ios – The right way to middle a piece with utilizing UICollectionViewCompositionalLayout?

I need to change part merchandise peak and middle it. However once I attempting to alter peak I am unable to change Y place in my part. I need to do that:

picture

However I’ve this outcome:

picture

code:

func carouselSection(utilizing part: Part) -> NSCollectionLayoutSection {
        
     ///` "Merchandise":
        
     let itemSize = NSCollectionLayoutSize(widthDimension: .fractionalHeight(1.0), heightDimension: .fractionalHeight(1.0))
     let layoutItem = NSCollectionLayoutItem(layoutSize: itemSize)
     layoutItem.contentInsets = NSDirectionalEdgeInsets(high: 10, main: 10, backside: 10, trailing: 10)
        
     ///` "Group":

     let layoutGroupSize = NSCollectionLayoutSize(widthDimension: .fractionalHeight(1.0), heightDimension: .fractionalHeight(1.0))
     let layoutGroup = NSCollectionLayoutGroup.horizontal(layoutSize: layoutGroupSize, subitems: [layoutItem])

     ///` "Part":
        
     let layoutSection = NSCollectionLayoutSection(group: layoutGroup)
     layoutSection.orthogonalScrollingBehavior = .groupPagingCentered
        
     layoutSection.visibleItemsInvalidationHandler = { (gadgets, offset, surroundings) in
        gadgets.forEach { merchandise in
            let body = merchandise.body
             let rect = CGRect(x: offset.x, y: offset.y, width: surroundings.container.contentSize.width, peak: body.peak)
             let inter = rect.intersection(body)
             let p.c: CGFloat = inter.width / body.width
             let scale = 0.8 + (0.2 * p.c)
             merchandise.rework = CGAffineTransform(scaleX: 0.98, y: scale)
        }
    }
        
    return layoutSection
}