title: How to detect/handle touch events on curved regions?
body: <p>I'm starting on a native iPad app (we can assume iOS 4.3+ if necessary) where I need to have a series of curved regions that bump up against each other.</p>
  
  <p><img src="https://i.stack.imgur.com/hch5b.jpg" alt="A series of curved regions stacked on top of each other"></p>
  
  <p>I'd love some advice about the best way to handle this.  </p>
  
  <p>One thought I had was to use a WebView and just have a JPG and an HTML image map but I'd really prefer to use some kind of native UI element that supports curves.</p>
  
  <p>Any recommendations?</p>