[vtkusers] How to Recover vtkPolyData from vtkThreshold

[Mathieu Malaterre]

John,

	I am not sure I understand your pipeline, but since you are using a 
vtkDataSetSurfaceFilter, why couldn't you just put the vtkThreshold just 
before the vtkDataSetSurfaceFilter ?

HTH
Mathieu

John Platt wrote:
> Hi Shyam,
> 
> Thanks for your suggestion. The polydata has already been through
> vtkDataSetSurfaceFilter, and since speed is an issue, I wanted to avoid
> doubling up. I have opted for a new filter vtkThresholdPolyData instead.
> 
> Thanks again for your interest.
> 
> John.
> 
> -----Original Message-----
> From: vtkusers-bounces at vtk.org [mailto:vtkusers-bounces at vtk.org] On
> Behalf Of R K Shyam Prakash
> Sent: 17 June 2004 10:11
> To: 'John Platt'; vtkusers at vtk.org
> Subject: RE: [vtkusers] How to Recover vtkPolyData from vtkThreshold
> 
> John,
> 
> 
>>>>I would like to render selective cells from vtkPolyData. I tried
>>>
>>> vtkPolyData > vtkThreshold > vtkPolyDataMapper
>>>
>>>>but this does not compile because the output of vtkThreshold is of
>>>
>>>type vtkUnstructuredGrid.
>>>
>>>>Is there anyway of recovering the output of vtkThreshold as
>>>
>>>vtkPolyData or an alternative filter?
> 
> 
> Use the following pipe line.
> vtkPolyData > vtkThreahold > vtkGeometryFilter > vtkPolyDataMapper
> 
> --Shyam
> 
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