    tessellate = vtkTessellatorFilter()
    tessellate.SetInputConnection(shrink.GetOutputPort())
    tessellate.SetMaximumNumberOfSubdivisions(3)

    # Create a lookup table to map cell data to colors.
    lut = vtkLookupTable()
--
    tessellate = vtkTessellatorFilter()
    tessellate.SetInputData(uGrid)
    tessellate.SetChordError(0.035)
    tessellate.Update()

    cellMap = dict()
--
    tessellate = vtkTessellatorFilter()
    tessellate.SetInputData(uGrid)
    tessellate.SetMaximumNumberOfSubdivisions(2)

    mapper = vtkDataSetMapper()
    mapper.SetInputConnection(tessellate.GetOutputPort())
--
    tessellate = vtkTessellatorFilter()
    tessellate.SetInputData(uGrid)
    tessellate.SetChordError(.035)
    tessellate.Update()

    cellMap = dict()
--
    tessellate = vtkTessellatorFilter()
    tessellate.SetInputData(uGrid)

    mapper = vtkDataSetMapper()
    mapper.SetInputConnection(tessellate.GetOutputPort())
    mapper.ScalarVisibilityOff()
