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#include <CGAL/Simple_cartesian.h>
#include <CGAL/Surface_mesh.h>
#include <iostream>
#include <fstream>
#include <boost/graph/connected_components.hpp>
typedef CGAL::Simple_cartesian<double> Kernel;
typedef Kernel::Point_3 Point;
typedef CGAL::Surface_mesh<Point> Mesh;
typedef boost::graph_traits<Mesh>::vertex_descriptor vertex_descriptor;
int main(int argc, char* argv[])
{
const std::string filename = (argc > 1) ? argv[1] : CGAL::data_file_path("meshes/prim.off");
Mesh sm;
if(!CGAL::IO::read_polygon_mesh(filename, sm))
{
std::cerr << "Invalid input." << std::endl;
return 1;
}
Mesh::Property_map<vertex_descriptor,int> ccmap;
ccmap = sm.add_property_map<vertex_descriptor,int>("v:CC").first;
int num = connected_components(sm, ccmap);
std::cout << num << " connected components" << std::endl;
for(vertex_descriptor v : vertices(sm)){
std::cout << v << " is in component " << ccmap[v] << std::endl;
}
return 0;
}
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