diff options
Diffstat (limited to 'src/animation.c')
| -rw-r--r-- | src/animation.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/src/animation.c b/src/animation.c index e69de29..f6741e8 100644 --- a/src/animation.c +++ b/src/animation.c @@ -0,0 +1,38 @@ +#include "animation.h" +#include "maths.h" +#include "log.h" + +keyframe animation_sample(animation_sampler *sampler, f32 t) { + size_t previous_index = 0; + f32 previous_time = 0.0; + // look forwards + DEBUG("%d\n", sampler->animation.values.kind); + TRACE("Here %d", sampler->animation.n_timestamps); + for (u32 i = 1; i < sampler->animation.n_timestamps; i++) { + f32 current_time = sampler->animation.timestamps[i]; + if (current_time > t) { + break; + } + previous_time = current_time; + previous_index = i; + + } + + size_t next_index = (previous_index + 1) % sampler->animation.n_timestamps; + f32 next_time = sampler->animation.timestamps[next_index]; + printf("%d %f %d %f\n", previous_index, previous_time, next_index, next_time); + + keyframe prev_value = sampler->animation.values.values[previous_index]; + keyframe next_value = sampler->animation.values.values[next_index]; + + printf("%d %d\n", previous_index, next_index); + + f32 time_diff = sampler->animation.timestamps[next_index] - sampler->animation.timestamps[previous_index + ]; + f32 percent = (t - sampler->animation.timestamps[next_index]) / time_diff; + + quat interpolated_rot = quat_slerp(sampler->animation.values.values[previous_index].rotation, + sampler->animation.values.values[next_index].rotation, percent); + + return (keyframe){ .rotation = interpolated_rot }; +}
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