cb80c5615ba3d7fd2e23a5f59aba707c11197a5f
[rails.git] / app / assets / javascripts / routing_engines / osrm_car.js
1 // OSRM car engine
2 // *** this should all be shared from an OSRM library somewhere
3 // *** need to clear hints at some point
4
5 OSM.RoutingEngines.list.push({
6         name: 'Car (OSRM)',
7         draggable: true,
8         _hints: {},
9         getRoute: function(isFinal,points) {
10                 var url="http://router.project-osrm.org/viaroute?z=14&output=json";
11                 for (var i=0; i<points.length; i++) {
12                         var pair=points[i].join(',');
13                         url+="&loc="+pair;
14                         if (this._hints[pair]) url+= "&hint="+this._hints[pair];
15                 }
16                 if (isFinal) url+="&instructions=true";
17                 this.requestJSONP(url+"&jsonp=");
18         },
19         gotRoute: function(router,data) {
20                 if (data.status==207) {
21                         alert("Couldn't find route between those two places");
22                         return false;
23                 }
24                 // Draw polyline
25                 var line=L.PolylineUtil.decode(data.route_geometry);
26                 for (i=0; i<line.length; i++) { line[i].lat/=10; line[i].lng/=10; }
27                 router.setPolyline(line);
28                 // *** store hints
29                 // Assemble instructions
30                 var steps=[];
31                 for (i=0; i<data.route_instructions.length; i++) {
32                         var s=data.route_instructions[i];
33                         var instCodes=s[0].split('-');
34                         var instText="<b>"+(i+1)+".</b> ";
35                         instText+=TURN_INSTRUCTIONS[instCodes[0]];
36                         if (instCodes[1]) { instText+="exit "+instCodes[1]+" "; }
37                         if (instCodes[0]!=15) { instText+=s[1] ? "<b>"+s[1]+"</b>" : "(unnamed)"; }
38                         steps.push([line[s[3]], s[0].split('-')[0], instText, s[2]]);
39                 }
40                 if (steps.length) router.setItinerary({ steps: steps });
41         }
42 });