        light_kit = vtkLightKit()
        light_kit.AddLightsToRenderer(renderer)

        renderer.AddActor(text_actor)
        renderer.AddActor(actor)
        renderer.AddActor(label_actor)
--
        light_kit = vtkLightKit()
        light_kit.AddLightsToRenderer(renderer)

        renderer.AddActor(text_actor)
        renderer.AddActor(actor)
        renderer.AddActor(label_actor)
