Added types for geodesy latlon-spherical.js

types/geodesy/geodesy-tests.ts

@@ -4,7 +4,7 @@ import {
   Dms,
   Vector3d,
   OsGridRef,
-  LatLonEllipsoidal as LatLon } from 'geodesy';
+  LatLonEllipsoidal as LatLon, LatLonSpherical } from 'geodesy';
 
 /**
  * Mgrs
@@ -115,3 +115,53 @@ OsGridRef.latLonToOsGrid(latlon);
 OsGridRef.osGridToLatLon(gridref);
 OsGridRef.osGridToLatLon(gridref, LatLon.datum.OSGB36);
 OsGridRef.parse('TG 51409 13177');
+
+/**
+ * LatLonSpherical
+ */
+const point1 = new LatLonSpherical(52.205, 0.119);
+const point2 = new LatLonSpherical(48.857, 2.351);
+
+point1.distanceTo(point2); // 404.3 km
+point1.distanceTo(point2, 6371e3); // 404.3 km
+point1.bearingTo(point2); // 156.2°
+point1.finalBearingTo(point2); // 157.9°
+point1.midpointTo(point2); // 50.5363°N, 001.2746°E
+point1.intermediatePointTo(point2, 0.25); // 51.3721°N, 000.7073°E
+point1.destinationPoint(7794, 300.7); // 51.5135°N, 000.0983°W
+point1.destinationPoint(7794, 300.7, 6371e3); // 51.5135°N, 000.0983°W
+
+const ctCurrent = new LatLonSpherical(53.2611, -0.7972);
+const ct1 = new LatLonSpherical(53.3206, -1.7297);
+const ct2 = new LatLonSpherical(53.1887,  0.1334);
+ctCurrent.crossTrackDistanceTo(ct1, ct2);  // -307.5 m
+ctCurrent.crossTrackDistanceTo(ct1, ct2, 6371e3);  // -307.5 m
+
+point1.maxLatitude(156);
+
+const rhumb1 = new LatLonSpherical(51.127, 1.338);
+const rhumb2 = new LatLonSpherical(50.964, 1.853);
+rhumb1.rhumbDistanceTo(rhumb2); // 40.31 km
+rhumb1.rhumbDistanceTo(rhumb2, 6371e3); // 40.31 km
+rhumb1.rhumbBearingTo(rhumb2); // 116.7°
+rhumb1.rhumbDestinationPoint(40300, 116.7); // 50.9642°N, 001.8530°E
+rhumb1.rhumbDestinationPoint(40300, 116.7, 6371e3); // 50.9642°N, 001.8530°E
+rhumb1.rhumbMidpointTo(rhumb2); // 51.0455°N, 001.5957°E
+
+const eq1 = new LatLonSpherical(52.205, 0.119);
+const eq2 = new LatLonSpherical(52.205, 0.119);
+eq1.equals(eq2); // true
+
+eq1.toString();
+eq1.toString('dm');
+eq1.toString('d', 0);
+
+// Static functions
+const brng1 = 108.547;
+const brng2 =  32.435;
+LatLonSpherical.intersection(point1, brng1, point2, brng2); // 50.9078°N, 004.5084°E
+LatLonSpherical.crossingParallels(point1, point2, 30);
+
+const polygon = [new LatLonSpherical(0, 0), new LatLonSpherical(1, 0), new LatLonSpherical(0, 1)];
+LatLonSpherical.areaOf(polygon); // 6.18e9 m²
+LatLonSpherical.areaOf(polygon, 6371e3); // 6.18e9 m²

types/geodesy/index.d.ts

@@ -1,6 +1,7 @@
 // Type definitions for geodesy 1.1
 // Project: https://github.com/chrisveness/geodesy
 // Definitions by: Denis Carriere <https://github.com/DenisCarriere>
+		   Gilbert Handy <https://github.com/HandyG52>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 
 export type format = 'd' | 'dm' | 'dms';
@@ -147,3 +148,27 @@ export class LatLonEllipsoidal {
     static datum: Datums;
     static ellipsoid: Ellipsoids;
 }
+
+export class LatLonSpherical {
+    lat: number;
+    lon: number;
+    constructor(lat: number, lon: number)
+    distanceTo(point: LatLonSpherical, radius?: number): number;
+    bearingTo(point: LatLonSpherical): number;
+    finalBearingTo(point: LatLonSpherical): number;
+    midpointTo(point: LatLonSpherical): number;
+    intermediatePointTo(point: LatLonSpherical, fraction: number): LatLonSpherical;
+    destinationPoint(distance: number, bearing: number, radius?: number): LatLonSpherical;
+    static intersection(point1: LatLonSpherical, bearing1: number, point2: LatLonSpherical, bearing2: number): LatLonSpherical;
+    crossTrackDistanceTo(pathStart: LatLonSpherical, pathEnd: LatLonSpherical, radius?: number): number;
+    maxLatitude(bearing: number): number;
+    static crossingParallels(point1: LatLonSpherical, point2: LatLonSpherical, latitude: number): any;
+    rhumbDistanceTo(point: LatLonSpherical, radius?: number): number;
+    rhumbBearingTo(point: LatLonSpherical): number;
+    rhumbDestinationPoint(distance: number, bearing: number, radius?: number): LatLonSpherical;
+    rhumbMidpointTo(point: LatLonSpherical): LatLonSpherical;
+    equals(point: LatLonSpherical): boolean;
+    static areaOf(polygon: LatLonSpherical[], radius?: number): number;
+    toString(format?: string, dp?: number): string;
+}
+