Merge commit '46f51bee' into develop

Seilassist/Sailassist.xcodeproj/project.pbxproj

@@ -61,6 +61,7 @@
 		D5AE351A2AEBA66A00059889 /* ReqLogin.swift in Sources */ = {isa = PBXBuildFile; fileRef = D5AE35182AEBA66A00059889 /* ReqLogin.swift */; };
 		D5AE351B2AEBA66A00059889 /* ResLogin.swift in Sources */ = {isa = PBXBuildFile; fileRef = D5AE35192AEBA66A00059889 /* ResLogin.swift */; };
 		D5AE351D2AEBA6FC00059889 /* SessionLogin.swift in Sources */ = {isa = PBXBuildFile; fileRef = D5AE351C2AEBA6FC00059889 /* SessionLogin.swift */; };
+		D5EA864A2AF213C90032E810 /* LocationCalculation.swift in Sources */ = {isa = PBXBuildFile; fileRef = D5EA86492AF213C90032E810 /* LocationCalculation.swift */; };
 /* End PBXBuildFile section */
 
 /* Begin PBXContainerItemProxy section */
@@ -152,6 +153,7 @@
 		D5AE35182AEBA66A00059889 /* ReqLogin.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; name = ReqLogin.swift; path = Sailassist/Json/ReqLogin.swift; sourceTree = SOURCE_ROOT; };
 		D5AE35192AEBA66A00059889 /* ResLogin.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; name = ResLogin.swift; path = Sailassist/Json/ResLogin.swift; sourceTree = SOURCE_ROOT; };
 		D5AE351C2AEBA6FC00059889 /* SessionLogin.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; name = SessionLogin.swift; path = Sailassist/ServerSession/SessionLogin.swift; sourceTree = SOURCE_ROOT; };
+		D5EA86492AF213C90032E810 /* LocationCalculation.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; name = LocationCalculation.swift; path = ../../../../Sailassist_login/Seilassist/Sailassist/Location/LocationCalculation.swift; sourceTree = "<group>"; };
 /* End PBXFileReference section */
 
 /* Begin PBXFrameworksBuildPhase section */
@@ -208,6 +210,7 @@
 		020B98122AD8C3140029DE4C /* SailAssist */ = {
 			isa = PBXGroup;
 			children = (
+				D5EA86482AF2139D0032E810 /* Location */,
 				D52D213B2AEBB78E00324D58 /* ECA */,
 				D52D21382AEBABE700324D58 /* Http */,
 				D5AE35172AEBA64800059889 /* Json */,
@@ -467,6 +470,14 @@
 			path = Json;
 			sourceTree = "<group>";
 		};
+		D5EA86482AF2139D0032E810 /* Location */ = {
+			isa = PBXGroup;
+			children = (
+				D5EA86492AF213C90032E810 /* LocationCalculation.swift */,
+			);
+			path = Location;
+			sourceTree = "<group>";
+		};
 /* End PBXGroup section */
 
 /* Begin PBXNativeTarget section */
@@ -602,6 +613,7 @@
 				02CD06912AE6536B005F8D8F /* LayerEnum.swift in Sources */,
 				020B98532AD919180029DE4C /* LoginTypeSelectView.swift in Sources */,
 				D52D213F2AEBB7D700324D58 /* RegisteredEca.swift in Sources */,
+				D5EA864A2AF213C90032E810 /* LocationCalculation.swift in Sources */,
 				02CD06952AE895F5005F8D8F /* APIError.swift in Sources */,
 				02CE4DC82ADF97E8002E79BC /* View+Extensions.swift in Sources */,
 				020B98412AD8C3810029DE4C /* LoginView.swift in Sources */,
@@ -800,7 +812,7 @@
 				CODE_SIGN_STYLE = Automatic;
 				CURRENT_PROJECT_VERSION = 1;
 				DEVELOPMENT_ASSET_PATHS = "\"Sailassist/Preview Content\"";
-				DEVELOPMENT_TEAM = 886VZM9928;
+				DEVELOPMENT_TEAM = D2DC7QNNJ8;
 				ENABLE_PREVIEWS = YES;
 				GENERATE_INFOPLIST_FILE = YES;
 				INFOPLIST_FILE = Sailassist/Info.plist;
@@ -832,7 +844,7 @@
 				CODE_SIGN_STYLE = Automatic;
 				CURRENT_PROJECT_VERSION = 1;
 				DEVELOPMENT_ASSET_PATHS = "\"Sailassist/Preview Content\"";
-				DEVELOPMENT_TEAM = 886VZM9928;
+				DEVELOPMENT_TEAM = D2DC7QNNJ8;
 				ENABLE_PREVIEWS = YES;
 				GENERATE_INFOPLIST_FILE = YES;
 				INFOPLIST_FILE = Sailassist/Info.plist;

