[vtkusers] Delaunay Triangulation

[Jacob Bensabat]

Hi
I am working with vtkDelaunay2D class in order to create a triangulation 
of a 2d dataset with and without constraints. I have seen that
depending on the value of the Tolerance parameter, I can get absurdities 
in both cases. Also the success of the triangulation depends of the
density of the points within a specific area, then the tringulation  
becomes more sensitive to the toelerance parameter.
My question is whether there is a rational way to determine Tolerance so 
that for a given set of points, well distributed within an area, I can 
ensure the
success of the triangulation ?

thanks
jac.