docs: public void     getWorldPosition(int boneindex, Vector3f pos) 
      {
          Bone bone = mBones[boneindex];
          int boneParent = mSkeleton.getParentBoneIndex(boneindex);
  
          if ((boneParent >= 0) && ((bone.Changed & LOCAL_ROT) == LOCAL_ROT))
          {
              calcWorld(bone, boneParent);
          }
          pos.x = bone.WorldMatrix.m30();
          pos.y = bone.WorldMatrix.m31();
          pos.z = bone.WorldMatrix.m32();
      }