CurrentModule = DelaunayTriangulation
add_boundary_information!
add_ghost_triangles!
add_point!
add_segment!
add_triangle!
clear_empty_features!
delete_ghost_triangles!
delete_holes!
get_surrounding_polygon
delete_point!
delete_triangle!
flip_edge!
legalise_edge!
lock_convex_hull!
unlock_convex_hull!
split_edge!
complete_split_edge_and_legalise!
split_triangle!
complete_split_triangle_and_legalise!