CGAL users discussion list

[Helmi Ben Hmida <>]

In fact, we have created a Semantic 3D Spatial relation qualification 
engine based on CGAL, it presents almost the research progress for the 
last 3-4 mounth.
Actually the purpose is to test our semantic engine with Building 
elements to qualify semantic 3D Spatial relations between them.

For this reason, we re trying to convert an IFC file to off files, just 
for test.
So, if any one has an ideas if there are existing off files for Building 
elements, it will resolve the problem I guess !
H.

Am 09.03.2012 11:53, schrieb Nicholas Mario Wardhana:
> On 9 March 2012 18:10, Helmi Ben Hmida
> <>
>   wrote:
> > Hi,
> > Yes, yes, it will be a closed  polyhedron for sure since also vrml does not
> > suport open geometries.
> > I have tried Bertrand OFF file even u re update, always an empty polyhedron
> > !!!
> Hmm, you are correct. I tested with my own code and it strangely
> didn't load, for both "8 6 0" and "8 6 12"...
> On the other hand, my own cube model (please see attachment; it has
> triangular facets instead of rectangular) was loaded properly.
> I'll get back to you when I find something.
>
> Best regards,
> Nicholas