nakarte

Source code of https://map.sikmir.ru (fork)
git clone git://git.sikmir.ru/nakarte
Log | Files | Refs | LICENSE

index.js (2522B)

      1 import L from 'leaflet';
      2 
      3 import {fetch} from '~/lib/xhr-promise';
      4 
      5 function tile2quad(x, y, z) {
      6     let quad = '';
      7     for (let i = z; i > 0; i--) {
      8         let digit = 0;
      9         const mask = 1 << (i - 1);
     10         if ((x & mask) !== 0) {
     11             digit += 1;
     12         }
     13         if ((y & mask) !== 0) {
     14             digit += 2;
     15         }
     16         quad += digit;
     17     }
     18     return quad;
     19 }
     20 
     21 const BingBaseLayer = L.TileLayer.extend({
     22     getTileUrl: function (tilePoint) {
     23         const data = {
     24             quadkey: tile2quad(tilePoint.x, tilePoint.y, this._getZoomForUrl()),
     25         };
     26         return L.Util.template(this._url, L.extend(data, this.options));
     27     },
     28 });
     29 
     30 const BingBaseLayerWithDynamicUrl = BingBaseLayer.extend({
     31     initialize: function (options) {
     32         BingBaseLayer.prototype.initialize.call(this, null, options);
     33         this.layerInfoRequested = false;
     34     },
     35 
     36     onAdd: function (map) {
     37         this.loadLayerInfo();
     38         L.TileLayer.prototype.onAdd.apply(this, [map]);
     39     },
     40 
     41     _update: function () {
     42         if (this._url === null || !this._map) {
     43             return;
     44         }
     45         L.TileLayer.prototype._update.apply(this);
     46     },
     47 
     48     getLayerUrl: async function () {
     49         throw new Error('Not implemented');
     50     },
     51 
     52     loadLayerInfo: async function () {
     53         if (this.layerInfoRequested) {
     54             return;
     55         }
     56         this.layerInfoRequested = true;
     57         this._url = await this.getLayerUrl();
     58         this._update();
     59     },
     60 });
     61 
     62 const BingSatLayer = BingBaseLayerWithDynamicUrl.extend({
     63     getLayerUrl: async function () {
     64         const xhr = await fetch('https://www.bing.com/maps/style?styleid=aerial', {
     65             responseType: 'json',
     66             timeout: 5000,
     67         });
     68         return xhr.response['sources']['bing-aerial']['tiles'][0].replace(/^raster/u, 'https');
     69     },
     70 });
     71 
     72 const BingOrdnanceSurveyLayer = BingBaseLayerWithDynamicUrl.extend({
     73     options: {
     74         credentials: 'Auy875gcaw3RCFzVQSxi8Ytzw_K67r4Dw8DpGHavRZW_ciCBHLhQJAhCiXSdnzwH',
     75     },
     76 
     77     getLayerUrl: async function () {
     78         const xhr = await fetch('https://www.bing.com/maps/style?styleid=ordnancesurvey', {
     79             responseType: 'json',
     80             headers: [['accept-language', 'en-GB']],
     81             timeout: 5000,
     82         });
     83         return xhr.response['sources']['osMaps1']['tiles'][0].replace(/^raster/u, 'https');
     84     },
     85 });
     86 
     87 // eslint-disable-next-line import/no-unused-modules
     88 export {BingSatLayer, BingOrdnanceSurveyLayer, BingBaseLayerWithDynamicUrl};