t3danim.h

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#ifndef TINY3D_T3DANIM_H
#define TINY3D_T3DANIM_H
 
#include "t3dmodel.h"
#include "t3dskeleton.h"
 
#ifdef __cplusplus
extern "C"
{
#endif
 
#define T3D_ANIM_TARGET_TRANSLATION 0
#define T3D_ANIM_TARGET_SCALE_XYZ   1
#define T3D_ANIM_TARGET_SCALE_S     2
#define T3D_ANIM_TARGET_ROTATION    3
 
typedef struct {
  float timeStart;
  float timeEnd;
  int32_t* changedFlag; // flag to increment when target is changed
} T3DAnimTargetBase;
 
typedef struct {
  T3DAnimTargetBase base;
  T3DQuat* targetQuat; // target to modify
  T3DQuat kfCurr; // current keyframe value
  T3DQuat kfNext; // next keyframe value
} T3DAnimTargetQuat;
 
typedef struct {
  T3DAnimTargetBase base;
  float* targetScalar;
  float kfCurr;
  float kfNext;
} T3DAnimTargetScalar;
 
typedef struct {
  T3DChunkAnim *animRef;
  T3DAnimTargetQuat *targetsQuat;
  T3DAnimTargetScalar *targetsScalar;
 
  float speed;
  float time;
 
  FILE *file;
  int nextKfSize;
  uint8_t isPlaying;
  uint8_t isLooping;
} T3DAnim;
 
T3DAnim t3d_anim_create(const T3DModel *model, const char* name);
 
void t3d_anim_attach(T3DAnim* anim, const T3DSkeleton* skeleton);
 
void t3d_anim_attach_pos(T3DAnim* anim, uint32_t targetIdx, T3DVec3* target, int32_t *updateFlag);
 
void t3d_anim_attach_rot(T3DAnim* anim, uint32_t targetIdx, T3DQuat* target, int32_t *updateFlag);
 
void t3d_anim_attach_scale(T3DAnim* anim, uint32_t targetIdx, T3DVec3* target, int32_t *updateFlag);
 
void t3d_anim_update(T3DAnim* anim, float deltaTime);
 
void t3d_anim_set_time(T3DAnim* anim, float time);
 
static float t3d_anim_get_time(const T3DAnim* anim) {
  return anim->time;
}
 
static float t3d_anim_get_length(const T3DAnim* anim) {
  return anim->animRef->duration;
}
 
inline static void t3d_anim_set_speed(T3DAnim* anim, float speed) {
  anim->speed = speed < 0.0f ? 0.0f : speed;
}
 
inline static void t3d_anim_set_playing(T3DAnim* anim, bool isPlaying) {
  anim->isPlaying = isPlaying;
}
 
inline static void t3d_anim_set_looping(T3DAnim* anim, bool loop) {
  anim->isLooping = loop;
}
 
void t3d_anim_destroy(T3DAnim *anim);
 
#ifdef __cplusplus
}
#endif
 
#endif // TINY3D_T3DANIM_H