title: ios radar screen for an app using swift
body: <p>I need to show a radar screen on a map in a ios app using swift. The radar view is on top of a map view which has some markers. The dial just goes round and round.</p>
  
  <p>(The next requirement is to highlight/blink the markers that occurred in the map x seconds back once the dial touches it )</p>
  
  <p>Any ideas on how I can do this ?</p>
  
  <p>Thanks</p>