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25 Jun 2008, 13:56
Clint Shryock (6 posts)

on page 47 of the pdf, section 4.2 discusses grouping animations in @NSAnimationContext@.

[NSAnimationContext beginGrouping]; 
[[NSAnimationContext currentContext] setDuration:2.0f]; 
// your code here 
[NSAnimationContext endGrouping]; 

...*_Any_* animation between the beginGrouping and endGrouping calls will 
animate for the duration specified.

i went back to section 3.1 Keyframe Animations and opened up the example and tried it out, and i found that since we explicitly set the duration for this animation to be 2.0f (page 28 of the pdf, @originAnimation@ method) that grouping in @NSAnimationContext@ with a different duration specified had no effect. only after i commented out the line where the duration is set did the group context duration have any effect.

i know it’s nit picky but i just happened to try this out on that example and had this happen, or not happen i guess.

of course i see now that this is all explained 2 paragraphs later…

25 Jun 2008, 17:02
Bill Dudney (917 posts)

Hey Clint,

Thanks for the comment!

I think if I were to special case it in this para that it could be info overload. What do you think?


25 Jun 2008, 21:40
Clint Shryock (6 posts)

i should have just kept reading before i shot from the hip and posted, it’s stated at lest 2x in the following paragraphs. i’ll be less haste-full in the future

every thing’s great so far, thanks for the hard work.

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