213 lines
8 KiB
JavaScript
213 lines
8 KiB
JavaScript
// FOSSGIS engine (OSRM based)
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// Doesn't yet support hints
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function FOSSGISEngine(id, vehicleType) {
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var cachedHints = [];
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return {
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id: id,
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creditline: "<a href=\"https://routing.openstreetmap.de/about.html\" target=\"_blank\">FOSSGIS Routing Service</a>",
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draggable: true,
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_transformSteps: function(input_steps, line) {
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var INSTRUCTION_TEMPLATE = {
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"continue": "javascripts.directions.instructions.continue",
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"merge right": "javascripts.directions.instructions.merge_right",
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"merge left": "javascripts.directions.instructions.merge_left",
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"off ramp right": "javascripts.directions.instructions.offramp_right",
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"off ramp left": "javascripts.directions.instructions.offramp_left",
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"on ramp right": "javascripts.directions.instructions.onramp_right",
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"on ramp left": "javascripts.directions.instructions.onramp_left",
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"fork right": "javascripts.directions.instructions.fork_right",
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"fork left": "javascripts.directions.instructions.fork_left",
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"end of road right": "javascripts.directions.instructions.endofroad_right",
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"end of road left": "javascripts.directions.instructions.endofroad_left",
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"turn straight": "javascripts.directions.instructions.continue",
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"turn slight right": "javascripts.directions.instructions.slight_right",
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"turn right": "javascripts.directions.instructions.turn_right",
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"turn sharp right": "javascripts.directions.instructions.sharp_right",
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"turn uturn": "javascripts.directions.instructions.uturn",
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"turn sharp left": "javascripts.directions.instructions.sharp_left",
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"turn left": "javascripts.directions.instructions.turn_left",
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"turn slight left": "javascripts.directions.instructions.slight_left",
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"roundabout": "javascripts.directions.instructions.roundabout",
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"rotary": "javascripts.directions.instructions.roundabout",
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"exit roundabout": "javascripts.directions.instructions.exit_roundabout",
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"exit rotary": "javascripts.directions.instructions.exit_roundabout",
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"depart": "javascripts.directions.instructions.start",
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"arrive": "javascripts.directions.instructions.destination",
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};
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var ICON_MAP = {
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"continue": 0,
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"merge right": 21,
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"merge left": 20,
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"off ramp right": 24,
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"off ramp left": 25,
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"on ramp right": 2,
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"on ramp left": 6,
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"fork right": 18,
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"fork left": 19,
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"end of road right": 22,
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"end of road left": 23,
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"turn straight": 0,
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"turn slight right": 1,
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"turn right": 2,
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"turn sharp right": 3,
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"turn uturn": 4,
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"turn slight left": 5,
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"turn left": 6,
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"turn sharp left": 7,
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"roundabout": 10,
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"rotary": 10,
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"exit roundabout": 10,
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"exit rotary": 10,
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"depart": 8,
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"arrive": 14
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};
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var numToWord = function(num) {
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return ["first", "second", "third", "fourth", "fifth", "sixth", "seventh", "eighth", "ninth", "tenth"][num-1];
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};
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var transformed_steps = input_steps.map(function(step, idx) {
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var maneuver_id;
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// special case handling
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switch (step.maneuver.type) {
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case "on ramp":
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case "off ramp":
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case "merge":
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case "end of road":
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case "fork":
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maneuver_id = step.maneuver.type + " " + (step.maneuver.modifier.indexOf("left") >= 0 ? "left" : "right");
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break;
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case "depart":
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case "arrive":
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case "roundabout":
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case "rotary":
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case "exit roundabout":
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case "exit rotary":
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maneuver_id = step.maneuver.type;
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break;
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case "roundabout turn":
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case "turn":
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maneuver_id = "turn " + step.maneuver.modifier;
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break;
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// for unknown types the fallback is turn
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default:
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maneuver_id = "turn " + step.maneuver.modifier;
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break;
