title: How to ignore pan gestures on transparent parts of UIImageViews?
body: <p>I want to use a pan gesture on visible UIImageViews's UIImage But this functionality is not implementing in objective c.</p>
  
  <p>I have a UIImageView with P - Shaped and i have a UIView as it is sub view of p-shaped imageview. Now i want to move this view over the p-shaped imageview (It should not move outside the p-shaped).</p>
  
  <p>Can anyone will help to achieve this functionality in objective c.</p>