[vtkusers] vtkPolyDataWriter in vtkpython

[David E DeMarle]

congrats!

In the first program, did you forget to change the writer's input from
the cone to the output of the transform filter? VTK filter's never
modify their inputs directly.

I think in the second program that the append filter is superfluous,
unless you want both original and transformed data together for your
work.

David E DeMarle
Kitware, Inc.
R&D Engineer
28 Corporate Drive
Clifton Park, NY 12065-8662
Phone: 518-371-3971 x109



On Wed, May 13, 2009 at 8:20 PM, Olumide <50295 at web.de> wrote:
> Olumide wrote:
>>>
>>> Apply a vtkTransform filter.
>>
>> Thanks. I have (see my attempt below -- the transform has no noticeable
>> effect). I do not wish to visualize the data. Rather, my intention is to
>> have the script write a VTK file.
>
> Got it. Here's how I did it, please correct any superfluous steps:
>
> #!/usr/bin/env python
>
> import vtk
>
> cone = vtk.vtkConeSource()
> cone.SetHeight( 3.0 )
> cone.SetRadius( 1.0 )
> cone.SetResolution( 10 )
>
> transform = vtk.vtkTransform()
> transform.Translate(8, 8, 8)
> transform.Scale(1, 2, 5)
> transform.RotateY(45)
> tpd1 = vtk.vtkTransformPolyDataFilter()
> tpd1.SetInputConnection(cone.GetOutputPort())
> tpd1.SetTransform(transform)
>
> appendF = vtk.vtkAppendPolyData()
> appendF.AddInput(tpd1.GetOutput())
> appendF.AddInput(cone.GetOutput())
>
> #Write in file
> w = vtk.vtkPolyDataWriter()
> #w.SetInput(tpd1.GetOutput())
> w.SetInput(appendF .GetOutput())
> w.SetFileName("junk.vtk")
> w.Write()
>
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