Rect TransformToQuadChild(const Rect& src, QuadTreeNodeChildren child_type);
Rect TransformFromQuadChild(const Rect& src, QuadTreeNodeChildren child_type);
Rect TransformToQuadChild(const Rect& src, QuadTreeNodeChildren child_type);
Rect TransformFromQuadChild(const Rect& src, QuadTreeNodeChildren child_type);