450 lines
15 KiB
JavaScript
450 lines
15 KiB
JavaScript
L.BRouter = L.Class.extend({
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statics: {
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// NOTE: the routing API used here is not public!
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// /brouter?lonlats=1.1,1.2|2.1,2.2|3.1,3.2|4.1,4.2&nogos=-1.1,-1.2,1|-2.1,-2.2,2&profile=shortest&alternativeidx=1&format=kml
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URL_TEMPLATE:
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'/brouter?lonlats={lonlats}&nogos={nogos}&polylines={polylines}&polygons={polygons}&profile={profile}&alternativeidx={alternativeidx}&format={format}',
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URL_PROFILE_UPLOAD: BR.conf.host + '/brouter/profile',
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PRECISION: 6,
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NUMBER_SEPARATOR: ',',
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GROUP_SEPARATOR: '|',
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ABORTED_ERROR: 'aborted'
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},
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options: {},
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initialize: function(options) {
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L.setOptions(this, options);
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this.queue = async.queue(
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L.bind(function(task, callback) {
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this.getRoute(task.segment, callback);
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}, this),
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1
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);
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// patch to call callbacks on kill for cleanup (loadingTrailer)
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this.queue.kill = function() {
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var aborted = this.tasks;
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this.drain = null;
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this.tasks = [];
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aborted.forEach(function(task) {
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task.callback(L.BRouter.ABORTED_ERROR);
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});
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};
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},
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setOptions: function(options) {
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L.setOptions(this, options);
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},
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getUrlParams: function(latLngs, format) {
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params = {};
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if (this._getLonLatsString(latLngs) != null) params.lonlats = this._getLonLatsString(latLngs);
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if (this.options.nogos && this._getNogosString(this.options.nogos).length > 0)
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params.nogos = this._getNogosString(this.options.nogos);
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if (this.options.polylines && this._getNogosPolylinesString(this.options.polylines).length > 0)
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params.polylines = this._getNogosPolylinesString(this.options.polylines);
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if (this.options.polygons && this._getNogosPolygonsString(this.options.polygons).length > 0)
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params.polygons = this._getNogosPolygonsString(this.options.polygons);
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if (this.options.profile != null) params.profile = this.options.profile;
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params.alternativeidx = this.options.alternative;
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if (format != null) {
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params.format = format;
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} else {
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// do not put values in URL if this is the default value (format===null)
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if (params.profile === BR.conf.profiles[0]) delete params.profile;
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if (params.alternativeidx == 0) delete params.alternativeidx;
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// don't add custom profile, as these are only stored temporarily
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if (params.profile && params.profile.substring(0, 7) === 'custom_') {
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delete params.profile;
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}
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}
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return params;
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},
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parseUrlParams: function(params) {
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var opts = {};
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if (params.lonlats) {
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opts.lonlats = this._parseLonLats(params.lonlats);
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}
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if (params.nogos) {
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opts.nogos = this._parseNogos(params.nogos);
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}
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if (params.polylines) {
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opts.polylines = this._parseNogosPolylines(params.polylines);
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}
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if (params.polygons) {
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opts.polygons = this._parseNogosPolygons(params.polygons);
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}
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if (params.alternativeidx) {
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opts.alternative = params.alternativeidx;
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}
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if (params.profile) {
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opts.profile = params.profile;
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}
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return opts;
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},
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getUrl: function(latLngs, format, trackname, exportWaypoints) {
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var urlParams = this.getUrlParams(latLngs, format);
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var args = [];
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if (urlParams.lonlats != null && urlParams.lonlats.length > 0)
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args.push(L.Util.template('lonlats={lonlats}', urlParams));
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if (urlParams.nogos != null) args.push(L.Util.template('nogos={nogos}', urlParams));
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if (urlParams.polylines != null) args.push(L.Util.template('polylines={polylines}', urlParams));
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if (urlParams.polygons != null) args.push(L.Util.template('polygons={polygons}', urlParams));
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if (urlParams.profile != null) args.push(L.Util.template('profile={profile}', urlParams));
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if (urlParams.alternativeidx != null) args.push(L.Util.template('alternativeidx={alternativeidx}', urlParams));
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if (urlParams.format != null) args.push(L.Util.template('format={format}', urlParams));
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if (trackname)
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args.push(
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L.Util.template('trackname={trackname}', {
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trackname: trackname
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})
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);
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if (exportWaypoints) args.push('exportWaypoints=1');
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var prepend_host = format != null;
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return (prepend_host ? BR.conf.host : '') + '/brouter?' + args.join('&');
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},
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getRoute: function(latLngs, cb) {
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var url = this.getUrl(latLngs, 'geojson'),
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xhr = new XMLHttpRequest();
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if (!url) {
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return cb(new Error(i18next.t('warning.cannot-get-route')));
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}
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xhr.open('GET', url, true);
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xhr.onload = L.bind(this._handleRouteResponse, this, xhr, cb);
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xhr.onerror = L.bind(
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function(xhr, cb) {
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cb(BR.Util.getError(xhr));
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},
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this,
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xhr,
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cb
