CGAL users discussion list

[Stephane Tayeb <>]

Hi,


 wrote:
> I came up with this piece of code which compiles fine, but I get an exception
> when I try to do a "facet->second". Could anybody please give a hint on how to
> fix it?
>
>     std::list<CGAL::Object> facets;
>     as.filtration(std::back_inserter(facets));
>
>     std::list<CGAL::Object>::iterator fit;
>     for(fit = facets.begin(); fit != facets.end(); fit++)
>     {
>         const CGAL::Facet* facet = CGAL::object_cast<Facet>(&(*fit));
>
>   
Using your pointer without checking if the cast is a success (facet != 
NULL) is not a good idea I think.
I don't know if it can help.

>         for(int i = 0; i < 4; i++)
>         {
>             if(i != facet->second) // **** Exception here
>             {
>                 std::cout  << " " <<
> Point_map[facet->first->vertex(i)->point()];
>             }
>         }
>         std::cout << std::endl;
>     }
>   

Regards,

--
Stephane Tayeb
Software engineer - INRIA Sophia Antipolis
Geometrica Project-Team