[vtk-developers] vtkIntegrateAttributes...closed surface volume?

[Bill Lorensen]

What is the problem with vtkMassProperties?

On Thu, Nov 12, 2009 at 3:20 PM, Gerrick Bivins
<gbivins at objectreservoir.com> wrote:
> Hi Berk,
> Sorry about that. I thought I could simply replace vtkMassProperties with
> vtkIntegrateAttributes and it would work.
> I was previously attaching the vtkIntegrateAttributes after my geometry
> filter (this was the  for vtkMassProperties), but now I've changed my
> pipeline to attach the vtkIntegrateAttributes filter to the output of the
> source.
> This however it is resulting in an error .
> No integrated pointdata arrays are calculated and the only celldata array is
> null, even
> though vtkIntegrateAttributes.GetOutputPort().GetCellData().GetNumberOfArrays()
> returns 1.
> This is what my pipeline looks like:
> vtkMultiBlockDataSetAlgorithm
> vtkArrayCalculator
> vtkClipDataset
> vtkIntegrateAttributes
> Any suggestions?
> Gerrick
>
> On Thu, Nov 12, 2009 at 1:45 PM, Berk Geveci <berk.geveci at kitware.com>
> wrote:
>>
>> I am not sure I follow. IntegrateAttributes should not produce a
>> volume if you apply it on a surface (i.e. polydata). It should produce
>> an area. It can only calculate the volume of 3D cells.
>>
>> -berk
>>
>> On Thu, Nov 12, 2009 at 12:37 PM, Gerrick Bivins
>> <gbivins at objectreservoir.com> wrote:
>> > Hi All,
>> > I'm looking @ using the class vtkIntegrateAttributes (currently in
>> > Paraview)
>> > instead of vtkMassProperties to calculate the volume of datasets.
>> > I'm wondering why vtkIntegrateAttributes doesn't calculate the volume of
>> > a
>> > closed surface outside of paraview but when used in paraview, it reports
>> > the
>> > volume.
>> > Also, why isn't the filter able to calculate the volume of a closed
>> > surface?
>> > Thanks for any input here,
>> > Gerrick
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