CGAL users discussion list

[muhibur <>]

Hi Eric,
Yes, I am inserting conic curves and it happens when I try inserting them
into the arrangement, not when I create the curves themselves. For example,
the error happens when I tried to insert the following two curves (using
the aggregate insert_curves) routine:
Curve 1: 1 1 0 -85.892 -83.638 3591.88
Curve 2: 1 52.2892 12.098 542.364 4855.69 115594
I hope this information is enough.
Thanks,
-Muhib

On Sat, 24 Jan 2009 16:31:10 +0200, Eric Berberich 
<>
wrote:
> muhibur wrote:
>> Hi
>> When I try inserting curves into the arrangement, for some curves i get
>> the
>> following error - assertion violation, dir_res!=EQUAL. Could anybody
>> suggest as to why this error occurs and how to avoid it?
>> Thanks,
>> Muhib.
> 
> Dear Muhib,
> 
> first of all, it would be nice if you provide more information, e.g., 
> which curves (maybe with data of a "minimal" example), which CGAL 
> version, etc...
> 
> My guess is that you are inserting conic curves, as this error only 
> occurs in exactly one file.
> Arr_geometry_traits/Conic_x_monotone_arc_2.h
> 
> It seems that you construct a 0-dimensional "arc", which is not allowed. 
> The question is, whether the construction is during the arrangement 
> computation (in which case there might be a bug in the package), or 
> while you are creating your own input curves. But this information is 
> also missing ... so, please provide more details which helps us to help
> you.
> 
> eriC
>