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

   1 // For docs, see:
   2 // https://developer.mapquest.com/web/products/open/directions-service
   3 // https://open.mapquestapi.com/directions/
   4 // https://github.com/apmon/openstreetmap-website/blob/21edc353a4558006f0ce23f5ec3930be6a7d4c8b/app/controllers/routing_controller.rb#L153
   5
   6 function MapQuestEngine(id, routeType) {
   7   var MQ_SPRITE_MAP = {
   8     0: 0, // straight
   9     1: 1, // slight right
  10     2: 2, // right
  11     3: 3, // sharp right
  12     4: 4, // reverse
  13     5: 7, // sharp left
  14     6: 6, // left
  15     7: 5, // slight left
  16     8: 4, // right U-turn
  17     9: 4, // left U-turn
  18     10: 21, // right merge
  19     11: 20, // left merge
  20     12: 21, // right on-ramp
  21     13: 20, // left on-ramp
  22     14: 24, // right off-ramp
  23     15: 25, // left off-ramp
  24     16: 18, // right fork
  25     17: 19, // left fork
  26     18: 0  // straight fork
  27   };
  28
  29   return {
  30     id: id,
  31     creditline: '<a href="https://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 from = points[0];
  36       var to = points[points.length - 1];
  37
  38       return $.ajax({
  39         url: OSM.MAPQUEST_DIRECTIONS_URL,
  40         data: {
  41           key: OSM.MAPQUEST_KEY,
  42           from: from.lat + "," + from.lng,
  43           to: to.lat + "," + to.lng,
  44           routeType: routeType,
  45           // locale: I18n.currentLocale(), //Doesn't actually work. MapQuest requires full locale e.g. "de_DE", but I18n may only provides language, e.g. "de"
  46           manMaps: false,
  47           shapeFormat: "raw",
  48           generalize: 0,
  49           unit: "k"
  50         },
  51         dataType: "jsonp",
  52         success: function (data) {
  53           if (data.info.statuscode !== 0)
  54             return callback(true);
  55
  56           var i;
  57           var line = [];
  58           var shape = data.route.shape.shapePoints;
  59           for (i = 0; i < shape.length; i += 2) {
  60             line.push(L.latLng(shape[i], shape[i + 1]));
  61           }
  62
  63           // data.route.shape.maneuverIndexes links turns to polyline positions
  64           // data.route.legs[0].maneuvers is list of turns
  65           var steps = [];
  66           var mq = data.route.legs[0].maneuvers;
  67           for (i = 0; i < mq.length; i++) {
  68             var s = mq[i];
  69             var d;
  70             var linesegstart, linesegend, lineseg;
  71             linesegstart = data.route.shape.maneuverIndexes[i];
  72             if (i === mq.length - 1) {
  73               d = 15;
  74               linesegend = linesegstart + 1;
  75             } else {
  76               d = MQ_SPRITE_MAP[s.turnType];
  77               linesegend = data.route.shape.maneuverIndexes[i + 1] + 1;
  78             }
  79             lineseg = [];
  80             for (var j = linesegstart; j < linesegend; j++) {
  81               lineseg.push(L.latLng(data.route.shape.shapePoints[j * 2], data.route.shape.shapePoints[j * 2 + 1]));
  82             }
  83             steps.push([L.latLng(s.startPoint.lat, s.startPoint.lng), d, s.narrative, s.distance * 1000, lineseg]);
  84           }
  85
  86           callback(false, {
  87             line: line,
  88             steps: steps,
  89             distance: data.route.distance * 1000,
  90             time: data.route.time
  91           });
  92         },
  93         error: function () {
  94           callback(true);
  95         }
  96       });
  97     }
  98   };
  99 }
 100
 101 if (OSM.MAPQUEST_KEY) {
 102   OSM.Directions.addEngine(new MapQuestEngine("mapquest_bicycle", "bicycle"), true);
 103   OSM.Directions.addEngine(new MapQuestEngine("mapquest_foot", "pedestrian"), true);
 104   OSM.Directions.addEngine(new MapQuestEngine("mapquest_car", "fastest"), true);
 105 }