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QCCompositionLayer for Manipulating other CALayers
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QCCompositionLayer for Manipulating other CALayers


  • Subject: QCCompositionLayer for Manipulating other CALayers
  • From: Mike Rossetti <email@hidden>
  • Date: Thu, 17 Jul 2008 20:50:47 -0600

Before I spend a lot of time attempting the following I would appreciate any advice based on your experience:

I've got a drawing-like application where I'd like the user to be able to rotate individual elements of the drawing. When the mouse is hovering over an element I draw a manipulation image (a CALayer) and what I'd like to do is to let the user mouse click in a little rotator control nubby and drag to rotate.

I'm considering using a QCCompositionLayer and pulling in a nice Quartz Composition I put together that behaves (at least in Quartz Composer) as I'd like.

Is this a foolish or a wise direction to take?

Thanks,
Mike

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