CGAL users discussion list

[Rasmus Bach Nielsen <>]

Is there a way to move the point in a C3t3-friendly way, or is there a 
way to reestablish the C3t3 on top of the modified triangulation?

Regards
  Rasmus

On 05-01-2011 16:58, Laurent Rineau (GeometryFactory) wrote:
> On Wednesday 05 January 2011 16:42:24 Sebastien Loriot (GeometryFactory)
> wrote:
> > Note that the move function exits but is not documented for
> > Regular_triangulation_3 (the triangulation type of C3t3), and thus it
> > may disappear. The precondition to use this function is that no vertices
> > get hidden at any time, meaning in particular no two points must become
> > identical.
> What is more, the current implementation of the move_point of
> Regular_triangulation_3 is just an erase followed by an insert of the new
> point. That corrupts all cells attributes of the modified zone. And the C3t3
> object uses cell attributes to store its data structure. It means that a
> move_point corrupts the C3t3 in a neighborhood of the moved point.