CGAL users discussion list

["Laurent Rineau (GeometryFactory)" <>]

Le vendredi 25 septembre 2009 19:40:12, 

 a écrit :
> Hi,
> I would like to have a reference to a vertex described by a vertex iterator
> some thing like this:
> 
> for ( Vertex_iterator v_ = tmp.vertices_begin();
>                   v_ != tmp.vertices_end(); ++v_){
>       Vertex &vert=v_ ;
>       // more code
> 
> }
> with
> typedef CGAL::Simple_cartesian<double> Kernel;
> typedef CGAL::Polyhedron_3<Kernel>     Polyhedron;
> typedef Polyhedron::Vertex  Vertex;

If v_ is a Vertex_iterator, then *v_ is a Vertex. So the answer to your 
question is:

  Vertex &vert = *v_;

Why do you want to use a reference to a Vertex? I have been using CGAL for 
ten 
years, and I do not remember that I had once needed a reference to a Vertex. 
Usually, one use handles instead (or iterators, directly).

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