Seilassist/Sailassist/Location/LocationCalculation.swift

+//
+//  LocationCalculation.swift
+//  jmarine
+//
+//  Created by chihirohirakawa on 2020/05/20.
+//  Copyright © 2020 J-MarineCloud. All rights reserved.
+//
+
+import Foundation
+import CoreLocation
+// import Mapbox
+
+class LocationCalculation{
+    static let nm = 1852.0                 // 国際海里 1852.0[m]
+    
+    /**
+     * NMをkmに変換
+     */
+    static func nm2km(nm: Double) -> Double{
+        return nm * 1.852
+    }
+    
+    /**
+     * kmをNMに変換
+     */
+    static func km2nm(km: Double) -> Double{
+        return km / 1.852
+    }
+    
+    static func kn2kmh(kn: Double) -> Double{
+        return  kn * 1.852
+    }
+    
+    static func deg2rad(deg: Double) -> Double {
+        return (deg / 180.0) * Double.pi
+    }
+    
+    static func rad2deg(rad: Double) -> Double {
+        return (rad / Double.pi) * 180.0
+    }
+    
+    /**
+     * 地理座標の確認
+     */
+    static func checkPosition(pos: CLLocationCoordinate2D) -> Bool { // ENvCheckPos
+        return pos.latitude >= -90.0 && pos.latitude <= 90.0 && pos.longitude >= -180.0 && pos.longitude <= 180.0
+    }
+
+    /**
+     * 角度の正規化
+     */
+    static func rangeDegree(degree: Double) -> Double {
+        var rangeDegree = degree
+        while (rangeDegree >= 360.0) {
+            rangeDegree -= 360.0
+        }
+
+        while (rangeDegree < 0.0) {
+            rangeDegree += 360.0
+        }
+
+        if (rangeDegree == 360.0) {
+            rangeDegree = 0.0
+        }
+
+        return rangeDegree
+    }
+    
+    /// 2点間距離の算出
+    /// - Parameters:
+    ///   - posAlat: 地点A緯度
+    ///   - posAlon: 地点A経度
+    ///   - posBlat: 地点B緯度
+    ///   - posBlon: 地点B経度
+    /// - Returns:
+    ///   単位：メートル
+    static func distance(posAlat:Double, posAlon:Double, posBlat:Double, posBlon:Double) -> Double {
+        //2点の緯度の平均
+        let latAvg = deg2rad(deg: posAlat + ((posBlat - posAlat) / 2.0))
+        //2点の緯度差
+        let latDifference = deg2rad(deg: posAlat - posBlat)
+        //2点の経度差
+        let lonDifference = deg2rad(deg: posAlon - posBlon)
+
+        let curRadiusTemp = 1 - 0.00669438 * pow(sin(latAvg), 2.0)
+        
+        //子午線曲率半径
+        let meridianCurvatureRadius = 6335439.327 / sqrt(pow(curRadiusTemp, 3.0))
+        //卯酉線曲率半径
+        let primeVerticalCircleCurvatureRadius = 6378137 / sqrt(curRadiusTemp)
+        
+        //2点間距離
+        let distanceTemp = pow(meridianCurvatureRadius * latDifference, 2.0) + pow(primeVerticalCircleCurvatureRadius * cos(latAvg) * lonDifference, 2.0)
+        return sqrt(distanceTemp) //メートル単位
+    }
+    /// 2点間距離の算出
+    /// - Parameters:
+    ///   - posA: 地点A
+    ///   - posB: 地点B
+    /// - Returns:
+    ///   単位：メートル
+    static func distance(posA: CLLocationCoordinate2D, posB: CLLocationCoordinate2D) -> Double {
+        return distance(posAlat: posA.latitude, posAlon: posA.longitude, posBlat: posB.latitude, posBlon: posB.longitude)
+    }
+    
+    /// 地点Bから地点Aをみたときの方位角
+    /// - Parameters:
+    ///   - posAlat: 地点A緯度
+    ///   - posAlon: 地点A経度
+    ///   - posBlat: 地点B緯度
+    ///   - posBlon: 地点B経度
+    /// - Returns:
+    ///   単位：度
+    static func direction(posAlat:Double, posAlon:Double, posBlat:Double, posBlon:Double) -> Double {
+        let posA_lat = deg2rad(deg: posAlat)
+        let posA_lon = deg2rad(deg: posAlon)
+        let posB_lat = deg2rad(deg: posBlat)
+        let posB_lon = deg2rad(deg: posBlon)
+        
+        //経度の中心地
+        let posC_lat = (posA_lat + posB_lat) / 2.0
+        let dx = 6378137 * (posB_lon - posA_lon) * cos(posC_lat)
+        let dy = 6378137 * (posB_lat - posA_lat)
+
+        if(dx == dy){
+            return 0.0
+        }
+        
+        //なぜか左向きが０度、反時計回りに増える
+        let deg = rad2deg(rad: atan2(dy, dx))
+
+        //それを修正
+        let deg_o = deg + 90
+        let deg_p = 360 - deg_o
+        
+        if(deg_p >= 360) {
+            return deg_p - 360
+        } else{
+            return deg_p
+        }
+    }
+
+    
+    /// 起点から指定の距離方位分移動した地点の緯度経度
+    /// - Parameters:
+    ///   - startPointLat: 起点緯度
+    ///   - startPointLon: 起点経度
+    ///   - initialBearing: 方位
+    ///   - distanceKilometers: 距離（キロメートル指定）
+    /// - Returns:
+    ///   移動した地点の緯度経度
+    static func findPointAtDistanceFrom(
+        startPointLat:Double,
+        startPointLon:Double,
+        initialBearing:Double,
+        distanceKilometers:Double) -> CLLocationCoordinate2D {
+        
+        let initialBearingRadians = initialBearing * 2.0 * Double.pi / 360.0
+        let radiusEarthKilometers = 6371.01
+        let distRatio = distanceKilometers / radiusEarthKilometers
+        let distRatioSine = sin(distRatio)
+        let distRatioCosine = cos(distRatio)
+
+        let startLatRad = deg2rad(deg: startPointLat)
+        let startLonRad = deg2rad(deg: startPointLon)
+
+        let startLatCos = cos(startLatRad)
+        let startLatSin = sin(startLatRad)
+
+        let endLatRads = asin((startLatSin * distRatioCosine) + (startLatCos * distRatioSine * cos(initialBearingRadians)))
+
+        let endLonRads = startLonRad + atan2(sin(initialBearingRadians) * distRatioSine * startLatCos, distRatioCosine - startLatSin * sin(endLatRads))
+
+        return CLLocationCoordinate2D(latitude: rad2deg(rad: endLatRads), longitude: rad2deg(rad: endLonRads))
+    }
+    
+    /// 地点Aと地点Bをの間の位置
+    /// - Parameters:
+    ///   - posAlat: 地点A緯度
+    ///   - posAlon: 地点A経度
+    ///   - posBlat: 地点B緯度
+    ///   - posBlon: 地点B経度
+    /// - Returns:
+    ///   ２地点間の中間緯度経度
+    static func halfPoint(posAlat:Double, posAlon:Double, posBlat:Double, posBlon:Double) -> CLLocationCoordinate2D {
+        
+        let lat = ( posAlat + posBlat ) / 2
+        let lon = ( posAlon + posBlon ) / 2
+
+        return CLLocationCoordinate2D(latitude: lat, longitude: lon)
+    }
+    
+    /// Plygonの中心の位置
+    /// - Parameters:
+    ///   - positions: 地点配列
+    /// - Returns:
+    ///   Polygonの中間緯度経度
+    static func CenterPoint(positions : [CLLocationCoordinate2D]) -> CLLocationCoordinate2D {
+        
+        var latMax : Double = 0
+        var latMin : Double = 360
+        var lonMax : Double = 0
+        var lonMin : Double = 360
+        for position in positions {
+            if latMax < position.latitude{
+                latMax = position.latitude
+            }
+            if latMin > position.latitude{
+                latMin = position.latitude
+            }
+            if lonMax < position.longitude{
+                lonMax = position.longitude
+            }
+            if lonMin > position.longitude{
+                lonMin = position.longitude
+            }
+        }
+        let lat = ( latMax + latMin ) / 2
+        let lon = ( lonMax + lonMin ) / 2
+
+        return CLLocationCoordinate2D(latitude: lat, longitude: lon)
+    }
+    
+    /// 緯度を数値から文字列に変換
+    /// - Parameters:
+    ///   - lat: 緯度数値
+    /// - Returns
+    ///  緯度文字列
+    static func latDegtoString(lat: Double) -> String {
