maplair/dist/esm/geo/crs/EarthCRS.js

JavaScript library for mobile-friendly interactive maps

import { CRS } from "./CRS.js";
//#region src/geo/crs/EarthCRS.js
var EarthCRS = class extends CRS {
	static wrapLng = [-180, 180];
	static R = 6371e3;
	static distance(latlng1, latlng2) {
		const rad = Math.PI / 180, lat1 = latlng1.lat * rad, lat2 = latlng2.lat * rad, sinDLat = Math.sin((latlng2.lat - latlng1.lat) * rad / 2), sinDLon = Math.sin((latlng2.lng - latlng1.lng) * rad / 2), a = sinDLat * sinDLat + Math.cos(lat1) * Math.cos(lat2) * sinDLon * sinDLon, c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1 - a));
		return this.R * c;
	}
};
//#endregion
export { EarthCRS };

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