On Thu, 24 Feb 2011 00:47:53 +0100, Federico Tessmann <federic...@gmail.com> said: >Hi there. >I have to rotate an image continuously and I'm using now CALayers as the >image containers and I'm rotating thous CALayers by setting its Transform >property. > >Now I have two approaches to keep rotating these layers. > >1) Use a displayLink of 30 fps. Use CATransaction, setting >setDisableActions:<http://developer.apple.com/library/mac/documentation/graphicsimaging/Reference/CATransaction_class/Introduction/Introduction.html#//apple_ref/occ/clm/CATransaction/setDisableActions:> > to YES and setting each time the new Transform property of that layer. >2) Compute where the layer would rotate to and use a CATransaction >triggering an animation of 0.5 secs of duration and letting CoreAnimation do >the intermediate steps for me. > >Which approach would give me better results and not consume too much CPU?
Your approach 2 sounds like the way Apple's Metronome example is implemented, so be sure to take a look at that. m. -- matt neuburg, phd = m...@tidbits.com, <http://www.apeth.net/matt/> A fool + a tool + an autorelease pool = cool! AppleScript: the Definitive Guide - Second Edition! http://www.apeth.net/matt/default.html#applescriptthings_______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
