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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 "cc/test/geometry_test_utils.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "ui/gfx/animation/tween.h"
#include "ui/gfx/geometry/box_f.h"
#include "ui/gfx/test/gfx_util.h"
namespace cc {
namespace {
void ExpectTranslateX(SkMScalar translate_x,
const TransformOperations& operations) {
EXPECT_FLOAT_EQ(translate_x, operations.Apply().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 color animation with one keyframe works as expected.
TEST(KeyframedAnimationCurveTest, OneColorKeyFrame) {
SkColor color = SkColorSetARGB(255, 255, 255, 255);
std::unique_ptr<KeyframedColorAnimationCurve> curve(
KeyframedColorAnimationCurve::Create());
curve->AddKeyframe(ColorKeyframe::Create(base::TimeDelta(), color, nullptr));
EXPECT_SKCOLOR_EQ(color,
curve->GetValue(base::TimeDelta::FromSecondsD(-1.f)));
EXPECT_SKCOLOR_EQ(color, curve->GetValue(base::TimeDelta::FromSecondsD(0.f)));
EXPECT_SKCOLOR_EQ(color,
curve->GetValue(base::TimeDelta::FromSecondsD(0.5f)));
EXPECT_SKCOLOR_EQ(color, curve->GetValue(base::TimeDelta::FromSecondsD(1.f)));
EXPECT_SKCOLOR_EQ(color, curve->GetValue(base::TimeDelta::FromSecondsD(2.f)));
}
// Tests that a color animation with two keyframes works as expected.
TEST(KeyframedAnimationCurveTest, TwoColorKeyFrame) {
SkColor color_a = SkColorSetARGB(255, 255, 0, 0);
SkColor color_b = SkColorSetARGB(255, 0, 255, 0);
SkColor color_midpoint = gfx::Tween::ColorValueBetween(0.5, color_a, color_b);
std::unique_ptr<KeyframedColorAnimationCurve> curve(
KeyframedColorAnimationCurve::Create());
curve->AddKeyframe(
ColorKeyframe::Create(base::TimeDelta(), color_a, nullptr));
curve->AddKeyframe(ColorKeyframe::Create(base::TimeDelta::FromSecondsD(1.0),
color_b, nullptr));
EXPECT_SKCOLOR_EQ(color_a,
curve->GetValue(base::TimeDelta::FromSecondsD(-1.f)));
EXPECT_SKCOLOR_EQ(color_a,
curve->GetValue(base::TimeDelta::FromSecondsD(0.f)));
EXPECT_SKCOLOR_EQ(color_midpoint,
curve->GetValue(base::TimeDelta::FromSecondsD(0.5f)));
EXPECT_SKCOLOR_EQ(color_b,
curve->GetValue(base::TimeDelta::FromSecondsD(1.f)));
EXPECT_SKCOLOR_EQ(color_b,
curve->GetValue(base::TimeDelta::FromSecondsD(2.f)));
}
// Tests that a color animation with three keyframes works as expected.
TEST(KeyframedAnimationCurveTest, ThreeColorKeyFrame) {
SkColor color_a = SkColorSetARGB(255, 255, 0, 0);
SkColor color_b = SkColorSetARGB(255, 0, 255, 0);
SkColor color_c = SkColorSetARGB(255, 0, 0, 255);
SkColor color_midpoint1 =
gfx::Tween::ColorValueBetween(0.5, color_a, color_b);
SkColor color_midpoint2 =
gfx::Tween::ColorValueBetween(0.5, color_b, color_c);
std::unique_ptr<KeyframedColorAnimationCurve> curve(
KeyframedColorAnimationCurve::Create());
curve->AddKeyframe(
ColorKeyframe::Create(base::TimeDelta(), color_a, nullptr));
curve->AddKeyframe(ColorKeyframe::Create(base::TimeDelta::FromSecondsD(1.0),
color_b, nullptr));
curve->AddKeyframe(ColorKeyframe::Create(base::TimeDelta::FromSecondsD(2.0),
color_c, nullptr));
EXPECT_SKCOLOR_EQ(color_a,
curve->GetValue(base::TimeDelta::FromSecondsD(-1.f)));
EXPECT_SKCOLOR_EQ(color_a,
curve->GetValue(base::TimeDelta::FromSecondsD(0.f)));
EXPECT_SKCOLOR_EQ(color_midpoint1,
curve->GetValue(base::TimeDelta::FromSecondsD(0.5f)));
EXPECT_SKCOLOR_EQ(color_b,
curve->GetValue(base::TimeDelta::FromSecondsD(1.f)));
EXPECT_SKCOLOR_EQ(color_midpoint2,
curve->GetValue(base::TimeDelta::FromSecondsD(1.5f)));
EXPECT_SKCOLOR_EQ(color_c,
curve->GetValue(base::TimeDelta::FromSecondsD(2.f)));
EXPECT_SKCOLOR_EQ(color_c,
curve->GetValue(base::TimeDelta::FromSecondsD(3.f)));
}
// Tests that a color animation with multiple keys at a given time works sanely.
TEST(KeyframedAnimationCurveTest, RepeatedColorKeyFrame) {
SkColor color_a = SkColorSetARGB(255, 64, 0, 0);
SkColor color_b = SkColorSetARGB(255, 192, 0, 0);
std::unique_ptr<KeyframedColorAnimationCurve> curve(
KeyframedColorAnimationCurve::Create());
curve->AddKeyframe(
ColorKeyframe::Create(base::TimeDelta(), color_a, nullptr));
curve->AddKeyframe(ColorKeyframe::Create(base::TimeDelta::FromSecondsD(1.0),
color_a, nullptr));
curve->AddKeyframe(ColorKeyframe::Create(base::TimeDelta::FromSecondsD(1.0),
color_b, nullptr));
curve->AddKeyframe(ColorKeyframe::Create(base::TimeDelta::FromSecondsD(2.0),
color_b, nullptr));
EXPECT_SKCOLOR_EQ(color_a,
curve->GetValue(base::TimeDelta::FromSecondsD(-1.f)));
EXPECT_SKCOLOR_EQ(color_a,
curve->GetValue(base::TimeDelta::FromSecondsD(0.f)));
EXPECT_SKCOLOR_EQ(color_a,
curve->GetValue(base::TimeDelta::FromSecondsD(0.5f)));
SkColor value = curve->GetValue(base::TimeDelta::FromSecondsD(1.0f));
EXPECT_EQ(255u, SkColorGetA(value));
int red_value = SkColorGetR(value);
EXPECT_LE(64, red_value);
EXPECT_GE(192, red_value);
EXPECT_SKCOLOR_EQ(color_b,
curve->GetValue(base::TimeDelta::FromSecondsD(1.5f)));
EXPECT_SKCOLOR_EQ(color_b,
curve->GetValue(base::TimeDelta::FromSecondsD(2.f)));
EXPECT_SKCOLOR_EQ(color_b,
curve->GetValue(base::TimeDelta::FromSecondsD(3.f)));
}
// Tests that a float animation with one keyframe works as expected.
