Rotating and Moving a UIImageView (CocoaTouch)

Question

This code works to rotate:

  CGAffineTransform transform = CGAffineTransformMakeRotation(radians(lastAngle++)); 
  anImage.transform = transform;  

and this code works to move my UIImageView

  CGRect frame = [anImage frame];
  frame.origin.x+=1;
  frame.origin.y+=1;
  [anImage setFrame:frame];

but when I combine them, the image stretches out increasingly on each run through. Perhaps the frame should not be modified like this?

Answer 1

From the doc of .frame:

Warning: If the transform property is not the identity transform, the value of this property is undefined and therefore should be ignored.

---

The .transform property can be used for translation too, see CGAffineTransformMakeTranslation or CGAffineTransformTranslate.

Answer 2

Change the "center" property instead.