CGAL users discussion list

["Sebastien Loriot (GeometryFactory)" <>]

On 03/26/2013 03:47 AM, schrodingersnewcat wrote:
> terminate called after throwing an instance of 'CGAL::Precondition_exception'
>    what():  CGAL ERROR: precondition violation!
> Expr: z != 0
> File: /home/rcf-proj/jdo/friesz/lib64/include/CGAL/GMP/Gmpq_type.h
> Line: 306
Not really helpful. Did you check that you have no degenerated objects?
For example a segment with two identical endpoints?

> I get this error when I do a distance query on an AABB tree.  Is there any
> situation where this might happen with multiple AABB trees in my program?
> Or with a memory issue?
Are you using AABB tree in different thread? which version of CGAL are 
you using?

> I'm having trouble creating a short example program that exhibits the same
> error.  Any help would be appreciated.
It would be nice to at least achieve to print the primitives than cause 
the error.

Sebastien.

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