TEST(KeyframedAnimationCurveTest, OneFloatKeyframe) {
std::unique_ptr<KeyframedFloatAnimationCurve> curve(
KeyframedFloatAnimationCurve::Create());
curve->AddKeyframe(FloatKeyframe::Create(base::TimeDelta(), 2.f, nullptr));
EXPECT_FLOAT_EQ(2.f, curve->GetValue(base::TimeDelta::FromSecondsD(-1.f)));
EXPECT_FLOAT_EQ(2.f, curve->GetValue(base::TimeDelta::FromSecondsD(0.f)));
EXPECT_FLOAT_EQ(2.f, curve->GetValue(base::TimeDelta::FromSecondsD(0.5f)));
EXPECT_FLOAT_EQ(2.f, curve->GetValue(base::TimeDelta::FromSecondsD(1.f)));
EXPECT_FLOAT_EQ(2.f, curve->GetValue(base::TimeDelta::FromSecondsD(2.f)));
}
// Tests that a float animation with two keyframes works as expected.
TEST(KeyframedAnimationCurveTest, TwoFloatKeyframe) {
std::unique_ptr<KeyframedFloatAnimationCurve> curve(
KeyframedFloatAnimationCurve::Create());
curve->AddKeyframe(FloatKeyframe::Create(base::TimeDelta(), 2.f, nullptr));
curve->AddKeyframe(
FloatKeyframe::Create(base::TimeDelta::FromSecondsD(1.0), 4.f, nullptr));
EXPECT_FLOAT_EQ(2.f, curve->GetValue(base::TimeDelta::FromSecondsD(-1.f)));
EXPECT_FLOAT_EQ(2.f, curve->GetValue(base::TimeDelta::FromSecondsD(0.f)));
EXPECT_FLOAT_EQ(3.f, curve->GetValue(base::TimeDelta::FromSecondsD(0.5f)));
EXPECT_FLOAT_EQ(4.f, curve->GetValue(base::TimeDelta::FromSecondsD(1.f)));
EXPECT_FLOAT_EQ(4.f, curve->GetValue(base::TimeDelta::FromSecondsD(2.f)));
}
// Tests that a float animation with three keyframes works as expected.
TEST(KeyframedAnimationCurveTest, ThreeFloatKeyframe) {
std::unique_ptr<KeyframedFloatAnimationCurve> curve(
KeyframedFloatAnimationCurve::Create());
curve->AddKeyframe(FloatKeyframe::Create(base::TimeDelta(), 2.f, nullptr));
curve->AddKeyframe(
FloatKeyframe::Create(base::TimeDelta::FromSecondsD(1.0), 4.f, nullptr));
curve->AddKeyframe(
FloatKeyframe::Create(base::TimeDelta::FromSecondsD(2.0), 8.f, nullptr));
EXPECT_FLOAT_EQ(2.f, curve->GetValue(base::TimeDelta::FromSecondsD(-1.f)));
EXPECT_FLOAT_EQ(2.f, curve->GetValue(base::TimeDelta::FromSecondsD(0.f)));
EXPECT_FLOAT_EQ(3.f, curve->GetValue(base::TimeDelta::FromSecondsD(0.5f)));
EXPECT_FLOAT_EQ(4.f, curve->GetValue(base::TimeDelta::FromSecondsD(1.f)));
EXPECT_FLOAT_EQ(6.f, curve->GetValue(base::TimeDelta::FromSecondsD(1.5f)));
EXPECT_FLOAT_EQ(8.f, curve->GetValue(base::TimeDelta::FromSecondsD(2.f)));
EXPECT_FLOAT_EQ(8.f, curve->GetValue(base::TimeDelta::FromSecondsD(3.f)));
}
// Tests that a float animation with multiple keys at a given time works sanely.
TEST(KeyframedAnimationCurveTest, RepeatedFloatKeyTimes) {
std::unique_ptr<KeyframedFloatAnimationCurve> curve(
KeyframedFloatAnimationCurve::Create());
curve->AddKeyframe(FloatKeyframe::Create(base::TimeDelta(), 4.f, nullptr));
curve->AddKeyframe(
FloatKeyframe::Create(base::TimeDelta::FromSecondsD(1.0), 4.f, nullptr));
curve->AddKeyframe(
FloatKeyframe::Create(base::TimeDelta::FromSecondsD(1.0), 6.f, nullptr));
curve->AddKeyframe(
FloatKeyframe::Create(base::TimeDelta::FromSecondsD(2.0), 6.f, nullptr));
EXPECT_FLOAT_EQ(4.f, curve->GetValue(base::TimeDelta::FromSecondsD(-1.f)));
EXPECT_FLOAT_EQ(4.f, curve->GetValue(base::TimeDelta::FromSecondsD(0.f)));
EXPECT_FLOAT_EQ(4.f, curve->GetValue(base::TimeDelta::FromSecondsD(0.5f)));
// There is a discontinuity at 1. Any value between 4 and 6 is valid.
float value = curve->GetValue(base::TimeDelta::FromSecondsD(1.f));
EXPECT_TRUE(value >= 4 && value <= 6);
EXPECT_FLOAT_EQ(6.f, curve->GetValue(base::TimeDelta::FromSecondsD(1.5f)));
EXPECT_FLOAT_EQ(6.f, curve->GetValue(base::TimeDelta::FromSecondsD(2.f)));
EXPECT_FLOAT_EQ(6.f, curve->GetValue(base::TimeDelta::FromSecondsD(3.f)));
}
// Tests that a transform animation with one keyframe works as expected.
TEST(KeyframedAnimationCurveTest, OneTransformKeyframe) {
std::unique_ptr<KeyframedTransformAnimationCurve> curve(
KeyframedTransformAnimationCurve::Create());
TransformOperations operations;
operations.AppendTranslate(2.f, 0.f, 0.f);
curve->AddKeyframe(
TransformKeyframe::Create(base::TimeDelta(), operations, nullptr));
ExpectTranslateX(2.f, curve->GetValue(base::TimeDelta::FromSecondsD(-1.f)));
ExpectTranslateX(2.f, curve->GetValue(base::TimeDelta::FromSecondsD(0.f)));
ExpectTranslateX(2.f, curve->GetValue(base::TimeDelta::FromSecondsD(0.5f)));
ExpectTranslateX(2.f, curve->GetValue(base::TimeDelta::FromSecondsD(1.f)));
ExpectTranslateX(2.f, curve->GetValue(base::TimeDelta::FromSecondsD(2.f)));
}
// Tests that a transform animation with two keyframes works as expected.
