[vtkusers] How to get poits of the output polydata of a vtkcutter( has pieces instead of points)?

[Jothybasu Selvaraj]

Something like this should help you.

Please make an example in wiki if this works.

OutlineVertices=list()
    Bounds=Object.GetBounds()
    s1=np.round(Bounds[4])
    s2=np.round(Bounds[5])
    #print s1,s2,'s1,s2'
    #print Bounds,'Bounds'
    for x in np.arange(s1-2,s2+2,0.5):
        plane=vtk.vtkPlane()
        plane.SetOrigin(0,0,x)
        plane.SetNormal(0,0,1)

        cutter=vtk.vtkCutter()
        cutter.SetCutFunction(plane)
        cutter.SetInput(Object)
        cutter.Update()

        out=cutter.GetOutput()
        points=out.GetPoints()
        NumPts=points.GetNumberOfPoints()
        #print NumPts,'npts'
        OutlinePts=np.zeros([NumPts,3])
        for n in range(0,NumPts,1):
            OutlinePts[n,:]=np.round(points.GetPoint(n))
        OutlineVertices.append(OutlinePts)
    return OutlineVertices


Jothy

On Thu, Feb 16, 2012 at 4:15 AM, soheilghafurian
<soheilghafurian at yahoo.com>wrote:

> I used the vtkCutter to build a contour on my poly data. I want to access
> the
> points of the contour but the polydata I get from vtkCutter->GetOutput()
> doesn't have points and has one piece instead.
>
> It would be great if someone told me how I can convert this polydata to a
> polydata which has points like polydata normaly does.
>
> Thanks a lot
>
> --
> View this message in context:
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-- 
Jothy
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