Re: Core Animation - Animation Sequence
Re: Core Animation - Animation Sequence
- Subject: Re: Core Animation - Animation Sequence
- From: David Duncan <email@hidden>
- Date: Mon, 31 May 2010 14:35:43 -0700
On May 31, 2010, at 2:24 PM, Rodolfo Niborski wrote:
> My problem is that at the end of the first animation, the "Hello" message shows up in its initial position for a fraction of a second.
> I've tried to set the fillMode of the first animation to kCAFillModeForwards with no effect.
What you want to do instead is set the transform of the layer rather than trying to modify the animation to stick around. The code would be something like this:
CABasicAnimation *rotation = [CABasicAnimation animationWithKeyPath:@"transform"];
rotation.valueFunction = [CAValueFunction functionWithName: kCAValueFunctionRotateZ];
// setup the rest of the animation as you did previously
layer.transform = CATransform3DMakeRotation(M_PI, 0, 0, 1);
[layer addAnimation:rotation forKey:@"transform"];
What this does is it creates a basic animation that does the rotation, and then overrides the implicit animation that is created when you assign the transform to the layer. In this example I use the CAValueFunction rather than the extended keypath as this is more efficient and much more predictable, but doing so requires 10.6.
--
David Duncan
Apple DTS Animation and Printing
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