allow incremental refitting of the quantized aabb tree

src/BulletCollision/CollisionShapes/btStridingMeshInterface.h

@@ -49,6 +49,8 @@ class  btStridingMeshInterface
 
 		void	InternalProcessAllTriangles(btInternalTriangleIndexCallback* callback,const btVector3& aabbMin,const btVector3& aabbMax) const;
 
+		///brute force method to calculate aabb
+		void	calculateAabbBruteForce(btVector3& aabbMin,btVector3& aabbMax);
 
 		/// get read and write access to a subpart of a triangle mesh
 		/// this subpart has a continuous array of vertices and indices