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}
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var template = INSTRUCTION_TEMPLATE[maneuver_id];
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// convert lat,lng pairs to LatLng objects
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var step_geometry = L.PolylineUtil.decode(step.geometry, { precision: 5 }).map(function(a) { return L.latLng(a); });
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// append step_geometry on line
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Array.prototype.push.apply(line, step_geometry);
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var instText = "<b>" + (idx + 1) + ".</b> ";
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var destinations = "<b>" + step.destinations + "</b>";
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var namedRoad = true;
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var name;
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if (step.name && step.ref) {
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name = "<b>" + step.name + " (" + step.ref + ")</b>";
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} else if (step.name) {
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name = "<b>" + step.name + "</b>";
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} else if (step.ref) {
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name = "<b>" + step.ref + "</b>";
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} else {
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name = I18n.t("javascripts.directions.instructions.unnamed");
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namedRoad = false;
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}
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if (step.maneuver.type.match(/^exit (rotary|roundabout)$/)) {
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instText += I18n.t(template, { name: name });
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} else if (step.maneuver.type.match(/^(rotary|roundabout)$/)) {
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if (step.maneuver.exit) {
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if (step.maneuver.exit <= 10) {
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instText += I18n.t(template + "_with_exit_ordinal", { exit: I18n.t("javascripts.directions.instructions.exit_counts." + numToWord(step.maneuver.exit)), name: name });
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} else {
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instText += I18n.t(template + "_with_exit", { exit: step.maneuver.exit, name: name });
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}
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} else {
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instText += I18n.t(template + "_without_exit", { name: name });
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}
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} else if (step.maneuver.type.match(/^(on ramp|off ramp)$/)) {
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var params = {};
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if (step.exits && step.maneuver.type.match(/^(off ramp)$/)) params.exit = step.exits;
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if (step.destinations) params.directions = destinations;
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if (namedRoad) params.directions = name;
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if (Object.keys(params).length > 0) {
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template = template + "_with_" + Object.keys(params).join("_");
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}
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instText += I18n.t(template, params);
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} else {
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instText += I18n.t(template + "_without_exit", { name: name });
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}
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return [[step.maneuver.location[1], step.maneuver.location[0]], ICON_MAP[maneuver_id], instText, step.distance, step_geometry];
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});
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return transformed_steps;
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},
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getRoute: function (points, callback) {
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var params = [
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{ name: "overview", value: "false" },
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{ name: "geometries", value: "polyline" },
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{ name: "steps", value: true }
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];
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if (cachedHints.length === points.length) {
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params.push({name: "hints", value: cachedHints.join(";")});
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} else {
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// invalidate cache
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cachedHints = [];
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}
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var encoded_coords = points.map(function(p) {
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return p.lng + "," + p.lat;
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}).join(";");
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var req_url = OSM.FOSSGIS_OSRM_URL + "routed-" + vehicleType + "/route/v1/driving/" + encoded_coords;
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var onResponse = function (data) {
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if (data.code !== "Ok")
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return callback(true);
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cachedHints = data.waypoints.map(function(wp) {
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return wp.hint;
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});
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var line = [];
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var transformLeg = function (leg) {
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return this._transformSteps(leg.steps, line);
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};
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var steps = [].concat.apply([], data.routes[0].legs.map(transformLeg.bind(this)));
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callback(false, {
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line: line,
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steps: steps,
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distance: data.routes[0].distance,
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time: data.routes[0].duration
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});
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};
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return $.ajax({
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url: req_url,
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data: params,
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dataType: "json",
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success: onResponse.bind(this),
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error: function () {
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callback(true);
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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 FOSSGISEngine("fossgis_osrm_car", "car"), true);
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OSM.Directions.addEngine(new FOSSGISEngine("fossgis_osrm_bike", "bike"), true);
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OSM.Directions.addEngine(new FOSSGISEngine("fossgis_osrm_foot", "foot"), true);
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