#include <iostream>
#include <fstream>
#include <CGAL/Simple_cartesian.h>
#include <CGAL/Polyhedron_3.h>
#include <CGAL/IO/Polyhedron_iostream.h>
#include <CGAL/boost/graph/graph_traits_Polyhedron_3.h>
#include <CGAL/Surface_mesh_simplification/edge_collapse.h>
#include <CGAL/Surface_mesh_simplification/Policies/Edge_collapse/Count_stop_predicate.h>
#include <CGAL/Surface_mesh_simplification/Policies/Edge_collapse/LindstromTurk_cost.h>
#include <CGAL/Surface_mesh_simplification/Policies/Edge_collapse/LindstromTurk_placement.h>
#include <CGAL/Surface_mesh_simplification/Policies/Edge_collapse/Bounded_normal_change_placement.h>
namespace SMS = CGAL::Surface_mesh_simplification ;
int main( int argc, char** argv )
{
Surface_mesh surface_mesh;
std::ifstream is(argc > 1 ? argv[1] : "data/fold.off") ; is >> surface_mesh ;
SMS::Count_stop_predicate<Surface_mesh> stop(num_halfedges(surface_mesh)/2 - 1);
typedef SMS::Bounded_normal_change_placement<SMS::LindstromTurk_placement<Surface_mesh> > Placement;
stop,
CGAL::parameters::vertex_index_map(get(CGAL::vertex_external_index,surface_mesh))
.halfedge_index_map (get(CGAL::halfedge_external_index ,surface_mesh))
.get_cost (SMS::LindstromTurk_cost<Surface_mesh>())
.get_placement(Placement())
);
std::ofstream os( argc > 2 ? argv[2] : "out.off" ) ; os << surface_mesh ;
return 0 ;
}