[Paraview] default behavior change for contour filter

[Aashish Chaudhary]

May be it is obvious, but why we don't compute normal's for
vtkPolyData in the first place? If the input has normal's array, then
I would assume that output should have normal's by default.


On Wed, Aug 15, 2012 at 12:01 PM, Andy Bauer <andy.bauer at kitware.com> wrote:
> I'd like to change ParaView's default behavior of the contour filter.
> Currently the default is to compute normals and not compute gradients or
> scalars. These defaults are only used for structured data sets (i.e.
> vtkStructuredGrid, vtkImageData, and vtkRectilinearGrid) and are not options
> when isosurfacing for vtkPolyData or vtkUnstructuredGrids. When the input
> data set is a multiblock data set that contains both structured and
> unstructured data sets the output for the current code results in a
> multiblock data set with partial arrays (Normals for the structured data
> sets and the contoured variable for the unstructured data sets). The change
> I'd like to make is to make Compute Normals off by default and Compute
> Scalars on by default so that the output is a bit more consistent.
>
> Does anyone think that this is a significant change and shouldn't be done?
>
> Thanks,
> Andy
>
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-- 
| Aashish Chaudhary
| R&D Engineer
| Kitware Inc.
| www.kitware.com