On Thu, 25 Nov 2010 20:40:57 +0200, Oleg Krupnov <oleg.krup...@gmail.com> said: >Is there a way to change the duration of an already running >CAAnimation, in order to change its speed? > >The animation is added explicitly via [layer addAnimation: forKey:] > >When I try to get the animation with [layer animationForKey:] and call >[animation setDuration:], I get an exception that I'm trying to modify >a readonly animation. > >I know I could cancel the current animation and start a new one using >the current [layer presentationLayer]'s value as the fromValue, but >this is not convenient because my animation is repetitive and after >such a manipulation it will start from a wrong fromValue on the next >loop.
Nevertheless that's what you're probably going to have to do. The +timeOffset+ property may assist you here in starting the new animation "in the middle"; also, observe that +repeatCount+ is a float (it does not have to indicate an integral number of repetitions). 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
