[Paraview-developers] Composite Data Redesign

[Utkarsh Ayachit]

John,

I am done with most of the coding, so now basically waiting for feedback 
and the dashboard to clean up before committing the changes. Just to 
clarify, the vtkMultiPieceDataSet part won't get implemented in this 
pass. There's still no consensus here on the necessity of it  given that 
the same can be achieved by vtkMultiBlockDataSet or whether it should be 
a new class or simply an ivar (or some other qualification) on 
vtkMultiBlockDataSet.

Utkarsh

John Biddiscombe wrote:
> Utkarsh
> 
> I'm very keen to try out the MultiPiece dataset. I think it will make a 
> significant difference to the development of several readers for data 
> that has been dumped into files - one per processor. Do you have a 
> likely timeframe in which you'll be commiting things?
> 
> JB
> 
>> Folks,
>>
>> Composite data pipeline is undergoing a redesign to overcome some of 
>> its current limitations.  Details of the issues, the new design and 
>> the implementation are available at:
>>
>> http://www.vtk.org/Wiki/VTK/Composite_Data_Redesign
>>
>> To summarize: vtkCompositeDataSet has been modified to support a full 
>> tree datastructure instead of a table of tables approach used by the 
>> previous implementation. It is possible to traverse the tree using 
>> iterators. The iterators are more powerful than before making it 
>> possible to not only access the datasets, but also change them. 
>> vtkHierarchicalDataSet and vtkMultiGroupDataSet have been deprecated. 
>> The only concrete composite datasets available are 
>> vtkMultiBlockDataSet, vtkHierarchicalBoxDataSet and vtkTemporalDataSet.
>>
>> The new code is not available in CVS yet. I'll wait a few days for 
>> people to respond before committing it.
>>
>> Utkarsh
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> 
>