CGAL users discussion list

It is impossible to have an edge with the same source and target  
points, as the geometric embeddings of the edges are x-monotone.

Quoting "cyril bordreuil" 
<>:

> Hi everybody
>
> I have segments that i want to connect. Sometimes my segments are  
> totally connected
> and sometimes it is an open contour.
> I tried to use Arrangement_2 class to find the contour. I build my  
> arrangement from segments and
> when i am travelling the halfedges, i have some halfedges with same  
> source and target vertex.
> Is it possible? and is it possible to remove this kind of halfedges  
> at construction?
> Thank you very much
> Cyril
>
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