CGAL users discussion list

["Sebastien Loriot (GeometryFactory)" <>]

On 03/11/2012 10:22 PM, Helmi Ben Hmida wrote:
> Please, any solution for my problem
If you don't have a valid polyhedron, then I would say no
(or by hand using base operations)

Sebastien.

> Le 3/9/2012 12:24 PM, Helmi Ben Hmida a écrit :
> > Hello again,
> > In cases, we have the differents 3D points composing the elements, if
> > there is any way to create Nef_Polydehron with out going through the
> > off file, it will be a solution also.
> >
> > If any one has an idea how to do it, may be the problem will be resolved
> >
> > Am 09.03.2012 12:05, schrieb 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