CGAL users discussion list

["Laurent Rineau (GeometryFactory)" <>]

Le dimanche 04 octobre 2009 13:03:45, Sterpa a écrit :
> I have to split an Halfedge at a given point, is there a constructor to
>  create an halfedge?

I assume you are talking about polyhedra (you should really precise such sort 
of things: remember the size of the CGAL libraries!)...

I do not know polyhedra very well, but I think splitting an edge is an Euler 
operator.

If p is a polyhedron, and h a halfedge of it, I think the following does the 
job:

  Halfedge new_h = p.split_edge(h);
  new_h->vertex()->point() = Point_3(x, y, z);

I have not verified. Just take that as hints for testing and browsing in the 
manual.

-- 
Laurent Rineau, PhD
Release Manager of the CGAL Project
http://www.cgal.org/
R&D Engineer at GeometryFactory
http://www.geometryfactory.com/