title: Get just the scaling transformation out of CGAffineTransform
body: <p>I found a similar question about getting just the rotation, but as I understand scaling and rotating work different in the transform matrix.</p>
  
  <p>Matrixes are not my strength, so if anybody would hint me how to get <strong>only the scaling</strong> out of a CGAffineTransform I'd greatly appreciate.</p>
  
  <p>btw. I tried applying the CGAffineTransform on a CGSize and then get the height x width to see how much it scaled, but height x width have strange values (depending on the rotation found in the CGAffineTransform, so ... hm that does not work)</p>