CGAL 5.1 - Polygon Mesh Processing
Polygon_mesh_processing/corefinement_consecutive_bool_op.cpp
#include <CGAL/Exact_predicates_inexact_constructions_kernel.h>
#include <CGAL/Exact_predicates_exact_constructions_kernel.h>
#include <CGAL/Surface_mesh.h>
#include <CGAL/Polygon_mesh_processing/corefinement.h>
#include <fstream>
typedef boost::graph_traits<Mesh>::vertex_descriptor vertex_descriptor;
typedef Mesh::Property_map<vertex_descriptor,EK::Point_3> Exact_point_map;
typedef Mesh::Property_map<vertex_descriptor,bool> Exact_point_computed;
namespace params = PMP::parameters;
struct Exact_vertex_point_map
{
// typedef for the property map
typedef boost::property_traits<Exact_point_map>::value_type value_type;
typedef boost::property_traits<Exact_point_map>::reference reference;
typedef boost::property_traits<Exact_point_map>::category category;
typedef boost::property_traits<Exact_point_map>::key_type key_type;
// exterior references
Exact_point_map exact_point_map;
Mesh* tm_ptr;
// Converters
Exact_vertex_point_map()
: tm_ptr(nullptr)
{}
Exact_vertex_point_map(const Exact_point_map& ep, Mesh& tm)
: exact_point_map(ep)
, tm_ptr(&tm)
{
for (Mesh::Vertex_index v : vertices(tm))
exact_point_map[v]=to_exact(tm.point(v));
}
friend
reference get(const Exact_vertex_point_map& map, key_type k)
{
CGAL_precondition(map.tm_ptr!=nullptr);
return map.exact_point_map[k];
}
friend
void put(const Exact_vertex_point_map& map, key_type k, const EK::Point_3& p)
{
CGAL_precondition(map.tm_ptr!=nullptr);
map.exact_point_map[k]=p;
// create the input point from the exact one
map.tm_ptr->point(k)=map.to_input(p);
}
};
int main(int argc, char* argv[])
{
const char* filename1 = (argc > 1) ? argv[1] : "data/blobby.off";
const char* filename2 = (argc > 2) ? argv[2] : "data/eight.off";
std::ifstream input(filename1);
Mesh mesh1, mesh2;
if (!input || !(input >> mesh1))
{
std::cerr << "First mesh is not a valid off file." << std::endl;
return 1;
}
input.close();
input.open(filename2);
if (!input || !(input >> mesh2))
{
std::cerr << "Second mesh is not a valid off file." << std::endl;
return 1;
}
Exact_point_map mesh1_exact_points =
mesh1.add_property_map<vertex_descriptor,EK::Point_3>("e:exact_point").first;
Exact_point_map mesh2_exact_points =
mesh2.add_property_map<vertex_descriptor,EK::Point_3>("e:exact_point").first;
Exact_vertex_point_map mesh1_vpm(mesh1_exact_points, mesh1);
Exact_vertex_point_map mesh2_vpm(mesh2_exact_points, mesh2);
mesh2,
mesh1,
params::vertex_point_map(mesh1_vpm),
params::vertex_point_map(mesh2_vpm),
params::vertex_point_map(mesh1_vpm) ) )
{
mesh2,
mesh2,
params::vertex_point_map(mesh1_vpm),
params::vertex_point_map(mesh2_vpm),
params::vertex_point_map(mesh2_vpm) ) )
{
std::cout << "Intersection and union were successfully computed\n";
std::ofstream output("inter_union.off");
output.precision(17);
output << mesh2;
return 0;
}
std::cout << "Union could not be computed\n";
return 1;
}
std::cout << "Intersection could not be computed\n";
return 1;
}