How to get center index in collectionView?

[reza-khalafi]

Hi.
I want to get center index in this collection view at default mode or after scroll.
How to get it?

[mouness2020]

 func scrollViewDidScroll(_ scrollView: UIScrollView) {

            let centerPoint = CGPoint(x: collectionView.bounds.midX , y: collectionView.bounds.midY)

            if let indexPath = collectionView.indexPathForItem(at: centerPoint) {
//bla bla
            }
    }