CGAL users discussion list

["Fernando Cacciola" <>]

sinan mutlu wrote:
> Dear Andread Fabri,
>
> I have tried the code below:
>
>   Surface surface;
>    float maxface=0.1;
>
>    std::ifstream is("cow.off") ;   //std::ifstream is("skull.off") ;
>    is >> surface ;
You need to assert that the file has been in fact open, as Laurent already 
pointed out.

But you also need to assert that the format is valid for the requirement of the 
Polyhedron_3 class:

 assert(surface.is_valid())

And, if you want to simplify that triangulated mesh, assert that if satisfies 
the requirements of the simplification algorithm:

 assert( surface.is_pure_triangle())

HTH

Fernando Cacciola
GeometryFactory