title: How do I detect a touch on a UIBezierPath and move a ball along that?
body: <p>How do I move a ball along a specific UiBezierPath?  Is that possible?</p>
  
  <p>I've tried everything including doing a hit test using</p>
  
  <pre><code>-(BOOL)containsPoint:(CGPoint)point onPath:(UIBezierPath*)path inFillArea:(BOOL)inFill
  </code></pre>
  
  <p>How do I detect a touch along a path?  </p>