CGAL users discussion list

[Andreas Fabri <>]

On 28/10/2011 22:00, Winnie Hellmann wrote:
> Hi again,
>
> I just stumbled over inserting a point which lies on the edge of a
> constrained Delaunay triangulation. I tried to use insert_in_edge(point,
> face, edge), but checking is_valid() of the triangulation afterwards
> fails an assertion in the following lines:
>
> result = result && !is_flipable(fit,i, false);
> CGAL_triangulation_assertion( result );
>
> (inside Constrained_Delaunay_triangulation_2.h)
>
> Interestingly the following call with same point, same face and same
> edge index (and lt = EDGE) works:
> insert(point, lt, face, edge);
>
> I will now use the latter one, but just out of curiosity: What is the
> difference between those two calls? I am running CGAL 3.9.
>
> Winnie Hellmann

The easy answer is that you should only use functions that
are documented (or we should not make the undocumented functions
public).  The latter one probably calls the first one, but
does some other operations before or after.

regards,

andreas