[farshizzo]

You can use the vizact.ontimer function to update the stop watch time. I created a simple wrapper class around this for starting/stopping the watch. Here is the sample script:

import viz
viz.go()

class StopWatch(object):
	def __init__(self):
		self.time = 0.0
		
		self._timer = vizact.ontimer(0,self._updateTime)
		self._timer.setEnabled(False)
		
	def _updateTime(self):
		self.time += viz.elapsed()
		
	def start(self):
		self._timer.setEnabled(True)
		
	def stop(self):
		self._timer.setEnabled(False)
		
	def toggle(self):
		self._timer.setEnabled(viz.TOGGLE)
		
#Create stop watch object
watch = StopWatch()

#Spacebar toggles stop watch
vizact.onkeydown(' ',watch.toggle)

#Create text object to display watch time
text = viz.addText('',parent=viz.ORTHO,fontSize=40)

#Setup timer to update text object with watch time every frame
def DisplayTime():
	text.message('%.2f'%(watch.time))
vizact.ontimer(0,DisplayTime)