- d -

• describe() : vtol_block , vtol_edge , vtol_face , vtol_two_chain , vtol_vertex , vtol_face_2d , vtol_vertex_2d , vtol_zero_chain , vtol_edge_2d , vtol_one_chain , vtol_topology_object
• describe_directions() : vtol_one_chain , vtol_two_chain
• describe_inferiors() : vtol_topology_object
• describe_superiors() : vtol_topology_object
• determine_edge_directions() : vtol_one_chain
• Diameter() : vtol_intensity_face
• difference_edges() : vtol_cycle_processor
• dir() : vtol_chain
• direction() : vtol_two_chain , vtol_one_chain
• directions() : vtol_chain
• distance_from() : vtol_vertex_2d