| // Copyright 2013 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/scroll_offset_animation_curve.h" |
| |
| #include "cc/animation/timing_function.h" |
| #include "cc/base/time_util.h" |
| #include "cc/test/geometry_test_utils.h" |
| #include "testing/gtest/include/gtest/gtest.h" |
| |
| namespace cc { |
| namespace { |
| |
| TEST(ScrollOffsetAnimationCurveTest, Duration) { |
| gfx::ScrollOffset target_value(100.f, 200.f); |
| scoped_ptr<ScrollOffsetAnimationCurve> curve( |
| ScrollOffsetAnimationCurve::Create(target_value, |
| EaseInOutTimingFunction::Create())); |
| |
| curve->SetInitialValue(target_value); |
| EXPECT_DOUBLE_EQ(0.0, curve->Duration().InSecondsF()); |
| |
| // x decreases, y stays the same. |
| curve->SetInitialValue(gfx::ScrollOffset(136.f, 200.f)); |
| EXPECT_DOUBLE_EQ(0.1, curve->Duration().InSecondsF()); |
| |
| // x increases, y stays the same. |
| curve->SetInitialValue(gfx::ScrollOffset(19.f, 200.f)); |
| EXPECT_DOUBLE_EQ(0.15, curve->Duration().InSecondsF()); |
| |
| // x stays the same, y decreases. |
| curve->SetInitialValue(gfx::ScrollOffset(100.f, 344.f)); |
| EXPECT_DOUBLE_EQ(0.2, curve->Duration().InSecondsF()); |
| |
| // x stays the same, y increases. |
| curve->SetInitialValue(gfx::ScrollOffset(100.f, 191.f)); |
| EXPECT_DOUBLE_EQ(0.05, curve->Duration().InSecondsF()); |
| |
| // x decreases, y decreases. |
| curve->SetInitialValue(gfx::ScrollOffset(32500.f, 500.f)); |
| EXPECT_DOUBLE_EQ(3.0, curve->Duration().InSecondsF()); |
| |
| // x decreases, y increases. |
| curve->SetInitialValue(gfx::ScrollOffset(150.f, 119.f)); |
| EXPECT_DOUBLE_EQ(0.15, curve->Duration().InSecondsF()); |
| |
| // x increases, y decreases. |
| curve->SetInitialValue(gfx::ScrollOffset(0.f, 14600.f)); |
| EXPECT_DOUBLE_EQ(2.0, curve->Duration().InSecondsF()); |
| |
| // x increases, y increases. |
| curve->SetInitialValue(gfx::ScrollOffset(95.f, 191.f)); |
| EXPECT_DOUBLE_EQ(0.05, curve->Duration().InSecondsF()); |
| } |
| |
| TEST(ScrollOffsetAnimationCurveTest, GetValue) { |
| gfx::ScrollOffset initial_value(2.f, 40.f); |
| gfx::ScrollOffset target_value(10.f, 20.f); |
| scoped_ptr<ScrollOffsetAnimationCurve> curve( |
| ScrollOffsetAnimationCurve::Create(target_value, |
| EaseInOutTimingFunction::Create())); |
| curve->SetInitialValue(initial_value); |
| |
| base::TimeDelta duration = curve->Duration(); |
| EXPECT_GT(curve->Duration().InSecondsF(), 0); |
| EXPECT_LT(curve->Duration().InSecondsF(), 0.1); |
| |
| EXPECT_EQ(AnimationCurve::SCROLL_OFFSET, curve->Type()); |
| EXPECT_EQ(duration, curve->Duration()); |
| |
| EXPECT_VECTOR2DF_EQ(initial_value, |
| curve->GetValue(base::TimeDelta::FromSecondsD(-1.0))); |
| EXPECT_VECTOR2DF_EQ(initial_value, curve->GetValue(base::TimeDelta())); |
| EXPECT_VECTOR2DF_NEAR(gfx::ScrollOffset(6.f, 30.f), |
| curve->GetValue(TimeUtil::Scale(duration, 0.5f)), |
| 0.00025); |
| EXPECT_VECTOR2DF_EQ(target_value, curve->GetValue(duration)); |
| EXPECT_VECTOR2DF_EQ( |
| target_value, |
| curve->GetValue(duration + base::TimeDelta::FromSecondsD(1.0))); |
| |
| // Verify that GetValue takes the timing function into account. |
