CGAL users discussion list

["Suejung B. Huh" <>]

Much Thanks, Andreas and Manuel,


Given a facet and a cell, what should I do to figure out the cell has the facet?

Also what is the usagae of Cell handle c here? 

t.incident_cells ( Cell_handle c,  int i,  int j)
        


-s

On Wed, Oct 14, 2009 at 11:22 AM, Andreas Fabri <> wrote:

Hello Suejung,

this is covered in the Hello World programs in
http://www.cgal.org/Manual/last/doc_html/cgal_manual/Introduction/Chapter_main.html

best regards,

andreas


Suejung B. Huh wrote:

Thanks, Manuel,



But does anyone have an example code to use "OutputIterator"?

I am not sure how to use

t.finite_incident_cells ( Vertex_handle v, OutputIterator cells)

without ending condition.

Thanks in advance,

-s

On Fri, Oct 9, 2009 at 1:43 AM, Manuel Caroli < <mailto:>> wrote:

   Dear Suejung,

    <mailto:> wrote:
   [...]


       int main()
       {
        Delaunay T;

        std::ifstream in("data/voronoi.cin");

        Point p;
        while(in >> p){
          T.insert(p);
        }



        cout << "All Cells ----------------------------\n";
        Cell_iterator cit =T.cells_begin();
        for ( ; cit !=T.cells_end(); ++cit) {
          if (! T.is_infinite(cit)) continue;

   note that there is a Finite_cells_iterator that does this automatically


          //  T.incident_edges(cit) ?????? <<--- Want to find edges!!!

   I am not sure to understand what you want to do. What do you mean by
   edges incident to a cell? These are the edges of the cell that you
   can extract immediately. There is a function incident_edges that
   gives you the edges incident to a *vertex*. In this case you have to
   provide it with an output iterator as second argument.

   To understand the internal representation of a triangulation please
   read chapter 35.1 of the user manual (of CGAL 3.6):
   http://www.cgal.org/Manual/last/doc_html/cgal_manual/Triangulation_3/Chapter_main.html
   For the available access functions see the reference documentation:
   http://www.cgal.org/Manual/last/doc_html/cgal_manual/Triangulation_3_ref/Class_Triangulation_3.html

   hope this helps

   Manuel



        }

        return 0;
       }


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