TEST(KeyframedAnimationCurveTest, TwoTransformKeyframe) {
std::unique_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(base::TimeDelta(), operations1, nullptr));
curve->AddKeyframe(TransformKeyframe::Create(
base::TimeDelta::FromSecondsD(1.0), operations2, nullptr));
ExpectTranslateX(2.f, curve->GetValue(base::TimeDelta::FromSecondsD(-1.f)));
ExpectTranslateX(2.f, curve->GetValue(base::TimeDelta::FromSecondsD(0.f)));
ExpectTranslateX(3.f, curve->GetValue(base::TimeDelta::FromSecondsD(0.5f)));
ExpectTranslateX(4.f, curve->GetValue(base::TimeDelta::FromSecondsD(1.f)));
ExpectTranslateX(4.f, curve->GetValue(base::TimeDelta::FromSecondsD(2.f)));
}
// Tests that a transform animation with three keyframes works as expected.
TEST(KeyframedAnimationCurveTest, ThreeTransformKeyframe) {
std::unique_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(base::TimeDelta(), operations1, nullptr));
curve->AddKeyframe(TransformKeyframe::Create(
base::TimeDelta::FromSecondsD(1.0), operations2, nullptr));
curve->AddKeyframe(TransformKeyframe::Create(
base::TimeDelta::FromSecondsD(2.0), operations3, nullptr));
ExpectTranslateX(2.f, curve->GetValue(base::TimeDelta::FromSecondsD(-1.f)));
ExpectTranslateX(2.f, curve->GetValue(base::TimeDelta::FromSecondsD(0.f)));
ExpectTranslateX(3.f, curve->GetValue(base::TimeDelta::FromSecondsD(0.5f)));
ExpectTranslateX(4.f, curve->GetValue(base::TimeDelta::FromSecondsD(1.f)));
ExpectTranslateX(6.f, curve->GetValue(base::TimeDelta::FromSecondsD(1.5f)));
ExpectTranslateX(8.f, curve->GetValue(base::TimeDelta::FromSecondsD(2.f)));
ExpectTranslateX(8.f, curve->GetValue(base::TimeDelta::FromSecondsD(3.f)));
}
// Tests that a transform animation with multiple keys at a given time works
// sanely.
TEST(KeyframedAnimationCurveTest, RepeatedTransformKeyTimes) {
std::unique_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(base::TimeDelta(), operations1, nullptr));
curve->AddKeyframe(TransformKeyframe::Create(
base::TimeDelta::FromSecondsD(1.0), operations2, nullptr));
curve->AddKeyframe(TransformKeyframe::Create(
base::TimeDelta::FromSecondsD(1.0), operations3, nullptr));
curve->AddKeyframe(TransformKeyframe::Create(
base::TimeDelta::FromSecondsD(2.0), operations4, nullptr));
ExpectTranslateX(4.f, curve->GetValue(base::TimeDelta::FromSecondsD(-1.f)));
ExpectTranslateX(4.f, curve->GetValue(base::TimeDelta::FromSecondsD(0.f)));
ExpectTranslateX(4.f, curve->GetValue(base::TimeDelta::FromSecondsD(0.5f)));
// There is a discontinuity at 1. Any value between 4 and 6 is valid.
gfx::Transform value =
curve->GetValue(base::TimeDelta::FromSecondsD(1.f)).Apply();
EXPECT_GE(value.matrix().get(0, 3), 4.f);
EXPECT_LE(value.matrix().get(0, 3), 6.f);
ExpectTranslateX(6.f, curve->GetValue(base::TimeDelta::FromSecondsD(1.5f)));
ExpectTranslateX(6.f, curve->GetValue(base::TimeDelta::FromSecondsD(2.f)));
ExpectTranslateX(6.f, curve->GetValue(base::TimeDelta::FromSecondsD(3.f)));
}
// Tests that a discrete transform animation (e.g. where one or more keyframes
// is a non-invertible matrix) works as expected.
TEST(KeyframedAnimationCurveTest, DiscreteLinearTransformAnimation) {
gfx::Transform non_invertible_matrix(0, 0, 0, 0, 0, 0);
gfx::Transform identity_matrix;
std::unique_ptr<KeyframedTransformAnimationCurve> curve(
KeyframedTransformAnimationCurve::Create());
TransformOperations operations1;
operations1.AppendMatrix(non_invertible_matrix);
TransformOperations operations2;
operations2.AppendMatrix(identity_matrix);
TransformOperations operations3;
operations3.AppendMatrix(non_invertible_matrix);
curve->AddKeyframe(
TransformKeyframe::Create(base::TimeDelta(), operations1, nullptr));
curve->AddKeyframe(TransformKeyframe::Create(
base::TimeDelta::FromSecondsD(1.0), operations2, nullptr));
curve->AddKeyframe(TransformKeyframe::Create(
base::TimeDelta::FromSecondsD(2.0), operations3, nullptr));
TransformOperations result;
// Between 0 and 0.5 seconds, the first keyframe should be returned.
result = curve->GetValue(base::TimeDelta::FromSecondsD(0.01f));
EXPECT_TRANSFORMATION_MATRIX_EQ(non_invertible_matrix, result.Apply());
result = curve->GetValue(base::TimeDelta::FromSecondsD(0.49f));
EXPECT_TRANSFORMATION_MATRIX_EQ(non_invertible_matrix, result.Apply());
// Between 0.5 and 1.5 seconds, the middle keyframe should be returned.
result = curve->GetValue(base::TimeDelta::FromSecondsD(0.5f));
EXPECT_TRANSFORMATION_MATRIX_EQ(identity_matrix, result.Apply());
result = curve->GetValue(base::TimeDelta::FromSecondsD(1.49f));
EXPECT_TRANSFORMATION_MATRIX_EQ(identity_matrix, result.Apply());
// Between 1.5 and 2.0 seconds, the last keyframe should be returned.
result = curve->GetValue(base::TimeDelta::FromSecondsD(1.5f));
EXPECT_TRANSFORMATION_MATRIX_EQ(non_invertible_matrix, result.Apply());
result = curve->GetValue(base::TimeDelta::FromSecondsD(2.0f));
EXPECT_TRANSFORMATION_MATRIX_EQ(non_invertible_matrix, result.Apply());
}
TEST(KeyframedAnimationCurveTest, DiscreteCubicBezierTransformAnimation) {
gfx::Transform non_invertible_matrix(0, 0, 0, 0, 0, 0);
gfx::Transform identity_matrix;
std::unique_ptr<KeyframedTransformAnimationCurve> curve(
KeyframedTransformAnimationCurve::Create());
TransformOperations operations1;
operations1.AppendMatrix(non_invertible_matrix);
TransformOperations operations2;
operations2.AppendMatrix(identity_matrix);
TransformOperations operations3;
operations3.AppendMatrix(non_invertible_matrix);
// The cubic-bezier here is a nice fairly strong ease-in curve, where 50%
// progression is at approximately 85% of the time.
