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NaN values from presentationLayer

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NaN values from presentationLayer

Subject: NaN values from presentationLayer
From: DKJ <email@hidden>
Date: Mon, 24 Nov 2008 06:53:58 -0800

I have a UIView myView that I animate by changing its center property. During the animation, this line is called by an NSTimer every 0.1 seconds:

	CGRect myViewFrame = [[myView.layer presentationLayer] frame];

But sometimes this gives me all NaN values in the CGRect, and things go off the rails.

What might be causing this? Is it some kind of "between frames" condition in the animation?

dkj
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