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);
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xhr.send();
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},
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_handleRouteResponse: function(xhr, cb) {
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var layer, geojson;
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if (
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xhr.status === 200 &&
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xhr.responseText &&
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// application error when not GeoJSON format (text/plain for errors)
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xhr.getResponseHeader('Content-Type').split(';')[0] === 'application/vnd.geo+json'
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) {
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// leaflet.spin
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//gpxLayer.fire('data:loaded');
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try {
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geojson = JSON.parse(xhr.responseText);
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layer = this._assignFeatures(L.geoJSON(geojson).getLayers()[0]);
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return cb(null, layer);
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} catch (e) {
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console.error(e, xhr.responseText);
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return cb(e);
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}
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} else {
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cb(BR.Util.getError(xhr));
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}
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},
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getRouteSegment: function(l1, l2, cb) {
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this.queue.push({ segment: [l1, l2] }, cb);
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},
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uploadProfile: function(profileId, profileText, cb) {
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var url = L.BRouter.URL_PROFILE_UPLOAD;
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xhr = new XMLHttpRequest();
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// reuse existing profile file
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if (profileId) {
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url += '/' + profileId;
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}
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xhr.open('POST', url, true);
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xhr.onload = L.bind(this._handleProfileResponse, this, xhr, cb);
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xhr.onerror = function(evt) {
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var xhr = this;
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cb(i18next.t('warning.upload-error', { error: xhr.statusText }));
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};
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// send profile text only, as text/plain;charset=UTF-8
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xhr.send(profileText);
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},
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_assignFeatures: function(segment) {
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if (segment.feature.properties.messages) {
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const featureMessages = segment.feature.properties.messages,
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segmentLatLngs = segment.getLatLngs(),
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segmentLength = segmentLatLngs.length;
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var featureSegmentIndex = 0;
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for (var mi = 1; mi < featureMessages.length; mi++) {
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const featureLatLng = this._getFeatureLatLng(featureMessages[mi]);
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for (var fi = featureSegmentIndex; fi < segmentLength; fi++) {
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const segmentLatLng = segmentLatLngs[fi],
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featureMessage = featureMessages[mi];
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segmentLatLng.feature = this._getFeature(featureMessage);
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segmentLatLng.message = featureMessage;
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if (featureLatLng.equals(segmentLatLngs[fi])) {
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featureSegmentIndex = fi + 1;
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break;
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}
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}
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}
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}
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return segment;
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},
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_getFeature: function(featureMessage) {
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//["Longitude", "Latitude", "Elevation", "Distance", "CostPerKm", "ElevCost", "TurnCost", "NodeCost", "InitialCost", "WayTags", "NodeTags"]
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return {
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cost: {
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perKm: parseInt(featureMessage[4]),
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elev: parseInt(featureMessage[5]),
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turn: parseInt(featureMessage[6]),
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node: parseInt(featureMessage[7]),
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initial: parseInt(featureMessage[8])
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},
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wayTags: featureMessage[9],
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nodeTags: featureMessage[10]
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};
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},
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_getFeatureLatLng: function(message) {
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var lon = message[0] / 1000000,
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lat = message[1] / 1000000;
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return L.latLng(lat, lon);
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},
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_handleProfileResponse: function(xhr, cb) {
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var response;
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if (xhr.status === 200 && xhr.responseText && xhr.responseText.length > 0) {
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response = JSON.parse(xhr.responseText);
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cb(response.error, response.profileid);
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} else {
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cb(i18next.t('warning.profile-error'));
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}
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},
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_getLonLatsString: function(latLngs) {
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var s = '';
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for (var i = 0; i < latLngs.length; i++) {
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s += this._formatLatLng(latLngs[i]);
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if (i < latLngs.length - 1) {
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s += L.BRouter.GROUP_SEPARATOR;
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}
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}
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return s;
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},
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_parseLonLats: function(s) {
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var groups,
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numbers,
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lonlats = [];
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if (!s) {
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return lonlats;
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}
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groups = s.split(L.BRouter.GROUP_SEPARATOR);
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for (var i = 0; i < groups.length; i++) {
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// lng,lat
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numbers = groups[i].split(L.BRouter.NUMBER_SEPARATOR);
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lonlats.push(L.latLng(numbers[1], numbers[0]));
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}
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return lonlats;
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},
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_getNogosString: function(nogos) {
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var s = '';
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for (var i = 0, circle; i < nogos.length; i++) {
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circle = nogos[i];
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s += this._formatLatLng(circle.getLatLng());
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s += L.BRouter.NUMBER_SEPARATOR;
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s += Math.round(circle.getRadius());
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// -1 is default nogo exclusion, it should not be passed as a URL parameter.