curve->AddKeyframe(TransformKeyframe::Create(
base::TimeDelta(), operations1,
CubicBezierTimingFunction::Create(0.75f, 0.25f, 0.9f, 0.4f)));
curve->AddKeyframe(TransformKeyframe::Create(
base::TimeDelta::FromSecondsD(1.0), operations2,
CubicBezierTimingFunction::Create(0.75f, 0.25f, 0.9f, 0.4f)));
curve->AddKeyframe(TransformKeyframe::Create(
base::TimeDelta::FromSecondsD(2.0), operations3,
CubicBezierTimingFunction::Create(0.75f, 0.25f, 0.9f, 0.4f)));
TransformOperations result;
// Due to the cubic-bezier, the first keyframe is returned almost all the way
// to 1 second.
result = curve->GetValue(base::TimeDelta::FromSecondsD(0.01f));
EXPECT_TRANSFORMATION_MATRIX_EQ(non_invertible_matrix, result.Apply());
result = curve->GetValue(base::TimeDelta::FromSecondsD(0.8f));
EXPECT_TRANSFORMATION_MATRIX_EQ(non_invertible_matrix, result.Apply());
// Between ~0.85 and ~1.85 seconds, the middle keyframe should be returned.
result = curve->GetValue(base::TimeDelta::FromSecondsD(0.85f));
EXPECT_TRANSFORMATION_MATRIX_EQ(identity_matrix, result.Apply());
result = curve->GetValue(base::TimeDelta::FromSecondsD(1.8f));
EXPECT_TRANSFORMATION_MATRIX_EQ(identity_matrix, result.Apply());
// Finally the last keyframe only takes effect after ~1.85 seconds.
result = curve->GetValue(base::TimeDelta::FromSecondsD(1.85f));
EXPECT_TRANSFORMATION_MATRIX_EQ(non_invertible_matrix, result.Apply());
result = curve->GetValue(base::TimeDelta::FromSecondsD(2.0f));
EXPECT_TRANSFORMATION_MATRIX_EQ(non_invertible_matrix, result.Apply());
}
// Tests that a filter animation with one keyframe works as expected.
TEST(KeyframedAnimationCurveTest, OneFilterKeyframe) {
std::unique_ptr<KeyframedFilterAnimationCurve> curve(
KeyframedFilterAnimationCurve::Create());
FilterOperations operations;
operations.Append(FilterOperation::CreateBrightnessFilter(2.f));
curve->AddKeyframe(
FilterKeyframe::Create(base::TimeDelta(), operations, nullptr));
ExpectBrightness(2.f, curve->GetValue(base::TimeDelta::FromSecondsD(-1.f)));
ExpectBrightness(2.f, curve->GetValue(base::TimeDelta::FromSecondsD(0.f)));
ExpectBrightness(2.f, curve->GetValue(base::TimeDelta::FromSecondsD(0.5f)));
ExpectBrightness(2.f, curve->GetValue(base::TimeDelta::FromSecondsD(1.f)));
ExpectBrightness(2.f, curve->GetValue(base::TimeDelta::FromSecondsD(2.f)));
}
// Tests that a filter animation with two keyframes works as expected.
TEST(KeyframedAnimationCurveTest, TwoFilterKeyframe) {
std::unique_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(base::TimeDelta(), operations1, nullptr));
curve->AddKeyframe(FilterKeyframe::Create(base::TimeDelta::FromSecondsD(1.f),
operations2, nullptr));
ExpectBrightness(2.f, curve->GetValue(base::TimeDelta::FromSecondsD(-1.f)));
ExpectBrightness(2.f, curve->GetValue(base::TimeDelta::FromSecondsD(0.f)));
ExpectBrightness(3.f, curve->GetValue(base::TimeDelta::FromSecondsD(0.5f)));
ExpectBrightness(4.f, curve->GetValue(base::TimeDelta::FromSecondsD(1.f)));
ExpectBrightness(4.f, curve->GetValue(base::TimeDelta::FromSecondsD(2.f)));
}
// Tests that a filter animation with three keyframes works as expected.
TEST(KeyframedAnimationCurveTest, ThreeFilterKeyframe) {
std::unique_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(base::TimeDelta(), operations1, nullptr));
curve->AddKeyframe(FilterKeyframe::Create(base::TimeDelta::FromSecondsD(1.f),
operations2, nullptr));
curve->AddKeyframe(FilterKeyframe::Create(base::TimeDelta::FromSecondsD(2.f),
operations3, nullptr));
ExpectBrightness(2.f, curve->GetValue(base::TimeDelta::FromSecondsD(-1.f)));
ExpectBrightness(2.f, curve->GetValue(base::TimeDelta::FromSecondsD(0.f)));
ExpectBrightness(3.f, curve->GetValue(base::TimeDelta::FromSecondsD(0.5f)));
ExpectBrightness(4.f, curve->GetValue(base::TimeDelta::FromSecondsD(1.f)));
ExpectBrightness(6.f, curve->GetValue(base::TimeDelta::FromSecondsD(1.5f)));
ExpectBrightness(8.f, curve->GetValue(base::TimeDelta::FromSecondsD(2.f)));
ExpectBrightness(8.f, curve->GetValue(base::TimeDelta::FromSecondsD(3.f)));
}
// Tests that a filter animation with multiple keys at a given time works
// sanely.
TEST(KeyframedAnimationCurveTest, RepeatedFilterKeyTimes) {
std::unique_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(base::TimeDelta(), operations1, nullptr));
curve->AddKeyframe(FilterKeyframe::Create(base::TimeDelta::FromSecondsD(1.f),
operations2, nullptr));
curve->AddKeyframe(FilterKeyframe::Create(base::TimeDelta::FromSecondsD(1.f),
operations3, nullptr));
curve->AddKeyframe(FilterKeyframe::Create(base::TimeDelta::FromSecondsD(2.f),
operations4, nullptr));
ExpectBrightness(4.f, curve->GetValue(base::TimeDelta::FromSecondsD(-1.f)));
ExpectBrightness(4.f, curve->GetValue(base::TimeDelta::FromSecondsD(0.f)));
ExpectBrightness(4.f, curve->GetValue(base::TimeDelta::FromSecondsD(0.5f)));
// There is a discontinuity at 1. Any value between 4 and 6 is valid.
FilterOperations value = curve->GetValue(base::TimeDelta::FromSecondsD(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(base::TimeDelta::FromSecondsD(1.5f)));
ExpectBrightness(6.f, curve->GetValue(base::TimeDelta::FromSecondsD(2.f)));
ExpectBrightness(6.f, curve->GetValue(base::TimeDelta::FromSecondsD(3.f)));
}
// Tests that the keyframes may be added out of order.
