| // 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 "base/logging.h" |
| #include "cc/animation/timing_function.h" |
| |
| namespace cc { |
| |
| TimingFunction::TimingFunction() {} |
| |
| TimingFunction::~TimingFunction() {} |
| |
| double TimingFunction::Duration() const { |
| return 1.0; |
| } |
| |
| scoped_ptr<CubicBezierTimingFunction> CubicBezierTimingFunction::Create( |
| double x1, double y1, double x2, double y2) { |
| return make_scoped_ptr(new CubicBezierTimingFunction(x1, y1, x2, y2)); |
| } |
| |
| CubicBezierTimingFunction::CubicBezierTimingFunction(double x1, |
| double y1, |
| double x2, |
| double y2) |
| : bezier_(x1, y1, x2, y2) {} |
| |
| CubicBezierTimingFunction::~CubicBezierTimingFunction() {} |
| |
| float CubicBezierTimingFunction::GetValue(double x) const { |
| return static_cast<float>(bezier_.Solve(x)); |
| } |
| |
| scoped_ptr<AnimationCurve> CubicBezierTimingFunction::Clone() const { |
| return make_scoped_ptr( |
| new CubicBezierTimingFunction(*this)).PassAs<AnimationCurve>(); |
| } |
| |
| void CubicBezierTimingFunction::Range(float* min, float* max) const { |
| double min_d = 0; |
| double max_d = 1; |
| bezier_.Range(&min_d, &max_d); |
| *min = static_cast<float>(min_d); |
| *max = static_cast<float>(max_d); |
| } |
| |
| // These numbers come from |
| // http://www.w3.org/TR/css3-transitions/#transition-timing-function_tag. |
| scoped_ptr<TimingFunction> EaseTimingFunction::Create() { |
| return CubicBezierTimingFunction::Create( |
| 0.25, 0.1, 0.25, 1.0).PassAs<TimingFunction>(); |
| } |
| |
| scoped_ptr<TimingFunction> EaseInTimingFunction::Create() { |
| return CubicBezierTimingFunction::Create( |
| 0.42, 0.0, 1.0, 1.0).PassAs<TimingFunction>(); |
| } |
| |
| scoped_ptr<TimingFunction> EaseOutTimingFunction::Create() { |
| return CubicBezierTimingFunction::Create( |
| 0.0, 0.0, 0.58, 1.0).PassAs<TimingFunction>(); |
| } |
| |
| scoped_ptr<TimingFunction> EaseInOutTimingFunction::Create() { |
| return CubicBezierTimingFunction::Create( |
| 0.42, 0.0, 0.58, 1).PassAs<TimingFunction>(); |
| } |
| |
| } // namespace cc |