#NEWLINE# def _update_limits( self ) : #NEWLINE# #INDENT# if is_old_pipeline ( ) : #NEWLINE# #INDENT# extents = self . filter . input . whole_extent #NEWLINE# #UNINDENT# else : #NEWLINE# #INDENT# extents = self . filter . get_update_extent ( ) #NEWLINE# #UNINDENT# ( self . _x_low , self . _x_high ) = extents [ : 2 ] #NEWLINE# ( self . _y_low , self . _y_high ) = extents [ 2 : 4 ] #NEWLINE# ( self . _z_low , self . _z_high ) = extents [ 4 : ] #NEWLINE# self . _x_s_high = max ( 1 , self . _x_high ) #NEWLINE# self . _y_s_high = max ( 1 , self . _y_high ) #NEWLINE# self . _z_s_high = max ( 1 , self . _z_high )