TEST(KeyframedAnimationCurveTest, UnsortedKeyframes) {
std::unique_ptr<KeyframedFloatAnimationCurve> curve(
KeyframedFloatAnimationCurve::Create());
curve->AddKeyframe(
FloatKeyframe::Create(base::TimeDelta::FromSecondsD(2.f), 8.f, nullptr));
curve->AddKeyframe(FloatKeyframe::Create(base::TimeDelta(), 2.f, nullptr));
curve->AddKeyframe(
FloatKeyframe::Create(base::TimeDelta::FromSecondsD(1.f), 4.f, nullptr));
EXPECT_FLOAT_EQ(2.f, curve->GetValue(base::TimeDelta::FromSecondsD(-1.f)));
EXPECT_FLOAT_EQ(2.f, curve->GetValue(base::TimeDelta::FromSecondsD(0.f)));
EXPECT_FLOAT_EQ(3.f, curve->GetValue(base::TimeDelta::FromSecondsD(0.5f)));
EXPECT_FLOAT_EQ(4.f, curve->GetValue(base::TimeDelta::FromSecondsD(1.f)));
EXPECT_FLOAT_EQ(6.f, curve->GetValue(base::TimeDelta::FromSecondsD(1.5f)));
EXPECT_FLOAT_EQ(8.f, curve->GetValue(base::TimeDelta::FromSecondsD(2.f)));
EXPECT_FLOAT_EQ(8.f, curve->GetValue(base::TimeDelta::FromSecondsD(3.f)));
}
// Tests that a cubic bezier timing function works as expected.
TEST(KeyframedAnimationCurveTest, CubicBezierTimingFunction) {
std::unique_ptr<KeyframedFloatAnimationCurve> curve(
KeyframedFloatAnimationCurve::Create());
curve->AddKeyframe(FloatKeyframe::Create(
base::TimeDelta(), 0.f,
CubicBezierTimingFunction::Create(0.25f, 0.f, 0.75f, 1.f)));
curve->AddKeyframe(
FloatKeyframe::Create(base::TimeDelta::FromSecondsD(1.0), 1.f, nullptr));
EXPECT_FLOAT_EQ(0.f, curve->GetValue(base::TimeDelta::FromSecondsD(0.f)));
EXPECT_LT(0.f, curve->GetValue(base::TimeDelta::FromSecondsD(0.25f)));
EXPECT_GT(0.25f, curve->GetValue(base::TimeDelta::FromSecondsD(0.25f)));
EXPECT_NEAR(curve->GetValue(base::TimeDelta::FromSecondsD(0.5f)), 0.5f,
0.00015f);
EXPECT_LT(0.75f, curve->GetValue(base::TimeDelta::FromSecondsD(0.75f)));
EXPECT_GT(1.f, curve->GetValue(base::TimeDelta::FromSecondsD(0.75f)));
EXPECT_FLOAT_EQ(1.f, curve->GetValue(base::TimeDelta::FromSecondsD(1.f)));
}
// Tests a step timing function if the change of values occur at the start.
TEST(KeyframedAnimationCurveTest, StepsTimingFunctionStepAtStart) {
std::unique_ptr<KeyframedFloatAnimationCurve> curve(
KeyframedFloatAnimationCurve::Create());
const int num_steps = 36;
curve->AddKeyframe(FloatKeyframe::Create(
base::TimeDelta(), 0.f,
StepsTimingFunction::Create(num_steps,
StepsTimingFunction::StepPosition::START)));
curve->AddKeyframe(FloatKeyframe::Create(base::TimeDelta::FromSecondsD(1.0),
num_steps, nullptr));
const float time_threshold = 0.0001f;
for (float i = 0.f; i < num_steps; i += 1.f) {
const base::TimeDelta time1 =
base::TimeDelta::FromSecondsD(i / num_steps - time_threshold);
const base::TimeDelta time2 =
base::TimeDelta::FromSecondsD(i / num_steps + time_threshold);
EXPECT_FLOAT_EQ(std::ceil(i), curve->GetValue(time1));
EXPECT_FLOAT_EQ(std::ceil(i) + 1.f, curve->GetValue(time2));
}
EXPECT_FLOAT_EQ(num_steps,
curve->GetValue(base::TimeDelta::FromSecondsD(1.0)));
for (float i = 0.5f; i <= num_steps; i += 1.0f) {
const base::TimeDelta time = base::TimeDelta::FromSecondsD(i / num_steps);
EXPECT_FLOAT_EQ(std::ceil(i), curve->GetValue(time));
}
}
// Tests a step timing function if the change of values occur at the middle.
TEST(KeyframedAnimationCurveTest, StepsTimingFunctionStepAtMiddle) {
std::unique_ptr<KeyframedFloatAnimationCurve> curve(
KeyframedFloatAnimationCurve::Create());
const int num_steps = 36;
curve->AddKeyframe(FloatKeyframe::Create(
base::TimeDelta(), 0.f,
StepsTimingFunction::Create(num_steps,
StepsTimingFunction::StepPosition::MIDDLE)));
curve->AddKeyframe(FloatKeyframe::Create(base::TimeDelta::FromSecondsD(1.0),
num_steps, nullptr));
const float time_threshold = 0.0001f;
EXPECT_FLOAT_EQ(0.f, curve->GetValue(base::TimeDelta()));
for (float i = 0.5f; i < num_steps; i += 1.f) {
const base::TimeDelta time1 =
base::TimeDelta::FromSecondsD(i / num_steps - time_threshold);
const base::TimeDelta time2 =
base::TimeDelta::FromSecondsD(i / num_steps + time_threshold);
EXPECT_FLOAT_EQ(std::floor(i), curve->GetValue(time1));
EXPECT_FLOAT_EQ(std::floor(i) + 1.f, curve->GetValue(time2));
}
EXPECT_FLOAT_EQ(num_steps,
curve->GetValue(base::TimeDelta::FromSecondsD(1.0)));
for (float i = 0.25f; i <= num_steps; i += 1.0f) {
const base::TimeDelta time = base::TimeDelta::FromSecondsD(i / num_steps);
EXPECT_FLOAT_EQ(std::floor(i), curve->GetValue(time));
}
}
// Tests a step timing function if the change of values occur at the end.
TEST(KeyframedAnimationCurveTest, StepsTimingFunctionStepAtEnd) {
std::unique_ptr<KeyframedFloatAnimationCurve> curve(
KeyframedFloatAnimationCurve::Create());
const int num_steps = 36;
curve->AddKeyframe(FloatKeyframe::Create(
base::TimeDelta(), 0.f,
StepsTimingFunction::Create(num_steps,
StepsTimingFunction::StepPosition::END)));
curve->AddKeyframe(FloatKeyframe::Create(base::TimeDelta::FromSecondsD(1.0),
num_steps, nullptr));
const float time_threshold = 0.0001f;
EXPECT_FLOAT_EQ(0.f, curve->GetValue(base::TimeDelta()));
for (float i = 1.f; i <= num_steps; i += 1.f) {
const base::TimeDelta time1 =
base::TimeDelta::FromSecondsD(i / num_steps - time_threshold);
const base::TimeDelta time2 =
base::TimeDelta::FromSecondsD(i / num_steps + time_threshold);
EXPECT_FLOAT_EQ(std::floor(i) - 1.f, curve->GetValue(time1));
EXPECT_FLOAT_EQ(std::floor(i), curve->GetValue(time2));
}
EXPECT_FLOAT_EQ(num_steps,
curve->GetValue(base::TimeDelta::FromSecondsD(1.0)));
for (float i = 0.5f; i <= num_steps; i += 1.0f) {
const base::TimeDelta time = base::TimeDelta::FromSecondsD(i / num_steps);
EXPECT_FLOAT_EQ(std::floor(i), curve->GetValue(time));
}
}
// Tests a frames timing function.
