Get UIInterfaceOrientation based on UIScreen's UICoordinateSpaces

UIScreen+Orientation.swift

extension UIScreen {
  var orientation: UIInterfaceOrientation {
    let convertedZeroPoint = fixedCoordinateSpace.convert(CGPoint.zero, to: coordinateSpace)
    let coordinateSpaceBounds = coordinateSpace.bounds
    switch convertedZeroPoint {
    case .zero:
      return .portrait
    case CGPoint(x: coordinateSpaceBounds.maxX, y: coordinateSpaceBounds.minY):
      return .landscapeLeft
    case CGPoint(x: coordinateSpaceBounds.minX, y: coordinateSpaceBounds.maxY):
      return .landscapeRight
    case CGPoint(x: coordinateSpaceBounds.maxX, y: coordinateSpaceBounds.maxY):
      return .portraitUpsideDown
    default:
      return .unknown
    }
  }
}