| gfx::ScrollOffset value = curve->GetValue(TimeUtil::Scale(duration, 0.25f)); |
| EXPECT_NEAR(3.0333f, value.x(), 0.0002f); |
| EXPECT_NEAR(37.4168f, value.y(), 0.0002f); |
| } |
| |
| // Verify that a clone behaves exactly like the original. |
| TEST(ScrollOffsetAnimationCurveTest, Clone) { |
| gfx::ScrollOffset initial_value(2.f, 40.f); |
| gfx::ScrollOffset target_value(10.f, 20.f); |
| scoped_ptr<ScrollOffsetAnimationCurve> curve( |
| ScrollOffsetAnimationCurve::Create(target_value, |
| EaseInOutTimingFunction::Create())); |
| curve->SetInitialValue(initial_value); |
| base::TimeDelta duration = curve->Duration(); |
| |
| scoped_ptr<AnimationCurve> clone(curve->Clone()); |
| |
| EXPECT_EQ(AnimationCurve::SCROLL_OFFSET, clone->Type()); |
| EXPECT_EQ(duration, clone->Duration()); |
| |
| EXPECT_VECTOR2DF_EQ(initial_value, |
| clone->ToScrollOffsetAnimationCurve()->GetValue( |
| base::TimeDelta::FromSecondsD(-1.0))); |
| EXPECT_VECTOR2DF_EQ( |
| initial_value, |
| clone->ToScrollOffsetAnimationCurve()->GetValue(base::TimeDelta())); |
| EXPECT_VECTOR2DF_NEAR(gfx::ScrollOffset(6.f, 30.f), |
| clone->ToScrollOffsetAnimationCurve()->GetValue( |
| TimeUtil::Scale(duration, 0.5f)), |
| 0.00025); |
| EXPECT_VECTOR2DF_EQ( |
| target_value, clone->ToScrollOffsetAnimationCurve()->GetValue(duration)); |
| EXPECT_VECTOR2DF_EQ(target_value, |
| clone->ToScrollOffsetAnimationCurve()->GetValue( |
| duration + base::TimeDelta::FromSecondsD(1.f))); |
| |
| // Verify that the timing function was cloned correctly. |
| gfx::ScrollOffset value = clone->ToScrollOffsetAnimationCurve()->GetValue( |
| TimeUtil::Scale(duration, 0.25f)); |
| EXPECT_NEAR(3.0333f, value.x(), 0.0002f); |
| EXPECT_NEAR(37.4168f, value.y(), 0.0002f); |
| } |
| |
| TEST(ScrollOffsetAnimationCurveTest, UpdateTarget) { |
| gfx::ScrollOffset initial_value(0.f, 0.f); |
| gfx::ScrollOffset target_value(0.f, 3600.f); |
| scoped_ptr<ScrollOffsetAnimationCurve> curve( |
| ScrollOffsetAnimationCurve::Create( |
| target_value, EaseInOutTimingFunction::Create(), |
| ScrollOffsetAnimationCurve::DurationBehavior::CONSTANT)); |
| curve->SetInitialValue(initial_value); |
| EXPECT_EQ(0.2, curve->Duration().InSecondsF()); |
| EXPECT_EQ(1800.0, curve->GetValue(base::TimeDelta::FromSecondsD(0.1)).y()); |
| EXPECT_EQ(3600.0, curve->GetValue(base::TimeDelta::FromSecondsD(0.2)).y()); |
| |
| curve->UpdateTarget(0.1, gfx::ScrollOffset(0.0, 9900.0)); |
| |
| EXPECT_EQ(0.3, curve->Duration().InSecondsF()); |
| EXPECT_EQ(1800.0, curve->GetValue(base::TimeDelta::FromSecondsD(0.1)).y()); |
| EXPECT_NEAR(6827.59, curve->GetValue(base::TimeDelta::FromSecondsD(0.2)).y(), |
| 0.01); |
| EXPECT_EQ(9900.0, curve->GetValue(base::TimeDelta::FromSecondsD(0.3)).y()); |
| |
| curve->UpdateTarget(0.2, gfx::ScrollOffset(0.0, 7200.0)); |
| |
| // A closer target at high velocity reduces the duration. |
| EXPECT_NEAR(0.22, curve->Duration().InSecondsF(), 0.01); |
| EXPECT_NEAR(6827.59, curve->GetValue(base::TimeDelta::FromSecondsD(0.2)).y(), |
| 0.01); |
| EXPECT_EQ(7200.0, curve->GetValue(base::TimeDelta::FromSecondsD(0.22)).y()); |
| } |
| |
| } // namespace |
| } // namespace cc |