[vtkusers] Is there a way to identify "groups" of cells in a vtk unstructured??????

[D.M.P.Davies]

nikhil butala wrote:

> Anyone?????
>
> This problem is in the archives, but no one ever
> posted a solution.
>
> -- is there a
> way to distinguish groups of cells by material?
>               Also, I wish to apply different boundary condition to
> each
> group of cell..... Is this possible in VTK??

If You only use node(scalar) data) you can give the cells a value and
put them through a vtkThreshold with SetAttributeToUseCellData . I use
it to separate a model into heaps (could be different material
components) and then look and regions of a model - have some (embedded)
tcl and could send along with  picture if you're interested and are able
to work this way.

Cheers
Dave Davies