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if (
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circle.options.nogoWeight !== undefined &&
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circle.options.nogoWeight !== null &&
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circle.options.nogoWeight !== -1
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) {
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s += L.BRouter.NUMBER_SEPARATOR;
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s += circle.options.nogoWeight;
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}
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if (i < nogos.length - 1) {
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s += L.BRouter.GROUP_SEPARATOR;
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}
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}
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return s;
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},
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_parseNogos: function(s) {
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var groups,
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numbers,
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nogos = [];
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if (!s) {
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return nogos;
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}
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groups = s.split(L.BRouter.GROUP_SEPARATOR);
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for (var i = 0; i < groups.length; i++) {
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// lng,lat,radius(,weight)
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numbers = groups[i].split(L.BRouter.NUMBER_SEPARATOR);
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// TODO refactor: pass simple obj, create circle in NogoAreas; use shapeOptions of instance
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// [lat,lng],radius
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// Parse as a nogo circle
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var nogoOptions = { radius: numbers[2] };
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if (numbers.length > 3) {
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nogoOptions.nogoWeight = numbers[3];
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}
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nogos.push(L.circle([numbers[1], numbers[0]], nogoOptions));
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}
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return nogos;
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},
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_getNogosPolylinesString: function(nogos) {
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var s = '';
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for (var i = 0, polyline, vertices; i < nogos.length; i++) {
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polyline = nogos[i];
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vertices = polyline.getLatLngs();
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for (var j = 0; j < vertices.length; j++) {
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if (j > 0) {
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s += L.BRouter.NUMBER_SEPARATOR;
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}
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s += this._formatLatLng(vertices[j]);
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}
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// -1 is default nogo exclusion, it should not be passed as a URL parameter.
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if (
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polyline.options.nogoWeight !== undefined &&
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polyline.options.nogoWeight !== null &&
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polyline.options.nogoWeight !== -1
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) {
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s += L.BRouter.NUMBER_SEPARATOR;
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s += polyline.options.nogoWeight;
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}
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if (i < nogos.length - 1) {
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s += L.BRouter.GROUP_SEPARATOR;
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}
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}
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return s;
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},
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_parseNogosPolylines: function(s) {
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var groups,
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numbers,
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latlngs,
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nogos = [];
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groups = s.split(L.BRouter.GROUP_SEPARATOR);
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for (var i = 0; i < groups.length; i++) {
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numbers = groups[i].split(L.BRouter.NUMBER_SEPARATOR);
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if (numbers.length > 1) {
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latlngs = [];
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for (var j = 0; j < numbers.length - 1; ) {
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var lng = Number.parseFloat(numbers[j++]);
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var lat = Number.parseFloat(numbers[j++]);
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latlngs.push([lat, lng]);
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}
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var nogoWeight;
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if (j < numbers.length) {
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nogoWeight = Number.parseFloat(numbers[j++]);
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}
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nogos.push(L.polyline(latlngs, { nogoWeight: nogoWeight }));
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}
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}
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return nogos;
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},
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_getNogosPolygonsString: function(nogos) {
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var s = '';
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for (var i = 0, polygon, vertices; i < nogos.length; i++) {
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polygon = nogos[i];
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vertices = polygon.getLatLngs()[0];
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for (var j = 0; j < vertices.length; j++) {
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if (j > 0) {
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s += L.BRouter.NUMBER_SEPARATOR;
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}
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s += this._formatLatLng(vertices[j]);
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}
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// -1 is default nogo exclusion, it should not be passed as a URL parameter.
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if (
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polygon.options.nogoWeight !== undefined &&
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polygon.options.nogoWeight !== null &&
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polygon.options.nogoWeight !== -1
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) {
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s += L.BRouter.NUMBER_SEPARATOR;
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s += polygon.options.nogoWeight;
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}
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if (i < nogos.length - 1) {
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s += L.BRouter.GROUP_SEPARATOR;
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}
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}
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return s;
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},
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_parseNogosPolygons: function(s) {
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var groups,
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numbers,
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latlngs,
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nogos = [];
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groups = s.split(L.BRouter.GROUP_SEPARATOR);
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for (var i = 0; i < groups.length; i++) {
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numbers = groups[i].split(L.BRouter.NUMBER_SEPARATOR);
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if (numbers.length > 1) {
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latlngs = [];
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for (var j = 0; j < numbers.length - 1; ) {
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var lng = Number.parseFloat(numbers[j++]);
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var lat = Number.parseFloat(numbers[j++]);
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latlngs.push([lat, lng]);
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}
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var nogoWeight;
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if (j < numbers.length) {
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nogoWeight = Number.parseFloat(numbers[j++]);
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}
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nogos.push(L.polygon(latlngs, { nogoWeight: nogoWeight }));
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}
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}
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return nogos;
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},
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// formats L.LatLng object as lng,lat string
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_formatLatLng: function(latLng) {
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var s = '';
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s += L.Util.formatNum(latLng.lng || latLng[1], L.BRouter.PRECISION);
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s += L.BRouter.NUMBER_SEPARATOR;
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s += L.Util.formatNum(latLng.lat || latLng[0], L.BRouter.PRECISION);
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return s;
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}
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});
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L.bRouter = function(options) {
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return new L.BRouter(options);
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};
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