VTK2OBJ

#!/usr/bin/python 

# vtk2stl.py  

from vtk import *  

fname1 = 'test.vtk' 

fname2 = 'test.stl'  

reader = vtkUnstructuredGridReader() 

reader.SetFileName(fname1) 

reader.Update()  

geomFilter = vtkGeometryFilter() 

geomFilter.SetInputConnection(reader.GetOutputPort()) 

geomFilter.Update()  

writer = vtkSTLWriter() 

writer.SetInputConnection(geomFilter.GetOutputPort()) 

writer.SetFileName(fname2) 

writer.Write()