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Re: CGLayer questions

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Re: CGLayer questions

Subject: Re: CGLayer questions
From: Jean-Daniel Dupas <email@hidden>
Date: Wed, 24 Sep 2008 09:27:27 +0200


Le 24 sept. 08 à 06:04, Alex Reynolds a écrit :

Is it possible to take a CGLayer and turn it into a bitmap representation?


Create a CGBitmapContext and draw you layer into it.

Also, is it possible to grab a CGRect "subset" of a CGLayer and append that to a new CGLayer, so that it isn't necessary to recalculate the entirety of a new CGLayer?


CGContextRef ctxt = CGLayerGetContext(mySecondLayer);
CGContextClipToRect(ctxt, …)
CGContextDrawLayerInRect(ctxt, myFirstLayer, …);

Thanks,
Alex

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References:  
  >CGLayer questions (From: Alex Reynolds <email@hidden>)




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