Data update

Task/Box-the-compass/Swift/box-the-compass-1.swift

@@ -0,0 +1,59 @@
+import Foundation
+
+extension Double {
+	var nearestQr: Double {(self * 4.0).rounded(.toNearestOrAwayFromZero) / 4.0}
+}
+
+extension Measurement<UnitAngle>/*: ExpressibleByFloatLiteral*/ {
+	var cos: Double { Darwin.cos(self.converted(to: .radians).value) }
+	var sin: Double { Darwin.sin(self.converted(to: .radians).value) }
+}
+
+struct Compass {
+	var bearing: Measurement<UnitAngle>
+	var style: Style = .RN
+	init(_ deg: Double, _ min: Double = 0, _ sec: Double = 0, style: Style = .RN
+	) {
+		self.bearing = .init(value: deg + min/60.0 + sec/360.0, unit: .degrees)
+		self.style = style
+	}
+	static func degreesToPoints(_ deg: Double) -> Double {
+		(deg/360 * 32).nearestQr
+	}
+	var point: Double {
+		Self.degreesToPoints(self.bearing.value)
+	}
+	var quad: (String,String) {
+		(bearing.cos < 0 ? "S" : "N", bearing.sin < 0 ? "W" : "E")
+	}
+	var step: (Int,Double) {
+		let temp = 8 - abs(abs(self.point - 16) - 8)
+		return (Int(temp),temp.truncatingRemainder(dividingBy: 1))
+	}
+	enum Style {case RN, USN, noBy}
+	var formats = ["N", "NxE", "NNE", "NExN", "NE", "NExE", "ENE", "ExN", "E"]
+	let fractions = ["¼","½","¾"]
+	var invertedPoints: [Int] {
+		switch self.style {
+		case .RN: [3,6,7]
+		case .USN: [3,7]
+		case .noBy: [1,5,7]
+		}
+	}
+
+	func named() -> String {
+		var (pt,frac) = self.step
+		var fracStr: String = ""
+		if frac != 0.0 {
+			if invertedPoints.contains(pt) {
+				pt += 1
+				fracStr = fractions.reversed()[Int(frac * 4) - 1] + "N"
+			} else {
+				fracStr = fractions[Int(frac * 4) - 1] + "E"
+			}
+		}
+		return (self.formats[pt] + fracStr)
+			.replacing(/(N|E)/) { $0.output.0 == "N" ? self.quad.0 : self.quad.1 }
+			.replacing(/x/) {_ in "by"}
+	}
+}

Task/Box-the-compass/Swift/box-the-compass-2.swift

@@ -0,0 +1,17 @@
+let arr = [
+	000.00, 016.87, 016.88, 033.75, 050.62, 050.63, 067.50, 084.37, 084.38,
+	090.00, 101.25, 118.12, 118.13, 135.00, 151.87, 151.88, 168.75, 185.62,
+	185.63, 202.50, 219.37, 219.38, 236.25, 253.12, 253.13, 270.00, 286.87,
+	286.88, 303.75, 320.62, 320.63, 337.50, 354.37, 354.38
+]
+
+let arr2 = stride(from: 0, through: 360, by: 22.5/8.0)
+
+let pointFormatter = NumberFormatter()
+pointFormatter.minimumIntegerDigits = 2
+pointFormatter.minimumFractionDigits = 2
+
+for d in arr {
+	let c = Compass(d, style: .RN)
+	print(pointFormatter.string(from: c.point as NSNumber)!, c.dms , c.named())
+}