CGAL users discussion list

[Andreas Fabri <>]

Dennis Endt wrote:
> Monique Teillaud schrieb:
> > If you are lucky (= your points really don't belong to a plane
> > parallel to any xy,xz,yz plane), you will get the same triangulation
> > three times, which is not what you want (I guess so). Yhen using one
> > of these random traits should give you what you want.
> > If you are less lucky, one of the computationa will crash. Then, use
> > one of the other two.
> > I'm afraid that's the best you can do if you don't know anything about
> > your data, except the fact that they are almost coplanar.
> >
> > best,
> >     Monique Teillaud
>
> Hi,
>
> thanks so far for your help.
>
> My last question is:
> How can I check if a computational will crash? What is the best method
> for this?


You should

#include <CGAL/Cristall_ball.h>

It provides a constructor with an unsigned int specifying the number
of milliseconds you want to look into the future.

It's an undocumented feature, but that is what we recommend for
avoiding planes to fall from the sky.



> I tried to use is_valid(), but this didn`t worked. Is it enough to check
> for the number_of_vertices != 0 of a fassade?
>
> Best,
> Dennis