CGAL users discussion list

["Laurent Rineau (CGAL/GeometryFactory)" <>]

Le Friday 18 July 2014 13:07:01 Benjamin Kehlet a écrit :
> Ah, I see. Thanks!
> 
> I will try to come with an implementation of
> Construct_initial_points() that makes sure all components are
> represented.

That will probably not be sufficient. If I remember well, when the domain has 
sharp features, it is possible that initial points are inserted only on sharp 
features. That might not be sufficient in you case, if you have a cube (with 
sharp features) containing a sphere (without sharp features).


> Is the reason for shooting random rays that the points should be
> spread out over the surface or could I just pick some points (eg. via
> the vertex iterator)? (I generally find (bug) reproducability a nice
> feature :) )

You can pick points, but you should ensure that the points are not too close 
from each other, compared to the sizing criteria you specify. As the meshing 
algorithm only *insert* new points, if two initial points are closed, there 
will be a short edge between then, that will remain in the mesh.

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