1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
|
// 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
|
