How to use CGAffineTransformMakeRotation?

Question

I want to draw text use Quartz 2D. The \"menu\" direction is wrong. I want \"M

Answer 1

[view setTransform:CGAffineTransformMakeRotation(M_PI / 2)];

Answer 2

CGAffineTransformMakeRotation expects angle in radians, not in degrees.

#define DEGREES_TO_RADIANS(x) (M_PI * (x) / 180.0)
...

CGAffineTransformMakeRotation(DEGREES_TO_RADIANS(45));