+GraphHopperEngine = function(vehicleName, vehicleParam, locale) {
+ this.vehicleName = vehicleName;
+ this.vehicleParam = vehicleParam;
+ this.locale = locale;
+ if (!locale)
+ this.locale = "en";
+};
+
+GraphHopperEngine.prototype.createConfig = function() {
+ var that = this;
+ return {
+ name: "javascripts.directions.engines.graphhopper_"+this.vehicleName.toLowerCase(),
+ draggable: false,
+ _hints: {},
+ getRoute: function(isFinal, points) {
+ var url = "http://graphhopper.com/routing/api/route?"
+ + that.vehicleParam
+ + "&locale=" + that.locale;
+ for (var i = 0; i < points.length; i++) {
+ var pair = points[i].join(',');
+ url += "&point=" + pair;
+ }
+ if (isFinal)
+ url += "&instructions=true";
+ // GraphHopper supports json too
+ this.requestJSONP(url + "&type=jsonp&callback=");
+ },
+ gotRoute: function(router, data) {
+ if (!data.info.routeFound) {
+ return false;
+ }
+ // Draw polyline
+ var line = L.PolylineUtil.decode(data.route.coordinates);
+ router.setPolyline(line);
+ // Assemble instructions
+ var steps = [];
+ var instr = data.route.instructions;
+ for (i = 0; i < instr.descriptions.length; i++) {
+ var indi = instr.indications[i];
+ var instrCode = (i == instr.descriptions.length - 1) ? 15 : this.GH_INSTR_MAP[indi];
+ var instrText = "<b>" + (i + 1) + ".</b> ";
+ instrText += instr.descriptions[i];
+ var latlng = instr.latLngs[i];
+ var distInMeter = instr.distances[i];
+ steps.push([{lat: latlng[0], lng: latlng[1]}, instrCode, instrText, distInMeter]);
+ }
+ router.setItinerary({steps: steps});
+ return true;
+ },
+ GH_INSTR_MAP: {
+ "-3": 6, // sharp left
+ "-2": 7, // left
+ "-1": 8, // slight left
+ 0: 0, // straight
+ 1: 1, // slight right
+ 2: 2, // right
+ 3: 3 // sharp right
+ }
+ };
+};
+
+OSM.RoutingEngines.list.push(new GraphHopperEngine("Bicycle", "vehicle=bike").createConfig());
+OSM.RoutingEngines.list.push(new GraphHopperEngine("Foot", "vehicle=foot").createConfig());