mirror of https://github.com/CesiumGS/cesium.git
74 lines
2.2 KiB
JavaScript
74 lines
2.2 KiB
JavaScript
import Cartesian3 from "./Cartesian3.js";
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import Check from "./Check.js";
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/**
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* Geocodes queries containing longitude and latitude coordinates and an optional height.
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* Query format: `longitude latitude (height)` with longitude/latitude in degrees and height in meters.
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*
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* @alias CartographicGeocoderService
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* @constructor
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*/
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function CartographicGeocoderService() {}
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Object.defineProperties(CartographicGeocoderService.prototype, {
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/**
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* Gets the credit to display after a geocode is performed. Typically this is used to credit
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* the geocoder service.
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* @memberof CartographicGeocoderService.prototype
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* @type {Credit|undefined}
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* @readonly
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*/
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credit: {
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get: function () {
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return undefined;
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},
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},
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});
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/**
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* @function
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*
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* @param {string} query The query to be sent to the geocoder service
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* @returns {Promise<GeocoderService.Result[]>}
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*/
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CartographicGeocoderService.prototype.geocode = function (query) {
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//>>includeStart('debug', pragmas.debug);
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Check.typeOf.string("query", query);
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//>>includeEnd('debug');
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const splitQuery = query.match(/[^\s,\n]+/g);
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if (splitQuery.length === 2 || splitQuery.length === 3) {
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let longitude = +splitQuery[0];
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let latitude = +splitQuery[1];
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const height = splitQuery.length === 3 ? +splitQuery[2] : 300.0;
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if (isNaN(longitude) && isNaN(latitude)) {
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const coordTest = /^(\d+.?\d*)([nsew])/i;
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for (let i = 0; i < splitQuery.length; ++i) {
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const splitCoord = splitQuery[i].match(coordTest);
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if (coordTest.test(splitQuery[i]) && splitCoord.length === 3) {
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if (/^[ns]/i.test(splitCoord[2])) {
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latitude = /^[n]/i.test(splitCoord[2])
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? +splitCoord[1]
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: -splitCoord[1];
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} else if (/^[ew]/i.test(splitCoord[2])) {
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longitude = /^[e]/i.test(splitCoord[2])
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? +splitCoord[1]
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: -splitCoord[1];
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}
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}
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}
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}
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if (!isNaN(longitude) && !isNaN(latitude) && !isNaN(height)) {
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const result = {
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displayName: query,
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destination: Cartesian3.fromDegrees(longitude, latitude, height),
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};
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return Promise.resolve([result]);
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}
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}
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return Promise.resolve([]);
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};
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export default CartographicGeocoderService;
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