rotate a UIView

UIView_rotate_method

- (void)rotateView:(UIView*)view ToAngle:(CGFloat)angle animated:(BOOL)animated
{
    NSParameterAssert(angle <= 360 && angle >= 0);
    
    CGFloat radians = atan2f(view.transform.b, view.transform.a);
    CGFloat degrees = radians * (180 / M_PI);
    
    if ( fabs( degrees - angle ) < FLT_MIN) {
        return;
    }
    
    CGFloat rotateRadians = angle * M_PI / 180;
    
    animated = NO;
    
    if (animated) {
        [UIView animateWithDuration:0.3 animations:^{
            view.transform = CGAffineTransformRotate(view.transform, rotateRadians);
            
        }];

    } else {
        view.transform = CGAffineTransformRotate(view.transform, rotateRadians);

    }
    
}