1 files changed, 8 insertions, 7 deletions

diff --git a/gfx/src/scene/animation_impl.h b/gfx/src/scene/animation_impl.h
index 7265858..4408158 100644
--- a/gfx/src/scene/animation_impl.h
+++ b/gfx/src/scene/animation_impl.h
@@ -24,18 +24,19 @@ typedef struct Buffer Buffer;
 /// Joints are mutable and store the transform and joint matrices that result
 /// from animation, aside from the inverse bind matrix.
 typedef struct Joint {
-  rel_idx child;           /// First child Joint; index into Anima's joints.
-  rel_idx next;            /// Next sibling Joint; index into Anima's joints.
-  mat4    transform;       /// Local transform relative to parent.
-  mat4    inv_bind_matrix; /// Transforms the mesh into the joint's local space.
-  mat4    joint_matrix;    /// inv(global) * global joint transform * inv(bind).
+  joint_idx child;       /// First child Joint; index into Anima's joints.
+  joint_idx next;        /// Next sibling Joint; index into Anima's joints.
+  mat4      transform;   /// Local transform relative to parent.
+  mat4  inv_bind_matrix; /// Transforms the mesh into the joint's local space.
+  mat4  joint_matrix;    /// inv(global) * global joint transform * inv(bind).
+  aabb3 box;             /// Bounding box of vertices affected by joint.
 } Joint;
 
 /// Animation skeleton.
 typedef struct Skeleton {
   skeleton_idx next;
   size_t       num_joints;
-  rel_idx joints[GFX_MAX_NUM_JOINTS]; /// Indices into Anima's joints array.
+  joint_idx joints[GFX_MAX_NUM_JOINTS]; /// Indices into Anima's joints array.
 } Skeleton;
 
 /// A keyframe of animation.
@@ -49,7 +50,7 @@ typedef struct Keyframe {
 
 /// Animation channel.
 typedef struct Channel {
-  rel_idx                target; /// Index into Anima's joints array.
+  joint_idx              target; /// Index into Anima's joints array.
   ChannelType            type;
   AnimationInterpolation interpolation;
   size_t                 num_keyframes;