatedFloatKeyTimes) {
scoped_ptr<KeyframedFloatAnimationCurve> curve(
KeyframedFloatAnimationCurve::Create());
curve->AddKeyframe(
FloatKeyframe::Create(0.0, 4.f, scoped_ptr<TimingFunction>()));
curve->AddKeyframe(
FloatKeyframe::Create(1.0, 4.f, scoped_ptr<TimingFunction>()));
curve->AddKeyframe(
FloatKeyframe::Create(1.0, 6.f, scoped_ptr<TimingFunction>()));
curve->AddKeyframe(
FloatKeyframe::Create(2.0, 6.f, scoped_ptr<TimingFunction>()));
EXPECT_FLOAT_EQ(4.f, curve->GetValue(-1.f));
EXPECT_FLOAT_EQ(4.f, curve->GetValue(0.f));
EXPECT_FLOAT_EQ(4.f, curve->GetValue(0.5f));
// There is a discontinuity at 1. Any value between 4 and 6 is valid.
float value = curve->GetValue(1.f);
EXPECT_TRUE(value >= 4 && value <= 6);
EXPECT_FLOAT_EQ(6.f, curve->GetValue(1.5f));
EXPECT_FLOAT_EQ(6.f, curve->GetValue(2.f));
EXPECT_FLOAT_EQ(6.f, curve->GetValue(3.f));
}
// Tests that a transform animation with one keyframe works as expected.
TEST(KeyframedAnimationCurveTest, OneTransformKeyframe) {
scoped_ptr<KeyframedTransformAnimationCurve> curve(
KeyframedTransformAnimationCurve::Create());
TransformOperations operations;
operations.AppendTranslate(2.f, 0.f, 0.f);
curve->AddKeyframe(
TransformKeyframe::Create(0.f, operations, scoped_ptr<TimingFunction>()));
ExpectTranslateX(2.f, curve->GetValue(-1.f));
ExpectTranslateX(2.f, curve->GetValue(0.f));
ExpectTranslateX(2.f, curve->GetValue(0.5f));
ExpectTranslateX(2.f, curve->GetValue(1.f));
ExpectTranslateX(2.f, curve->GetValue(2.f));
}
// Tests that a transform animation with two keyframes works as expected.
TEST(KeyframedAnimationCurveTest, TwoTransformKeyframe) {
scoped_ptr<KeyframedTransformAnimationCurve> curve(
KeyframedTransformAnimationCurve::Create());
TransformOperations operations1;
operations1.AppendTranslate(2.f, 0.f, 0.f);
TransformOperations operations2;
operations2.AppendTranslate(4.f, 0.f, 0.f);
curve->AddKeyframe(TransformKeyframe::Create(
0.f, operations1, scoped_ptr<TimingFunction>()));
curve->AddKeyframe(TransformKeyframe::Create(
1.f, operations2, scoped_ptr<TimingFunction>()));
ExpectTranslateX(2.f, curve->GetValue(-1.f));
ExpectTranslateX(2.f, curve->GetValue(0.f));
ExpectTranslateX(3.f, curve->GetValue(0.5f));
ExpectTranslateX(4.f, curve->GetValue(1.f));
ExpectTranslateX(4.f, curve->GetValue(2.f));
}
// Tests that a transform animation with three keyframes works as expected.
TEST(KeyframedAnimationCurveTest, ThreeTransformKeyframe) {
scoped_ptr<KeyframedTransformAnimationCurve> curve(
KeyframedTransformAnimationCurve::Create());
TransformOperations operations1;
operations1.AppendTranslate(2.f, 0.f, 0.f);
TransformOperations operations2;
operations2.AppendTranslate(4.f, 0.f, 0.f);
TransformOperations operations3;
operations3.AppendTranslate(8.f, 0.f, 0.f);
curve->AddKeyframe(TransformKeyframe::Create(
0.f, operations1, scoped_ptr<TimingFunction>()));
curve->AddKeyframe(TransformKeyframe::Create(
1.f, operations2, scoped_ptr<TimingFunction>()));
curve->AddKeyframe(TransformKeyframe::Create(
2.f, operations3, scoped_ptr<TimingFunction>()));
ExpectTranslateX(2.f, curve->GetValue(-1.f));
ExpectTranslateX(2.f, curve->GetValue(0.f));
ExpectTranslateX(3.f, curve->GetValue(0.5f));
ExpectTranslateX(4.f, curve->GetValue(1.f));
ExpectTranslateX(6.f, curve->GetValue(1.5f));
ExpectTranslateX(8.f, curve->GetValue(2.f));
ExpectTranslateX(8.f, curve->GetValue(3.f));
}
// Tests that a transform animation with multiple keys at a given time works
// sanely.
TEST(KeyframedAnimationCurveTest, RepeatedTransformKeyTimes) {
scoped_ptr<KeyframedTransformAnimationCurve> curve(
KeyframedTransformAnimationCurve::Create());
// A step function.
