app/assets/javascripts/index/directions/mapquest.js

   1 // For docs, see:
   2 // http://developer.mapquest.com/web/products/open/directions-service
   3 // http://open.mapquestapi.com/directions/
   4 // https://github.com/apmon/openstreetmap-website/blob/21edc353a4558006f0ce23f5ec3930be6a7d4c8b/app/controllers/routing_controller.rb#L153
   5
   6 function MapQuestEngine(id, vehicleParam) {
   7   var MQ_SPRITE_MAP = {
   8     0: 1, // straight
   9     1: 2, // slight right
  10     2: 3, // right
  11     3: 4, // sharp right
  12     4: 5, // reverse
  13     5: 6, // sharp left
  14     6: 7, // left
  15     7: 8, // slight left
  16     8: 5, // right U-turn
  17     9: 5, // left U-turn
  18     10: 2, // right merge
  19     11: 8, // left merge
  20     12: 2, // right on-ramp
  21     13: 8, // left on-ramp
  22     14: 2, // right off-ramp
  23     15: 8, // left off-ramp
  24     16: 2, // right fork
  25     17: 8, // left fork
  26     18: 1  // straight fork
  27   };
  28
  29   return {
  30     id: id,
  31     creditline: '<a href="http://www.mapquest.com/" target="_blank">MapQuest</a> <img src="' + document.location.protocol + '//developer.mapquest.com/content/osm/mq_logo.png">',
  32     draggable: false,
  33
  34     getRoute: function (points, callback) {
  35       var url = document.location.protocol + "//open.mapquestapi.com/directions/v2/route";
  36       var from = points[0];
  37       var to = points[points.length - 1];
  38       url += "?key=" + OSM.MAPQUEST_KEY;
  39       url += "&from=" + from.lat + ',' + from.lng;
  40       url += "&to=" + to.lat + ',' + to.lng;
  41       url += "&" + vehicleParam;
  42       //url+="&locale=" + I18n.currentLocale(); //Doesn't actually work. MapQuest requires full locale e.g. "de_DE", but I18n may only provides language, e.g. "de"
  43       url += "&manMaps=false";
  44       url += "&shapeFormat=raw&generalize=0&unit=k";
  45
  46       return $.ajax({
  47         url: url,
  48         success: function (data) {
  49           if (data.info.statuscode !== 0)
  50             return callback(true);
  51
  52           var i;
  53           var line = [];
  54           var shape = data.route.shape.shapePoints;
  55           for (i = 0; i < shape.length; i += 2) {
  56             line.push(L.latLng(shape[i], shape[i + 1]));
  57           }
  58
  59           // data.route.shape.maneuverIndexes links turns to polyline positions
  60           // data.route.legs[0].maneuvers is list of turns
  61           var steps = [];
  62           var mq = data.route.legs[0].maneuvers;
  63           for (i = 0; i < mq.length; i++) {
  64             var s = mq[i];
  65             var d;
  66             var linesegstart, linesegend, lineseg;
  67             linesegstart = data.route.shape.maneuverIndexes[i];
  68             if (i === mq.length - 1) {
  69               d = 15;
  70               linesegend = linesegstart + 1;
  71             } else {
  72               d = MQ_SPRITE_MAP[s.turnType];
  73               linesegend = data.route.shape.maneuverIndexes[i + 1] + 1;
  74             }
  75             lineseg = [];
  76             for (var j = linesegstart; j < linesegend; j++) {
  77               lineseg.push(L.latLng(data.route.shape.shapePoints[j * 2], data.route.shape.shapePoints[j * 2 + 1]));
  78             }
  79             steps.push([L.latLng(s.startPoint.lat, s.startPoint.lng), d, s.narrative, s.distance * 1000, lineseg]);
  80           }
  81
  82           callback(null, {
  83             line: line,
  84             steps: steps,
  85             distance: data.route.distance * 1000,
  86             time: data.route.time
  87           });
  88         }
  89       });
  90     }
  91   };
  92 }
  93
  94 if (OSM.MAPQUEST_KEY) {
  95   OSM.Directions.addEngine(new MapQuestEngine("mapquest_bicycle", "routeType=bicycle"), true);
  96   OSM.Directions.addEngine(new MapQuestEngine("mapquest_foot", "routeType=pedestrian"), true);
  97   OSM.Directions.addEngine(new MapQuestEngine("mapquest_car", "routeType=fastest"), true);
  98 }