CGAL 5.1.1 - Polygon Mesh Processing
Polygon_mesh_processing/corefinement_mesh_union_and_intersection.cpp
#include <CGAL/Exact_predicates_inexact_constructions_kernel.h>
#include <CGAL/Surface_mesh.h>
#include <CGAL/Polygon_mesh_processing/corefinement.h>
#include <fstream>
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;
}
Mesh out_union, out_intersection;
std::array<boost::optional<Mesh*>, 4> output;
output[PMP::Corefinement::UNION] = &out_union;
output[PMP::Corefinement::INTERSECTION] = &out_intersection;
// for the example, we explicit the named parameters, this is identical to
// PMP::corefine_and_compute_boolean_operations(mesh1, mesh2, output)
std::array<bool, 4> res =
mesh1, mesh2,
output,
params::all_default(), // mesh1 named parameters
params::all_default(), // mesh2 named parameters
std::make_tuple(
params::vertex_point_map(get(boost::vertex_point, out_union)), // named parameters for out_union
params::vertex_point_map(get(boost::vertex_point, out_intersection)), // named parameters for out_intersection
params::all_default(), // named parameters for mesh1-mesh2 not used
params::all_default() )// named parameters for mesh2-mesh1 not used)
);
if (res[PMP::Corefinement::UNION])
{
std::cout << "Union was successfully computed\n";
std::ofstream output("union.off");
output.precision(17);
output << out_union;
}
else
std::cout << "Union could not be computed\n";
if (res[PMP::Corefinement::INTERSECTION])
{
std::cout << "Intersection was successfully computed\n";
std::ofstream output("intersection.off");
output.precision(17);
output << out_intersection;
}
else
std::cout << "Intersection could not be computed\n";
return 0;
}