+        let latNS : String
+        if (lat >= 0){
+            latNS = "N"
+        } else {
+            latNS = "S"
+        }
+        
+        let latNum : Double
+        if (lat >= 0) {
+            latNum = lat
+        }else{
+            latNum = -lat
+        }
+        
+        let latDeg = Int32(latNum)
+        let latMin = (latNum - Double(latDeg)) * 60.0
+
+        return "\(latDeg)°\(String(format:"%06.3f", latMin))′\(latNS)"
+    }
+
+    /// 経度を数値から文字列に変換
+    /// - Parameters:
+    ///   - lon: 経度数値
+    /// - Returns
+    ///  経度文字列
+    static func lonDegtoString(lon: Double) -> String {
+        let lonEW : String
+        if (lon >= 0){
+            lonEW = "E"
+        }else{
+            lonEW = "W"
+        }
+    
+        let lonNum : Double
+        if (lon >= 0){
+            lonNum = lon
+        } else {
+            lonNum = -lon
+        }
+        
+        let lonDeg = Int32(lonNum)
+        let lonMin = (lonNum - Double(lonDeg)) * 60.0
+
+        return "\(lonDeg)°\(String(format:"%06.3f", lonMin))′\(lonEW)"
+    }
+    
+    /**
+     * 緯度の文字列を数値に変換
+     * NXX°XX.XX
+     */
+    static func latDegtoDouble(lat: String) -> Double? {
+        var number: String
+        var direction: Double
+        if (!lat.contains("N")) {
+            number = lat.replacingOccurrences(of: "S", with: "")
+            direction = -1.0
+        } else {
+            number = lat.replacingOccurrences(of: "N", with: "")
+            direction = 1.0
+        }
+
+        let min = number.components(separatedBy: ".")
+        if min.count < 1{
+            return nil
+        }
+        let deg = min[0].components(separatedBy: "°")
+        if deg.count < 2{
+            return nil
+        }
+        if let deg0 = Double(deg[0]),
+           let deg1 = Double(deg[1]),
+           let min1Str = min[1].components(separatedBy: "′").first,
+           let min1 = Double(min1Str)
+        {
+            let decimal = (deg1 + min1 / pow(10.0, Double(min1Str.count))) / 60.0
+            return ((deg0 + decimal) * direction)
+        }else{
+            return nil
+        }
+        
+    }
+
+    /**
+     * 経度の文字列を数値に変換
+     * EXXX°XX.XX
+     */
+    static func lonDegtoDouble(lon: String) -> Double? {
+        var number: String
+        var direction: Double
+        if (!lon.contains("E")) {
+            number = lon.replacingOccurrences(of: "W", with: "")
+            direction = -1.0
+        } else {
+            number = lon.replacingOccurrences(of: "E", with: "")
+            direction = 1.0
+        }
+
+        let min = number.components(separatedBy: ".")
+        if min.count < 1{
+            return nil
+        }
+        let deg = min[0].components(separatedBy: "°")
+        if deg.count < 2{
+            return nil
+        }
+        if let deg0 = Double(deg[0]),
+           let deg1 = Double(deg[1]),
+           let min1Str = min[1].components(separatedBy: "′").first,
+           let min1 = Double(min1Str)
+        {
+            let decimal = (deg1 + min1 / pow(10.0, Double(min1Str.count))) / 60.0
+            return ((deg0 + decimal) * direction)
+        }else{
+            return nil
+        }
+    }
+    
+    
+    ///
+    ///自船の周囲５NMより外にいるか
+    ///外→true
+    ///内→false
+    static func isOutOf5nm(lat: Double, lon: Double) -> Bool {
+        let myLat = SharingData.My.location?.latitude ?? 0
+        let mylon = SharingData.My.location?.longitude ?? 0
+        let distance = distance(posAlat: lat, posAlon: lon, posBlat: myLat, posBlon: mylon)
+        return distance/nm > 5
+    }
+    
+    ///時計回りか
+    ///return: 1 -> 時計回り
+    ///     -1 -> 反時計回り
+    ///     null -> 直線or点
+    static func clockWise(obj: [CLLocationCoordinate2D]) -> Int?{
+        if obj.count < 3{
+            //3点未満であれば直線or点
+            return nil
+        }else{
+            var s = 0.0
+            for i in 0...(obj.count - 2){
+                s += ((obj[i].longitude * obj[i + 1].latitude) - (obj[i + 1].longitude * obj[i].latitude))
+            }
+            if s > 0 {
+                return -1
+            }else if s < 0{
+                return 1
+            }else{
+                return nil
+            }
+        }
+    }
+    
+    /// 地点Bから地点Aをみたときの方位角文字列
+    /// - Parameters:
+    ///   - posAlat: 地点A緯度
+    ///   - posAlon: 地点A経度
+    ///   - posBlat: 地点B緯度
+    ///   - posBlon: 地点B経度
+    /// - Returns:
+    ///   単位：度
+    static func directionStr(posAlat:Double, posAlon:Double, posBlat:Double, posBlon:Double) -> String {
+        let direction = direction(posAlat: posAlat, posAlon: posAlon, posBlat: posBlat, posBlon: posBlon)
+        return String(round(direction)) + "°"
+
+    }
+    
+    ///距離（NM）を文字列に変換
+    static func distance2Str(nm: Double) -> String{
+        var rtnStr = ""
+        if nm < 0.1{
+            rtnStr = String(format:"%.2f", nm) + "NM"
+        }else if nm < 1000{
+            rtnStr = String(format:"%.1f", nm) + "NM"
+        }else{
+            rtnStr = String(Int(nm)) + "NM"
+        }
+        return rtnStr
+    }
+    
+    static let rad45 = 0.785398163397448   // radで45°
+    static let rDeg = 57.295779513082323   // radからdegに変換する乗数
+    static let eEccentricity = 0.08181919  // 離心率
+    static let brg = 0.001                 // 方位精度
+    static let deg2NM = 60.0
+    static let pidDiv2 = Double.pi / 2.0
+    static let errorRange = 0.00001        //誤差範囲
+
+    struct AreaLatLon {
+        var NorthLat: Double = 0.0
+        var SouthLat: Double = 0.0
+        var EastLon: Double = 0.0
+        var WestLon: Double = 0.0
+    }
+
+    /**
+     * 包囲チェック
+     * 1)直線X=CXとオブジェクトの各辺との交点を求め、交点が検索領域の中心CYより上方にあるもの
+     *   下方にあるものをそれぞれカウントし、それぞれが奇数個ならば、検索対象オブジェクトが検索領域を包囲していると判断する
+     * 2)始点、終点がともにX=CX上に存在する場合、つまり、X=CXと重なる垂直線の場合はカウントしない
+     * 3)終点のみX=CX上にある場合はカウントし、次の直線がX=CXと重ならない場合で、終点がCXを中心にして、
+     *   前の始点と同じ方向にある場合はカウントし、逆の方向にある場合はカウントしない
+     *
+     * MFD /src/Chart/DecisionAlgorithm.cpp CheckBeset移植
+     */
+    static func checkBeset(
+        objPos: Array<CLLocationCoordinate2D>,
+        minMax: AreaLatLon,
+        exceed180: Bool)
+        -> Bool
+    {
+        var lUpperCnt = 0
+        var lLowerCnt = 0
+        var lBeforeLR = 0                   //-1:Left 1:Right
+        var lpSP = CLLocationCoordinate2D(latitude: 0.0, longitude: 0.0)    //180度回り込み経度換算処理後の始点
+        var lpEP = CLLocationCoordinate2D(latitude: 0.0, longitude: 0.0)    //180度回り込み経度換算処理後の終点
+        let cx = (minMax.EastLon + minMax.WestLon) / 2.0
+        let cy = (minMax.NorthLat + minMax.SouthLat) / 2.0
+
+        let max = objPos.count - 2
+        for i in 0...max {
+            //180度回り込みチェック用のワークエリアに移す
+            lpSP = objPos[i]
+            lpEP = objPos[(i + 1)]
+
+            //180度回り込み経度換算処理 (TransLonの中で検査領域minMaxの180度回り込みもチェック)
+            if lpSP.longitude > lpEP.longitude {
+                if ((lpEP.longitude < 0.0) && (lpSP.longitude > 0.0))
+                    && ((lpEP.longitude + 180.0) < lpSP.longitude) {  //Objectの直線が180度を跨っている時
+                    //最大、最小を入れ替えて、経度を換算する
