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#!/usr/bin/env python
import vtk
from vtk.test import Testing
from vtk.util.misc import vtkGetDataRoot
VTK_DATA_ROOT = vtkGetDataRoot()
# Debugging parameters
sze = 300
reader = vtk.vtkExodusIIReader()
reader.SetFileName(VTK_DATA_ROOT + "/Data/disk_out_ref.ex2")
reader.UpdateInformation()
reader.SetPointResultArrayStatus("CH4", 1)
reader.Update()
tree = vtk.vtkSpanSpace()
#contour = vtk.vtkSMPContourGrid()
contour = vtk.vtkContourGrid()
contour.SetInputConnection(reader.GetOutputPort())
contour.SetInputArrayToProcess(0, 0, 0, vtk.vtkAssignAttribute.POINT_DATA, "CH4")
contour.SetValue(0, 0.000718448)
#contour.MergePiecesOff()
contour.UseScalarTreeOn()
contour.SetScalarTree(tree)
contour.Update()
mapper = vtk.vtkCompositePolyDataMapper2()
mapper.SetInputConnection(contour.GetOutputPort())
mapper.ScalarVisibilityOff()
actor = vtk.vtkActor()
actor.SetMapper(mapper)
# Create graphics stuff
#
ren1 = vtk.vtkRenderer()
ren1.AddActor(actor)
ren1.ResetCamera()
renWin = vtk.vtkRenderWindow()
renWin.AddRenderer(ren1)
renWin.SetSize(sze, sze)
iren = vtk.vtkRenderWindowInteractor()
iren.SetRenderWindow(renWin)
renWin.Render()
#iren.Start()
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