[vtkusers] Marching Cubes Algorithm input

[dbremne2 at illinois.edu]

Hello Everyone,

I am trying to using marching cubes to extract an ISO surface from a refined 
octree. If I were to create a uniform voxel grid over my refined octree cells 
and I am certain that my original mesh is manifold and complete (no gaps or 
inconsistencies) what  are the appropriate functions and data  types to pipe 
my data into the VTK marching cubes algorithm?

I've looked at the examples in VTK/Examples/Medical and while I understand 
marching cubes and the VTK process, I'm confused on how to prepare a 
octree for the algorithm. 

Thanks for you help,

Dave