+                    let check = transLon(max: lpEP, min: lpSP, minMax: minMax, exceed180: true, exceed180Search: exceed180)
+                    lpEP = check.first
+                    lpSP = check.second
+                } else {
+                    let check = transLon(max: lpSP, min: lpEP, minMax: minMax, exceed180: false, exceed180Search: exceed180)
+                    lpSP = check.first
+                    lpEP = check.second
+                }
+            } else {
+                if ((lpSP.longitude < 0.0) && (lpEP.longitude > 0.0))
+                    && ((lpSP.longitude + 180.0) < lpEP.longitude) {   //Objectの直線が180度を跨っている時
+                    //最大、最小を入れ替えて、経度を換算する
+                    let check = transLon(max: lpSP, min: lpEP, minMax: minMax, exceed180: true, exceed180Search: exceed180)
+                    lpSP = check.first
+                    lpEP = check.second
+                } else {
+                    let check = transLon(max: lpEP, min: lpSP, minMax: minMax, exceed180: false, exceed180Search: exceed180)
+                    lpEP = check.first
+                    lpSP = check.second
+                }
+            }
+
+            var maxX: CLLocationDegrees
+            if lpEP.longitude > lpSP.longitude {
+                maxX = lpEP.longitude
+            } else {
+                maxX = lpSP.longitude
+            }
+            var minX: CLLocationDegrees
+            if lpEP.longitude < lpSP.longitude {
+                minX = lpEP.longitude
+            } else {
+                minX = lpSP.longitude
+            }
+            if (maxX < cx) || (minX > cx) {
+                //中心線と交わらない場合
+                continue
+            }
+            if lpEP.longitude == lpSP.longitude {
+                //垂直線の場合
+                continue
+            }
+
+            if lpEP.latitude == lpSP.latitude { //平行線の場合
+                if lpSP.longitude == cx {  //始点が中心線上にある場合
+                    //終点がその前の線分の始点と同じ方向か？
+                    if (lpEP.longitude == maxX && lBeforeLR == 1)
+                        || (lpEP.longitude == minX && lBeforeLR == -1) {
+                        //同じならばカウントする
+                        if lpSP.latitude > cy {
+                            lUpperCnt += 1
+                        } else {
+                            lLowerCnt += 1
+                        }
+                        lBeforeLR = 0
+                    }
+                } else if lpEP.longitude == cx {   //終点が中心線上にある場合
+                    //カウントする
+                    if lpEP.latitude > cy {
+                        lUpperCnt += 1
+                    } else {
+                        lLowerCnt += 1
+                    }
+                    if lpSP.longitude == maxX {
+                        lBeforeLR = 1   //線分の始点が中心より右
+                    } else {
+                        lBeforeLR = -1  //線分の始点が中心より左
+                    }
+                } else {    //X=CXと交わる平行線なので、カウントする
+                    if (lpSP.latitude > cy) {
+                        lUpperCnt += 1
+                    } else {
+                        lLowerCnt += 1
+                    }
+                }
+                continue
+            }
+
+            //直線S-E Y=(Ey-Sy)/Ex-Sx)*X+(Sy*Ex-Sx*Ey)/(Ex-Sx)
+            //交点のY座標、Y
+            let Y = (lpEP.latitude - lpSP.latitude) / (lpEP.longitude - lpSP.longitude) * cx +
+                    (lpSP.latitude * lpEP.longitude - lpSP.longitude * lpEP.latitude) /
+                    (lpEP.longitude - lpSP.longitude)
+            if lpSP.longitude == cx {   //始点が中心線上にある場合
+                //終点がその前の線分の始点と同じ方向か?
+                if (lpEP.longitude == maxX && lBeforeLR == 1)
+                    || (lpEP.longitude == minX && lBeforeLR == -1)
+                {
+                    //同じならばカウントする
+                    if lpSP.latitude > cy {
+                        lUpperCnt += 1
+                    } else {
+                        lLowerCnt += 1
+                    }
+                }
+                lBeforeLR = 0
+            } else if lpEP.longitude == cx {    //終点が中心線上にある場合
+                if (lpEP.latitude > cy) {
+                    lUpperCnt += 1
+                } else {
+                    lLowerCnt += 1
+                }
+                if lpSP.longitude == maxX {
+                    lBeforeLR = 1   //線分の始点が中心より右
+                } else {
+                    lBeforeLR = -1  //線分の始点が中心より左
+                }
+            } else {
+                //X=CXと交わる線分なので、カウントする
+                if Y > cy {
+                    lUpperCnt += 1
+                } else {
+                    lLowerCnt += 1
+                }
+            }
+        }
+
+        if lUpperCnt % 2 == 1 && lLowerCnt % 2 == 1{
+            return true
+        } else {
+            return false
+        }
+    }
+
+    /**
+     * 180度跨りを考慮した直線の経度の変換
+     * 2点を受け取り、検索領域が180度を跨っているかどうかによって2点の経度を変換する
+     */
+    static func transLon(
+        max: CLLocationCoordinate2D,
+        min: CLLocationCoordinate2D,
+        minMax: AreaLatLon,
+        exceed180: Bool,
+        exceed180Search: Bool)
+        -> (first: CLLocationCoordinate2D, second: CLLocationCoordinate2D)
+    {
+        var maxRt = max
+        var minRt = min
+
+        //Objectの直線が180度を跨っている時は最小、最大を入れ替え済み
+        if exceed180Search {  //検索領域が180度を跨っている時
+            if min.longitude < 0.0  { //最小経度が-ならば、最小、最大経度に360度をプラスする
+                minRt.longitude = min.longitude + 360.0
+                maxRt.longitude = max.longitude + 360.0
+            } else if max.longitude < 0.0 {
+                maxRt.longitude = max.longitude + 360.0
+            }
+        } else {    //検索領域は180度を跨っていない
+            if exceed180 { //Objectの直線が180度を跨っている時
+                if minMax.WestLon > 0.0 { //検索領域の経度が+
+                    maxRt.longitude = max.longitude + 360.0
+                } else {    //検索領域の経度が-
+                    minRt.longitude = min.longitude - 360.0
+                }
+            }
+        }
+        return (maxRt, minRt)
+    }
+
+    enum Mrdc {
+        case E_NV_MRDC_NORMAL
+        case E_NV_MRDC_XTE_R
+    }
+
+    struct ShipPosInf {
+        var retCode: Bool = false   //正常終了:true 異常(位置異常):false
+        var co1: Double = 0.0       //前回位置から次回位置への方位[deg]
+        var co2: Double = 0.0       //次回位置から前回位置への方位[deg]
+        var dist: Double = 0.0      //前回位置から次回位置までの距離[nm]
+    }
+
+    struct DistanceInf {
+        var retCode: Bool = false   //正常終了:true 異常(位置異常):false
+        var dist: Double = 0.0      //前回位置から次回位置までの距離[nm]
+    }
+
+    struct BearingInf {
+        var retCode: Bool = false   //正常終了:true 異常(位置異常):false
+        var co1: Double = 0.0       //前回位置から次回位置への方位[deg]
+        var co2: Double = 0.0       //次回位置から前回位置への方位[deg]
+    }
+
+    /**
+     * 線跨ぎ確認用処理
+     */
+    static func checkCrossLine(
+        lastPos: CLLocationCoordinate2D,    //レグ起点
+        nextPos: CLLocationCoordinate2D,    //レグ終点
+        shipPos: CLLocationCoordinate2D)    //自船位置
+            -> (retCode: Bool, xte: Double) //正常終了:true 異常:false 距離[NM]
