Rough attempt at making a glowing pill style view

GlowingPillView.swift

//: A UIKit based Playground for presenting user interface
  
import UIKit
import PlaygroundSupport

class MyViewController : UIViewController {
    override func loadView() {
        let pillView = UIView(frame: CGRect(x: 64, y: 64, width: 32, height: 128))
        pillView.backgroundColor = .white
        pillView.layer.cornerRadius = pillView.frame.width / 2
        pillView.layer.borderWidth = 1
        pillView.layer.borderColor = UIColor.systemGray2.cgColor
        pillView.layer.shadowOffset = .zero
        pillView.layer.shadowColor = UIColor.systemGray4.cgColor
        pillView.layer.shadowRadius = 10
        pillView.layer.shadowOpacity = 0.75

        let fillView = UIView(frame: CGRect(x: 4, y: 32, width: 24, height: 92))
        fillView.layer.cornerRadius = fillView.frame.width / 2

        let fillGradient = CAGradientLayer()
        fillGradient.colors = [UIColor.systemOrange.cgColor, UIColor.systemRed.cgColor]
        fillGradient.frame = fillView.bounds
        fillGradient.cornerRadius = fillView.frame.width / 2
        fillView.layer.addSublayer(fillGradient)

        // This bit doesn't look quite right. Needs more tweaking to soften the edge or something.
//        let fillGradientGauss = CAGradientLayer()
//        fillGradientGauss.colors = [UIColor.systemOrange.cgColor, UIColor.systemRed.cgColor]
//        fillGradientGauss.cornerRadius = fillView.frame.width / 2
//        if let filter = CIFilter(name: "CIGaussianBlur") {
//            fillGradientGauss.filters = [filter]
//        }
//        fillGradientGauss.opacity = 0.3
//        fillGradientGauss.frame = fillView.bounds.applying(CGAffineTransform(scaleX: 1.2, y: 1.2))
//        fillView.layer.addSublayer(fillGradientGauss)

        fillView.layer.shadowOffset = .zero
        fillView.layer.shadowColor = UIColor.systemOrange.cgColor
        fillView.layer.shadowRadius = 10
        fillView.layer.shadowOpacity = 0.9
        fillView.layer.shadowPath = UIBezierPath(rect: fillView.bounds).cgPath

        pillView.addSubview(fillView)

        let bgView = UIView(frame: CGRect(x: 0, y: 0, width: 256, height: 256))
        bgView.backgroundColor = .white
        
        bgView.addSubview(pillView)
        self.view = bgView
    }
}
// Present the view controller in the Live View window
PlaygroundPage.current.liveView = MyViewController()