AnimTestbed/src/ozzutils.cc

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//
// Created by martin on 10.12.21.
//
#include "ozzutils.h"
#include <ozz/base/maths/simd_math.h>
#define OZZ_INCLUDE_PRIVATE_HEADER
#include "../src/animation/runtime/animation_keyframe.h"
#undef OZZ_INCLUDE_PRIVATE_HEADER
void calc_bone_translation(
float ratio,
int i_bone_idx,
const ozz::animation::Animation* i_animation,
ozz::math::Transform& o_transform) {
int key_idx = 1;
const ozz::span<const ozz::animation::Float3Key>& translations =
i_animation->translations();
int key_idx_prev = 0;
int key_idx_next = 0;
while (key_idx < translations.size()) {
key_idx_next = key_idx;
if (translations[key_idx].track == i_bone_idx) {
if (translations[key_idx].ratio < ratio) {
key_idx_prev = key_idx;
} else {
break;
}
}
key_idx++;
}
const ozz::animation::Float3Key& key_prev = translations[key_idx_prev];
const ozz::animation::Float3Key& key_next = translations[key_idx_next];
float r = 0.f;
if (key_prev.ratio != key_next.ratio) {
r = (ratio - key_prev.ratio) / (key_next.ratio - key_prev.ratio);
}
o_transform.translation.x =
ozz::math::HalfToFloat(key_prev.value[0])
+ r
* (ozz::math::HalfToFloat(key_next.value[0])
- ozz::math::HalfToFloat(key_prev.value[0]));
o_transform.translation.y =
ozz::math::HalfToFloat(key_prev.value[1])
+ r
* (ozz::math::HalfToFloat(key_next.value[1])
- ozz::math::HalfToFloat(key_prev.value[1]));
o_transform.translation.z =
ozz::math::HalfToFloat(key_prev.value[2])
+ r
* (ozz::math::HalfToFloat(key_next.value[2])
- ozz::math::HalfToFloat(key_prev.value[2]));
}