maplair/dist/esm/geo/LatLng.js

JavaScript library for mobile-friendly interactive maps

import { formatNum } from "../core/Util.js";
import { LatLngBounds } from "./LatLngBounds.js";
import { EarthCRS } from "./crs/EarthCRS.js";
//#region src/geo/LatLng.js
var LatLng = class LatLng {
	constructor(lat, lng, alt) {
		if (!LatLng.validate(lat, lng, alt)) throw new Error(`Invalid LatLng object: (${lat}, ${lng})`);
		let _lat, _lng, _alt;
		if (lat instanceof LatLng) {
			_lat = lat.lat;
			_lng = lat.lng;
			_alt = lat.alt;
		} else if (Array.isArray(lat) && typeof lat[0] !== "object") {
			if (lat.length === 3) {
				_lat = lat[0];
				_lng = lat[1];
				_alt = lat[2];
			} else if (lat.length === 2) {
				_lat = lat[0];
				_lng = lat[1];
			}
		} else if (typeof lat === "object" && "lat" in lat) {
			_lat = lat.lat;
			_lng = "lng" in lat ? lat.lng : lat.lon;
			_alt = lat.alt;
		} else {
			_lat = lat;
			_lng = lng;
			_alt = alt;
		}
		this.lat = +_lat;
		this.lng = +_lng;
		if (_alt !== void 0) this.alt = +_alt;
	}
	static validate(lat, lng, alt) {
		if (lat instanceof LatLng || typeof lat === "object" && lat !== null && "lat" in lat) return true;
		else if (lat && Array.isArray(lat) && typeof lat[0] !== "object") {
			if (lat.length === 3 || lat.length === 2) return true;
			return false;
		} else if ((lat || lat === 0) && (lng || lng === 0)) return true;
		return false;
	}
	equals(obj, maxMargin) {
		if (!obj) return false;
		obj = new LatLng(obj);
		return Math.max(Math.abs(this.lat - obj.lat), Math.abs(this.lng - obj.lng)) <= (maxMargin ?? 1e-9);
	}
	toString(precision) {
		return `LatLng(${formatNum(this.lat, precision)}, ${formatNum(this.lng, precision)})`;
	}
	distanceTo(other) {
		return EarthCRS.distance(this, new LatLng(other));
	}
	wrap() {
		return EarthCRS.wrapLatLng(this);
	}
	toBounds(sizeInMeters) {
		const latAccuracy = 180 * sizeInMeters / 40075017, lngAccuracy = latAccuracy / Math.cos(Math.PI / 180 * this.lat);
		return new LatLngBounds([this.lat - latAccuracy, this.lng - lngAccuracy], [this.lat + latAccuracy, this.lng + lngAccuracy]);
	}
};
//#endregion
export { LatLng };

//# sourceMappingURL=LatLng.js.map