Re: Group CGAffineTransform Animations?
Re: Group CGAffineTransform Animations?
- Subject: Re: Group CGAffineTransform Animations?
- From: Chunk 1978 <email@hidden>
- Date: Wed, 17 Jun 2009 05:21:41 -0400
thanks! :)
On Wed, Jun 17, 2009 at 5:05 AM, Jean-Daniel
Dupas<email@hidden> wrote:
>
> Le 17 juin 09 à 10:53, Chunk 1978 a écrit :
>
>> is have this animation block with both Enlarge and Rotate, but only
>> one work properly (the last one listed). what is the proper way to
>> group the two transforms together:
>>
>> -=-=-=-
>> //Animation Block
>> [UIView beginAnimations:nil context:NULL];
>> [UIView setAnimationDuration:1.0];
>> [UIView setAnimationDelegate:self];
>> [UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];
>>
>> CGAffineTransform enlarge = CGAffineTransformMakeScale(1.5, 1.5);
>> CGAffineTransform rotate = CGAffineTransformMakeRotation(3.14 / 2);
>>
>> square.transform = enlarge;
>> square.transform = rotate;
>>
>> [UIView commitAnimations];
>> -=-=-=-
>
>
> You should concat your transformations, not make two.
>
> CGAffineTransform trans = CGAffineTransformMakeScale(1.5, 1.5);
> trans = CGAffineTransformRotate(trans, 3.14 / 2);
>
> or in your sample above:
> square.transform = CGAffineTransformConcat(enlarge, rotate);
>
>
_______________________________________________
Cocoa-dev mailing list (email@hidden)
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:
This email sent to email@hidden