CGAL users discussion list

[Priyank Jain <>]

Hello,

I found a way to view to render a polyhedron in windows without using 
geomview/qt. Its not the best way to do it, but one can visually see 
them models.
I use the following code to write to a .off file (adapted from the 
example in the manual):

void WriteToFile(char* name, Polyhedron& P) {
   using namespace std;
   ofstream myFile;
   myFile.open(name);

   myFile << "OFF" << std::endl << P.size_of_vertices() << ' '
       << P.size_of_facets() << " 0" << std::endl;
   std::copy( P.points_begin(), P.points_end(),
       std::ostream_iterator<Point_3>( myFile, "\n"));
   for (  Facet_iterator i = P.facets_begin(); i != P.facets_end(); ++i) {
       Halfedge_facet_circulator j = i->facet_begin();
       // Facets in polyhedral surfaces are at least triangles.
       CGAL_assertion( CGAL::circulator_size(j) >= 3);
       myFile << CGAL::circulator_size(j) << ' ';
       do {
           myFile << ' ' << std::distance(P.vertices_begin(), j->vertex());
       } while ( ++j != i->facet_begin());
       myFile << std::endl;
   }


   myFile.close();
}

This would yield a .off file with whatever name one specifies. I then 
use a renderer (GLC Player) to load and render this .off model file.

Hope it helps someone if they come across the same problem.

/Priyank

Priyank Jain wrote:
> Hello,
>
> I want to render a polyhedron model and I am not sure how to go about 
> it. I am on a windows machine using Visual Studio 2008 as my choice of 
> compiler. I looked at geomView, but it seems to only support unix / 
> windows(+cygwin) flavor. The other option is Qt framework, but then in 
> the manual, it mentioned only about 2D stuff, so I am not sure if I 
> can use qt to render my polyhedron. On a side note, I have Qt 
> installed on my machine, so if required I can use that.
>
> Can someone please let me know how they have dealt with rendering 
> polyhedron models on a windows/visual studio configuration ?
>
> I'd really appreciate any help.
>
> Thank you
> /Priyank Jain