CGAL users discussion list

[Michael Hemmer <>]

Hi Ian,

seem that you have not chosen the right point type. Chose the one from 
the same Kernel that you use.

Michael

Ian Bentley wrote:
>      Hello , new to CGAL, and struggling with some basic concepts.
>
> I create a std::vector< CGAL::Point_2< CGAL::Cartesian<double> > and 
> fill it with a series of points often generated at random, but 
> sometimes specified.  Anyways, the exact location of these points is 
> not particularly important, and as long as they are accurate to an 
> epsilon of 0.001, Everything that I am concerned with will be fine. 
>  This is why I chose Cartesian<double> for my kernel, and that seems 
> to work just fine.
>
> Later however, I was looking to use this vector to create a delaunay 
> triangulation of these points.  Looking at the examples: 
> http://www.cgal.org/Manual/last/doc_html/cgal_manual/Triangulation_2/Chapter_main.html there, 
> I put together the following code:
>
> #include <CGAL/Exact_predicates_inexact_constructions_kernel.h>
> #include <CGAL/Delaunay_triangulation_2.h>
>
> typedef CGAL::Exact_predicates_inexact_constructions_kernel K;
>
> void network::buildDelaunayTriangulation(){
>         CGAL::Delaunay_triangulation_2<K> l_delaunayTriangulation;
>         std::vector<point >::iterator it;
>         for(it=m_locations.begin(); it < m_locations.end(); it++){
>                 l_delaunayTriangulation.insert((*it));
>         }
> }
>
> where m_locations is the vector of points created earlier.
>
> When I run this code however I receive the error:
>
> model/network.cc:29: error: no matching function for call to 
> ‘CGAL::Delaunay_triangulation_2<CGAL::Filtered_kernel<CGAL::Simple_cartesian<double> 
> >, 
> CGAL::Triangulation_data_structure_2<CGAL::Triangulation_vertex_base_2<CGAL::Filtered_kernel<CGAL::Simple_cartesian<double> 
> >, CGAL::Triangulation_ds_vertex_base_2<void> >, 
> CGAL::Triangulation_ds_face_base_2<void> > 
> >::insert(CGAL::Point_2<CGAL::Cartesian<double> >&)’
>
> With a series of suggestions.
>
> I suspect this is because I use the 
> Exact_predicates_inexact_constructions_kernel to build the delaunay, 
> but I'm not sure.  How can I fix this code?
>
> --
> Ian Bentley
> M.Sc. Student
> Queen's University
> Kingston, Ontario
>
>
> --
> Ian Bentley
> M.Sc. Student
> Queen's University
> Kingston, Ontario