Ken Burns effect on image view

gistfile1.txt

- (void)animateBackground {
    
    NSInteger randInt = arc4random()%3;
    
    NSInteger translationX = 0;
    NSInteger translationY = 0;
    NSInteger scaleX = 0;
    NSInteger scaleY = 0;
    
    switch (randInt) {
        case 0:
            translationX = 90;
            translationY = -100;
            scaleX = 2.5;
            scaleY = 2.5;
            break;
            
        case 1:
            translationX = 20;
            translationY = -70;
            scaleX = 2.7;
            scaleY = 2.7;
            break;
            
        case 2:
            translationX = 40;
            translationY = -50;
            scaleX = 2.0;
            scaleY = 2.0;
            break;
            
        default:
            break;
    }
        
    // re-animate image background
    [UIView animateWithDuration:50.0f
                          delay:0.0f
                        options:
     UIViewAnimationOptionCurveLinear |
     UIViewAnimationOptionAutoreverse |
     UIViewAnimationOptionRepeat
                     animations:^{
                         [UIView setAnimationRepeatCount:10];
                         CGAffineTransform moveRight = CGAffineTransformMakeTranslation(translationX, translationY);
                         CGAffineTransform zoomIn = CGAffineTransformMakeScale(scaleX, scaleY);
                         CGAffineTransform transform = CGAffineTransformConcat(zoomIn, moveRight);
                         self.backgroundImageView.transform = transform;
                     } completion:nil];
}