[vtkusers] Assign new position to point in vtkUnstructuredGrid

[Dominik Szczerba]

I do it like this (with polydata, but unstructured should be same or similar)

  for(int i = 0; i<polydata->GetNumberOfPoints(); i++){
 double* p = (double*)(polydata->GetPoints()->GetData())->GetVoidPointer(3*i);
	 p[0] += dt*vel[i].x;
	 p[1] += dt*vel[i].y;
	 p[2] += dt*vel[i].z;
}

  polydata->Modified();


you will note that without Modified() things are not updated.

Dominik

On Monday 20 October 2008 04:03:50 pm Dirk Fressmann wrote:
> Hi
>
> for being able to drag a node from an unstructured grid I have to assign
> new coordinates to this point within the callback function of the mouse
> events. Is there a way to do this, such that the geometry of the
> unstructured grid is being updated as well?
>
> If you have any ideas, please help! I'm getting desperate!
>
> Dirk
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-- 
Dominik Szczerba, Ph.D.
Computational Physics Group
Foundation for Research on Information Technologies in Society
http://www.itis.ethz.ch
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