CGAL users discussion list

[tang <>]

Dear all,

I found that the OFF file generated by CGAL has some duplicated vertices
(a1.off), I tried to remove these vertices by simplifying surface mesh with
short edge rule:
SimplifySurfaceMeshCGAL(1.0e-4);

Howerver, the duplicated vertices are still here after simplification
(a11.off). Could anyone help me to take a look at it?

Thanks,
Zhanghong Tang


PS: the simplification function is here
a1.off <http://cgal-discuss.949826.n4.nabble.com/file/n4655966/a1.off>  
a11.off <http://cgal-discuss.949826.n4.nabble.com/file/n4655966/a11.off>  
void SimplifySurfaceMeshCGAL(double edgelengthmin)
{
        Polyhedron obj;
  std::ifstream stream("a1.off");
  stream >> obj;
        // edges will be removed until there is at most one edge
        // shorter than this:
        double minimum_edge_length = edgelengthmin*edgelengthmin;  // squared
        Cost_stop_predicate<Polyhedron> stop(minimum_edge_length);

        int r = SMS::edge_collapse(obj, stop,
                                   
CGAL::vertex_index_map(boost::get(CGAL::vertex_external_index, obj))
                                   
.edge_index_map(boost::get(CGAL::edge_external_index,obj))
                                   
.get_cost(SMS::Edge_length_cost<Polyhedron>())
                                   
.get_placement(SMS::Midpoint_placement<Polyhedron>())
                );
        std::ofstream log("a11.off");
        log << obj; 
}




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