+    {
+        let deg1 = bearing(lastPos: lastPos, nextPos: nextPos)    //レグ起点 → レグ終点
+        let deg2 = bearing(lastPos: lastPos, nextPos: shipPos)    //レグ起点 → 自船位置
+        let deg3 = bearing(lastPos: nextPos, nextPos: shipPos)    //レグ終点 → 自船位置
+
+        //自船を頂点とした方位が９０度以内
+        if (deg1.retCode && deg2.retCode && deg3.retCode) {
+            let brg1 = abs(deg1.co1 - deg2.co1)
+            let brg2 = abs(deg3.co1 - deg1.co2)
+            if (brg1 <= 90.0 && brg2 <= 90.0) {
+                let rtn = eNvXteRL(lastPos: lastPos, nextPos: nextPos, shipPos: shipPos)
+                if (rtn.retCode) {
+                    return (true, rtn.xte)
+                }
+            }
+
+            let brg3 = abs(deg1.co2 - deg2.co2)
+            let brg4 = abs(deg3.co2 - deg1.co1)
+            if (brg3 <= 90.0 && brg4 <= 90.0) {
+                let rtn = eNvXteRL(lastPos: lastPos, nextPos: nextPos, shipPos: shipPos)
+                if (rtn.retCode) {
+                    return (true, rtn.xte)
+                }
+            }
+        }
+        return (false, 0.0)
+    }
+
+    /**
+     * 線に対して直交するか確認
+     */
+    static func checkCross(
+        lastPos: CLLocationCoordinate2D,       //レグ起点
+        nextPos: CLLocationCoordinate2D,       //レグ終点
+        shipPos: CLLocationCoordinate2D)       //自船位置
+            -> Bool
+    {
+        var checkCross: Bool = false
+
+        let deg1 = bearing(lastPos: lastPos, nextPos: nextPos)   //レグ起点 → レグ終点
+        let deg2 = bearing(lastPos: lastPos, nextPos: shipPos)   //レグ起点 → 自船位置
+        let deg3 = bearing(lastPos: nextPos, nextPos: shipPos)   //レグ終点 → 自船位置
+
+        //自船を頂点とした方位が９０度以内
+        if (deg1.retCode && deg2.retCode && deg3.retCode) {
+            let brg1 = abs(deg1.co1 - deg2.co1)
+            let brg2 = abs(deg3.co1 - deg1.co2)
+            if (brg1 <= 90.0 && brg2 <= 90.0) {
+                checkCross = true
+            }
+
+            let brg3 = abs(deg1.co2 - deg2.co2)
+            let brg4 = abs(deg3.co2 - deg1.co1)
+            if (brg3 <= 90.0 && brg4 <= 90.0) {
+                checkCross = true
+            }
+        }
+        return checkCross
+    }
+
+    /**
+     * 線迄の距離
+     */
+    static func checkPolyLine(
+        objPos: Array<CLLocationCoordinate2D>,
+        shipPos: CLLocationCoordinate2D)
+            -> Double
+    {
+        //Loopしているか確認
+        var isLoop = false
+        if objPos[0].latitude == objPos[(objPos.count - 1)].latitude
+            && objPos[0].longitude == objPos[(objPos.count - 1)].longitude {
+            isLoop = true
+        }
+
+        var loopCntMax = objPos.count
+        if isLoop {
+            loopCntMax = objPos.count - 1
+        }
+
+        var distance = 10000000.0
+        var nearbyPoint = 0
+        for cnt in 0...(loopCntMax - 1) {
+            let newDistance = distance2(lastPos: objPos[cnt], nextPos: shipPos, type: Mrdc.E_NV_MRDC_NORMAL)
+            if newDistance.retCode {
+                print(debug: "checkPolyLine \(newDistance) (cnt)")
+                if distance > newDistance.dist {
+                    distance = newDistance.dist
+                    nearbyPoint = cnt
+                }
+            }
+        }
+
+        //近いポイントの前のポイント
+        var beforePoint = 0
+        if nearbyPoint == (loopCntMax - 1) {
+            if isLoop {
+                beforePoint = loopCntMax - 1
+            } else {
+                beforePoint = 0
+            }
+        } else {
+            beforePoint = nearbyPoint - 1
+        }
+
+        //近いポイントの次のポイント
+        var nextPoint = 0
+        if nearbyPoint == (loopCntMax - 1) {
+            if isLoop {
+                nextPoint = 0
+            } else {
+                nextPoint = nearbyPoint
+            }
+        } else {
+            nextPoint = nearbyPoint + 1
+        }
+
+        var outside1 = false
+        var distance1 = 0.0
+        var checkCross1 = false
+        let rtn1 = eNvXteRL(lastPos: objPos[beforePoint], nextPos: objPos[nearbyPoint], shipPos: shipPos)
+        if rtn1.retCode {
+            print(debug: "checkPolyLine \(rtn1)/(beforePoint)/(nearbyPoint)/(distance)")
+            if rtn1.xte < 0 {
+                outside1 = true
+            }
+            distance1 = rtn1.xte
+            //自船を頂点とした方位が９０度以内
+            checkCross1 = checkCross(lastPos: objPos[beforePoint], nextPos: objPos[nearbyPoint], shipPos: shipPos)
+        }
+
+        var outside2 = false
+        var distance2 = 0.0
+        var checkCross2 = false
+        let rtn2 = eNvXteRL(lastPos: objPos[nearbyPoint], nextPos: objPos[nextPoint], shipPos: shipPos)
+        if rtn2.retCode {
+            print(debug: "checkPolyLine \(rtn2)/(beforePoint)/(nearbyPoint)/(distance)")
+            if rtn2.xte < 0 {
+                outside2 = true
+            }
+            distance2 = rtn2.xte
+            //自船を頂点とした方位が９０度以内
+            checkCross2 = checkCross(lastPos: objPos[nearbyPoint], nextPos: objPos[nextPoint], shipPos: shipPos)
+        }
+
+        var lineDistance = 0.0
+        var outside = false
+        if checkCross1 && checkCross2 {
+            distance1 = abs(distance1)
+            distance2 = abs(distance2)
+            if distance1 < distance2 {
+                lineDistance = distance1
+                outside = outside1
+            } else {
+                lineDistance = distance2
+                outside = outside2
+            }
+        }
+
+        if !checkCross1 && !checkCross2 {
+            lineDistance = distance
+            outside = outside1
+        }
+
+        if checkCross1 && !checkCross2 {
+            lineDistance = distance1
+            outside = outside1
+        }
+
+        if !checkCross1 && checkCross2 {
+            lineDistance = distance2
+            outside = outside2
+        }
+
+        if distance < lineDistance {
+            lineDistance = distance
+        }
+
+        lineDistance = abs(lineDistance)
+        if outside {
+            lineDistance *= -1
+        }
+        print(debug: "checkPolyLine \(lineDistance)")
+        return lineDistance
+    }
+
+    /**
+     * XTE(航路ずれ)計算(RL)
+     * 航路データとNextWP番号、自船位置を与えて航路からの距離(XTE)を求める
+     *
+     * build/src/ENv/ENv.cpp ENvXteRL
+     */
+    static func eNvXteRL(
+        lastPos: CLLocationCoordinate2D,    //レグ起点
+        nextPos: CLLocationCoordinate2D,    //レグ終点
+        shipPos: CLLocationCoordinate2D)    //自船位置
+        -> (retCode: Bool, xte: Double)     //正常終了:true 異常:false 距離[NM]
+    {
+        let rtn1 = eNvMrdc(lastPos: lastPos, nextPos: nextPos, type: Mrdc.E_NV_MRDC_NORMAL)
+        print(debug: "eNvXteRL1 \(rtn1)")
+        if (!rtn1.retCode) {
+            return (false, 0.0)
+        }
+        let rRegCo = LocationCalculation.deg2rad(deg: rtn1.co1)
+        let rtn2 = eNvMrdc(lastPos: lastPos, nextPos: shipPos, type: Mrdc.E_NV_MRDC_NORMAL)
+        print(debug: "eNvXteRL2 \(rtn2)")
+        if (!rtn2.retCode) {
+            return (false, 0.0)
+        }
+        let rShipCo = LocationCalculation.deg2rad(deg: rtn2.co1)
