[vtk-developers] vtkAngularPeriodicFilter and vtkTransformFilter

David E DeMarle dave.demarle at kitware.com
Thu Mar 10 10:55:26 EST 2016


I believe transform filter doesn't transform vector results because it
should not transform normals and similar quantities which would be
invalidated by the transformation.



David E DeMarle
Kitware, Inc.
R&D Engineer
21 Corporate Drive
Clifton Park, NY 12065-8662
Phone: 518-881-4909

On Thu, Mar 10, 2016 at 9:32 AM, Mathieu Westphal <
mathieu.westphal at kitware.com> wrote:

> Afair, the vtkTransform usage in vtkAngularPeriodicFilter was only a
> fallback solution when vtkAngularPeriodicDataArray could not be used for
> some reason, it is not efficient and is (or at least should) generating a
> warning when used.
>
> No advice concerning the vtkTransform changes.
>
> Mathieu
>
>
> Mathieu Westphal
>
> On Thu, Mar 10, 2016 at 3:27 PM, Sujin Philip <sujin.philip at kitware.com>
> wrote:
>
>> Hi Developers,
>>
>> I am working on some changes to vtkAngularPeriodicFilter and I have
>> noticed that for some cases it uses vtkTransformFilter to generate the
>> result, instead of using mapped arrays (vtkAngularPeriodicDataArray).
>>
>> Going through the code, it looks like vtkTransformFilter behaves
>> differently than vtkAngularPeriodicFilter. Any field that has 3 or 9
>> components is transformed in vtkAngularPeriodicFilter but
>> vtkTransformFilter only transforms the normal
>> (vtkDataSetAttributes::GetNormals()) and vector
>> (vtkDataSetAttributes::GetVectors()) arrays.
>>
>> I am thinking of changing vtkTransformFilter to apply transformation on
>> all 3 and 9 components arrays. I wanted to know if there is any reason this
>> should not be done.
>>
>> Thanks
>> Sujin
>>
>>
>> _______________________________________________
>> Powered by www.kitware.com
>>
>> Visit other Kitware open-source projects at
>> http://www.kitware.com/opensource/opensource.html
>>
>> Search the list archives at: http://markmail.org/search/?q=vtk-developers
>>
>> Follow this link to subscribe/unsubscribe:
>> http://public.kitware.com/mailman/listinfo/vtk-developers
>>
>>
>>
>
> _______________________________________________
> Powered by www.kitware.com
>
> Visit other Kitware open-source projects at
> http://www.kitware.com/opensource/opensource.html
>
> Search the list archives at: http://markmail.org/search/?q=vtk-developers
>
> Follow this link to subscribe/unsubscribe:
> http://public.kitware.com/mailman/listinfo/vtk-developers
>
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://public.kitware.com/pipermail/vtk-developers/attachments/20160310/ef096413/attachment.html>


More information about the vtk-developers mailing list