Method begin_surface

code/model/map_builder.cpp:90–98

Map* MapBuilder::map() { return target() ; } */

}
*/
void MapBuilder::begin_surface() {
	transition(initial, surface) ;
	star_.bind(target()) ;
	is_locked_.bind(target()) ;
	nb_non_manifold_v_ = 0 ;
	nb_duplicate_e_    = 0 ;
	nb_isolated_v_     = 0 ;
	all_facet_keys = new std::set<FacetKey> ;
}

void MapBuilder::end_surface() {
	delete all_facet_keys ;