iOS SDK CGAffineTransform Angle Question

Question

I need to get angle in radians. I have:

CGFloat angle = asin(myImage.transform.b);

This seems to be not working. I need to extract the angle of 'myImage' at any moment in time. How would I extract this?

Answer 1

CGFloat angle = atan2(card.transform.b, card.transform.a);

That does it.