fde871019917d671f699eb154619412dd74f191b
[rails.git] / app / assets / javascripts / routing_engines / osrm.js
1 // OSRM car engine
2 // *** need to clear hints at some point
3
4 OSRMEngine = function(vehicleName, baseURL, locale) {
5     this.vehicleName = vehicleName;
6     this.baseURL = baseURL;
7     this.locale = locale;
8     if (!locale)
9         this.locale = "en";
10 };
11
12 OSRMEngine.prototype.createConfig = function() {
13     var that = this;
14     return {
15                 name: "javascripts.directions.engines.osrm_"+this.vehicleName.toLowerCase(),
16                 creditline: 'Directions courtesy of <a href="http://project-osrm.org/" target="_blank">OSRM</a>',
17                 draggable: true,
18                 _hints: {},
19                 getRoute: function(isFinal,points) {
20                         var url=that.baseURL+"?z=14&output=json";
21                         for (var i=0; i<points.length; i++) {
22                                 var pair=points[i].join(',');
23                                 url+="&loc="+pair;
24                                 if (this._hints[pair]) url+= "&hint="+this._hints[pair];
25                         }
26                         if (isFinal) url+="&instructions=true";
27                         this.requestCORS(url);
28                 },
29                 gotRoute: function(router,data) {
30                         if (data.status==207) {
31                                 return false;
32                         }
33                         // Draw polyline
34                         var line=L.PolylineUtil.decode(data.route_geometry);
35                         for (i=0; i<line.length; i++) { line[i].lat/=10; line[i].lng/=10; }
36                         router.setPolyline(line);
37                         // *** store hints
38                         // Assemble instructions
39                         var steps=[];
40                         for (i=0; i<data.route_instructions.length; i++) {
41                                 var s=data.route_instructions[i];
42                                 var instCodes=s[0].split('-');
43                                 var instText="<b>"+(i+1)+".</b> ";
44                                 instText+=TURN_INSTRUCTIONS[instCodes[0]];
45                                 if (instCodes[1]) { instText+="exit "+instCodes[1]+" "; }
46                                 if (instCodes[0]!=15) { instText+=s[1] ? "<b>"+s[1]+"</b>" : I18n.t('javascripts.directions.instructions.unnamed'); }
47                                 steps.push([line[s[3]], s[0].split('-')[0], instText, s[2]]);
48                         }
49                         if (steps.length) router.setItinerary({ steps: steps });
50                         return true;
51                 }
52         };
53 };
54
55 OSM.RoutingEngines.list.push(new OSRMEngine("Car", "http://router.project-osrm.org/viaroute").createConfig());