CGAL users discussion list

[Laurent Rineau <>]

On Wednesday 08 August 2007 17:36:16 Bernhard Kornberger wrote:
> Here is a minimal example:
>
> dist.ist.tugraz.at/delaunaytest.tar.gz
>
> The source code is basically:
>
>
> #include "CGAL/Exact_predicates_exact_constructions_kernel.h"
> #include <CGAL/Delaunay_triangulation_3.h>
> #include <CGAL/Triangulation_hierarchy_3.h>
> #include <CGAL/Triangulation_vertex_base_with_info_3.h>
>
> typedef CGAL::Exact_predicates_exact_constructions_kernel K;
> typedef CGAL::Triangulation_vertex_base_with_info_3<int, K> Vb;
> typedef CGAL::Triangulation_hierarchy_vertex_base_3<Vb>  Vbh;

Insert here:
  typedef CGAL::Triangulation_cell_base_3<K> Cb;

> typedef CGAL::Triangulation_data_structure_3<Vbh>        Tds;

Here you need to precise Cb:
  typedef CGAL::Triangulation_data_structure_3<Vbh, Cb>    Tds;

The way you have instanciated your Tds, by precising only the vertex base, 
you 
have got the Triangulation_ds_cell_base_3<K> as cell base, which is not a 
model of the concept TriangulationCellBase_3.

Actually, examples/Triangulation_3/hierarchy.cpp does not follow the 
documentation requirements either. It works only because it does not class 
dual().

-- 
Laurent Rineau
INRIA - Sophia Antipolis
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Tel: +33 4 92 38 78 62