CGAL 5.6 - Polygon Mesh Processing
Polygon_mesh_processing/remesh_almost_planar_patches.cpp
#include <CGAL/Exact_predicates_inexact_constructions_kernel.h>
#include <CGAL/Surface_mesh.h>
#include <CGAL/Polygon_mesh_processing/remesh_planar_patches.h>
#include <CGAL/Polygon_mesh_processing/region_growing.h>
#include <CGAL/Polygon_mesh_processing/IO/polygon_mesh_io.h>
#include <CGAL/Polygon_mesh_processing/random_perturbation.h>
#include <boost/property_map/vector_property_map.hpp>
#include <iostream>
#include <fstream>
typedef Kernel::Point_3 Point_3;
int main()
{
Surface_mesh sm;
//apply a perturbation to input vertices so that points are no longer coplanar
// declare vectors to store mesh properties
std::vector<std::size_t> region_ids(num_faces(sm));
std::vector<std::size_t> corner_id_map(num_vertices(sm), -1); // corner status of vertices
std::vector<bool> ecm(num_edges(sm), false); // mark edges at the boundary of regions
boost::vector_property_map<CGAL::Epick::Vector_3> normal_map; // normal of the supporting planes of the regions detected
// detect planar regions in the mesh
std::size_t nb_regions =
CGAL::parameters::cosine_of_maximum_angle(0.98).
region_primitive_map(normal_map).
maximum_distance(0.011));
// detect corner vertices on the boundary of planar regions
std::size_t nb_corners =
nb_regions,
CGAL::parameters::cosine_of_maximum_angle(0.98).
maximum_distance(0.011).
edge_is_constrained_map(CGAL::make_random_access_property_map(ecm)));
// run the remeshing algorithm using filled properties
Surface_mesh out;
out,
nb_regions, nb_corners,
CGAL::parameters::patch_normal_map(normal_map));
CGAL::IO::write_polygon_mesh("fandisk_remeshed.off", out);
return 0;
}