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#include <CGAL/Simple_cartesian.h>
#include <CGAL/Surface_mesh.h>
#include <CGAL/draw_surface_mesh.h>
#include <fstream>
typedef CGAL::Simple_cartesian<double> Kernel;
typedef Kernel::Point_3 Point;
typedef CGAL::Surface_mesh<Point> Mesh;
int main(int argc, char* argv[])
{
const std::string filename = (argc>1) ? argv[1] : CGAL::data_file_path("meshes/elephant.off");
Mesh sm;
if(!CGAL::IO::read_polygon_mesh(filename, sm))
{
std::cerr << "Invalid input file: " << filename << std::endl;
return EXIT_FAILURE;
}
// Internal color property maps are used if they exist and are called "v:color", "e:color" and "f:color".
auto vcm = sm.add_property_map<Mesh::Vertex_index, CGAL::IO::Color>("v:color").first;
auto ecm = sm.add_property_map<Mesh::Edge_index, CGAL::IO::Color>("e:color").first;
auto fcm = sm.add_property_map<Mesh::Face_index>("f:color", CGAL::IO::white() /*default*/).first;
for(auto v : vertices(sm))
{
if(v.idx()%2)
{ put(vcm, v, CGAL::IO::black()); }
else
{ put(vcm, v, CGAL::IO::blue()); }
}
for(auto e : edges(sm))
{ put(ecm, e, CGAL::IO::gray()); }
put(fcm, *(sm.faces().begin()), CGAL::IO::red());
// Draw!
CGAL::draw(sm);
return EXIT_SUCCESS;
}
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