CGAL 5.1.3 - Triangulated Surface Mesh Approximation
#include <iostream>
#include <fstream>
#include <CGAL/Exact_predicates_inexact_constructions_kernel.h>
#include <CGAL/Surface_mesh.h>
#include <CGAL/Surface_mesh_approximation/approximate_triangle_mesh.h>
typedef boost::graph_traits<Mesh>::face_descriptor face_descriptor;
typedef Mesh::Property_map<face_descriptor, std::size_t> Face_proxy_pmap;
int main()
// reads input mesh
Mesh mesh;
std::ifstream file("data/");
file >> mesh;
// face proxy index property map
Face_proxy_pmap fpxmap =
mesh.add_property_map<face_descriptor, std::size_t>("f:proxy_id", 0).first;
// free function interface with named parameters
CGAL::parameters::max_number_of_proxies(200). // first stop criterion
min_error_drop(0.05). // second stop criterion
number_of_iterations(30). // number of relaxation iterations after seeding
face_proxy_map(fpxmap)); // output face-proxy map
// iterates over faces and outputs segment id to console
for(face_descriptor f : faces(mesh))
std::cout << fpxmap[f] << std::endl;