CGAL users discussion list

[Andreas Fabri <>]

Kwok Jasper wrote:
> Excuse me, may I ask something?
> 
> I have tried the code below
> and I am not sure if I have used the function incident_vertices correctly.
> May I ask if anyone is willing to tell me whether I have used that 
> function properly?
> 
> 
> typedef CGAL::Exact_predicates_inexact_constructions_kernel K1;
> typedef CGAL::Delaunay_triangulation_3<K1> Triangulation;
> typedef Triangulation::Point Point_tr;
> 
> Triangulation Tr;
> 
> Vertex_handle v =  Tr.insert(Point_tr(0,0,0));
>  Tr.insert(Point_tr(40,20,10));   
>                                              //...insert some more points
> 
>     vector<Vertex_handle> con;
>     con.resize(800);
> 
>     vector <Vertex_handle>::iterator start_inci = con.begin();
>     vector<Vertex_handle>::iterator end_inci = con.end();
>     vector<Vertex_handle>::iterator curr_inci;
> 
>      for(curr_inci = start_inci; curr_inci != end_inci; ++curr_inci)
>      {
>             //do sth with the vertex handles.
>      }  
> 
> 
> And may I ask one more thing?
> If there is a Vertex_handle v, then is it possible to get the x, y 
> coordinate of the vertex represented by v?
> I have looked at the manual of 2D and 3D triangulation and cannot find 
> any examples about it.
> May I ask if there is some method for doing that?
> 
> Thank you very much for your attention.

Once you have found the reference manual page for Vertex, things will
become obvious.

On this page
http://www.cgal.org/Manual/3.4/doc_html/cgal_manual/Triangulation_2_ref/Class_Triangulation_2.html

scroll down to the end, and click on

TriangulationDataStructure_2::Face
TriangulationDataStructure_2::Vertex

to see what you can do with a vertex.

andreas


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