+        let xte = rtn2.dist * sin(rShipCo - rRegCo)
+        return (true, xte)
+    }
+
+    /**
+     * 等角航法での距離・方位計算
+     *
+     * build/src/ENv/ENv.cpp ENvMrdc移植
+     */
+    static func eNvMrdc(
+        lastPos: CLLocationCoordinate2D,    //前回位置
+        nextPos: CLLocationCoordinate2D,    //次回位置
+        type: Mrdc)                         //手法 Normal:E_NV_MRDC_NORMAL forAutoSail:E_NV_MRDC_XTE_R
+        -> ShipPosInf
+    {
+        var bRng1 = 0.0
+        var bRng2 = 0.0
+        var dist = 0.0
+        var ret = ShipPosInf(retCode: false, co1: bRng1, co2: bRng2, dist: dist)
+
+        //前回位置チェック
+        if (!eNvCheckPos(checkPos: lastPos)) {
+            //位置が地球上にないのでエラー
+            ret = ShipPosInf(retCode: false, co1: bRng1, co2: bRng2, dist: dist)
+            return ret
+        }
+
+        //次回位置チェック
+        if (!eNvCheckPos(checkPos: nextPos)) {
+            //位置が地球上にないのでエラー
+            ret = ShipPosInf(retCode: false, co1: bRng1, co2: bRng2, dist: dist)
+            return ret
+        }
+
+        //経度座標の符号を合わせる
+        var lastLon = lastPos.longitude
+        let nextLon = nextPos.longitude
+        if (abs(lastLon - nextLon) > 180.0) {
+            if (lastLon < 0.0) {
+                lastLon += 360.0
+            } else {
+                lastLon -= 360.0
+            }
+        }
+
+        //同じ位置かチェック
+        //『前回位置』と『次回位置』の差が0.00001'以下なら同じ位置とみなす
+        if ((abs(lastPos.latitude - nextPos.latitude) <= errorRange) &&
+             (abs(lastLon - nextLon) <= errorRange)) {
+            ret = ShipPosInf(retCode: false, co1: 0.0, co2: 180.0, dist: 0.0)
+            return ret
+        }
+
+        //度単位のデータをラジアンに変換
+        let rLat0 = LocationCalculation.deg2rad(deg: lastPos.latitude)
+        let rLon0 = LocationCalculation.deg2rad(deg: lastPos.longitude)
+        let rLat1 = LocationCalculation.deg2rad(deg: nextPos.latitude)
+        let rLon1 = LocationCalculation.deg2rad(deg: nextPos.longitude)
+
+        //変緯・変経を求める
+        let aTanA = eNvConvRad(longiture: rLon1 - rLon0)    //変経計算
+        var work2 = eNvMrLat(latitude: nextPos.latitude)    //漸長緯度に変換
+        var work1 = eNvMrLat(latitude: lastPos.latitude)    //漸長緯度に変換
+        let aTanB = LocationCalculation.deg2rad(deg: work2 - work1) //変緯計算
+        //前回位置から次回位置への方位を求める
+        if ((aTanA != 0.0) || (aTanB != 0.0)) {
+            work1 = atan2(aTanA, aTanB)
+            bRng1 = work1
+        }
+
+        var bCalc = false
+        switch type {
+            case Mrdc.E_NV_MRDC_XTE_R:
+            if (abs(rLat1 - rLat0) > 0.0000001) {
+                bCalc = true
+            }
+            default:
+            if (abs((abs(bRng1) - pidDiv2)) >= (Double.pi / 180.0)) {
+                bCalc = true
+            }
+        }
+
+        //2点間の距離を求める
+        var approximation = false
+        if (bCalc) {
+            //漸長緯度航法で距離を求める
+            work2 = cos(work1)
+            dist = (rLat1 - rLat0) / work2
+        } else {
+            //針路が90度または270度の場合
+            //中分緯度航法で距離を求める
+            dist = sqrt((rLat1 - rLat0) * (rLat1 - rLat0) + cos(rLat0) * cos(rLat0) *
+                        eNvConvRad(longiture: rLon1 - rLon0) * eNvConvRad(longiture: rLon1 - rLon0))
+            approximation = true
+            //手法によってずれ量を変える
+            var dist01: Double
+            switch type {
+                case Mrdc.E_NV_MRDC_XTE_R:
+                dist01 = 0.00000011
+                default:
+                //0.11度ずれた緯度の質を求める
+                dist01 = (tan(LocationCalculation.deg2rad(deg: 0.11)) * abs(LocationCalculation.rad2deg(rad: dist) * deg2NM)) / 60.0
+            }
+            let nextPosTmp = CLLocationCoordinate2D(latitude: (nextPos.latitude + dist01), longitude: nextPos.longitude)
+            let shipInf = eNvMrdc(lastPos: lastPos, nextPos: nextPosTmp, type: type)
+            if (!shipInf.retCode) {
+                ret = ShipPosInf(retCode: false, co1: 0.0, co2: 180.0, dist: 0.0)
+                return ret
+            }
+            dist = shipInf.dist
+        }
+        bRng1 = eNvConvDeg(dDeg: LocationCalculation.rad2deg(rad: bRng1))
+        bRng2 = eNvConvDeg(dDeg: bRng1 + 180.0)
+        if (!approximation) {
+            dist = LocationCalculation.rad2deg(rad: dist) * deg2NM
+        }
+        dist = abs(dist)
+        return ShipPosInf(retCode: true, co1: bRng1, co2: bRng2, dist: dist)
+    }
+
+    /**
+     * 等角航法での距離
+     *
+     * build/src/ENv/ENv.cpp ENvMrdc移植
+     */
+    static func distance2(
+        lastPos: CLLocationCoordinate2D,    //前回位置
+        nextPos: CLLocationCoordinate2D,    //次回位置
+        type: Mrdc)                         //手法 Normal:E_NV_MRDC_NORMAL forAutoSail:E_NV_MRDC_XTE_R
+            -> DistanceInf
+    {
+        var bRng1 = 0.0
+        var dist = 0.0
+        var ret = DistanceInf(retCode: false, dist: dist)
+
+        //前回位置チェック
+        if (!eNvCheckPos(checkPos: lastPos)) {
+            //位置が地球上にないのでエラー
+            ret = DistanceInf(retCode: false, dist: dist)
+            return ret
+        }
+
+        //次回位置チェック
+        if (!eNvCheckPos(checkPos: nextPos)) {
+            //位置が地球上にないのでエラー
+            ret = DistanceInf(retCode: false, dist: dist)
+            return ret
+        }
+
+        //経度座標の符号を合わせる
+        var lastLon = lastPos.longitude
+        let nextLon = nextPos.longitude
+        if (abs(lastLon - nextLon) > 180.0) {
+            if (lastLon < 0.0) {
+                lastLon += 360
+            } else {
+                lastLon -= 360
+            }
+        }
+
+        //同じ位置かチェック
+        //『前回位置』と『次回位置』の差が0.00001'以下なら同じ位置とみなす
+        if ((abs(lastPos.latitude - nextPos.latitude) <= errorRange) &&
+             (abs(lastLon - nextLon) <= errorRange)) {
+            ret = DistanceInf(retCode: false,  dist: dist)
+            return ret
+        }
+
+        //度単位のデータをラジアンに変換
+        let rLat0 = LocationCalculation.deg2rad(deg: lastPos.latitude)
+        let rLon0 = LocationCalculation.deg2rad(deg: lastPos.longitude)
+        let rLat1 = LocationCalculation.deg2rad(deg: nextPos.latitude)
+        let rLon1 = LocationCalculation.deg2rad(deg: nextPos.longitude)
+
+        //変緯・変経を求める
+        let aTanA = eNvConvRad(longiture: rLon1 - rLon0)    //変経計算
+        var work2 = eNvMrLat(latitude: nextPos.latitude)    //漸長緯度に変換
+        var work1 = eNvMrLat(latitude: lastPos.latitude)    //漸長緯度に変換
+        let aTanB = LocationCalculation.deg2rad(deg: work2 - work1) //変緯計算
+        //前回位置から次回位置への方位を求める
+        if ((aTanA != 0.0) || (aTanB != 0.0)) {
+            work1 = atan2(aTanA, aTanB)
+            bRng1 = work1
+        }
+
+        var bCalc = false
+        switch type {
+            case Mrdc.E_NV_MRDC_XTE_R:
+            if (abs(rLat1 - rLat0) > 0.0000001) {
+                bCalc = true
+            }
+            default:
+            if (abs((abs(bRng1) - pidDiv2)) >= (Double.pi / 180.0)) {
+                bCalc = true
+            }
+        }
+
+        //2点間の距離を求める
+        var approximation = false
+        if (bCalc) {
