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

   1 function FOSSGISValhallaEngine(id, costing) {
   2   var INSTR_MAP = [
   3     0, // kNone = 0;
   4     8, // kStart = 1;
   5     8, // kStartRight = 2;
   6     8, // kStartLeft = 3;
   7     14, // kDestination = 4;
   8     14, // kDestinationRight = 5;
   9     14, // kDestinationLeft = 6;
  10     0, // kBecomes = 7;
  11     0, // kContinue = 8;
  12     1, // kSlightRight = 9;
  13     2, // kRight = 10;
  14     3, // kSharpRight = 11;
  15     4, // kUturnRight = 12;
  16     4, // kUturnLeft = 13;
  17     7, // kSharpLeft = 14;
  18     6, // kLeft = 15;
  19     5, // kSlightLeft = 16;
  20     0, // kRampStraight = 17;
  21     24, // kRampRight = 18;
  22     25, // kRampLeft = 19;
  23     24, // kExitRight = 20;
  24     25, // kExitLeft = 21;
  25     0, // kStayStraight = 22;
  26     1, // kStayRight = 23;
  27     5, // kStayLeft = 24;
  28     20, // kMerge = 25;
  29     10, // kRoundaboutEnter = 26;
  30     11, // kRoundaboutExit = 27;
  31     17, // kFerryEnter = 28;
  32     0, // kFerryExit = 29;
  33     ...Array(7).fill(), // irrelevant transit maneuvers
  34     21, // kMergeRight = 37;
  35     20 // kMergeLeft = 38;
  36   ];
  37
  38   return {
  39     id: id,
  40     creditline:
  41       "<a href='https://gis-ops.com/global-open-valhalla-server-online/' target='_blank'>Valhalla (FOSSGIS)</a>",
  42     draggable: false,
  43
  44     getRoute: function (points, callback) {
  45       return $.ajax({
  46         url: OSM.FOSSGIS_VALHALLA_URL,
  47         data: {
  48           json: JSON.stringify({
  49             locations: points.map(function (p) {
  50               return { lat: p.lat, lon: p.lng };
  51             }),
  52             costing: costing,
  53             directions_options: {
  54               units: "km",
  55               language: I18n.currentLocale()
  56             }
  57           })
  58         },
  59         dataType: "json",
  60         success: function (data) {
  61           var trip = data.trip;
  62
  63           if (trip.status === 0) {
  64             var line = [];
  65             var steps = [];
  66             var distance = 0;
  67             var time = 0;
  68
  69             trip.legs.forEach(function (leg) {
  70               var legLine = L.PolylineUtil.decode(leg.shape, {
  71                 precision: 6
  72               });
  73
  74               line = line.concat(legLine);
  75
  76               leg.maneuvers.forEach(function (manoeuvre, idx) {
  77                 var point = legLine[manoeuvre.begin_shape_index];
  78
  79                 steps.push([
  80                   { lat: point[0], lng: point[1] },
  81                   INSTR_MAP[manoeuvre.type],
  82                   "<b>" + (idx + 1) + ".</b> " + manoeuvre.instruction,
  83                   manoeuvre.length * 1000,
  84                   []
  85                 ]);
  86               });
  87
  88               distance = distance + leg.summary.length;
  89               time = time + leg.summary.time;
  90             });
  91
  92             callback(false, {
  93               line: line,
  94               steps: steps,
  95               distance: distance * 1000,
  96               time: time
  97             });
  98           } else {
  99             callback(true);
 100           }
 101         },
 102         error: function () {
 103           callback(true);
 104         }
 105       });
 106     }
 107   };
 108 }
 109
 110   OSM.Directions.addEngine(new FOSSGISValhallaEngine("fossgis_valhalla_car", "auto"), true);
 111   OSM.Directions.addEngine(new FOSSGISValhallaEngine("fossgis_valhalla_bicycle", "bicycle"), true);
 112   OSM.Directions.addEngine(new FOSSGISValhallaEngine("fossgis_valhalla_foot", "pedestrian"), true);