Thanks Matt! I have already found another solution that worked pretty well: Instead of using the repeatCount property, I set a delegate on the animation and add another animation manually each time the previous one ends (animationDidEnd: finished:). In this way I can fully control the fromValue and toValues of each loop of the animation.
On Fri, Nov 26, 2010 at 6:51 PM, Matt Neuburg <m...@tidbits.com> wrote: > 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
