import UIKit
import PageControl
class ViewController: UIViewController, UIScrollViewDelegate {
    
    @IBOutlet weak var scrollView: UIScrollView!
    @IBOutlet weak var pageControl: PageControl!
    override func viewDidLoad() {
        super.viewDidLoad()
        scrollView.delegate = self
        pageControl.numberOfPages = Int(scrollView.contentSize.width / scrollView.bounds.width)
    }
    func scrollViewDidEndDecelerating(_ scrollView: UIScrollView) {
        let page = scrollView.contentOffset.x / scrollView.bounds.width
        pageControl.currentPage = page
    }
}

let pageControl = PageControl()
addSubview(pageControl)

pageControl.numberOfPages = 5
pageControl.spacing = 14.0
pageControl.indicatorDiameter = 8.0
pageControl.currentIndicatorDiameter = 12.0
pageControl.indicatorTintColor = .darkGray
pageControl.currentIndicatorTintColor = .green

pageControl.currentPage = 1