+            //漸長緯度航法で距離を求める
+            work2 = cos(work1)
+            dist = (rLat1 - rLat0) / work2
+        } else {
+            //針路が90度または270度の場合
+            //中分緯度航法で距離を求める
+            dist = sqrt((rLat1 - rLat0) * (rLat1 - rLat0) + cos(rLat0) * cos(rLat0) *
+                        eNvConvRad(longiture: rLon1 - rLon0) * eNvConvRad(longiture: rLon1 - rLon0))
+            approximation = true
+            //手法によってずれ量を変える
+            var dist01: Double
+            switch type {
+                case Mrdc.E_NV_MRDC_XTE_R:
+                dist01 = 0.00000011
+                default:
+                //0.11度ずれた緯度の質を求める
+                dist01 = (tan(LocationCalculation.deg2rad(deg: 0.11)) * abs(LocationCalculation.rad2deg(rad: dist) * deg2NM)) / 60.0
+            }
+            let nextPosTmp = CLLocationCoordinate2D(latitude: (nextPos.latitude + dist01), longitude: nextPos.longitude)
+            let shipInf = eNvMrdc(lastPos: lastPos, nextPos: nextPosTmp, type: type)
+            if (!shipInf.retCode) {
+                ret = DistanceInf(retCode: false, dist: 0.0)
+                return ret
+            }
+            dist = shipInf.dist
+        }
+        if (!approximation) {
+            dist = LocationCalculation.rad2deg(rad: dist) * deg2NM
+        }
+        dist = abs(dist)
+        print( debug: "dist:\(dist)" )
+        return DistanceInf(retCode: true, dist: dist)
+    }
+
+    /**
+     * 方位計算
+     *
+     * build/src/ENv/ENv.cpp ENvMrdc移植
+     */
+    static func bearing(
+        lastPos: CLLocationCoordinate2D,       //前回位置
+        nextPos: CLLocationCoordinate2D)       //次回位置
+            -> BearingInf
+    {
+        var bRng1 = 0.0
+        var bRng2 = 0.0
+        var ret = BearingInf(retCode: false, co1: bRng1, co2: bRng2)
+
+        //前回位置チェック
+        if (!eNvCheckPos(checkPos: lastPos)) {
+            //位置が地球上にないのでエラー
+            let ret = BearingInf(retCode: false, co1: 0.0, co2: 0.0)
+            return ret
+        }
+        //次回位置チェック
+        if (!eNvCheckPos(checkPos: nextPos)) {
+            //位置が地球上にないのでエラー
+            let ret = BearingInf(retCode: false, co1: 0.0, co2: 0.0)
+            return ret
+        }
+
+        //経度座標の符号を合わせる
+        var lastLon = lastPos.longitude
+        let nextLon = nextPos.longitude
+        if (abs(lastLon - nextLon) > 180.0) {
+            if (lastLon < 0.0) {
+                lastLon += 360
+            } else {
+                lastLon -= 360
+            }
+        }
+
+        //同じ位置かチェック
+        //『前回位置』と『次回位置』の差が0.00001'以下なら同じ位置とみなす
+        if ((abs(lastPos.latitude - nextPos.latitude) <= errorRange) &&
+             (abs(lastLon - nextLon) <= errorRange)) {
+            ret = BearingInf(retCode: false, co1: 0.0, co2: 180.0)
+            return ret
+        }
+
+        //度単位のデータをラジアンに変換
+        let rLon0 = LocationCalculation.deg2rad(deg: lastPos.longitude)
+        let rLon1 = LocationCalculation.deg2rad(deg: nextPos.longitude)
+
+        //変緯・変経を求める
+        let aTanA = eNvConvRad(longiture: rLon1 - rLon0)    //変経計算
+        let work2 = eNvMrLat(latitude: nextPos.latitude)    //漸長緯度に変換
+        let work1 = eNvMrLat(latitude: lastPos.latitude)    //漸長緯度に変換
+        let aTanB = deg2rad(deg: work2 - work1) //変緯計算
+
+        //前回位置から次回位置への方位を求める
+        if ((aTanA != 0.0) || (aTanB != 0.0)) {
+            bRng1 = atan2(aTanA, aTanB)
+        } else {
+            bRng1 = 0.0
+        }
+
+        bRng1 = eNvConvDeg(dDeg: LocationCalculation.rad2deg(rad: bRng1))
+        bRng2 = eNvConvDeg(dDeg: bRng1 + 180.0)
+
+        return BearingInf(retCode: true, co1: bRng1, co2: bRng2)
+    }
+
+    /**
+     * 位置データチェック
+     */
+    static func eNvCheckPos(
+        checkPos: CLLocationCoordinate2D) -> Bool
+    {
+        var check = false
+        if (checkPos.latitude <= 90.0 &&
+            checkPos.latitude >= -90.0 &&
+            checkPos.longitude <= 180.0 &&
+            checkPos.longitude >= -180.0) {
+            check = true
+        }
+        return check
+    }
+
+    /**
+     * ラジアンデータ変換
+     * 引数が2πより大きいか-2πより小さいとき、2π〜-2πになるように丸める
+     */
+    static func eNvConvRad(longiture: Double) -> Double {
+        var lon: Double
+        if (longiture <= -Double.pi) {
+            lon = longiture + Double.pi * 2.0
+        } else if (longiture > Double.pi) {
+            lon = longiture - Double.pi * 2.0
+        } else {
+            lon = longiture
+        }
+        return lon
+    }
+
+    /**
+     * 漸長緯度計算
+     * 指定緯度の漸長緯度を求める
+     */
+    static func eNvMrLat(latitude: Double) -> Double {   // ENvMrLat
+        let rLat = abs(latitude * Double.pi / 180)
+        let work1 = log(tan(rad45 + rLat / 2.0))
+        let work2 = pow(eEccentricity, 2.0) * sin(rLat)
+        let work3 = pow(eEccentricity, 4.0) * pow(sin(rLat), 3.0) / 3.0
+        let mrLat = work1 - (work2 + work3)
+
+        var lat: Double
+        if (latitude < 0.0) {
+            lat = mrLat * -1 * rDeg
+        } else {
+            lat = abs(mrLat) * rDeg
+        }
+        return lat
+    }
+
+    /**
+     * 度データ変換
+     * ±の度データを+0〜360度のデータに変換する
+     *
+     * build/src/ENv/ENv.cpp ENvConvDeg
+     */
+    static func eNvConvDeg(
+        dDeg: Double
+    ) -> Double {
+        var deg = dDeg
+
+        if (deg >= 360.0) {
+            //360度以上なら360度を減算
+            deg -= 360.0
+        }
+
+        if (deg < 0.0) {
+            //0度より小さいなら360度を加算
+            deg += 360.0
+        }
+
+        if (deg == 360.0) {
+            deg = 0.0
+        }
+
+        return deg
+    }
+
+    /**
+     * 等角航法での推測位置計算
+     * 等角航法で始点座標とその方位から任意の距離における位置座標を求める
+     *
+     * build/src/ENv/ENv.cpp ENvMrnp移植
+     */
+     static func eNvMrnp(
+        startPos: CLLocationCoordinate2D,
+        course: Double,
+        distance: Double
+    ) -> CLLocationCoordinate2D { // ENvMrnp
+        var drPos = CLLocationCoordinate2D(latitude: 0.0, longitude: 0.0)
+        if (!LocationCalculation.checkPosition(pos: startPos)) {
+            return drPos
+        }
+
+        let rangeCourse = LocationCalculation.rangeDegree(degree: course)
+        drPos.latitude = startPos.latitude + distance * cos(rangeCourse * Double.pi / 180.0) / 60.0
+        if ((abs(rangeCourse - 90.0) >= (0.1 + brg)) && (abs(rangeCourse - 270.0) >= (0.1 + brg))) {
+            drPos.longitude = startPos.longitude + (eNvMrLat(latitude: drPos.latitude) - eNvMrLat(latitude: startPos.latitude)) * tan(rangeCourse * Double.pi / 180.0)
+        } else {
+            let courseEx: Double
+            if (abs(rangeCourse - 270.0) >= (0.1 + brg)) {
+                courseEx = 90.11
+            } else {
+                courseEx = 270.11
+            }
+
+            let drPosEx = eNvMrnp(startPos: startPos, course: courseEx, distance: distance)
+            drPos.longitude = drPosEx.longitude
+        }
+
+        if (180.0 < drPos.longitude) {
+            drPos.longitude -= 360.0
+        }
+        if (drPos.longitude < -180.0) {
+            drPos.longitude += 360.0
+        }
+
+        return drPos
+    }
+}

