[vtkusers] Concentric circle cut planes

[Joey Mukherjee]

I wish to do a visualization such that I am peeling away surfaces of a 
sphere kind of like peeling an onion.  I plan on having a slide bar 
such that the radius of the sphere gets larger or smaller.  Naturally, 
this is done on a volume of data which is spherical in nature.

Is such a thing possible with VTK?  What would be the basis of my 
pipeline?  Has anyone else done something similar?

Joey