CGAL users discussion list

["Sebastien Loriot (GeometryFactory)" <>]

Here is a simple example where you half-spheres are inside two off files:

#include <CGAL/Exact_predicates_exact_constructions_kernel.h>
#include <CGAL/Polyhedron_3.h>
#include <CGAL/IO/Polyhedron_iostream.h>
#include <CGAL/Nef_polyhedron_3.h>
#include <CGAL/IO/Nef_polyhedron_iostream_3.h>
#include <CGAL/OFF_to_nef_3.h>
#include <iostream>
#include <fstream>

typedef CGAL::Exact_predicates_exact_constructions_kernel  Kernel;
typedef CGAL::Polyhedron_3<Kernel>  Polyhedron;
typedef CGAL::Nef_polyhedron_3<Kernel> Nef_polyhedron;

int main(int, char *argv[]) {

  std::ifstream off1(argv[1]);
  std::ifstream off2(argv[2]);

  Nef_polyhedron n1,n2;
//read nef polyhedra from off files
  CGAL::OFF_to_nef_3(off1,n1);
  CGAL::OFF_to_nef_3(off2,n2);

//do the union
  n1 += n2;

//convert the nef polyhedron as a polyhedron
  Polyhedron p;
  n1.convert_to_polyhedron(p);

  std::ifstream output(argv[3]);
  output << p;
}



On 05/15/2013 05:09 PM, ChaoM wrote:
> Hello all:
>         I get two half spere intersected~ and I want to mesh or triangulation
> the whole object, I try to use the constraited Delaunay Triangulation,  but
> I don't know how to set the constraited edges? Some CGAL users suggest me to
> use the Nef polygon and use the bool opreation to get the whole result.
>        if some one can help me   i am very appreciate!
>
>
>
>
> --
> View this message in context: 
> http://cgal-discuss.949826.n4.nabble.com/Nef-polygon-tp4657453.html
> Sent from the cgal-discuss mailing list archive at Nabble.com.