Definition

This concept is for proxy objects which get notified when a kinetic Delaunay triangulation changes.

Operations
void	pre_remove_vertex (Vertex_handle)
	The vertex is about to be deleted.

void	post_remove_vertex (Point_key, Cell_handle)
	The vertex was just removed.

void	pre_insert_vertex (Point_key, Cell_handle)
	The vertex is about to be inserted into the cell (although the `Cell_handle` might be `NULL`).

void	post_insert_vertex (Vertex_handle)
	The vertex was just inserted.

void	change_vertex (Vertex_handle)
	The trajectory of the point at the vertex changed.

void	create_cell (Cell_handle)
	The cell was just created and initialized.

void	destroy_cell (Cell_handle)
	The cell is about to be removed.

void	pre_edge_flip (Edge)
	The edge is about to be flipped.

void	post_edge_flip (Facet)
	The facet was just created with a flip.

void	pre_facet_flip (Facet)
	The facet is about to be flipped.

void	post_facet_flip (Edge)
	The edge was just created with a flip.

Operations