// Doesn't yet support hints
function OSRMEngine() {
- var previousPoints, hintData;
+ 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',
+ '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,
+ 'depart': 8,
+ 'arrive': 14
+ };
+ 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':
+ 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 name = step.name ? "<b>" + step.name + "</b>" : I18n.t('javascripts.directions.instructions.unnamed');
+ if (step.maneuver.type.match(/rotary|roundabout/)) {
+ instText += I18n.t(template + '_with_exit', { exit: step.maneuver.exit, name: name } );
+ } 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 TURN_INSTRUCTIONS = [
- "",
- I18n.t('javascripts.directions.instructions.continue_on'), // 1
- I18n.t('javascripts.directions.instructions.slight_right'), // 2
- I18n.t('javascripts.directions.instructions.turn_right'), // 3
- I18n.t('javascripts.directions.instructions.sharp_right'), // 4
- I18n.t('javascripts.directions.instructions.uturn'), // 5
- I18n.t('javascripts.directions.instructions.sharp_left'), // 6
- I18n.t('javascripts.directions.instructions.turn_left'), // 7
- I18n.t('javascripts.directions.instructions.slight_left'), // 8
- I18n.t('javascripts.directions.instructions.via_point'), // 9
- I18n.t('javascripts.directions.instructions.follow'), // 10
- I18n.t('javascripts.directions.instructions.roundabout'), // 11
- I18n.t('javascripts.directions.instructions.leave_roundabout'), // 12
- I18n.t('javascripts.directions.instructions.stay_roundabout'), // 13
- I18n.t('javascripts.directions.instructions.start'), // 14
- I18n.t('javascripts.directions.instructions.destination'), // 15
- I18n.t('javascripts.directions.instructions.against_oneway'), // 16
- I18n.t('javascripts.directions.instructions.end_oneway') // 17
+
+ var params = [
+ { name: "overview", value: "false" },
+ { name: "geometries", value: "polyline" },
+ { name: "steps", value: true }
];
- var url = document.location.protocol + "//router.project-osrm.org/viaroute?z=14&output=json&instructions=true";
- for (var i = 0; i < points.length; i++) {
- url += "&loc=" + points[i].lat + ',' + points[i].lng;
- if (hintData && previousPoints && previousPoints[i].equals(points[i])) {
- url += "&hint=" + hintData.locations[i];
- }
+ if (cachedHints.length === points.length) {
+ params.push({name: "hints", value: cachedHints.join(";")});
+ } else {
+ // invalidate cache
+ cachedHints = [];
}
- if (hintData && hintData.checksum) {
- url += "&checksum=" + hintData.checksum;
- }
+ var encoded_coords = points.map(function(p) {
+ return p.lng + ',' + p.lat;
+ }).join(';');
+
+ var req_url = document.location.protocol + 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: url,
- dataType: 'json',
- success: function (data) {
- if (data.status === 207)
- return callback(true);
-
- previousPoints = points;
- hintData = data.hint_data;
-
- var line = L.PolylineUtil.decode(data.route_geometry, {
- precision: 6
- });
-
- var steps = [];
- for (i = 0; i < data.route_instructions.length; i++) {
- var s = data.route_instructions[i];
- var linesegend;
- var instCodes = s[0].split('-');
- var instText = "<b>" + (i + 1) + ".</b> ";
- instText += TURN_INSTRUCTIONS[instCodes[0]];
- if (instCodes[1]) {
- instText += "exit " + instCodes[1] + " ";
- }
- if (instCodes[0] !== 15) {
- instText += s[1] ? "<b>" + s[1] + "</b>" : I18n.t('javascripts.directions.instructions.unnamed');
- }
- if ((i + 1) < data.route_instructions.length) {
- linesegend = data.route_instructions[i + 1][3] + 1;
- } else {
- linesegend = s[3] + 1;
- }
- steps.push([line[s[3]], s[0].split('-')[0], instText, s[2], line.slice(s[3], linesegend)]);
- }
-
- callback(null, {
- line: line,
- steps: steps,
- distance: data.route_summary.total_distance,
- time: data.route_summary.total_time
- });
+ url: req_url,
+ data: params,
+ dataType: "json",
+ success: onResponse.bind(this),
+ error: function () {
+ callback(true);
}
});
}
projects / rails.git / blobdiff