stopping for now

studio-bvh/src/joint.rs

@@ -488,10 +488,12 @@ impl<'a> Iterator for Joints<'a> {
                     return None;
                 }
 
-                Some(Joint {
+                let next = Some(Joint {
                     index: *current,
                     joints: self.joints,
-                })
+                });
+                *current += 1;
+                next
             }
             JointIterType::Sequence(ref mut joints) => {
                 let Some(next) = joints.pop_front() else {

studio-bvh/src/lib.rs

@@ -525,6 +525,10 @@ impl Bvh {
     pub fn joints_mut(&mut self) -> JointsMut<'_> {
         JointsMut::iter_root(&mut self.joints[..])
     }
+    
+    pub fn joints_len(&self) -> usize {
+        self.joints.len()
+    }
 
     /// Returns a `Frames` iterator over the frames of the bvh.
     ///