CGAL users discussion list

["Rubén Martínez" <>]

My problem reside in de transformation from Nef 3 to Polyedron, this code:

N1.convert_to_Polyhedron(P);


My complete code is this:

main(){

Polyhedron P;
  char *path;
  path = "polyhedron.off";

  P = readOFF (path);

  if(P.is_closed()) {
    Nef_polyhedron N1(P);

    if(N1.is_simple()) {
          N1.convert_to_Polyhedron(P);
      std::cout << P;
          std::cout << "Número de Vértices: ";
          std::cout <<  P.size_of_vertices ();
    }
    else
      std::cerr << "N1 is not a 2-manifold." << std::endl;
  }
}

And when I convert N1 (Nef 3) to P (Polyedron) i observe that the
vertex are duplicated, for example:

In this tetrahedron, i f I load this in the Nef 3, i have this:

OFF
8 6 0
# vertices
 -1 -1  1
 -1  1  1
  1  1  1
  1 -1  1
 -1 -1 -1
 -1  1 -1
  1  1 -1
  1 -1 -1
# facets
  4  3 2 1 0
  4  0 1 5 4
  4  6 5 1 2
  4  3 7 6 2
  4  4 7 3 0
  4  4 5 6 7


but if I execute the code N1.convert_to_Polyhedron(P); i obtain this result
OFF
16 12 0

 -1 -1  1
 -1  1  1
  1  1  1
  1 -1  1
 -1 -1 -1
 -1  1 -1
  1  1 -1
  1 -1 -1
 -1 -1  1
 -1  1  1
  1  1  1
  1 -1  1
 -1 -1 -1
 -1  1 -1
  1  1 -1
  1 -1 -1

  4  3 2 1 0
  4  0 1 5 4
  4  6 5 1 2
  4  3 7 6 2
  4  4 7 3 0
  4  4 5 6 7
  4  12 15  11 8
  4  12  8  9 13
  4  8  11  10  9
  4  12  13  14  15
  4  15  14  10  11
  4  13  9  10  14

Anyone know any solution for this problem?????

Thanks

RMG