getCardinalDirectionFromYaw

.swift

    enum CardinalDirection: String {
        case North = "North"
        case South = "South"
        case East = "East"
        case West = "West"
        case InBetween = "InBetween"
    }
    
    enum RotationDirection {
        case Clockwise
        case Counterclockwise
    }
    
    func getCardinalDirectionFromYaw(yaw: Double, accuracy: Double) {
        
        let cardinalDirection: CardinalDirection
        let OFFSET: Double = 23.5
        
        if (accuracy >= 1.91) {
            
            let rotationDirection: RotationDirection = yaw < 0 ? RotationDirection.Counterclockwise : RotationDirection.Clockwise
            
            switch yaw {
            case 360-OFFSET..<OFFSET:
                cardinalDirection = CardinalDirection.North
            case 90-OFFSET..<90+OFFSET:
                    cardinalDirection = CardinalDirection.East
            case 180-OFFSET..<180+OFFSET:
                cardinalDirection = CardinalDirection.South
            case 270-OFFSET..<270+OFFSET:
                cardinalDirection = CardinalDirection.West
            default:
                cardinalDirection = CardinalDirection.InBetween
            }
            
            headingValue.text = cardinalDirection.rawValue
        }
    }