+ void OverlayQuadChildren(QuadTreeIndex orig_parent, QuadTreeIndex parent, QuadTreeNodeChildren type);
+ void OverlayQuadParent(QuadTreeIndex orig_child, QuadTreeIndex child, QuadTreeNodeChildren type);
+ void PropagateQuadChanges(QuadTreeIndex node);
+ // Returns the number of objects the current object formed when clipped, the objects in question are added to the end of the document.
+ int ClipObjectToQuadChild(int object_id, QuadTreeNodeChildren type);
+
+ void SetQuadtreeInsertNode(QuadTreeIndex node) { m_current_insert_node = node; }