core.py 文件源码

def start():
    assert Visualizer.INSTANCE is None
    if _import_error is not None:
        import sys
        print >> sys.stderr, "No visualization support (%s)." % (str(_import_error),)
        ns.core.Simulator.Run()
        return
    load_plugins()
    viz = Visualizer()
    for hook, args in initialization_hooks:
        gobject.idle_add(hook, viz, *args)
    ns.network.Packet.EnablePrinting()
    viz.start()