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1 // Copyright 2012 The Chromium Authors. All rights reserved. | 1 // Copyright 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "cc/timing_function.h" | 5 #include "cc/timing_function.h" |
6 | 6 |
7 #include "third_party/skia/include/core/SkMath.h" | 7 #include "third_party/skia/include/core/SkMath.h" |
8 | 8 |
9 // TODO(danakj) These methods come from SkInterpolator.cpp. When such a method | 9 // TODO(danakj) These methods come from SkInterpolator.cpp. When such a method |
10 // is available in the public Skia API, we should switch to using that. | 10 // is available in the public Skia API, we should switch to using that. |
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77 } // namespace | 77 } // namespace |
78 | 78 |
79 namespace cc { | 79 namespace cc { |
80 | 80 |
81 TimingFunction::TimingFunction() { | 81 TimingFunction::TimingFunction() { |
82 } | 82 } |
83 | 83 |
84 TimingFunction::~TimingFunction() { | 84 TimingFunction::~TimingFunction() { |
85 } | 85 } |
86 | 86 |
87 double TimingFunction::duration() const { | 87 double TimingFunction::Duration() const { |
88 return 1.0; | 88 return 1.0; |
89 } | 89 } |
90 | 90 |
91 scoped_ptr<CubicBezierTimingFunction> CubicBezierTimingFunction::create( | 91 scoped_ptr<CubicBezierTimingFunction> CubicBezierTimingFunction::create( |
92 double x1, double y1, double x2, double y2) { | 92 double x1, double y1, double x2, double y2) { |
93 return make_scoped_ptr(new CubicBezierTimingFunction(x1, y1, x2, y2)); | 93 return make_scoped_ptr(new CubicBezierTimingFunction(x1, y1, x2, y2)); |
94 } | 94 } |
95 | 95 |
96 CubicBezierTimingFunction::CubicBezierTimingFunction(double x1, double y1, | 96 CubicBezierTimingFunction::CubicBezierTimingFunction(double x1, double y1, |
97 double x2, double y2) | 97 double x2, double y2) |
98 : x1_(SkDoubleToScalar(x1)), | 98 : x1_(SkDoubleToScalar(x1)), |
99 y1_(SkDoubleToScalar(y1)), | 99 y1_(SkDoubleToScalar(y1)), |
100 x2_(SkDoubleToScalar(x2)), | 100 x2_(SkDoubleToScalar(x2)), |
101 y2_(SkDoubleToScalar(y2)) { | 101 y2_(SkDoubleToScalar(y2)) { |
102 } | 102 } |
103 | 103 |
104 CubicBezierTimingFunction::~CubicBezierTimingFunction() { | 104 CubicBezierTimingFunction::~CubicBezierTimingFunction() { |
105 } | 105 } |
106 | 106 |
107 float CubicBezierTimingFunction::getValue(double x) const { | 107 float CubicBezierTimingFunction::GetValue(double x) const { |
108 SkScalar value = SkUnitCubicInterp(x1_, y1_, x2_, y2_, x); | 108 SkScalar value = SkUnitCubicInterp(x1_, y1_, x2_, y2_, x); |
109 return SkScalarToFloat(value); | 109 return SkScalarToFloat(value); |
110 } | 110 } |
111 | 111 |
112 scoped_ptr<AnimationCurve> CubicBezierTimingFunction::clone() const { | 112 scoped_ptr<AnimationCurve> CubicBezierTimingFunction::Clone() const { |
113 return make_scoped_ptr( | 113 return make_scoped_ptr( |
114 new CubicBezierTimingFunction(*this)).PassAs<AnimationCurve>(); | 114 new CubicBezierTimingFunction(*this)).PassAs<AnimationCurve>(); |
115 } | 115 } |
116 | 116 |
117 // These numbers come from http://www.w3.org/TR/css3-transitions/#transition-tim
ing-function_tag. | 117 // These numbers come from |
| 118 // http://www.w3.org/TR/css3-transitions/#transition-timing-function_tag. |
118 scoped_ptr<TimingFunction> EaseTimingFunction::create() { | 119 scoped_ptr<TimingFunction> EaseTimingFunction::create() { |
119 return CubicBezierTimingFunction::create( | 120 return CubicBezierTimingFunction::create( |
120 0.25, 0.1, 0.25, 1).PassAs<TimingFunction>(); | 121 0.25, 0.1, 0.25, 1).PassAs<TimingFunction>(); |
121 } | 122 } |
122 | 123 |
123 scoped_ptr<TimingFunction> EaseInTimingFunction::create() { | 124 scoped_ptr<TimingFunction> EaseInTimingFunction::create() { |
124 return CubicBezierTimingFunction::create( | 125 return CubicBezierTimingFunction::create( |
125 0.42, 0, 1.0, 1).PassAs<TimingFunction>(); | 126 0.42, 0, 1.0, 1).PassAs<TimingFunction>(); |
126 } | 127 } |
127 | 128 |
128 scoped_ptr<TimingFunction> EaseOutTimingFunction::create() { | 129 scoped_ptr<TimingFunction> EaseOutTimingFunction::create() { |
129 return CubicBezierTimingFunction::create( | 130 return CubicBezierTimingFunction::create( |
130 0, 0, 0.58, 1).PassAs<TimingFunction>(); | 131 0, 0, 0.58, 1).PassAs<TimingFunction>(); |
131 } | 132 } |
132 | 133 |
133 scoped_ptr<TimingFunction> EaseInOutTimingFunction::create() { | 134 scoped_ptr<TimingFunction> EaseInOutTimingFunction::create() { |
134 return CubicBezierTimingFunction::create( | 135 return CubicBezierTimingFunction::create( |
135 0.42, 0, 0.58, 1).PassAs<TimingFunction>(); | 136 0.42, 0, 0.58, 1).PassAs<TimingFunction>(); |
136 } | 137 } |
137 | 138 |
138 } // namespace cc | 139 } // namespace cc |
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