Modeling question with jython

[Libaoy]

Hello Hackers,

I am newer to Ptolemy and Jython. My question is how to locate actor in 
GraphPane. Following is my Jython code that runs OK. But all actor are
located in topleft of GraphPane.  I can drag and move them. But I want know 
how to use jython code to move them ? 

Thanks,

###################################################

from java.awt import BorderLayout
from java.awt import Dimension
from javax.swing import JFrame

from ptolemy.vergil.actor import ActorGraphModel
from ptolemy.vergil.actor import ActorViewerGraphController
from diva.graph import GraphPane
from diva.graph import JGraph

from ptolemy.kernel.util import Workspace
from ptolemy.actor import TypedCompositeActor
from ptolemy.actor import Manager
from ptolemy.actor.gui import CompositeActorApplication
from ptolemy.domains.de.kernel import DEDirector
from ptolemy.actor.lib.gui import TimedPlotter
from ptolemy.actor.lib import Clock

if __name__ == '__main__':
        workSpc = Workspace()
        topLevelActor =TypedCompositeActor(workSpc)
        topLevelActor.setName("universe")
        manager = Manager(workSpc, "manager")   
        director = DEDirector(topLevelActor, "director")
        topLevelActor.setDirector(director)     
        director.stopTime.setExpression("10.0")
        topLevelActor.setManager(manager)
        clock = Clock(topLevelActor,"clock")
        plotter = TimedPlotter(topLevelActor,"plotter")
        iinput = plotter.getPort("input")
        topLevelActor.connect(clock.output, iinput)
        controller = ActorViewerGraphController()
        model = ActorGraphModel(topLevelActor)
        pane = GraphPane(controller,model)
        modelViewer = JGraph(pane)
        size = Dimension(400,300)
        modelViewer.setMinimumSize(size)
        modelViewer.setPreferredSize(size)
        frame = JFrame()
        frame.setSize(600,400)
        frame.getContentPane().add(modelViewer,BorderLayout.CENTER)
        frame.setVisible(1)
        application = CompositeActorApplication()
        application.startRun(topLevelActor)
        application.waitForFinish()
#################################################


----------------------------------------------------------------------------
Posted to the ptolemy-hackers mailing list.  Please send administrative
mail for this list to: [EMAIL PROTECTED]