title: How to determine intersection of CGPaths
body: <p>My Question is something similar to <a href="https://stackoverflow.com/questions/1314713/check-if-drawn-path-cgpath-intersects-itself-in-an-iphone-game">this</a>.</p>
  
  <p>I have 2 CGPathRef and 1 will be moved by finger touch. I want to find that whether the 2 CGPathRef are intersected? That question was asked almost 2 years ago and I want to know whether something has been found in the mean time.</p>