    # parametricObject = vtk.vtkParametricSuperToroid()
    # parametricObject = vtk.vtkParametricTorus()

    parametricFunctionSource = vtk.vtkParametricFunctionSource()
    parametricFunctionSource.SetParametricFunction(parametricObject)
    parametricFunctionSource.Update()
--
    pfn['SuperToroid'] = vtkParametricSuperToroid()
    pfn['Torus'] = vtkParametricTorus()
    pfn['Spline'] = vtkParametricSpline()
    # Extra parametric surfaces.
    pfn['BohemianDome'] = vtkParametricBohemianDome()
    pfn['Bour'] = vtkParametricBour()
--
    surface = vtkParametricSuperToroid()
    source = vtkParametricFunctionSource()

    renderer = vtkRenderer()
    mapper = vtkPolyDataMapper()
    actor = vtkActor()