TransformOperations operations1;
operations1.AppendTranslate(4.f, 0.f, 0.f);
TransformOperations operations2;
operations2.AppendTranslate(4.f, 0.f, 0.f);
TransformOperations operations3;
operations3.AppendTranslate(6.f, 0.f, 0.f);
TransformOperations operations4;
operations4.AppendTranslate(6.f, 0.f, 0.f);
curve->AddKeyframe(TransformKeyframe::Create(
0.f, operations1, scoped_ptr<TimingFunction>()));
curve->AddKeyframe(TransformKeyframe::Create(
1.f, operations2, scoped_ptr<TimingFunction>()));
curve->AddKeyframe(TransformKeyframe::Create(
1.f, operations3, scoped_ptr<TimingFunction>()));
curve->AddKeyframe(TransformKeyframe::Create(
2.f, operations4, scoped_ptr<TimingFunction>()));
ExpectTranslateX(4.f, curve->GetValue(-1.f));
ExpectTranslateX(4.f, curve->GetValue(0.f));
ExpectTranslateX(4.f, curve->GetValue(0.5f));
// There is a discontinuity at 1. Any value between 4 and 6 is valid.
gfx::Transform value = curve->GetValue(1.f);
EXPECT_GE(value.matrix().get(0, 3), 4.f);
EXPECT_LE(value.matrix().get(0, 3), 6.f);
ExpectTranslateX(6.f, curve->GetValue(1.5f));
ExpectTranslateX(6.f, curve->GetValue(2.f));
ExpectTranslateX(6.f, curve->GetValue(3.f));
}
// Tests that a filter animation with one keyframe works as expected.
TEST(KeyframedAnimationCurveTest, OneFilterKeyframe) {
scoped_ptr<KeyframedFilterAnimationCurve> curve(
KeyframedFilterAnimationCurve::Create());
FilterOperations operations;
operations.Append(FilterOperation::CreateBrightnessFilter(2.f));
curve->AddKeyframe(
FilterKeyframe::Create(0.f, operations, scoped_ptr<TimingFunction>()));
ExpectBrightness(2.f, curve->GetValue(-1.f));
ExpectBrightness(2.f, curve->GetValue(0.f));
ExpectBrightness(2.f, curve->GetValue(0.5f));
ExpectBrightness(2.f, curve->GetValue(1.f));
ExpectBrightness(2.f, curve->GetValue(2.f));
}
// Tests that a filter animation with two keyframes works as expected.
TEST(KeyframedAnimationCurveTest, TwoFilterKeyframe) {
scoped_ptr<KeyframedFilterAnimationCurve> curve(
KeyframedFilterAnimationCurve::Create());
FilterOperations operations1;
operations1.Append(FilterOperation::CreateBrightnessFilter(2.f));
FilterOperations operations2;
operations2.Append(FilterOperation::CreateBrightnessFilter(4.f));
curve->AddKeyframe(FilterKeyframe::Create(
0.f, operations1, scoped_ptr<TimingFunction>()));
curve->AddKeyframe(FilterKeyframe::Create(
1.f, operations2, scoped_ptr<TimingFunction>()));
ExpectBrightness(2.f, curve->GetValue(-1.f));
ExpectBrightness(2.f, curve->GetValue(0.f));
ExpectBrightness(3.f, curve->GetValue(0.5f));
ExpectBrightness(4.f, curve->GetValue(1.f));
ExpectBrightness(4.f, curve->GetValue(2.f));
}
// Tests that a filter animation with three keyframes works as expected.
TEST(KeyframedAnimationCurveTest, ThreeFilterKeyframe) {
scoped_ptr<KeyframedFilterAnimationCurve> curve(
KeyframedFilterAnimationCurve::Create());
FilterOperations operations1;
operations1.Append(FilterOperation::CreateBrightnessFilter(2.f));
FilterOperations operations2;
operations2.Append(FilterOperation::CreateBrightnessFilter(4.f));
FilterOperations operations3;
operations3.Append(FilterOperation::CreateBrightnessFilter(8.f));
curve->AddKeyframe(FilterKeyframe::Create(
0.f, operations1, scoped_ptr<TimingFunction>()));
curve->AddKeyframe(FilterKeyframe::Create(
1.f, operations2, scoped_ptr<TimingFunction>()));
curve->AddKeyframe(FilterKeyframe::Create(
2.f, operations3, scoped_ptr<TimingFunction>()));
ExpectBrightness(2.f, curve->GetValue(-1.f));
ExpectBrightness(2.f, curve->GetValue(0.f));
ExpectBrightness(3.f, curve->GetValue(0.5f));
ExpectBrightness(4.f, curve->GetValue(1.f));
ExpectBrightness(6.f, curve->GetValue(1.5f));
ExpectBrightness(8.f, curve->GetValue(2.f));
ExpectBrightness(8.f, curve->GetValue(3.f));
}
// Tests that a filter animation with multiple keys at a given time works
// sanely.
TEST(KeyframedAnimationCurveTest, RepeatedFilterKeyTimes) {
scoped_ptr<KeyframedFilterAnimationCurve> curve(
KeyframedFilterAnimationCurve::Create());
// A step function.
