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[farshizzo]

If you have vizard 2.5 you could do something similar to the following:

move = vizact.goto(0,0,5,1)
changeSize = vizact.scale_node(3,3,3)
ball.add(move)
ball.add(changeSize)

If you have an earlier version of vizard then you would have to use callbacks:

def ballStop(object,type):
	if type == viz.MOVE:
		ball.scale(3,3,3)

ball.callback(viz.STOP_EVENT,ballStop)

ball.goto(0,0,5,1)