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.requestJSONP(url+"&jsonp=");
  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());