title: How should I animate a Circle/Soap-Bubble in iOS (possibly with Swift)?
body: <p>I'm not an expert on animations and drawing, so I'm trying to validate the most efficient way to solve this problem. 
  I need to create a Soap Bubble-Like Circle view; it should look like a soap bubble that floats in the air, for now I'm just concerned on the shape and not the position on screen, which is assumed to be fixed. </p>
  
  <p>The end result should be a Circle that gets deformed at specific points along the circumference (as a soap bubble would look when it floats in the air).</p>
  
  <p>I've been thinking of these possible solutions:</p>
  
  <ul>
  <li>Explore the particle effects available in SpriteKit to find some ready-made effect.</li>
  <li>Use UIBezierPath to draw a deformed circle with some function and animate it. </li>
  </ul>
  
  <p>Since both of the things require some degree of deepening, I'd like to know which one in your opinion would be the best solution to do the job, some examples or tutorials would be greatly appreciated.</p>