74 lines
2.3 KiB
JavaScript
74 lines
2.3 KiB
JavaScript
function GraphHopperEngine(id, vehicleType) {
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var GH_INSTR_MAP = {
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"-3": 6, // sharp left
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"-2": 7, // left
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"-1": 8, // slight left
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0: 0, // straight
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1: 1, // slight right
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2: 2, // right
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3: 3, // sharp right
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4: -1, // finish reached
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5: -1, // via reached
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6: 11 // roundabout
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};
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return {
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id: id,
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creditline: '<a href="https://graphhopper.com/" target="_blank">Graphhopper</a>',
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draggable: false,
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getRoute: function (points, callback) {
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// GraphHopper Directions API documentation
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// https://github.com/graphhopper/directions-api/blob/master/docs-routing.md
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return $.ajax({
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url: document.location.protocol + "//graphhopper.com/api/1/route",
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data: {
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vehicle: vehicleType,
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locale: I18n.currentLocale(),
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key: "LijBPDQGfu7Iiq80w3HzwB4RUDJbMbhs6BU0dEnn",
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type: "jsonp",
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elevation: false,
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instructions: true,
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point: points.map(function (p) { return p.lat + "," + p.lng; })
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},
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traditional: true,
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dataType: "jsonp",
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success: function (data) {
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if (!data.paths || data.paths.length === 0)
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return callback(true);
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var path = data.paths[0];
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var line = L.PolylineUtil.decode(path.points);
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var steps = [];
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var len = path.instructions.length;
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for (var i = 0; i < len; i++) {
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var instr = path.instructions[i];
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var instrCode = (i === len - 1) ? 15 : GH_INSTR_MAP[instr.sign];
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var instrText = "<b>" + (i + 1) + ".</b> ";
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instrText += instr.text;
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var latLng = line[instr.interval[0]];
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var distInMeter = instr.distance;
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steps.push([
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{lat: latLng.lat, lng: latLng.lng},
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instrCode,
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instrText,
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distInMeter,
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[]
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]); // TODO does graphhopper map instructions onto line indices?
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}
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callback(null, {
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line: line,
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steps: steps,
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distance: path.distance,
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time: path.time / 1000
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});
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}
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});
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}
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};
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}
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OSM.Directions.addEngine(new GraphHopperEngine("graphhopper_bicycle", "bike"), true);
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OSM.Directions.addEngine(new GraphHopperEngine("graphhopper_foot", "foot"), true);
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