Hiding back images in iCarouselTypeRotary view for iCarousel

You should implement the delegate:

- (CGFloat)carousel:(iCarousel *)_carousel valueForOption:(iCarouselOption)option withDefault:(CGFloat)value{
 switch (option)
 {
    case iCarouselOptionVisibleItems:
    {
        return numberOfItemsIntheFront;
    }
 }
}

You'll need to change to a custom carousel type, and copy the implementation of iCarouselTypeRotary in your delegate. Then implement -carousel:itemAlphaForOffset: so that items around the back have an alpha of zero.

In the latest version of iCarousel, the easiest way to do this is to set view.layer.doubleSided = NO on your carousel item views, or to use the iCarouselOptionShowBackfaces property, like this:

- (CGFloat)carousel:(iCarousel *)_carousel valueForOption:(iCarouselOption)option withDefault:(CGFloat)value
{
    switch (option)
    {
        case iCarouselOptionShowBackfaces:
        {
            return NO;
        }
        default:
        {
            return value;
        }
    }
 }