CGAL users discussion list

["Sebastien Loriot (GeometryFactory)" <>]

On 04/14/2014 04:22 PM, Philip Moseley wrote:
> Hello,
>
> I'm using CGAL triangulations to mesh a set of points, and in some
> circumstances I get the following error:
>
> terminate called after throwing an instance of
> 'CGAL::Precondition_exception'
>    what():  CGAL ERROR: precondition violation!
> Expr: orientation(p0, p1, p2, p3) == POSITIVE
> File: /usr/include/CGAL/Regular_triangulation_3.h
> Line: 1010
> Aborted
>
> I'm running Debian unstable, and this problem appears with the version
> 4.4-1 in the repositories, as well as the 4.4 release I downloaded
> manually from the CGAL website. However, the code works as expected with
> the older 4.0-5 in the Debian repos.
>
> Attached is a short example which fails with this error. I receive the
> error when itr==164. With CGAL=4.0-5 this test program ends when
> itr==219, which I believe to be correct.
>
> Is this a bug, or am I doing something foolish? Thanks!
> Philip
Your code is working with CGAL-4.2 but not with CGAL-4.3 nor CGAL-4.4.
I'll investigate and let you know.

Sebastien.