TEST(KeyframedAnimationCurveTest, FramesTimingFunction) {
std::unique_ptr<KeyframedFloatAnimationCurve> curve(
KeyframedFloatAnimationCurve::Create());
curve->AddKeyframe(FloatKeyframe::Create(base::TimeDelta(), 0.f,
FramesTimingFunction::Create(5)));
curve->AddKeyframe(
FloatKeyframe::Create(base::TimeDelta::FromSecondsD(1.0), 1.f, nullptr));
struct Expected {
double time;
float value;
} expectations[] = {
{0.0, 0.f}, {0.1999, 0.f}, {0.2001, 0.25f}, {0.3999, 0.25f},
{0.4001, 0.5f}, {0.5999, 0.5f}, {0.6001, 0.75f}, {0.7999, 0.75f},
{0.8001, 1.f}, {1.0, 1.f},
};
for (const auto& expectation : expectations) {
EXPECT_FLOAT_EQ(
expectation.value,
curve->GetValue(base::TimeDelta::FromSecondsD(expectation.time)));
}
}
// Tests that animations that are translations are correctly identified.
TEST(KeyframedAnimationCurveTest, IsTranslation) {
std::unique_ptr<KeyframedTransformAnimationCurve> curve(
KeyframedTransformAnimationCurve::Create());
TransformOperations operations1;
curve->AddKeyframe(
TransformKeyframe::Create(base::TimeDelta(), operations1, nullptr));
operations1.AppendTranslate(2.0, 3.0, -1.0);
TransformOperations operations2;
operations2.AppendTranslate(4.0, 1.0, 2.0);
curve->AddKeyframe(TransformKeyframe::Create(
base::TimeDelta::FromSecondsD(1.f), operations2, nullptr));
EXPECT_TRUE(curve->IsTranslation());
TransformOperations operations3;
operations3.AppendScale(2.f, 2.f, 2.f);
curve->AddKeyframe(TransformKeyframe::Create(
base::TimeDelta::FromSecondsD(2.f), operations3, nullptr));
EXPECT_FALSE(curve->IsTranslation());
TransformOperations operations4;
operations3.AppendTranslate(2.f, 2.f, 2.f);
curve->AddKeyframe(TransformKeyframe::Create(
base::TimeDelta::FromSecondsD(3.f), operations4, nullptr));
EXPECT_FALSE(curve->IsTranslation());
}
// Tests that maximum target scale is computed as expected.
TEST(KeyframedAnimationCurveTest, MaximumTargetScale) {
std::unique_ptr<KeyframedTransformAnimationCurve> curve(
KeyframedTransformAnimationCurve::Create());
TransformOperations operations1;
curve->AddKeyframe(
TransformKeyframe::Create(base::TimeDelta(), operations1, nullptr));
operations1.AppendScale(2.f, -3.f, 1.f);
curve->AddKeyframe(TransformKeyframe::Create(
base::TimeDelta::FromSecondsD(1.f), operations1,
CubicBezierTimingFunction::CreatePreset(
CubicBezierTimingFunction::EaseType::EASE)));
float maximum_scale = 0.f;
EXPECT_TRUE(curve->MaximumTargetScale(true, &maximum_scale));
EXPECT_EQ(3.f, maximum_scale);
TransformOperations operations2;
operations2.AppendScale(6.f, 3.f, 2.f);
curve->AddKeyframe(TransformKeyframe::Create(
base::TimeDelta::FromSecondsD(2.f), operations2,
CubicBezierTimingFunction::CreatePreset(
CubicBezierTimingFunction::EaseType::EASE)));
EXPECT_TRUE(curve->MaximumTargetScale(true, &maximum_scale));
EXPECT_EQ(6.f, maximum_scale);
TransformOperations operations3;
operations3.AppendRotate(1.f, 0.f, 0.f, 90.f);
curve->AddKeyframe(TransformKeyframe::Create(
base::TimeDelta::FromSecondsD(3.f), operations3,
CubicBezierTimingFunction::CreatePreset(
CubicBezierTimingFunction::EaseType::EASE)));
EXPECT_TRUE(curve->MaximumTargetScale(true, &maximum_scale));
EXPECT_EQ(6.f, maximum_scale);
TransformOperations operations4;
operations4.AppendPerspective(3.f);
curve->AddKeyframe(TransformKeyframe::Create(
base::TimeDelta::FromSecondsD(4.f), operations4,
CubicBezierTimingFunction::CreatePreset(
CubicBezierTimingFunction::EaseType::EASE)));
EXPECT_FALSE(curve->MaximumTargetScale(true, &maximum_scale));
// The original scale is not used in computing the max.
std::unique_ptr<KeyframedTransformAnimationCurve> curve2(
KeyframedTransformAnimationCurve::Create());
TransformOperations operations5;
operations5.AppendScale(0.4f, 0.2f, 0.6f);
curve2->AddKeyframe(TransformKeyframe::Create(
base::TimeDelta(), operations5,
CubicBezierTimingFunction::CreatePreset(
CubicBezierTimingFunction::EaseType::EASE)));
TransformOperations operations6;
operations6.AppendScale(0.5f, 0.3f, -0.8f);
curve2->AddKeyframe(TransformKeyframe::Create(
base::TimeDelta::FromSecondsD(1.f), operations6,
CubicBezierTimingFunction::CreatePreset(
CubicBezierTimingFunction::EaseType::EASE)));
EXPECT_TRUE(curve2->MaximumTargetScale(true, &maximum_scale));
EXPECT_EQ(0.8f, maximum_scale);
EXPECT_TRUE(curve2->MaximumTargetScale(false, &maximum_scale));
EXPECT_EQ(0.6f, maximum_scale);
}
// Tests that starting animation scale is computed as expected.
