title: How to get the position of the point in the view after rotate?
body: <p>I have a <code>View</code> that has the moving, rotating and scaling capability, I have all the four-corner positions and I want to get the position of some imaginary points in it so that can be constant with scaling and moving
  Please take a look at the picture below to understand it well.</p>
  
  <p><a href="https://i.stack.imgur.com/db77w.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/db77w.png" alt="enter image description here"></a></p>