| // 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. |
| |
| #ifndef CC_ANIMATION_CURVE_H_ |
| #define CC_ANIMATION_CURVE_H_ |
| |
| #include <public/WebTransformationMatrix.h> |
| |
| #include "base/memory/scoped_ptr.h" |
| #include "cc/cc_export.h" |
| |
| namespace cc { |
| |
| class FloatAnimationCurve; |
| class TransformAnimationCurve; |
| class TransformOperations; |
| |
| // An animation curve is a function that returns a value given a time. |
| // There are currently only two types of curve, float and transform. |
| class CC_EXPORT AnimationCurve { |
| public: |
| enum Type { Float, Transform }; |
| |
| virtual ~AnimationCurve() { } |
| |
| virtual double duration() const = 0; |
| virtual Type type() const = 0; |
| virtual scoped_ptr<AnimationCurve> clone() const = 0; |
| |
| const FloatAnimationCurve* toFloatAnimationCurve() const; |
| const TransformAnimationCurve* toTransformAnimationCurve() const; |
| }; |
| |
| class CC_EXPORT FloatAnimationCurve : public AnimationCurve { |
| public: |
| virtual ~FloatAnimationCurve() { } |
| |
| virtual float getValue(double t) const = 0; |
| |
| // Partial Animation implementation. |
| virtual Type type() const OVERRIDE; |
| }; |
| |
| class CC_EXPORT TransformAnimationCurve : public AnimationCurve { |
| public: |
| virtual ~TransformAnimationCurve() { } |
| |
| virtual WebKit::WebTransformationMatrix getValue(double t) const = 0; |
| |
| // Partial Animation implementation. |
| virtual Type type() const OVERRIDE; |
| }; |
| |
| } // namespace cc |
| |
| #endif // CC_ANIMATION_CURVE_H_ |