CGAL users discussion list

["Laurent Rineau (GeometryFactory)" <>]

Le Dimanche 11 Avril 2010 15:20:57, Song Lin a écrit :
> I tried again and it works. Really appreciated!
> 
> By the way, I tried 0 as alpha value and it returns different kinds of
> EXTERIOR, SINGULAR, REGULAR and INTERIOR in different situations.
> I don't konw why I just tried 0 because in an example it uses 0 as alpha
> valus to build Alpha_shape_3:
> 
> list<Weighted_point> lwp;
> Alpha_shape_3  as(lwp.begin(), lwp.end(), 0, Alpha_shape_3::GENERAL);

At that point, you better read the CGAL manual (or the scientific 
literature), 
to learn what the alpha value means.

-- 
Laurent Rineau, PhD
Release Manager of the CGAL Project       http://www.cgal.org/
R&D Engineer at GeometryFactory           http://www.geometryfactory.com/