How to rotate the circle icons to keep them upright while the circle moves?

[jaag12]

I would like to know how I can keep the icons inside the circle in an upright position, whether the circle moves and changes position, as in the initial position. A great job with the library, Thank you!

[jaag12]

I tried the following in the touchesMoved function of CircleGestureRecognizer, as indicated on the page but turn the full thumb and not the icon, I tried turning the icon only, but it did not work properly. Thank you.

  for thumb in view.thumbs {
         let thumb = thumb as! CircleThumb
         let deltaAngle: CGFloat = -CircleThumb.radiansFrom(degrees: 180) + atan2(view.transform.a, 
         view.transform.b) + atan2(thumb.iconView.transform.a, thumb.iconView.transform.b)

         let current = thumb.transform.iconView
         thumb.iconView..transform = current.rotated(by: deltaAngle)
   }