UIInterpolatingMotionEffect vertically and horizontally for a view (iOS 7 and later)

applyMotionEffects:forMotionEffectExtent

+ (void) applyMotionEffects:(UIView *)view forMotionEffectExtent:(float)motionEffectExtentOffset
{
    if (floor(NSFoundationVersionNumber) <= NSFoundationVersionNumber_iOS_6_1) {
        return;
    }
    UIInterpolatingMotionEffect *horizontalEffect = [[UIInterpolatingMotionEffect alloc] initWithKeyPath:@"center.x"
                                                                                                    type:UIInterpolatingMotionEffectTypeTiltAlongHorizontalAxis];
    horizontalEffect.minimumRelativeValue = @(-motionEffectExtentOffset);
    horizontalEffect.maximumRelativeValue = @( motionEffectExtentOffset);
    UIInterpolatingMotionEffect *verticalEffect = [[UIInterpolatingMotionEffect alloc] initWithKeyPath:@"center.y"
                                                                                                  type:UIInterpolatingMotionEffectTypeTiltAlongVerticalAxis];
    verticalEffect.minimumRelativeValue = @(-motionEffectExtentOffset);
    verticalEffect.maximumRelativeValue = @( motionEffectExtentOffset);
    UIMotionEffectGroup *motionEffectGroup = [[UIMotionEffectGroup alloc] init];
    motionEffectGroup.motionEffects = @[horizontalEffect, verticalEffect];
    [view addMotionEffect:motionEffectGroup];
    
    [horizontalEffect release];
    [verticalEffect release];
}