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Please do not post the same thing multiple times. The board software automatically flags certain posts as needing moderator attention. This happens the most often for new users. I'm pretty sure this is made clear at the time you attempt to post. Posting the same thing over and over again just makes that many more posts the moderators have to weed through later. This makes us sad. Don't make us sad. If your post/thread doesn't appear, just wait a while. Don't post it again. If it hasn't shown up by the next day, then you can try again. I normally go through posts in the mornings, and try to check a few times throughout the day, but I'm not here 24/7. There will typically be a significant delay before posts are approved. Just be patient.

Multiple CGAffineTransforms in Animations

superusersuperuser Posts: 27Registered Users
FYI

I've been trying to make a "Ken Burns" effect with image transforms and learned how to make more than two transformations on an image simultaneously.

You can to two transforms with the built in CGAffineTransformConcat function but doing three or more requires that you nest them like so:


[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:30];
[UIView setAnimationCurve:UIViewAnimationCurveEaseIn];
CGAffineTransform rotate = CGAffineTransformMakeRotation(0.95);
CGAffineTransform moveRight = CGAffineTransformMakeTranslation(100, 200);
CGAffineTransform combo1 = CGAffineTransformConcat(rotate, moveRight);
CGAffineTransform zoomIn = CGAffineTransformMakeScale(5.8, 5.8);
CGAffineTransform transform = CGAffineTransformConcat(zoomIn, combo1);
yourView.transform = transform;
[UIView commitAnimations];


Be careful what order you put the final transform statement as if you put zoomIn last it won't take effect.

Thanks to everyone here who's been great in helping out us X-Code newcomers.
Post edited by superuser on

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