Question

I want to rotate image (left and right rotation) with angle 90.I am using following code it rotate left with angle 360.how can i rotate my image with angle 90.

-(IBAction)btnLeftRotateClicked:(id)sender
{


    CATransform3D rotationTransform = CATransform3DMakeRotation(1.0f * M_PI, 0, 0, 1.0);

    CABasicAnimation* rotationAnimation;
    rotationAnimation = [CABasicAnimation animationWithKeyPath:@"transform"];

    rotationAnimation.toValue = [NSValue valueWithCATransform3D:rotationTransform];
    rotationAnimation.duration = 0.25f;
    rotationAnimation.cumulative = YES;
    rotationAnimation.repeatCount = 1; 

    [imageAdjustView.layer addAnimation:rotationAnimation forKey:@"rotationAnimation"];

}

Thanks.

Answer 1

Why don’t you use the affineTransform if you just want to rotate the image in 2D

CGAffineTransformMakeRotation(-M_PI * 0.5);