Re: Pausing an animation

[Gabriel Zachmann via Cocoa-dev]

> Setting just the speed will often return you to the “beginning of time” for 
> your CAMediaTiming compliant object (CALayer and CAAnimation the most common 
> compliant objects).

I think, this is what must have happened in my case.
(It's just funny that it did not happen with one animation/layer, but with 
slightly different layers/animations it did happen.)

> 
> QA1673 has a proper implementation for doing this 
> 

That seems to work like a charm!
Thanks a million for the pointer.


Best regards, Gabriel




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Re: Pausing an animation

[David Duncan via Cocoa-dev]

> On Sep 17, 2019, at 1:19 PM, Gabriel Zachmann via Cocoa-dev 
>  wrote:
> 
> I have a layer with two animations.
> 
> I would like to pause this animation occasionally .
> To do so, I set layer.speed = 0.0;
> 
> In the past, this has worked (with slightly different animations).
> However, in this case, the layer seems to just disappear. 
> (the layer occupies the whole screen, and when I set speed-0, the screen is 
> black)
> 
> Does anyone have an idea what might be the reason why it doesn't work?
> Are there properties that do not work with speed = 0?

Setting just the speed will often return you to the “beginning of time” for 
your CAMediaTiming compliant object (CALayer and CAAnimation the most common 
compliant objects).

 = ( - beginTime) * speed + timeOffset

So if you want to pause a layer, you also need to set the timeOffset to a value 
that matches the current value of 

QA1673 has a proper implementation for doing this 
>

> 
> Thanks a lot in advance.
> Gabriel.
> 
> 
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Pausing an animation

[Gabriel Zachmann via Cocoa-dev]

I have a layer with two animations.

I would like to pause this animation occasionally .
To do so, I set layer.speed = 0.0;

In the past, this has worked (with slightly different animations).
However, in this case, the layer seems to just disappear. 
(the layer occupies the whole screen, and when I set speed-0, the screen is 
black)

Does anyone have an idea what might be the reason why it doesn't work?
Are there properties that do not work with speed = 0?

Thanks a lot in advance.
Gabriel.




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