[vtkusers] remeshing a planar region

[sebastian ordas]

Dear all,

I would like to regularize the normals and provide a better 
triangulation to a rectangular region (planar region) as can be seen in 
the snapshots bellow:

http://ScrnSht.com/safdvh
http://ScrnSht.com/nwuwcu

The remeshing has to be fast, as it is for a real-time application

I tried vtkDelaunay2D with poor results: the triangulation is not 
complete and internal holes are filled out
Maybe I´m not using the optimal parameters.

       vtkSmartPointer<vtkDelaunay2D> del = 
vtkSmartPointer<vtkDelaunay2D>::New();
       del->SetInputConnection(planeCleaner->GetOutputPort());
       del->BoundingTriangulationOff();
       del->SetTolerance(0.001);
       del->SetAlpha(5.0);

Does anyone can provide a hint?

thank you,
sebastian