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