CGAL users discussion list

["Sebastien Loriot (GeometryFactory)" <>]

Any complete minimal example showing the problem?

S.

Jayesh Salvi wrote:
> ^ Bump ^
>
> Any thoughts?
> --
> Jayesh
>
>
>
> On Sun, May 29, 2011 at 4:43 PM, Jayesh Salvi 
> <>
>  wrote:
> > Hello,
> >
> > In my program I am creating two polyhedrons from two meshes (In this
> > case a cube and a sphere). Then I convert them to Nef Polyhedra and
> > apply union (+) operation on them. I then convert the returned Nef
> > Polyhedron into a Polyhedron_3, but before doing that I run
> > is_simple() check (just so that if it is not simple, I can generate an
> > error message, instead of assertion failure crash during the
> > conversion process).
> >
> > In this particular case - with a cube and sphere of specific
> > geometries - I observed that after some time the program starts
> > occupying a lot of memory and consumes most of the CPU. From the top
> > utility, I can see that the process is taking >90% memory and >90%
> > CPU. To see what's going on, I put cout statements at various places
> > to see during which part of the program does this start to happen. I
> > was surprised to find out that this happens when I call is_simple()
> > check on the nef polyhedron. At this point either I have to kill the
> > process or the system terminates it.
> >
> > I tried to run the program through valgrind, but as I read elsewhere
> > valgrind can't be used with CGAL programs because of floating point
> > issues.
> >
> > Do you have any suggestions how can I proceed to debug this?
> >
> > Thanks in advance.
> >
> > (My project is available at http://jayesh3.github.com/cadmium/ I can
> > provide instructions on how to reproduce the issue, if you need)
> > --
> > Jayesh