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#include <CGAL/Exact_predicates_exact_constructions_kernel.h>
#include <CGAL/Surface_mesh.h>
#include <CGAL/Polyhedron_3.h>
#include <CGAL/Polyhedron_items_with_id_3.h>
#include <CGAL/Nef_polyhedron_3.h>
#include <CGAL/IO/Nef_polyhedron_iostream_3.h>
#include <CGAL/OFF_to_nef_3.h>
#include <sstream>
#include <fstream>
#include <iostream>
typedef CGAL::Exact_predicates_exact_constructions_kernel K;
typedef CGAL::Surface_mesh<K::Point_3> Polygon_mesh;
typedef CGAL::Polyhedron_3<K> Polyhedron;
typedef CGAL::Polyhedron_3<K, CGAL::Polyhedron_items_with_id_3> Polyhedron_with_indices;
typedef CGAL::Nef_polyhedron_3<K> Nef_polyhedron;
template <class PolygonMesh>
void fill_cube(PolygonMesh& pm)
{
std::string input =
"OFF\n\
8 12 0\n\
-1 -1 -1\n\
-1 1 -1\n\
1 1 -1\n\
1 -1 -1\n\
-1 -1 1\n\
-1 1 1\n\
1 1 1\n\
1 -1 1\n\
3 0 1 3\n\
3 3 1 2\n\
3 0 4 1\n\
3 1 4 5\n\
3 3 2 7\n\
3 7 2 6\n\
3 4 0 3\n\
3 7 4 3\n\
3 6 4 7\n\
3 6 5 4\n\
3 1 5 6\n\
3 2 1 6";
std::stringstream ss;
ss << input;
ss >> pm;
}
int main()
{
// construction from a Surface_mesh
Polygon_mesh input;
fill_cube(input);
Nef_polyhedron nef(input);
Polygon_mesh output;
std::ofstream out;
// construction from a Polyhedron_3
Polyhedron input_bis;
fill_cube(input_bis);
Nef_polyhedron nef_bis(input_bis);
// construction from a Polyhedron_3 with indices
Polyhedron_with_indices input_ter;
fill_cube(input_ter);
set_halfedgeds_items_id(input_ter);
Nef_polyhedron nef_ter( input_ter,
get(CGAL::halfedge_index,input_ter),
get(CGAL::face_index, input_ter) );
assert(nef==nef_bis);
assert(nef==nef_ter);
}
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