TEST(KeyframedAnimationCurveTest, AnimationStartScale) {
std::unique_ptr<KeyframedTransformAnimationCurve> curve(
KeyframedTransformAnimationCurve::Create());
TransformOperations operations1;
curve->AddKeyframe(
TransformKeyframe::Create(base::TimeDelta(), operations1, nullptr));
operations1.AppendScale(2.f, -3.f, 1.f);
curve->AddKeyframe(TransformKeyframe::Create(
base::TimeDelta::FromSecondsD(1.f), operations1,
CubicBezierTimingFunction::CreatePreset(
CubicBezierTimingFunction::EaseType::EASE)));
float start_scale = 0.f;
// Forward direction
EXPECT_TRUE(curve->AnimationStartScale(true, &start_scale));
EXPECT_EQ(1.f, start_scale);
// Backward direction
EXPECT_TRUE(curve->AnimationStartScale(false, &start_scale));
EXPECT_EQ(3.f, start_scale);
TransformOperations operations2;
operations2.AppendScale(6.f, 3.f, 2.f);
curve->AddKeyframe(TransformKeyframe::Create(
base::TimeDelta::FromSecondsD(2.f), operations2,
CubicBezierTimingFunction::CreatePreset(
CubicBezierTimingFunction::EaseType::EASE)));
// Forward direction
EXPECT_TRUE(curve->AnimationStartScale(true, &start_scale));
EXPECT_EQ(1.f, start_scale);
// Backward direction
EXPECT_TRUE(curve->AnimationStartScale(false, &start_scale));
EXPECT_EQ(6.f, start_scale);
TransformOperations operations3;
operations3.AppendRotate(1.f, 0.f, 0.f, 90.f);
curve->AddKeyframe(TransformKeyframe::Create(
base::TimeDelta::FromSecondsD(3.f), operations3,
CubicBezierTimingFunction::CreatePreset(
CubicBezierTimingFunction::EaseType::EASE)));
EXPECT_TRUE(curve->AnimationStartScale(false, &start_scale));
EXPECT_EQ(1.f, start_scale);
TransformOperations operations4;
operations4.AppendPerspective(90.f);
curve->AddKeyframe(TransformKeyframe::Create(
base::TimeDelta::FromSecondsD(4.f), operations4,
CubicBezierTimingFunction::CreatePreset(
CubicBezierTimingFunction::EaseType::EASE)));
EXPECT_FALSE(curve->AnimationStartScale(false, &start_scale));
EXPECT_EQ(0.f, start_scale);
}
// Tests that an animation with a curve timing function works as expected.
TEST(KeyframedAnimationCurveTest, CurveTiming) {
std::unique_ptr<KeyframedFloatAnimationCurve> curve(
KeyframedFloatAnimationCurve::Create());
curve->AddKeyframe(FloatKeyframe::Create(base::TimeDelta(), 0.f, nullptr));
curve->AddKeyframe(
FloatKeyframe::Create(base::TimeDelta::FromSecondsD(1.f), 1.f, nullptr));
curve->SetTimingFunction(
CubicBezierTimingFunction::Create(0.75f, 0.f, 0.25f, 1.f));
EXPECT_FLOAT_EQ(0.f, curve->GetValue(base::TimeDelta::FromSecondsD(-1.f)));
EXPECT_FLOAT_EQ(0.f, curve->GetValue(base::TimeDelta::FromSecondsD(0.f)));
EXPECT_NEAR(0.05f, curve->GetValue(base::TimeDelta::FromSecondsD(0.25f)),
0.005f);
EXPECT_FLOAT_EQ(0.5f, curve->GetValue(base::TimeDelta::FromSecondsD(0.5f)));
EXPECT_NEAR(0.95f, curve->GetValue(base::TimeDelta::FromSecondsD(0.75f)),
0.005f);
EXPECT_FLOAT_EQ(1.f, curve->GetValue(base::TimeDelta::FromSecondsD(1.f)));
EXPECT_FLOAT_EQ(1.f, curve->GetValue(base::TimeDelta::FromSecondsD(2.f)));
}
// Tests that an animation with a curve and keyframe timing function works as
// expected.
TEST(KeyframedAnimationCurveTest, CurveAndKeyframeTiming) {
std::unique_ptr<KeyframedFloatAnimationCurve> curve(
KeyframedFloatAnimationCurve::Create());
curve->AddKeyframe(FloatKeyframe::Create(
base::TimeDelta(), 0.f,
CubicBezierTimingFunction::Create(0.35f, 0.f, 0.65f, 1.f)));
curve->AddKeyframe(
FloatKeyframe::Create(base::TimeDelta::FromSecondsD(1.f), 1.f, nullptr));
// Curve timing function producing outputs outside of range [0,1].
curve->SetTimingFunction(
CubicBezierTimingFunction::Create(0.5f, -0.5f, 0.5f, 1.5f));
EXPECT_FLOAT_EQ(0.f, curve->GetValue(base::TimeDelta::FromSecondsD(-1.f)));
EXPECT_FLOAT_EQ(0.f, curve->GetValue(base::TimeDelta::FromSecondsD(0.f)));
EXPECT_FLOAT_EQ(0.f, curve->GetValue(base::TimeDelta::FromSecondsD(
0.25f))); // Clamped. c(.25) < 0
EXPECT_NEAR(0.17f, curve->GetValue(base::TimeDelta::FromSecondsD(0.42f)),
0.005f); // c(.42)=.27, k(.27)=.17
EXPECT_FLOAT_EQ(0.5f, curve->GetValue(base::TimeDelta::FromSecondsD(0.5f)));
EXPECT_NEAR(0.83f, curve->GetValue(base::TimeDelta::FromSecondsD(0.58f)),
0.005f); // c(.58)=.73, k(.73)=.83
EXPECT_FLOAT_EQ(1.f, curve->GetValue(base::TimeDelta::FromSecondsD(
0.75f))); // Clamped. c(.75) > 1
EXPECT_FLOAT_EQ(1.f, curve->GetValue(base::TimeDelta::FromSecondsD(1.f)));
EXPECT_FLOAT_EQ(1.f, curve->GetValue(base::TimeDelta::FromSecondsD(2.f)));
}
// Tests that a linear timing function works as expected for inputs outside of
// range [0,1]
TEST(KeyframedAnimationCurveTest, LinearTimingInputsOutsideZeroOneRange) {
std::unique_ptr<KeyframedFloatAnimationCurve> curve(
KeyframedFloatAnimationCurve::Create());
curve->AddKeyframe(FloatKeyframe::Create(base::TimeDelta(), 0.f, nullptr));
curve->AddKeyframe(
FloatKeyframe::Create(base::TimeDelta::FromSecondsD(1.0), 2.f, nullptr));
// Curve timing function producing timing outputs outside of range [0,1].
curve->SetTimingFunction(
CubicBezierTimingFunction::Create(0.5f, -0.5f, 0.5f, 1.5f));
EXPECT_NEAR(-0.076f, curve->GetValue(base::TimeDelta::FromSecondsD(0.25f)),
0.001f);
EXPECT_NEAR(2.076f, curve->GetValue(base::TimeDelta::FromSecondsD(0.75f)),
0.001f);
}
// If a curve cubic-bezier timing function produces timing outputs outside
// the range [0, 1] then a keyframe cubic-bezier timing function
// should consume that input properly (using end-point gradients).
