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#pragma once
#include "darray.h"
#include "defines.h"
#include "maths_types.h"
KITC_DECL_TYPED_ARRAY(f32)
typedef enum interpolation { INTERPOLATION_LINEAR, INTERPOLATION_COUNT } interpolation;
typedef enum keyframe_kind {
KEYFRAME_ROTATION,
KEYFRAME_TRANSLATION,
KEYFRAME_SCALE,
KEYFRAME_WEIGHTS,
} keyframe_kind;
typedef union keyframe {
quat rotation;
vec3 translation;
vec3 scale;
float* weights;
} keyframe;
typedef struct keyframes {
keyframe_kind kind;
keyframe* values;
size_t count;
} keyframes;
typedef struct animation_spline {
f32* timestamps;
size_t n_timestamps;
keyframes values;
interpolation interpolation;
} animation_spline;
typedef struct animation_sampler {
int current_index;
f32 min;
f32 max;
animation_spline animation;
} animation_sampler;
/** @brief Sample an animation at a given time `t` */
keyframe animation_sample(animation_sampler* sampler, f32 t);
typedef struct animation_clip {
// A clip contains one or more animation curves
// for now I think we can just enumerate all of the properties (assuming *only* one per type is in
// a clip) NULL = this property is not animated in this clip
animation_sampler* rotation;
animation_sampler* translation;
animation_sampler* scale;
animation_sampler* weights;
} animation_clip;
void animation_play(animation_clip* clip);
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