CGAL users discussion list

Matthieu Chavent wrote:
>  I found a lot of things in the manual... For the question about facets, 
> I though that I missed a link.. I work a lot with the online manual. 
> Especially with the triangulation_3 part.

fine

> May be, an idea would be to 
> add a global diagram to sum up all the methods that we can use to move 
> in the triangulation (from a cell, a facet...).

do you think all this would fit in a diagram...?

> It is just a suggestion 
> and I would try to create such a figure in few weeks, if you are 
> interested.

ok

> Andreas Fabri a écrit :
>
> > Hi Matthieu,
> >
> > My question about the quality of the documentation was serious.
> > Did you happy programming before reading the documentation (what
> > I admittedly often do), or did you try to find it in the manual,
> > and gave up after a couple of minutes?
> >
> > andreas
> >
> >
> > Matthieu Chavent wrote:
> >
> > > Thanks to Andreas Fabri and Laurent Rineau and sorry for neewbies 
> > > questions.
> > >
> > > Regards,
> > >
> > >          Matthieu Chavent.
> > >
> > > Laurent Rineau a écrit :
> > >
> > > > On Tuesday 16 October 2007 17:16:07 Matthieu Chavent wrote:
> > > >  
> > > >
> > > > > Good afternoon,
> > > > > I use triangulation_3 and and use a facet_iterator. I would like to 
> > > > > know
> > > > > if it possible to retrieve from a facet the two cell_handles of the 
> > > > > two
> > > > > cells which  have the facet in common, in a simple manner.
> > > > >     
> > > >
> > > >
> > > > Well, I quote here the definition of Facet, from the reference page 
> > > > "TriangulationDataStructure_3":
> > > >
> > > > "typedef std::pair<Cell_handle, int> Facet;
> > > >        (c,i) is the facet of c opposite to the vertex of index i."
> > > >
> > > > So, if "f_it" is a facet iterator, "f_it->first" is one of the two 
> > > > cells you request, and "f_it->first->neighbor(f_it->second)" is the 
> > > > other one (see the reference page 
> > > > "TriangulationDataStructure_3::Cell" for a description of 
> > > > Cell::neighbor).
> > > >
> > > > Best regards,
> > > >
> > > >