title: "Masking" an animation? iPhone SDK
body: <p>I have been looking into ways of masking images on the iPhone. I came across this solution </p>
  
  <p><a href="http://iosdevelopertips.com/cocoa/how-to-mask-an-image.html" rel="nofollow noreferrer">http://iosdevelopertips.com/cocoa/how-to-mask-an-image.html</a></p>
  
  <p>which works great for still images. What I want to do is mask an animation in a UIImageView. From what I have read I don't think this is possible whilst also achieving a decent frame rate.</p>
  
  <p>This leads me to ask whether the following is possible, could I "clip" the images inside the UIImageView? ie not re-size the UIImageView to the size of the images so some parts are chopped off?</p>