Redraw layer during animation
Redraw layer during animation
- Subject: Redraw layer during animation
- From: Dave Keck <email@hidden>
- Date: Mon, 21 Sep 2009 18:57:39 -0400
Hey list,
I have a layer that draws its content based on its bounds size, and
I'm animating this layer's size using a CABasicAnimation. I've set the
layer's needsDisplayOnBoundsChange = YES.
During the course of the scaling animation, though, the layer is not
redrawn. Instead, its cached content (before the animation began) is
scaled, which doesn't look great. As best as I can tell, there's no
way to force a layer to be redrawn during an animation. (Performance
isn't an issue in this case - just a few shapes.)
I've started looking into implementing a custom CIFilter - which
apparently are redrawn during animations and such - but this solution
is looking ugly. Alternatively, I could set up a timer and animate the
layer's size manually, but I'm hoping for a better solution.
Any thoughts?
Thanks!
David
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