CGAL users discussion list

[Zohar <>]

I think I pinpointed the problem, and it something to do with the
conversion.

I still can't run the demo on my computer

http://www.cgal.org/demo/3.9/polyhedron_3.zip

, but I installed a clean xp on a VM, copied the demo with all the necessary
QT dlls, and I ran it from there (??).

There was no problem in doing the above union in the demo, so I tried to
track the problem in my app. It seems that the result from my union is
damaged, and can't be read by the demo. Where can I find the code for the
demo? I assume it is an old version of mesh_3 demo, but cmake doesn't give
me the nef_3 sources, since I'm missing qt3.

But maybe you could find my mistake:

typedef CGAL::Simple_cartesian<CGAL::Gmpq>  Kernel3;
typedef CGAL::Nef_polyhedron_3<Kernel3> Nef_polyhedron;
typedef CGAL::Polyhedron_3<Kernel3> Polyhedron2;

void test()
{
        Polyhedron2 poly1, poly2;
        ifstream f1("c:/8/s.off");
        f1 >> poly1;
        ifstream f2("c:/8/s1.off");
        f2 >> poly2;

        Nef_polyhedron N1(poly1);
        Nef_polyhedron N2(poly2);

        N1 += N2;

        Polyhedron2 polyu;
        N1.convert_to_polyhedron(polyu);

        ofstream of("c:/8/union.off");
        of << polyu << endl;
}


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