Question

Objective-C for iOS.

How do I rotate an image or view TO a particular angle.
I have tried the two methods below, but both rotate the AMOUNT of angle, not TO the angle.
Basically I would like to call a method to rotate to 90′ and then say call again of 180′, and the image/view to finish at 180′, NOT an addition of them both (270′) which is what happens if I use either of the methods below.

#define degreesToRadians(degrees) (M_PI * degrees / 180.0)

myImage.transform = CGAffineTransformMakeRotation(degreesToRadians(90));

myImage.transform = CGAffineTransformRotate(myImage.transform, degreesToRadians(90));

Many thanks!

Answer 1

Reset by

.transform = CGAffineTransformIdentity

before the other transforms…