title: UIimageview fit to round shape
body: <p>I have an <code>UIImageview</code> that contains a circle (The obstacle) and then another <code>UIImageview</code> that contains another image (my character). When my circle hits my character the game ends. </p>
  
  <p>My problem occurs when the game ends on the character touching the <code>UIImageview</code> box that my circle is within, rather than the circle inside the <code>UIImageview</code> box.</p>
  
  <p>The solutions I can think of are:</p>
  
  <ul>
  <li>Make the <code>UIImageview</code> rounded to fit my circle.</li>
  <li>Somehow detect a collision between my characters pixels and the circles pixels rather than the <code>UIImageviews</code>.</li>
  </ul>
  
  <p>Help and ideas would be really appreciated. I am a beginner with xcode.</p>
  
  <p>Thanks!</p>