Combinatorial_map/map_3_simple_example.cpp

#include <CGAL/Combinatorial_map.h>
#include <iostream>
#include <cstdlib>

typedef CGAL::Combinatorial_map<3> CMap_3;
typedef CMap_3::Dart_const_descriptor Dart_const_descriptor;

int main()
{
  CMap_3 cm;

  // Create two tetrahedra.
  Dart_const_descriptor d1 = cm.make_combinatorial_tetrahedron();
  Dart_const_descriptor d2 = cm.make_combinatorial_tetrahedron();

  // Display the combinatorial map characteristics.
  cm.display_characteristics(std::cout);
  std::cout<<", valid="<<cm.is_valid()<<std::endl;

  unsigned int res = 0;
  // Iterate over all the darts of the first tetrahedron.
  // Note that CMap_3::Dart_of_orbit_range<1,2> in 3D is equivalent to
  // CMap_3::Dart_of_cell_range<3>.
  for (CMap_3::Dart_of_orbit_range<1,2>::const_iterator
       it(cm.darts_of_orbit<1,2>(d1).begin()),
       itend(cm.darts_of_orbit<1,2>(d1).end()); it!=itend; ++it)
    ++res;

  std::cout<<"Number of darts of the first tetrahedron: "<<res<<std::endl;

  res = 0;
  // Iterate over all the darts of the facet containing d2.
  for (CMap_3::Dart_of_orbit_range<1>::const_iterator
       it(cm.darts_of_orbit<1>(d2).begin()),
       itend(cm.darts_of_orbit<1>(d2).end()); it!=itend; ++it)
    ++res;

  std::cout<<"Number of darts of the facet containing d2: "<<res<<std::endl;

  return EXIT_SUCCESS;
}