CGAL users discussion list

Hi,

just a try:

what if you write
typedef CGAL::Triangulation_face_base_2<Et>                 Fb;
instead of using K as template parameter there?

best
        Monique Teillaud

Daniel Duque Campayo wrote:
> Hello,
>
> I have been using the "Euclidean traits xy_3" route in order to build a 2D 
> terrain. Things work fine, but since a lot ot queries are going to be made I 
> would also like to use a hierarchy, and that's when I get into trouble. I 
> include the head of my code, with the commented line that would (in an ideal 
> world) provide the hierarchy. I just want to know if this is possible at all, 
> if not I guess I can a) use vertex+info, then store the "z" value of each 
> vertex as info b) something like inherit the vertex class overriding the 
> "point()" function (too much trouble, I'd probably try a) ).
>
> Thanks very much,
>
> Daniel
>
> #include <CGAL/Exact_predicates_inexact_constructions_kernel.h>
> #include <CGAL/Triangulation_euclidean_traits_xy_3.h>
> #include <CGAL/Delaunay_triangulation_2.h>
> #include <CGAL/Triangulation_hierarchy_2.h>
> #include <CGAL/intersections.h>
>
> #include<vector>
> #include<iostream>
> #include<string>
>
> typedef CGAL::Exact_predicates_inexact_constructions_kernel K;
> typedef CGAL::Triangulation_euclidean_traits_xy_3<K>     Et;
>
> typedef CGAL::Triangulation_vertex_base_2<Et>              Vbb;
> typedef CGAL::Triangulation_hierarchy_vertex_base_2<Vbb>   Vb;
> typedef CGAL::Triangulation_face_base_2<K>                 Fb;
> typedef CGAL::Triangulation_data_structure_2<Vb,Fb>        Tds;
> typedef CGAL::Delaunay_triangulation_2<Et,Tds>             Dt;
> // This won't work:
> //typedef CGAL::Triangulation_hierarchy_2<Dt>                Triangulation;
> // So, settle for:
> typedef Dt                Triangulation;