[vtkusers] Replacing Points in polydata mesh

[Aashish Chaudhary]

>
> This isn't done very often in VTK since filters aren't allowed to modify
> their inputs.  That being said, you could do something like the following
> if you wanted to change the coordinate location of a point:
> vtkPoints* points = poly->GetPoints();
> points->SetPoint();
>

Make sure to mark points modified (after you change bunch of them) by
points->Modified();

HTH,
Aashish


> If you wanted to change your grid topology you'll have to get depper and
> modify the appropriate vtkCellArray of the polydata.
>
> Hope this helps,
> Andy
>
> On Thu, Apr 12, 2012 at 12:03 PM, Bayliss, Chris (Chicago) <
> cbayliss at gnresound.com> wrote:
>
>> Hello Users,****
>>
>> ** **
>>
>> I am looking for a way to replace points in vtkPolyData.  I already have
>> a polydata surface and I would like to drag the points on that surface to
>> new locations while maintaining the existing surface.  If I create a new
>> set of polydata points, I would have to reconstruct the surface, which I am
>> having trouble with.  Vtksurfacereconstruction filter does not produce a
>> representative surface and I cannot get vtkpowercrustsurfacereconstruction
>> filter to work.****
>>
>> ** **
>>
>> I can’t seem to figure out which functions in vtkPolyData would produce
>> the desired result.  Any advice would be greatly appreciated.  Any ideas on
>> how to get vtkpowercrustrsurfacereconstruction filter to work would also be
>> very helpful.****
>>
>> ** **
>>
>> Thanks,****
>>
>> ** **
>>
>> Chris****
>>
>> ** **
>>
>> ** **
>>
>> ** **
>>
>>
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-- 
| Aashish Chaudhary
| R&D Engineer
| Kitware Inc.
| www.kitware.com
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