text: /*******************************************************************************
   * Copyright (c) 2013, Esoteric Software
   * All rights reserved.
   * 
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions are met:
   * 
   * 1. Redistributions of source code must retain the above copyright notice, this
   *    list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright notice,
   *    this list of conditions and the following disclaimer in the documentation
   *    and/or other materials provided with the distribution.
   * 
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
   * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
   * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
   * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
   * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
   * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
   * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
   * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   ******************************************************************************/
  
  #ifndef SPINE_ANIMATION_H_
  #define SPINE_ANIMATION_H_
  
  namespace cocos2d { namespace extension {
  
  typedef struct Timeline Timeline;
  struct Skeleton;
  
  typedef struct {
  	const char* const name;
  	float duration;
  
  	int timelineCount;
  	Timeline** timelines;
  } Animation;
  
  Animation* Animation_create (const char* name, int timelineCount);
  void Animation_dispose (Animation* self);
  
  void Animation_apply (const Animation* self, struct Skeleton* skeleton, float time, int/*bool*/loop);
  void Animation_mix (const Animation* self, struct Skeleton* skeleton, float time, int/*bool*/loop, float alpha);
  
  /**/
  
  struct Timeline {
  	const void* const vtable;
  };
  
  void Timeline_dispose (Timeline* self);
  void Timeline_apply (const Timeline* self, struct Skeleton* skeleton, float time, float alpha);
  
  /**/
  
  typedef struct {
  	Timeline super;
  	float* curves; /* dfx, dfy, ddfx, ddfy, dddfx, dddfy, ... */
  } CurveTimeline;
  
  void CurveTimeline_setLinear (CurveTimeline* self, int frameIndex);
  void CurveTimeline_setStepped (CurveTimeline* self, int frameIndex);
  
  /* Sets the control handle positions for an interpolation bezier curve used to transition from this keyframe to the next.
   * cx1 and cx2 are from 0 to 1, representing the percent of time between the two keyframes. cy1 and cy2 are the percent of
   * the difference between the keyframe's values. */
  void CurveTimeline_setCurve (CurveTimeline* self, int frameIndex, float cx1, float cy1, float cx2, float cy2);
  float CurveTimeline_getCurvePercent (const CurveTimeline* self, int frameIndex, float percent);
  
  /**/
  
  typedef struct BaseTimeline {
  	CurveTimeline super;
  	int const framesLength;
  	float* const frames; /* time, angle, ... for rotate. time, x, y, ... for translate and scale. */
  	int boneIndex;
  } RotateTimeline;
  
  RotateTimeline* RotateTimeline_create (int frameCount);
  
  void RotateTimeline_setFrame (RotateTimeline* self, int frameIndex, float time, float angle);
  
  /**/
  
  typedef struct BaseTimeline TranslateTimeline;
  
  TranslateTimeline* TranslateTimeline_create (int frameCount);
  
  void TranslateTimeline_setFrame (TranslateTimeline* self, int frameIndex, float time, float x, float y);
  
  /**/
  
  typedef struct BaseTimeline ScaleTimeline;
  
  ScaleTimeline* ScaleTimeline_create (int frameCount);
  
  void ScaleTimeline_setFrame (ScaleTimeline* self, int frameIndex, float time, float x, float y);
  
  /**/
  
  typedef struct {
  	CurveTimeline super;
  	int const framesLength;
  	float* const frames; /* time, r, g, b, a, ... */
  	int slotIndex;
  } ColorTimeline;
  
  ColorTimeline* ColorTimeline_create (int frameCount);
  
  void ColorTimeline_setFrame (ColorTimeline* self, int frameIndex, float time, float r, float g, float b, float a);
  
  /**/
  
  typedef struct {
  	Timeline super;
  	int const framesLength;
  	float* const frames; /* time, ... */
  	int slotIndex;
  	const char** const attachmentNames;
  } AttachmentTimeline;
  
  AttachmentTimeline* AttachmentTimeline_create (int frameCount);
  
  /* @param attachmentName May be 0. */
  void AttachmentTimeline_setFrame (AttachmentTimeline* self, int frameIndex, float time, const char* attachmentName);
  
  }} // namespace cocos2d { namespace extension {
  
  #endif /* SPINE_ANIMATION_H_ */
  