CGAL users discussion list

[Olivier Devillers <>]

Le 3/27/14 7:52 PM, gupta61 a écrit :
> Hi,
>
> I was wondering if somebody can explain the error below. I am not really
> sure what to look for in my code before knowing what kind of situation will
> give "non-empty sphere" error.
>
> non-empty sphere
> terminate called after throwing an instance of 'CGAL::Assertion_exception'
>    what():  CGAL ERROR: assertion violation!
> Expr: false
> File: Delaunay_triangulation_3.h
> Line: 1505
> Aborted (core dumped)

The line numbers does not match CGAL-4.3

But anyway, this error is given by a call to the is_valid function,
meaning that your triangulation is not valid.

A possible explanation is that you compute it with
floating poinr number and not with a robust kernel.
Read this: http://www.cgal.org/philosophy.html