CGAL users discussion list

[tang <>]

Dear all,

I installed latest CGAL 4.3 and run the following code:

void SimplifySurfaceMeshCGAL(Polyhedron *obj,double edgelengthmin)
{
        double minimum_edge_length = edgelengthmin*edgelengthmin;  // squared
        double len;
{std::ofstream log("update.off");log << *obj; } update.off
<http://cgal-discuss.949826.n4.nabble.com/file/n4658645/update.off>  
        int count=0,n20=0;
        while(1)
        {
                int found=0;
                Halfedge_iterator eb0=obj->halfedges_begin() ;
                for( Polyhedron::Halfedge_iterator eb = 
obj->halfedges_begin() ; eb !=
obj->halfedges_end() ; ++ eb )
                {
                        len=get_edge_length<Polyhedron>(eb);
                        if(len<minimum_edge_length)
                        {
                                *obj->join_vertex(eb);
                                eb=eb0 ;
                                if(found==0)found=1;
count++;
int n2=0;
for (  Facet_iterator i = obj->facets_begin(); i != obj->facets_end(); ++i) 
{
        Halfedge_facet_circulator j = i->facet_begin();
        if((int)CGAL::circulator_size(j)==2)n2++;
}
if(n2>n20)
{
                printf("%d %d\n",count,n2);
                n20=n2;
{std::ofstream log("update1.off");log << *obj; } update1.off
<http://cgal-discuss.949826.n4.nabble.com/file/n4658645/update1.off>  
exit(0);
}
                        }
                        else
                                eb0=eb;
                }
                if(found==0)break;
        }
}


I found that every time running the function "join_vertex", two degenerated
facets (facets contains only two vertices) generated. Is it a bug of the
function "join_vertex"? If not, how can I remove the degenerated facets?

Thanks



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