def extract_geometry(self):
        """Combines the geomertry of all blocks into a single ``PolyData``
        object. Place this filter at the end of a pipeline before a polydata
        consumer such as a polydata mapper to extract geometry from all blocks
        and append them to one polydata object.
        """
        gf = vtk.vtkCompositeDataGeometryFilter()
        gf.SetInputData(self)
        gf.Update()
        return wrap(gf.GetOutputDataObject(0))
def extract_geometry ( self ) : gf = vtk . vtkCompositeDataGeometryFilter ( ) gf . SetInputData ( self ) gf . Update ( ) return wrap ( gf . GetOutputDataObject ( 0 ) )
Combines the geomertry of all blocks into a single ``PolyData``
        object. Place this filter at the end of a pipeline before a polydata
        consumer such as a polydata mapper to extract geometry from all blocks
        and append them to one polydata object.