#include <CGAL/Exact_predicates_inexact_constructions_kernel.h>
#include <CGAL/Polyhedron_3.h>
#include <CGAL/Polygon_mesh_processing/compute_normal.h>
#include <CGAL/Polygon_mesh_processing/IO/polygon_mesh_io.h>
#include <boost/property_map/property_map.hpp>
#include <iostream>
#include <fstream>
#include <map>
typedef K::Point_3 Point;
typedef K::Vector_3 Vector;
typedef boost::graph_traits<Polyhedron>::vertex_descriptor vertex_descriptor;
typedef boost::graph_traits<Polyhedron>::face_descriptor face_descriptor;
int main(int argc, char* argv[])
{
Polyhedron mesh;
{
std::cerr << "Invalid input." << std::endl;
return 1;
}
std::map<face_descriptor,Vector> fnormals;
std::map<vertex_descriptor,Vector> vnormals;
boost::make_assoc_property_map(fnormals));
std::cout << "Face normals :" << std::endl;
for(face_descriptor fd: faces(mesh))
std::cout << fnormals[fd] << std::endl;
std::cout << "Vertex normals :" << std::endl;
for(vertex_descriptor vd: vertices(mesh))
std::cout << vnormals[vd] << std::endl;
return 0;
}