Initial works for sampling root node transforms.

tests/AnimSampleNodeTests.cc

@@ -6,6 +6,7 @@
 #define OZZ_INCLUDE_PRIVATE_HEADER
 #include "../src/animation/runtime/animation_keyframe.h"
 #include "catch.hpp"
+#include "ozzutils.h"
 
 void get_bone_transform(
     int i_bone_idx,
@@ -41,52 +42,6 @@ void sample_bone_transform(
   get_bone_transform(i_bone_idx, io_local_matrices, o_transform);
 }
 
-void calc_bone_translation(
-    float ratio,
-    int i_bone_idx,
-    const ozz::animation::Animation* i_animation,
-    ozz::math::Transform& o_transform) {
-  int key_idx = 0;
-  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]));
-}
 
 TEST_CASE("Sample single bone channel", "[AnimSamplerNode]") {
   SkinnedMesh skinned_mesh;
@@ -167,5 +122,5 @@ TEST_CASE("Root Bone Sampling", "[AnimSamplerNode]") {
   test_node.UpdateTime(0.2f);
 
   ozz::math::Transform root_transform;
-  //  test_node.Evaluate(&skinned_mesh.m_local_matrices, &root_transform);
+  test_node.Evaluate(&skinned_mesh.m_local_matrices, &root_transform);
 }