Seilassist/Sailassist/Login/LoginView.swift

@@ -55,7 +55,7 @@ struct LoginView: View {
                 case .InputIdPassword:
                     InputIdPassWordView(viewMode: $viewMode, param: $loginViewParam)
                 case .InputUserName:
-                    InputUserNameView(isLogin: $isLogin, param: $loginViewParam)
+                    InputUserNameView(isLogin: $isLogin, param: $loginViewParam, viewMode: $viewMode)
                 }
                 
                 Spacer()

Seilassist/Sailassist/Login/View/InputIdPassWordView.swift

@@ -11,6 +11,8 @@ import Combine
 struct InputIdPassWordView: View {
     @Binding var viewMode : LoginViewMode
     @Binding var param : LoginViewParam
+    @State private var isUserNmaeEmpty = false
+    @State private var isIdPassWordEmpty = false
 
     let itemHPadding: Double = 16
     let dialogBottomPadding: Double = 32
@@ -74,10 +76,11 @@ struct InputIdPassWordView: View {
                 .frame(height: 40)
                 
             Button(action: {
-                let sessionLogin = SessionLogin.OnlyOne
-                let login = ReqLogin(Id: param.shipId, Password: param.password)
-                sessionLogin.RequestLogin(login)
+                if param.shipId.isEmpty || param.password.isEmpty {
+                    isIdPassWordEmpty = true
+                } else {
                     viewMode = .InputUserName
+                }
             }, label: {
                 Text("Sign In")
                     .frame(height: 60)
@@ -85,6 +88,11 @@ struct InputIdPassWordView: View {
                     .foregroundColor(.buttonText)
                     .background(.primaryActiveIcon)
             })
+            .alert(isPresented: $isIdPassWordEmpty, content: {
+                Alert(title: Text("error"),
+                      message: Text("Ship Id or Password not entered.")
+                )
+            })
         }
         .padding(EdgeInsets(top: 26, leading: 20, bottom: 40, trailing: 20))
         .background(ColorSet.BackgroundSecondary.color)

Seilassist/Sailassist/Login/View/InputUserNameView.swift

@@ -8,17 +8,25 @@
 import SwiftUI
 
 struct InputUserNameView: View {
+    @ObservedObject var sessionLogin: SessionLogin = SessionLogin()
     @Binding var isLogin: Bool
     @Binding var param: LoginViewParam
+    @Binding var viewMode : LoginViewMode
+    @State private var isAlert = false
+    @State private var alertType: AlertType = .userNameEmpty
     let itemHPadding: Double = 16
     let dialogBottomPadding: Double = 32
     let textFieldHeight: Double = 40
     let inputAreaHeight: Double = 150
     let dialogHeight: CGFloat = 250
     let dialogWidth = UIScreen.main.bounds.width - 32
-    var body: some View {
 
+    enum AlertType {
+        case userNameEmpty
+        case loginFailure
+    }
 
+    var body: some View {
         HStack {
             Spacer()
                 .frame(width: itemHPadding)
@@ -57,10 +65,18 @@ struct InputUserNameView: View {
                 Spacer()
 
                 Button(action: {
-                    // TODO: API通信 ログイン認証処理
-                    print("signin: id(\(param.shipId)), pass(\(param.password)), name(\(param.userName))")
-                    isLogin = true
-                    Preferences.lastLoginDate_Int64 = DateTextLib.Date2UnixTime(date: Date())
+                    if param.userName.isEmpty {
+                        isAlert = true
+                        alertType = .userNameEmpty
+                    } else {
+                        //TODO: API通信 ログイン認証処理
+                        print(debug: "signin: id(\(param.shipId)), pass(\(param.password)), name(\(param.userName))")
+                        isAlert = false
+//                        param.shipId = "jrcetest01@gmail.com"
+//                        param.password = "JRCEtest01_"
+                        let login = ReqLogin(Id: param.shipId, Password: param.password)
+                        sessionLogin.RequestLogin(login, completion: responseLogin)
+                    }
                 }, label: {
                     Text("Sign In")
                         .frame(height: 50)
@@ -68,7 +84,20 @@ struct InputUserNameView: View {
                         .foregroundColor(ColorSet.ButtonText.color)
                         .background(ColorSet.PrimaryActiveIcon.color)
                 })
+                .alert(isPresented: $isAlert) {
+                    switch alertType {
+                    case .userNameEmpty:
+                        return Alert(title: Text("error"),
+                                     message: Text("User Nmae not entered.")
+                        )
 
+                    case .loginFailure:
+                        return Alert(title: Text("error"),
+                                     message: Text("Login failure."),
+                                     dismissButton: .default(Text("OK"), action: {viewMode = .SelectType})
+                        )
+                    }
+                }
                 Spacer()
                     .frame(height: dialogBottomPadding)
             }
@@ -79,10 +108,28 @@ struct InputUserNameView: View {
         .frame(width: dialogWidth, height: dialogHeight)
         .background(ColorSet.BackgroundSecondary.color)
     }
+
+    func responseLogin(result: Result<Data, APIError>) {
+        print(debug: "calld")
+        switch result {
+        case .success(let resultData):
+            let jsonstr = String(data: resultData, encoding: .utf8)!
+            Preferences.ShipId = param.shipId
+            Preferences.ShipPassword = param.password
+            Preferences.lastLoginDate_Int64 = DateTextLib.Date2UnixTime(date: Date())
+            isLogin = true
+            isAlert = false
+        case .failure(let errorCode):
+            param.shipId = ""
+            param.password = ""
+            isLogin = false
+            isAlert = true
+            alertType = .loginFailure
+            break
+        }
+    }
 }
 
 #Preview {
-    InputUserNameView(isLogin: .constant(false), param: .constant(LoginViewParam()))
-
-
+    InputUserNameView(isLogin: .constant(false), param: .constant(LoginViewParam()), viewMode: .constant(.InputIdPassword))
 }

Seilassist/Sailassist/Preferences/Preferences.swift

@@ -23,8 +23,12 @@ class Preferences{
         }
     }
     
-    @AppStorage("KEY") static var hogehoge: String = ""
-    
+    @AppStorage(wrappedValue:"", PreferencesKey.TypeString.ShipId.rawValue) static var ShipId: String
+    @AppStorage(wrappedValue:"", PreferencesKey.TypeString.ShipPassword.rawValue) static var ShipPassword: String
+    @AppStorage(wrappedValue:"", PreferencesKey.TypeString.Mmsi.rawValue) static var Mmsi: String
+    @AppStorage(wrappedValue:"", PreferencesKey.TypeString.ShipName.rawValue) static var ShipName: String
+    @AppStorage(wrappedValue:"", PreferencesKey.TypeString.GroupName.rawValue) static var GroupName: String
+    @AppStorage(wrappedValue:"", PreferencesKey.TypeString.UserName.rawValue) static var UserName: String
 //    func getPreferences(key)
 }
 

Seilassist/Sailassist/ServerSession/SessionLogin.swift

@@ -5,17 +5,15 @@
 //  Created by 三浦薫巳 on 2023/10/26.
 //
 
-import WebKit
+import Foundation
+import SwiftUI
 
-class SessionLogin : NSObject {
+class SessionLogin : ObservableObject {
+    @Published var status = false
     // シングルトン宣言
     static let OnlyOne = SessionLogin()
 
     private var serverSession = ServerSession()
-    override init() {
-        super.init()
-    }
-
     private var Calling : Bool = false      // 通信中
 
     /**
@@ -23,7 +21,7 @@ class SessionLogin : NSObject {
      *  - Parameters:
      *    - login: ログイン情報
      */
-    func RequestLogin(_ login : ReqLogin) {
+    func RequestLogin(_ login : ReqLogin, completion: @escaping ((Result<Data, APIError>)) -> Void) {
         print(debug: "calld")
         if Calling {
             return
@@ -38,27 +36,11 @@ class SessionLogin : NSObject {
         }
 
         if let postdata = serverSession.toJSON(login) {
-            serverSession.postJson(req_url, postdata, completion: serverResponse)
+            serverSession.postJson(req_url, postdata, completion: completion)
         }
         else {
             Calling = false
             return
         }
     }
-
-    func serverResponse(result: Result<Data, APIError>) {
-        print(debug: "calld")
-        switch result {
-        case .success(let resultData):
-            let jsonstr = String(data: resultData, encoding: .utf8)!
-            if jsonstr == "Completed.\n\n" {
-                Calling = false
-            } else {
-                Calling = false
-            }
-        case .failure(let errorCode):
-            print(errorCode)
-            break
-        }
-    }
 }