FilterOperations operations1;
operations1.Append(FilterOperation::CreateBrightnessFilter(4.f));
FilterOperations operations2;
operations2.Append(FilterOperation::CreateBrightnessFilter(4.f));
FilterOperations operations3;
operations3.Append(FilterOperation::CreateBrightnessFilter(6.f));
FilterOperations operations4;
operations4.Append(FilterOperation::CreateBrightnessFilter(6.f));
curve->AddKeyframe(FilterKeyframe::Create(
0.f, operations1, scoped_ptr<TimingFunction>()));
curve->AddKeyframe(FilterKeyframe::Create(
1.f, operations2, scoped_ptr<TimingFunction>()));
curve->AddKeyframe(FilterKeyframe::Create(
1.f, operations3, scoped_ptr<TimingFunction>()));
curve->AddKeyframe(FilterKeyframe::Create(
2.f, operations4, scoped_ptr<TimingFunction>()));
ExpectBrightness(4.f, curve->GetValue(-1.f));
ExpectBrightness(4.f, curve->GetValue(0.f));
ExpectBrightness(4.f, curve->GetValue(0.5f));
// There is a discontinuity at 1. Any value between 4 and 6 is valid.
FilterOperations value = curve->GetValue(1.f);
EXPECT_EQ(1u, value.size());
EXPECT_EQ(FilterOperation::BRIGHTNESS, value.at(0).type());
EXPECT_GE(value.at(0).amount(), 4);
EXPECT_LE(value.at(0).amount(), 6);
ExpectBrightness(6.f, curve->GetValue(1.5f));
ExpectBrightness(6.f, curve->GetValue(2.f));
ExpectBrightness(6.f, curve->GetValue(3.f));
}
// Tests that the keyframes may be added out of order.
TEST(KeyframedAnimationCurveTest, UnsortedKeyframes) {
scoped_ptr<KeyframedFloatAnimationCurve> curve(
KeyframedFloatAnimationCurve::Create());
curve->AddKeyframe(
FloatKeyframe::Create(2.0, 8.f, scoped_ptr<TimingFunction>()));
curve->AddKeyframe(
FloatKeyframe::Create(0.0, 2.f, scoped_ptr<TimingFunction>()));
curve->AddKeyframe(
FloatKeyframe::Create(1.0, 4.f, scoped_ptr<TimingFunction>()));
EXPECT_FLOAT_EQ(2.f, curve->GetValue(-1.f));
EXPECT_FLOAT_EQ(2.f, curve->GetValue(0.f));
EXPECT_FLOAT_EQ(3.f, curve->GetValue(0.5f));
EXPECT_FLOAT_EQ(4.f, curve->GetValue(1.f));
EXPECT_FLOAT_EQ(6.f, curve->GetValue(1.5f));
EXPECT_FLOAT_EQ(8.f, curve->GetValue(2.f));
EXPECT_FLOAT_EQ(8.f, curve->GetValue(3.f));
}
// Tests that a cubic bezier timing function works as expected.
TEST(KeyframedAnimationCurveTest, CubicBezierTimingFunction) {
scoped_ptr<KeyframedFloatAnimationCurve> curve(
KeyframedFloatAnimationCurve::Create());
curve->AddKeyframe(FloatKeyframe::Create(
0.0,
0.f,
CubicBezierTimingFunction::Create(0.25f, 0.f, 0.75f, 1.f)
.PassAs<TimingFunction>()));
curve->AddKeyframe(
FloatKeyframe::Create(1.0, 1.f, scoped_ptr<TimingFunction>()));
EXPECT_FLOAT_EQ(0.f, curve->GetValue(0.f));
EXPECT_LT(0.f, curve->GetValue(0.25f));
EXPECT_GT(0.25f, curve->GetValue(0.25f));
EXPECT_NEAR(curve->GetValue(0.5f), 0.5f, 0.00015f);
EXPECT_LT(0.75f, curve->GetValue(0.75f));
EXPECT_GT(1.f, curve->GetValue(0.75f));
EXPECT_FLOAT_EQ(1.f, curve->GetValue(1.f));
}
// Tests that animated bounds are computed as expected.
TEST(KeyframedAnimationCurveTest, AnimatedBounds) {
scoped_ptr<KeyframedTransformAnimationCurve> curve(
KeyframedTransformAnimationCurve::Create());
TransformOperations operations1;
curve->AddKeyframe(TransformKeyframe::Create(
0.0, operations1, scoped_ptr<TimingFunction>()));
operations1.AppendTranslate(2.0, 3.0, -1.0);
curve->AddKeyframe(TransformKeyframe::Create(
0.5, operations1, scoped_ptr<TimingFunction>()));
TransformOperations operations2;
operations2.AppendTranslate(4.0, 1.0, 2.0);
curve->AddKeyframe(TransformKeyframe::Create(
1.0, operations2, EaseTimingFunction::Create()));
gfx::BoxF box(2.f, 3.f, 4.f, 1.f, 3.f, 2.f);
gfx::BoxF bounds;
EXPECT_TRUE(curve->AnimatedBoundsForBox(box, &bounds));
EXPECT_EQ(gfx::BoxF(2.f, 3.f, 3.f, 5.f, 6.f, 5.f).ToString(),
bounds.ToString());
}
} // namespace
} // namespace cc