[vtkusers] quadricClustering way of working ?

[Sebastien_MARAUX]

Does anybody know exactly how works quadricClustering ?

I use it to decimate an (x,y,height) surface. (ie I set a division
system where all the scene is in the same Z division)

Is it a simple decimation/interpolation of points on a 3D grid 
of X,Y and Z sections ? What do the quadrics have to do 
with this in my case ?

and how triangulation is achieved once the points are 
decimated ? Is it a simple triangulation of each square in my 
case ?

Thanks

Sebastien MARAUX
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