CGAL users discussion list

If, for example, you enter a degenerate polygon that has 0 area into  
an arrangement, then the number of faces of the arrangement does not  
change.

In your case you may need to do much more than that - you may need to  
repair your polygons. This is an entire different subject though.

Quoting Obergude 
<>:

> okay, but how can i test whether they are not degenerate with an arrangement?
>
> i'm sorry, but this is the first time i'm working with cgal.
>
> regards
> Obergude
>
>
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