maplair/dist/esm/geo/LatLngBounds.js

JavaScript library for mobile-friendly interactive maps

import { LatLng } from "./LatLng.js";
//#region src/geo/LatLngBounds.js
var LatLngBounds = class LatLngBounds {
	constructor(corner1, corner2) {
		if (!corner1) return;
		if (corner1 instanceof LatLngBounds) {
			if (corner1.isValid()) {
				this._southWest = new LatLng(corner1._southWest);
				this._northEast = new LatLng(corner1._northEast);
			}
			return;
		}
		const latlngs = corner2 ? [corner1, corner2] : corner1;
		for (const latlng of latlngs) this.extend(latlng);
	}
	extend(obj) {
		const sw = this._southWest, ne = this._northEast;
		let sw2, ne2;
		if (obj instanceof LatLng) {
			sw2 = obj;
			ne2 = obj;
		} else if (obj instanceof LatLngBounds) {
			sw2 = obj._southWest;
			ne2 = obj._northEast;
			if (!sw2 || !ne2) return this;
		} else {
			if (!obj) return this;
			if (LatLng.validate(obj)) return this.extend(new LatLng(obj));
			return this.extend(new LatLngBounds(obj));
		}
		if (!sw && !ne) {
			this._southWest = new LatLng(sw2.lat, sw2.lng);
			this._northEast = new LatLng(ne2.lat, ne2.lng);
		} else {
			sw.lat = Math.min(sw2.lat, sw.lat);
			sw.lng = Math.min(sw2.lng, sw.lng);
			ne.lat = Math.max(ne2.lat, ne.lat);
			ne.lng = Math.max(ne2.lng, ne.lng);
		}
		return this;
	}
	pad(bufferRatio) {
		const sw = this._southWest, ne = this._northEast, heightBuffer = Math.abs(sw.lat - ne.lat) * bufferRatio, widthBuffer = Math.abs(sw.lng - ne.lng) * bufferRatio;
		return new LatLngBounds(new LatLng(sw.lat - heightBuffer, sw.lng - widthBuffer), new LatLng(ne.lat + heightBuffer, ne.lng + widthBuffer));
	}
	getCenter() {
		return new LatLng((this._southWest.lat + this._northEast.lat) / 2, (this._southWest.lng + this._northEast.lng) / 2);
	}
	getSouthWest() {
		return this._southWest;
	}
	getNorthEast() {
		return this._northEast;
	}
	getNorthWest() {
		return new LatLng(this.getNorth(), this.getWest());
	}
	getSouthEast() {
		return new LatLng(this.getSouth(), this.getEast());
	}
	getWest() {
		return this._southWest.lng;
	}
	getSouth() {
		return this._southWest.lat;
	}
	getEast() {
		return this._northEast.lng;
	}
	getNorth() {
		return this._northEast.lat;
	}
	contains(obj) {
		if (LatLng.validate(obj)) obj = new LatLng(obj);
		else obj = new LatLngBounds(obj);
		const sw = this._southWest, ne = this._northEast;
		let sw2, ne2;
		if (obj instanceof LatLngBounds) {
			sw2 = obj.getSouthWest();
			ne2 = obj.getNorthEast();
		} else sw2 = ne2 = obj;
		return sw2.lat >= sw.lat && ne2.lat <= ne.lat && sw2.lng >= sw.lng && ne2.lng <= ne.lng;
	}
	intersects(bounds) {
		bounds = new LatLngBounds(bounds);
		const sw = this._southWest, ne = this._northEast, sw2 = bounds.getSouthWest(), ne2 = bounds.getNorthEast(), latIntersects = ne2.lat >= sw.lat && sw2.lat <= ne.lat, lngIntersects = ne2.lng >= sw.lng && sw2.lng <= ne.lng;
		return latIntersects && lngIntersects;
	}
	overlaps(bounds) {
		bounds = new LatLngBounds(bounds);
		const sw = this._southWest, ne = this._northEast, sw2 = bounds.getSouthWest(), ne2 = bounds.getNorthEast(), latOverlaps = ne2.lat > sw.lat && sw2.lat < ne.lat, lngOverlaps = ne2.lng > sw.lng && sw2.lng < ne.lng;
		return latOverlaps && lngOverlaps;
	}
	toBBoxString() {
		return [
			this.getWest(),
			this.getSouth(),
			this.getEast(),
			this.getNorth()
		].join(",");
	}
	equals(bounds, maxMargin) {
		if (!bounds) return false;
		bounds = new LatLngBounds(bounds);
		return this._southWest.equals(bounds.getSouthWest(), maxMargin) && this._northEast.equals(bounds.getNorthEast(), maxMargin);
	}
	isValid() {
		return !!(this._southWest && this._northEast);
	}
};
//#endregion
export { LatLngBounds };

//# sourceMappingURL=LatLngBounds.js.map