issue 8773

binary.cpp

#include <CGAL/Exact_predicates_inexact_constructions_kernel.h>

#include <CGAL/Mesh_triangulation_3.h>
#include <CGAL/Mesh_complex_3_in_triangulation_3.h>
#include <CGAL/Mesh_criteria_3.h>
#include <CGAL/Surface_mesh.h>
#include <CGAL/boost/graph/helpers.h>
#include <CGAL/Polyhedral_mesh_domain_3.h>
#include <CGAL/make_mesh_3.h>
#include <CGAL/IO/output_to_vtu.h>
#include <CGAL/IO/File_binary_mesh_3.h>

// Domain
typedef CGAL::Exact_predicates_inexact_constructions_kernel K;
typedef CGAL::Surface_mesh<K::Point_3> Polyhedron;
typedef CGAL::Polyhedral_mesh_domain_3<Polyhedron, K> Mesh_domain;

typedef CGAL::Sequential_tag Concurrency_tag;

// Triangulation
typedef CGAL::Mesh_triangulation_3<Mesh_domain,CGAL::Default,Concurrency_tag>::type Tr;

typedef CGAL::Mesh_complex_3_in_triangulation_3<Tr> C3t3;

// Criteria
typedef CGAL::Mesh_criteria_3<Tr> Mesh_criteria;

namespace params = CGAL::parameters;

int main(int argc, char*argv[])
{
  const std::string fname = (argc>1)?argv[1]:CGAL::data_file_path("meshes/sphere.off");
  // Create input polyhedron
  Polyhedron polyhedron;
  std::ifstream input(fname);
  input >> polyhedron;

  // Create domain
  Mesh_domain domain(polyhedron);

  // Mesh criteria (no cell_size set)
  Mesh_criteria criteria(params::facet_angle(25).facet_size(0.15).facet_distance(0.1).
                                 cell_radius_edge_ratio(3));

  // Mesh generation
  C3t3 c3t3 = CGAL::make_mesh_3<C3t3>(domain, criteria, params::no_perturb().no_exude());

  // Output
  {
    std::ofstream out("ascii.vtu");
    CGAL::IO::output_to_vtu(out, c3t3, CGAL::IO::ASCII);
  }

  {
    std::ofstream out("binary.vtu", std::ios::binary);
    CGAL::IO::output_to_vtu(out, c3t3, CGAL::IO::BINARY);
  }


  {
    std::ofstream out("mesh.binary", std::ios::binary);
    CGAL::IO::save_binary_file(out, c3t3);
    out.close();
    C3t3 bis;
    std::ifstream in("mesh.binary", std::ios::binary);
    bool b = CGAL::IO::load_binary_file(in, bis);

    std::ofstream outbis("bis.vtu");
    CGAL::IO::output_to_vtu(outbis, bis, CGAL::IO::ASCII);
  }

  return EXIT_SUCCESS;
}