CGAL users discussion list

[Olivier Devillers <>]

The manual says:

Advanced Modifiers

The following modifiers are required for convenience of the advanced user.

They do not guarantee the combinatorial validity of the resulting triangulation data structure. 

Calling the function delete_face, you are cleaning the memory, but neighbouring faces still refer to the face you remove ==> bug

A triangulation cannot contain holes since it is a "data structure to store a two-dimensional triangulation that has the topology of a two-dimensional sphere."

(From the abstract of TDS2 manual)

So what you can do is to add a boolean in your faces to mark the faces as inside or outside.

Olivier