title: Revealing a UIImage with a radial animation
body: <p>I have a UIImageView that i want to slowly reveal in a radial clockwise fashion.</p>
  
  <p>Here is an example of how i want to reveal the image over the course of 1 second.  Im basically trying to simulate a marker drawing a circle around something.</p>
  
  <p><img src="https://i.stack.imgur.com/Sx6py.png" alt="Radial Image Example"></p>