CGAL users discussion list

[Matthieu Chavent <>]

I resolved my problem with compiling with -DCGAL_CH_NO_POSTCONDITIONS
and now it's work well but I would like to know how this problem appears
and if I disable this option it possible to have concave objects?

Thank you in advance!

Matthieu Chavent a écrit :
> Hello cgal users!
>
> I performed a convex hull of a set a 3D points. I know that the set of 
> points define a convex volume. I use the function CGAL::convex_hull_3 
> on my points list. I  obtain a Polyhedron_3 in almost cases but one 
> time a have the error message:
>
> CGAL error: postcondition violation!
> Expr: is_strongly_convex_3(P, traits)
> File: /home/Chavent_Matthieu/CGAL-3.2.1/include/CGAL/convex_hull_3.h
> Line: 468
> Aborted (core dumped)
>
> It is very strange because I know that the sets of points that form 
> the Polyhedron define a convex volume: So, I would like to know if 
> somebody had the same problem and How can I get through this error.
>
> Thank you in advance!



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Matthieu Chavent
LORIA
PhD student

tel: ++33(0)3-54-95-86-05

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