CGAL users discussion list

[Menelaos Karavelas <>]

Hi Stefan.

If I remember correctly circulators are only defined for 2-dimensional 
triangulations (and thus Apollonius graphs as well).
In that respect, you really cannot avoid testing for the dimension of your 
Apollonius graph.

- m.

On 11 Oct 2013, at 01:18, Stefan Salewski wrote:

> On Thu, 2013-10-10 at 22:54 +0200, Stefan Salewski wrote:
>> May the problem be simple that the output loop fails when we have only
>> one visible site?
> 
> After reading (again) some documentation about CGAL's circulators, I
> really guess that there is a bug.
> 
> It is clear that I have to test for empty graph, maybe something like
> circ == NULL (I read about tests for empty ranges, but I guess that will
> not work well for hulls.)
> 
> But ++circ should never give invalid values for circulators, from my
> understanding of the documentation. But segmentation fault indicates
> that there is an undefined value.
> 
> So it seems that I really have to handle the case with only one visible
> side separately, which makes my code a bit ugly.
> 
> 
> 
> -- 
> You are currently subscribed to cgal-discuss.
> To unsubscribe or access the archives, go to
> https://sympa.inria.fr/sympa/info/cgal-discuss
> 
>