[vtkusers] Moving points in an existing polydata object?

[Nigel Nunn]

Hi Wesley,

> Do I have to resort to using (and learning how to use!) a 
> vtkProgrammableFilter to move points without affecting their 
> Wesley connectivity? I'm looking for a way to do this while 
> the object is rendered, so changes once made will be visable 
> in the render window.
> 
> At present I think I'm doing it in a very inefficient manner 
> by getting a list of points and cells from the polydata and 
> creating a new polydata.
> 
> I'm using python 2.3 with VTK 4.2.2.

from C++, I would try:

  double v[3]={0.0};
  pPoints->GetPoint(i, v);
  v[0] = newx;
  v[1] = newy;
  v[2] = newz;
  pPoints->SetPoint(i, v);
  pPoints->Modified();

then Update() the pipline.

I guess python has similar?

Nigel

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