CGAL users discussion list

["Sebastien Loriot (GeometryFactory)" <>]

Did you see that function?

https://doc.cgal.org/latest/Triangulation_2/group__PkgDrawTriangulation2.html

Best,

Sebastien.

On 8/2/22 10:14 AM,  wrote:
> Hi,
>
> I would like to display 2D Delaunay triangulation in a console 
> application just like I display an int a=5 (for example list of all 
> vertices corresponding to triangles) .
>
> I think that I would need to overload << operator for2D Delaunay 
> triangulation but I have some problems.
>
> I can see that "cout << dt", where dt is an object of 2D Delaunay 
> triangulation class sort of works, but I don't understand the output 
> (see input and output below).
>
> I tried to overload the << operator but it doesn't change anything:
>
> ofstream& operator << (ofstream& stream, const Delaunay& dt1)
> {
> cout << "Number of faces is:";
> stream << dt1.number_of_faces();
> return stream;
> }
>
> Regards
>
> Michał Michalak
>
> Input
>
> (the first two columns are XY, then elevation, and last column is ID - 
> because I use Projection_traits_xy_3 and 
> Triangulation_vertex_base_with_info_2):
>
> 0 0 0 1
> 1 0 0 2
> 0 1 0 3
>
> Output:
>
> 4 4 2
> 1 0 0
> 0 1 0
> 0 0 0
>
> 2 0 3
> 1 2 3
> 0 1 3
> 2 1 0
>
> 2 1 3
> 0 2 3
> 1 0 3
> 2 0 1
>
>
> --
> You are currently subscribed to cgal-discuss.
> To unsubscribe or access the archives, go to
> https://sympa.inria.fr/sympa/info/cgal-discuss