One thing I noticed is that you're using the transform from wrapperView, which 
may not exclusively have your modifications applied. Have you tried caching the 
resultant scale, translation and rotation values from any gestures and then 
using those values to create a new transform from scratch?

Secondly, does cardFrame have a relationship to wrapperView.frame that makes 
sense?


On Dec 2, 2010, at 8:22 AM, Allyn Bauer wrote:

> I am creating an iPad application for my employer targeted to 3.2 and above. 
> In it, the user has the ability to move, rotate and resize an image which 
> then gets sent to our server. The image is displayed with a UIImageView which 
> is wrapped with a UIView. This outer UIView is the one which has the 
> appropriate gesture responders attached and also is the one that gets 
> resized/moved/rotated. The image view inside it simply expands to fill the 
> whole outer frame. In this way, the original image is not modified until 
> after all the resizing/rotation/actions have taken place. At that point I 
> then attempt to apply the changes to it and send it to our server.
> 
> I have tried to get this working, but I'm afraid I haven't been able to. Here 
> is the code I have so far:
> http://pastie.org/1341720
> 
> It doesn't manage to get the correct crop of the rotated image. Occasionally 
> (often) it won't have any of the image at all. I suspect that the issue is 
> the result of a fundamental misunderstanding of something on my part, but I 
> can't figure out what that would be. Any help with the code or advice on the 
> problem would be absolutely fantastic.

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