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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 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 #ifndef UI_GFX_INTERPOLATED_TRANSFORM_H_ | 5 #ifndef UI_GFX_INTERPOLATED_TRANSFORM_H_ |
| 6 #define UI_GFX_INTERPOLATED_TRANSFORM_H_ | 6 #define UI_GFX_INTERPOLATED_TRANSFORM_H_ |
| 7 | 7 |
| 8 #include "base/basictypes.h" | 8 #include "base/basictypes.h" |
| 9 #include "base/memory/scoped_ptr.h" | 9 #include "base/memory/scoped_ptr.h" |
| 10 #include "ui/gfx/point.h" | 10 #include "ui/gfx/point.h" |
| 11 #include "ui/gfx/point3_f.h" | 11 #include "ui/gfx/point3_f.h" |
| 12 #include "ui/gfx/transform.h" | 12 #include "ui/gfx/transform.h" |
| 13 #include "ui/gfx/transform_util.h" | |
| 14 #include "ui/gfx/vector3d_f.h" | |
| 13 | 15 |
| 14 namespace ui { | 16 namespace ui { |
| 15 | 17 |
| 16 /////////////////////////////////////////////////////////////////////////////// | 18 /////////////////////////////////////////////////////////////////////////////// |
| 17 // class InterpolatedTransform | 19 // class InterpolatedTransform |
| 18 // | 20 // |
| 19 // Abstract base class for transforms that animate over time. These | 21 // Abstract base class for transforms that animate over time. These |
| 20 // interpolated transforms can be combined to allow for more sophisticated | 22 // interpolated transforms can be combined to allow for more sophisticated |
| 21 // animations. For example, you might combine a rotation of 90 degrees between | 23 // animations. For example, you might combine a rotation of 90 degrees between |
| 22 // times 0 and 1, with a scale from 1 to 0.3 between times 0 and 0.25 and a | 24 // times 0 and 1, with a scale from 1 to 0.3 between times 0 and 0.25 and a |
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| 39 // and our child's transform at time t (if we have one). | 41 // and our child's transform at time t (if we have one). |
| 40 // | 42 // |
| 41 // This function takes ownership of the passed InterpolatedTransform. | 43 // This function takes ownership of the passed InterpolatedTransform. |
| 42 void SetChild(InterpolatedTransform* child); | 44 void SetChild(InterpolatedTransform* child); |
| 43 | 45 |
| 44 // If the interpolated transform is reversed, Interpolate(t) will return | 46 // If the interpolated transform is reversed, Interpolate(t) will return |
| 45 // Interpolate(1 - t) | 47 // Interpolate(1 - t) |
| 46 void SetReversed(bool reversed) { reversed_ = reversed; } | 48 void SetReversed(bool reversed) { reversed_ = reversed; } |
| 47 bool Reversed() const { return reversed_; } | 49 bool Reversed() const { return reversed_; } |
| 48 | 50 |
| 49 // NOTE: this function is soon to be deprecated. | |
| 50 static bool FactorTRS(const gfx::Transform& transform, | |
| 51 gfx::Point* translation, | |
| 52 float* rotation, | |
| 53 gfx::Point3F* scale); | |
| 54 | |
| 55 protected: | 51 protected: |
| 56 // Calculates the interpolated transform without considering our child. | 52 // Calculates the interpolated transform without considering our child. |
| 57 virtual gfx::Transform InterpolateButDoNotCompose(float t) const = 0; | 53 virtual gfx::Transform InterpolateButDoNotCompose(float t) const = 0; |
| 58 | 54 |
| 59 // If time in (start_time_, end_time_], this function linearly interpolates | 55 // If time in (start_time_, end_time_], this function linearly interpolates |
| 60 // between start_value and end_value. More precisely it returns | 56 // between start_value and end_value. More precisely it returns |
| 61 // (1 - t) * start_value + t * end_value where | 57 // (1 - t) * start_value + t * end_value where |
| 62 // t = (start_time_ - time) / (end_time_ - start_time_). | 58 // t = (start_time_ - time) / (end_time_ - start_time_). |
| 63 // If time < start_time_ it returns start_value, and if time >= end_time_ | 59 // If time < start_time_ it returns start_value, and if time >= end_time_ |
| 64 // it returns end_value. | 60 // it returns end_value. |
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| 108 }; | 104 }; |
| 109 | 105 |
| 110 /////////////////////////////////////////////////////////////////////////////// | 106 /////////////////////////////////////////////////////////////////////////////// |
| 111 // class InterpolatedAxisAngleRotation | 107 // class InterpolatedAxisAngleRotation |
| 112 // | 108 // |
| 113 // Represents an animated rotation. | 109 // Represents an animated rotation. |
| 114 // | 110 // |
| 115 /////////////////////////////////////////////////////////////////////////////// | 111 /////////////////////////////////////////////////////////////////////////////// |
| 116 class UI_EXPORT InterpolatedAxisAngleRotation : public InterpolatedTransform { | 112 class UI_EXPORT InterpolatedAxisAngleRotation : public InterpolatedTransform { |
| 117 public: | 113 public: |
| 118 InterpolatedAxisAngleRotation(gfx::Point3F axis, | 114 InterpolatedAxisAngleRotation(gfx::Vector3dF axis, |
|
danakj
2012/11/16 19:46:12
const& to match ui/gfx style.
