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#include <CGAL/Exact_predicates_inexact_constructions_kernel.h>
#include <CGAL/Surface_mesh.h>
#include <CGAL/Polyhedron_3.h>
#include <CGAL/boost/graph/copy_face_graph.h>
#include <CGAL/boost/graph/Euler_operations.h>
#include <CGAL/Polygon_mesh_processing/measure.h>
#include <CGAL/Named_function_parameters.h>
#include <CGAL/boost/graph/named_params_helper.h>
#include <CGAL/Polygon_mesh_processing/IO/polygon_mesh_io.h>
#include <iostream>
#include <iterator>
#include <string>
typedef CGAL::Exact_predicates_inexact_constructions_kernel K;
typedef K::Point_3 Point;
typedef CGAL::Surface_mesh<Point> Surface_mesh;
typedef CGAL::Polyhedron_3<K> Polyhedron;
typedef boost::graph_traits<Surface_mesh>::face_descriptor face_descriptor_1;
typedef boost::graph_traits<Polyhedron>::face_descriptor face_descriptor_2;
namespace PMP = CGAL::Polygon_mesh_processing;
int main(int argc, char* argv[])
{
const std::string filename1 = (argc > 1) ? argv[1] : CGAL::data_file_path("meshes/P.off");
Surface_mesh mesh1;
Polyhedron mesh2;
if(!PMP::IO::read_polygon_mesh(filename1, mesh1))
{
std::cerr << "Invalid input." << std::endl;
return 1;
}
CGAL::copy_face_graph(mesh1, mesh2);
CGAL::Euler::add_center_vertex(*halfedges(mesh2).begin(),mesh2);
std::vector<std::pair<face_descriptor_1, face_descriptor_2> > common;
std::vector<face_descriptor_1> m1_only;
std::vector<face_descriptor_2> m2_only;
PMP::match_faces(mesh1, mesh2, std::back_inserter(common), std::back_inserter(m1_only), std::back_inserter(m2_only));
std::cout <<"Faces only in m1 :"<< std::endl;
for(const face_descriptor_1& f : m1_only)
std::cout << " " << f;
std::cout <<"\n\nFaces only in m2:" << std::endl;
for(const face_descriptor_2& f : m2_only)
std::cout << " " << &(*f);
std::cout << "\n\nFaces in both:" << std::endl;
for(const auto& f_pair : common)
std::cout << " (" << f_pair.first << ", " << &(*f_pair.second);
std::cout << std::endl;
return 0;
}
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