TEST(KeyframedAnimationCurveTest, CurveTimingInputsOutsideZeroOneRange) {
std::unique_ptr<KeyframedFloatAnimationCurve> curve(
KeyframedFloatAnimationCurve::Create());
// Keyframe timing function with 0.5 gradients at each end.
curve->AddKeyframe(FloatKeyframe::Create(
base::TimeDelta(), 0.f,
CubicBezierTimingFunction::Create(0.5f, 0.25f, 0.5f, 0.75f)));
curve->AddKeyframe(
FloatKeyframe::Create(base::TimeDelta::FromSecondsD(1.f), 1.f, nullptr));
// Curve timing function producing timing outputs outside of range [0,1].
curve->SetTimingFunction(
CubicBezierTimingFunction::Create(0.5f, -0.5f, 0.5f, 1.5f));
EXPECT_NEAR(-0.02f, curve->GetValue(base::TimeDelta::FromSecondsD(0.25f)),
0.002f); // c(.25)=-.04, -.04*0.5=-0.02
EXPECT_NEAR(0.33f, curve->GetValue(base::TimeDelta::FromSecondsD(0.46f)),
0.002f); // c(.46)=.38, k(.38)=.33
EXPECT_NEAR(0.67f, curve->GetValue(base::TimeDelta::FromSecondsD(0.54f)),
0.002f); // c(.54)=.62, k(.62)=.67
EXPECT_NEAR(1.02f, curve->GetValue(base::TimeDelta::FromSecondsD(0.75f)),
0.002f); // c(.75)=1.04 1+.04*0.5=1.02
}
// Tests that a step timing function works as expected for inputs outside of
// range [0,1]
TEST(KeyframedAnimationCurveTest, StepsTimingStartInputsOutsideZeroOneRange) {
std::unique_ptr<KeyframedFloatAnimationCurve> curve(
KeyframedFloatAnimationCurve::Create());
curve->AddKeyframe(
FloatKeyframe::Create(base::TimeDelta(), 0.f,
StepsTimingFunction::Create(
4, StepsTimingFunction::StepPosition::START)));
curve->AddKeyframe(
FloatKeyframe::Create(base::TimeDelta::FromSecondsD(1.0), 2.f, nullptr));
// Curve timing function producing timing outputs outside of range [0,1].
curve->SetTimingFunction(
CubicBezierTimingFunction::Create(0.5f, -0.5f, 0.5f, 1.5f));
EXPECT_FLOAT_EQ(0.f, curve->GetValue(base::TimeDelta::FromSecondsD(0.25f)));
EXPECT_FLOAT_EQ(2.5f, curve->GetValue(base::TimeDelta::FromSecondsD(0.75f)));
}
TEST(KeyframedAnimationCurveTest, StepsTimingEndInputsOutsideZeroOneRange) {
std::unique_ptr<KeyframedFloatAnimationCurve> curve(
KeyframedFloatAnimationCurve::Create());
curve->AddKeyframe(FloatKeyframe::Create(
base::TimeDelta(), 0.f,
StepsTimingFunction::Create(4, StepsTimingFunction::StepPosition::END)));
curve->AddKeyframe(
FloatKeyframe::Create(base::TimeDelta::FromSecondsD(1.0), 2.f, nullptr));
// Curve timing function producing timing outputs outside of range [0,1].
curve->SetTimingFunction(
CubicBezierTimingFunction::Create(0.5f, -0.5f, 0.5f, 1.5f));
EXPECT_FLOAT_EQ(-0.5f, curve->GetValue(base::TimeDelta::FromSecondsD(0.25f)));
EXPECT_FLOAT_EQ(2.f, curve->GetValue(base::TimeDelta::FromSecondsD(0.75f)));
}
// Tests that a frames timing function works as expected for inputs outside of
// range [0,1]
TEST(KeyframedAnimationCurveTest, FramesTimingInputsOutsideZeroOneRange) {
std::unique_ptr<KeyframedFloatAnimationCurve> curve(
KeyframedFloatAnimationCurve::Create());
curve->AddKeyframe(FloatKeyframe::Create(base::TimeDelta(), 0.f,
FramesTimingFunction::Create(5)));
curve->AddKeyframe(
FloatKeyframe::Create(base::TimeDelta::FromSecondsD(1.0), 2.f, nullptr));
// Curve timing function producing timing outputs outside of range [0,1].
curve->SetTimingFunction(
CubicBezierTimingFunction::Create(0.5f, -0.5f, 0.5f, 1.5f));
EXPECT_FLOAT_EQ(-0.5f, curve->GetValue(base::TimeDelta::FromSecondsD(0.25f)));
EXPECT_FLOAT_EQ(2.5f, curve->GetValue(base::TimeDelta::FromSecondsD(0.75f)));
}
// Tests that an animation with a curve timing function and multiple keyframes
// works as expected.
TEST(KeyframedAnimationCurveTest, CurveTimingMultipleKeyframes) {
std::unique_ptr<KeyframedFloatAnimationCurve> curve(
KeyframedFloatAnimationCurve::Create());
curve->AddKeyframe(FloatKeyframe::Create(base::TimeDelta(), 0.f, nullptr));
curve->AddKeyframe(
FloatKeyframe::Create(base::TimeDelta::FromSecondsD(1.f), 1.f, nullptr));
curve->AddKeyframe(
FloatKeyframe::Create(base::TimeDelta::FromSecondsD(2.f), 3.f, nullptr));
curve->AddKeyframe(
FloatKeyframe::Create(base::TimeDelta::FromSecondsD(3.f), 6.f, nullptr));
curve->AddKeyframe(
FloatKeyframe::Create(base::TimeDelta::FromSecondsD(4.f), 9.f, nullptr));
curve->SetTimingFunction(
CubicBezierTimingFunction::Create(0.5f, 0.f, 0.5f, 1.f));
EXPECT_FLOAT_EQ(0.f, curve->GetValue(base::TimeDelta::FromSecondsD(-1.f)));
EXPECT_FLOAT_EQ(0.f, curve->GetValue(base::TimeDelta::FromSecondsD(0.f)));
EXPECT_NEAR(0.42f, curve->GetValue(base::TimeDelta::FromSecondsD(1.f)),
0.005f);
EXPECT_NEAR(1.f, curve->GetValue(base::TimeDelta::FromSecondsD(1.455f)),
0.005f);
EXPECT_FLOAT_EQ(3.f, curve->GetValue(base::TimeDelta::FromSecondsD(2.f)));
EXPECT_NEAR(8.72f, curve->GetValue(base::TimeDelta::FromSecondsD(3.5f)),
0.01f);
EXPECT_FLOAT_EQ(9.f, curve->GetValue(base::TimeDelta::FromSecondsD(4.f)));
EXPECT_FLOAT_EQ(9.f, curve->GetValue(base::TimeDelta::FromSecondsD(5.f)));
}
// Tests that an animation with a curve timing function that overshoots works as
// expected.
TEST(KeyframedAnimationCurveTest, CurveTimingOvershootMultipeKeyframes) {
std::unique_ptr<KeyframedFloatAnimationCurve> curve(