| |
| 119 float start_degrees, | 115 float start_degrees, |
| 120 float end_degrees); | 116 float end_degrees); |
| 121 InterpolatedAxisAngleRotation(gfx::Point3F axis, | 117 InterpolatedAxisAngleRotation(gfx::Vector3dF axis, |
|
danakj
2012/11/16 19:46:12
const&
| |
| 122 float start_degrees, | 118 float start_degrees, |
| 123 float end_degrees, | 119 float end_degrees, |
| 124 float start_time, | 120 float start_time, |
| 125 float end_time); | 121 float end_time); |
| 126 virtual ~InterpolatedAxisAngleRotation(); | 122 virtual ~InterpolatedAxisAngleRotation(); |
| 127 | 123 |
| 128 protected: | 124 protected: |
| 129 virtual gfx::Transform InterpolateButDoNotCompose(float t) const OVERRIDE; | 125 virtual gfx::Transform InterpolateButDoNotCompose(float t) const OVERRIDE; |
| 130 | 126 |
| 131 private: | 127 private: |
| 132 gfx::Point3F axis_; | 128 gfx::Vector3dF axis_; |
| 133 const float start_degrees_; | 129 const float start_degrees_; |
| 134 const float end_degrees_; | 130 const float end_degrees_; |
| 135 | 131 |
| 136 DISALLOW_COPY_AND_ASSIGN(InterpolatedAxisAngleRotation); | 132 DISALLOW_COPY_AND_ASSIGN(InterpolatedAxisAngleRotation); |
| 137 }; | 133 }; |
| 138 | 134 |
| 139 /////////////////////////////////////////////////////////////////////////////// | 135 /////////////////////////////////////////////////////////////////////////////// |
| 140 // class InterpolatedScale | 136 // class InterpolatedScale |
| 141 // | 137 // |
| 142 // Represents an animated scale. | 138 // Represents an animated scale. |
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| 233 virtual gfx::Transform InterpolateButDoNotCompose(float t) const OVERRIDE; | 229 virtual gfx::Transform InterpolateButDoNotCompose(float t) const OVERRIDE; |
| 234 | 230 |
| 235 private: | 231 private: |
| 236 void Init(const gfx::Point& pivot, InterpolatedTransform* transform); | 232 void Init(const gfx::Point& pivot, InterpolatedTransform* transform); |
| 237 | 233 |
| 238 scoped_ptr<InterpolatedTransform> transform_; | 234 scoped_ptr<InterpolatedTransform> transform_; |
| 239 | 235 |
| 240 DISALLOW_COPY_AND_ASSIGN(InterpolatedTransformAboutPivot); | 236 DISALLOW_COPY_AND_ASSIGN(InterpolatedTransformAboutPivot); |
| 241 }; | 237 }; |
| 242 | 238 |
| 243 class UI_EXPORT InterpolatedTRSTransform : public InterpolatedTransform { | 239 class UI_EXPORT InterpolatedMatrixTransform : public InterpolatedTransform { |
| 244 public: | 240 public: |
| 245 InterpolatedTRSTransform(const gfx::Transform& start_transform, | 241 InterpolatedMatrixTransform(const gfx::Transform& start_transform, |
| 246 const gfx::Transform& end_transform); | 242 const gfx::Transform& end_transform); |
| 247 | 243 |
| 248 InterpolatedTRSTransform(const gfx::Transform& start_transform, | 244 InterpolatedMatrixTransform(const gfx::Transform& start_transform, |
| 249 const gfx::Transform& end_transform, | 245 const gfx::Transform& end_transform, |
| 250 float start_time, | 246 float start_time, |
| 251 float end_time); | 247 float end_time); |
| 252 | 248 |
| 253 virtual ~InterpolatedTRSTransform(); | 249 virtual ~InterpolatedMatrixTransform(); |
| 254 | 250 |
| 255 protected: | 251 protected: |
| 256 virtual gfx::Transform InterpolateButDoNotCompose(float t) const OVERRIDE; | 252 virtual gfx::Transform InterpolateButDoNotCompose(float t) const OVERRIDE; |
| 257 | 253 |
| 258 private: | 254 private: |
| 259 void Init(const gfx::Transform& start_transform, | 255 void Init(const gfx::Transform& start_transform, |
| 260 const gfx::Transform& end_transform); | 256 const gfx::Transform& end_transform); |
| 261 | 257 |
| 262 scoped_ptr<InterpolatedTransform> transform_; | 258 gfx::DecomposedTransform start_decomp_; |
| 259 gfx::DecomposedTransform end_decomp_; | |
| 263 }; | 260 }; |
| 264 | 261 |
| 265 } // namespace ui | 262 } // namespace ui |
| 266 | 263 |
| 267 #endif // UI_GFX_INTERPOLATED_TRANSFORM_H_ | 264 #endif // UI_GFX_INTERPOLATED_TRANSFORM_H_ |
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