CGAL users discussion list

["Sebastien Loriot (GeometryFactory)" <>]

The precondition message is explicit:
Cannot contruct a degenerate segment which means that the endpoint of
your segment cannot be identical.

Sebastien.


On 07/20/2011 11:49 PM, sara123 wrote:
> hi,
> After several execution of my program I receive this error message:
>
> CGAL error: precondition violation!
> Expression : ! is_degen
> File       : c:\program files\cgal-3.6.1\include\cgal\arr_segment_traits_2.h
> Line       : 125
> Explanation: Cannot contruct a degenerate segment.
> Refer to the bug-reporting instructions at
> http://www.cgal.org/bug_report.html
>
> Why this happens?
>
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