如何在UIImageView中"级联"图像模式？

var images: [UIImage] = []

func addImage(_ image: UIImage) {
    images.append(image)
    setNeedsLayout()
}

override func layoutSubviews() {
    super.layoutSubviews()
    updateImageViews()
}

func updateImageViews() {
    // 移除所有子图像视图
    subviews.forEach { $0.removeFromSuperview() }

    // 为每个图像创建一个新的图像视图，并将其添加到CascadingImageView中
    images.enumerated().forEach { index, image in
        let imageView = UIImageView(image: image)
        imageView.contentMode = .scaleAspectFit
        addSubview(imageView)

        // 设置图像视图的frame
        let width = frame.width / CGFloat(images.count)
        let height = frame.height
        let x = CGFloat(index) * width
        let y: CGFloat = 0
        imageView.frame = CGRect(x: x, y: y, width: width, height: height)
    }
}