[vtkusers] If N filters compose a pipeline, do we have N dat aObjects ?

[Miller, James V (Research)]

Depends on how you are managing the memory in the pipeline.

Some filters will pass along a reference to certain blocks
of data rather than copy the data.  For instance, a filter 
that operates on the scalars will pass the normals along 
without performing a copy.  So the memory will only increase
by the amount of new scalars.

You can also set up the pipeline such that a filter will
release the memory for its input once it is done executing.
In this way, the memory footprint will increase to 2 Mo 
while the filter is executing then descrease back down to 
1 Mo.  But it will not increase to the 10 Mo you are 
worried about.

Take a look at the ReleaseData features on Process and Data
objects.



> -----Original Message-----
> From: Sebastien Auclair [mailto:sxa at fluent.com]
> Sent: Friday, January 24, 2003 2:35 PM
> To: vtkusers at public.kitware.com
> Subject: [vtkusers] If N filters compose a pipeline, do we have N
> dataObjects ?
> 
> 
> If a pipeline is composed of N filters, do we have N DataObjects ?
> If a Huge Mesh DataObject of 1 Mo is the source in a pipeline with 10
> filters,  will we end-up with 10 Mo of DataObjects ?
> 
> 
> 
> Thanks !
> 
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