Custom UIPageControl for replacing the default circles with desired icons

CustomPageControl.swift

class CustomPageControl: UIPageControl {
   // active and inactive images
   let imgActive: UIImage = #imageLiteral(resourceName: "activeImage").withRenderingMode(.alwaysTemplate)
   let imgInactive: UIImage = #imageLiteral(resourceName: "inactiveImage")

   // adjust these parameters for specific case
   let customActiveYOffset: CGFloat = 5.0
   let customInactiveYOffset: CGFloat = 3.0 
   var hasCustomTintColor: Bool = false
   let customActiveDotColor: UIColor = UIColor(rgb: 0xe62f3e, alphaVal: 1.0)

   override var numberOfPages: Int {
       didSet {
           updateDots()
       }
   }

   override var currentPage: Int {
       didSet {
           updateDots()
       }
   }

   override func awakeFromNib() {
       super.awakeFromNib()
       self.pageIndicatorTintColor = .clear
       self.currentPageIndicatorTintColor = .clear
       self.clipsToBounds = false
   }

   func updateDots() {
      var i = 0
      let activeSize = self.imgActive.size
      let inactiveSize = self.imgInactive.size
      let activeRect = CGRect(x: 0, y: 0, width: activeSize.width / 2, height: activeSize.height / 2)
      let inactiveRect = CGRect(x: 0, y: 0, width: inactiveSize.width, height: inactiveSize.height)

      for view in self.subviews {
          if let imageView = self.imageForSubview(view) {
              if i == self.currentPage {
                imageView.image = self.imgActive
                if self.hasCustomTintColor {
                    imageView.tintColor = customActiveDotColor
                }
                imageView.frame = activeRect
                imageView.frame.origin.y = imageView.frame.origin.y - customActiveYOffet
              } else {
                imageView.image = self.imgInactive
                imageView.frame = inactiveRect
                imageView.frame.origin.y = imageView.frame.origin.y - customInactiveYOffset
              }
              i = i + 1
          } else {
              var dotImage = self.imgInactive
              if i == self.currentPage {
                  dotImage = self.imgActive
              }
              view.clipsToBounds = false
              let addedImageView: UIImageView = UIImageView(image: dotImage)
              if dotImage == self.imgActive {
                 addedImageView.frame = activeRect
                 addedImageView.frame.origin.y = addedImageView.frame.origin.y - customActiveYOffet
                if self.hasCustomTintColor {
                    addedImageView.tintColor = customActiveDotColor
                }
             } else {
                 addedImageView.frame.origin.y = addedImageView.frame.origin.y - customInactiveYOffset
             }
             view.addSubview(addedImageView)
             i = i + 1
          }
      }
  }

 func imageForSubview(_ view:UIView) -> UIImageView? {
    var dot: UIImageView?
    if let dotImageView = view as? UIImageView {
        dot = dotImageView
    } else {
        for foundView in view.subviews {
            if let imageView = foundView as? UIImageView {
                dot = imageView
                break
            }
        }
    }
    return dot
}

This has some issue, the image's origin.x has not set up correctly.