CGAL users discussion list

["Laurent Rineau (GeometryFactory)" <>]

Le mardi 15 novembre 2011 04:36:47 Hamid G a écrit :

> On Tue, Nov 15, 2011 at 3:56 AM, Sebastien Loriot (GeometryFactory)

>

> <> wrote:

> > Use for_each instead.

>

> Thanks,

>

> Just to clarify this in my head,

> itv=c3t3.triangulation().finite_vertices_begin() is an iterator which

> upon dereferencing returns a pointer to a vertex ? hence the double

> .point() in

> itv->point().point()+K::Vector_3(x0,y0,z0)

>

> I guess that double .point() is confusing me.

 

If itv=c3t3.triangulation().finite_vertices_begin(), then itv is an iterator over the finite vertices of the regular triangulation. In regular triangulations, the point type is a CGAL::Weighted_point<K::Point_3>.

 

See:

http://www.cgal.org/Manual/latest/doc_html/cgal_manual/Triangulation_2_ref/Class_Weighted_point.html

 

So itv->point() is a CGAL::Weighted_point<K::Point_3> and itv->point().point() is a K::Point_3, where K is the used kernel.

 

--

Laurent Rineau, PhD

R&D Engineer at GeometryFactory http://www.geometryfactory.com/

Release Manager of the CGAL Project http://www.cgal.org/