setContentOffset之后快速继续滚动视图的减速

Question

我有一个滚动视图，其中三个屏幕填充图像彼此相邻。 为了给人一种圆形滚动的错觉，我实现了这一点：

class BoardContainerViewController: UIViewController, UIScrollViewDelegate {

    @IBOutlet weak var board1: UIView!
    @IBOutlet weak var board2: UIView!
    @IBOutlet weak var board3: UIView!

    @IBOutlet weak var scrollView: UIScrollView!


    override func viewDidLoad() {
        super.viewDidLoad()
        scrollView.contentSize = CGSize(width: UIScreen.main.bounds.width*3, height: UIScreen.main.bounds.height)
        scrollView.setContentOffset(CGPoint(x: UIScreen.main.bounds.width, y: 0), animated: false)
        scrollView.delegate = self

        // Do any additional setup after loading the view.
    }

    func scrollViewDidScroll(_ scrollView: UIScrollView) {

        if(scrollView.contentOffset.x  < UIScreen.main.bounds.width / 2) {
            scrollView.setContentOffset(CGPoint(x: scrollView.contentOffset.x + UIScreen.main.bounds.width, y: 0), animated: false)
        }
        if(scrollView.contentOffset.x  > UIScreen.main.bounds.width * 1.5) {
            scrollView.setContentOffset(CGPoint(x: scrollView.contentOffset.x - UIScreen.main.bounds.width, y: 0), animated: false)
        }
    }


    func scrollViewWillBeginDecelerating(_ scrollView: UIScrollView) {
        scrollView.setContentOffset(scrollView.contentOffset,animated: false)
    }

}

它工作正常，但是当它在减速期间被触发时，减速将中止。我能以某种方式恢复它吗？