[vtkusers] Applying Filter to MultiBlockDataset

[Mike Jackson]

I am applying a custom filter to a multiblock data set. Everything  
_seems_ to work and render fine but I have a question about all this.  
My custom filter takes a "vtkUnstructuredGrid" as an input. The data  
is coming from a custom reader that is based on the  
MultiBlockAlgorithm and has 2 "Blocks" of data. Each block happens to  
a "vtkUnstructuredGrid" data object. So am I just getting lucky in  
this respect or should I be specifying something else in either the  
filter or the reader? Or is the filter being applied to _each_ block  
from the MultiBlock Data set?

Thanks for any clarification
--
Mike Jackson
imikejackson & gmail * com