[vtkusers] vtkUnstructuredGridToPolyDataFilter

[Amitesh Agarwal]

Hi all,

I am trying to convert an unstructured grid to polydata using
vtkUnstructuredGridToPolyDataFilter so that hole filling algorithm can be
used. I was trying to use it as follows
----------------------------------------------------------------
#!/usr/bin/env python
import vtk
from vtk.util.misc import vtkGetDataRoot

reader = vtk.vtkUnstructuredGridReader()
reader.SetFileName("/home/amitesh/testcase.vtk")

USG2Poly=vtk.vtkUnstructuredGridToPolyDataFilter()
USG2Poly.SetInput(reader.GetOutput())

meshhin = vtk.vtkPolyData()
meshhin.SetInput(USG2Poly.GetOutput())
meshhin.Update()
#Detect holes
boundaryEdges = vtk.vtkFeatureEdges()
boundaryEdges.SetInput(meshin)
boundaryEdges.SetBoundaryEdges(1)
boundaryEdges.SetFeatureEdges(0)
boundaryEdges.SetNonManifoldEdges(0)
boundaryEdges.SetManifoldEdges(0)
boundaryEdges.Update()
-----------------------------------------------------------------

I recieved an error using vtkpython interpretor which said

Traceback (most recent call last):
  File "/home/amitesh/holepatch.py", line 8, in ?
    USG2Poly=vtk.vtkUnstructuredGridToPolyDataFilter()
TypeError: this is an abstract class and cannot be instantiated

Can anyone tell me what is the error? I will really appreciate any
suggestion or solution in this regard.

Thanks
Amitesh
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