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					Originally Posted by  farshizzo
					 
				 
				I would recommend adding the arrow to the viz.ORTHO layer, instead of viz.SCREEN. The SCREEN layer works in normalized (0-1) units, which is what causes the aspect ratio distortions. The ORTHO layer works in pixel units, which preserves the objects aspect ratio. 
			
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 Thanks for your prompt reply. It works. I only need to resize everything proportional to the size of the window, which should be fine. 
Cheers