CGAL users discussion list

["Laurent Rineau (GeometryFactory)" <>]

Le jeudi 19 novembre 2009 20:32:34, Gilles a écrit :
> Hello,
> 
> I inheritate from Polyhedron_3 this way :
> 
> typedef CGAL::Simple_cartesian<double>           Kernel;
> typedef CGAL::Polyhedron_3<Kernel>       Polyhedron_3;
> typedef Polyhedron_3::HalfedgeDS         HalfedgeDS;
> typedef HalfedgeDS::Vertex   Vertex;
> typedef Vertex::Point Point_3;
> 
> 
> class AC_Nef_Polyhedron : public Polyhedron_3,public AC_Forme3D
> {...}
> 
> 
>  ...and I try to get the facet iterator in a member fonction :
> 
>  void AC_Nef_Polyhedron::draw() const
>  {
>      // it does not work on 'this' ("conversion to non-scalar type
>  requested") Facet_iterator monIterator=facets_begin();
>
> 
>      // IT WORKS
>      AC_Nef_Polyhedron np (NULL,NULL);
>      Facet_iterator t=np.facets_begin();
> 
>      // IT ALSO WORKS
>      AC_Nef_Polyhedron* hj=new AC_Nef_Polyhedron(NULL,NULL);
>      Facet_iterator o=hj->facets_begin();
>  }
> 
> Any clue ?

The only difference I see is that "this", in "void draw() const", is a 
*const* 
pointer. Is facets_begin() a *const* method?

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