CGAL users discussion list

 wrote:
>  wrote:
>
> > Hello,
> >
> > What is the easiest way to change only the geometric information 
> > associated with the vertices of a Delaunay triangulation? (e.g. in 
> > order to translate or rotate the hole point cloud)
>
> As mentioned in the user manual of 3D Triangulation, using 
> Triangulation_vertex_base_with_info_3 is the simplest way.

More precisely, it is a way to _add_ information.

You can add the rotation information in all vertices (but it will be 
stored in each vertex even if it is common...).

If you want to change the point in a vertex, there is a
v.set_point ( Point p) method in the TriangulationVertexBase_3 concept. 
But you can hardly use this for changing the point after a rotation, due 
to problems that would arise with arithmetics.