CGAL users discussion list

["Laurent Rineau (GeometryFactory)" <>]

Le Samedi 20 Mars 2010 16:29:15, J. Jin a écrit :
> Dear all,
> 
> I want to know whether there is a general way to convert an
> iterator/circulator to a handle.

Most CGAL iterators/circulators type are castable to the corresponding handle 
implicitly.

> Consider the following example.
> I want to traverse in a mesh with type Triangulation_data_structure_2 for
> some vertex in a breadth first search manner.
> I start with a vertex(suppose I have its handle), so I can use circulators
> to check all its neighbors.
> But... here is the problem. How can I continue?
> The method incident_vertices needs an input of type Vertex_handle, but what
> I got is of type Vertex_circulator.

You can use circulators and iterators as if they were handles.

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