[vtkusers] recent vtkClipDataSet can give non-tets?

[Adrian Umpleby]

>>>> ...I've recently been using it on some upgraded Linux boxes which 
>>>> have version 4.4 of vtk, and now I find a whole load of wedges 
>>>> coming out of vtkClipDataSet!
> ...
>> I was simply wondering if this could be acknowledged as "the way it's 
>> supposed to be" now (i.e. the docs need updating), or maybe some sort 
>> of bizarre bug (resulting mesh appears to conform correctly, so I 
>> find this hard to believe), or an oversight after some recent change.
>
> 	vtkClipDataSet now returns wedges and tets. This is done because this 
> way a case table can be used that is much faster than the previous 
> method.
>
> 	In vtkClipVolume there is a flag, Mixed3DCellGeneration, that allows 
> you to force the generation of tets. This flag is not found in 
> vtkClipDataSet, I suspect it could be added.

Thanks Mathieu - that's useful to know.

Adrian