/*
- osm.org routing interface
-
- See also:
- https://github.com/apmon/openstreetmap-website/tree/routing2
- https://github.com/apmon/openstreetmap-website/compare/routing2
- https://github.com/apmon/openstreetmap-website/blob/9755c3ae0a8d0684d43760f91dc864ff42d8477a/app/views/routing/start.js.erb
-
- *** draggable start/end markers
-
+ osm.org routing interface
*/
-var TURN_INSTRUCTIONS=["",
- "Continue on ", // 1
- "Slight right onto ", // 2
- "Turn right onto ", // 3
- "Sharp right onto ", // 4
- "U-turn along ", // 5
- "Sharp left onto ", // 6
- "Turn left onto ", // 7
- "Slight left onto ", // 8
- "(via point) ", // 9
- "Follow ", // 10
- "At roundabout take ", // 11
- "Leave roundabout - ", // 12
- "Stay on roundabout - ", // 13
- "Start at end of ", // 14
- "Reach destination", // 15
- "Go against one-way on ", // 16
- "End of one-way on "] // 17
-
-var ROUTING_POLYLINE={
- color: '#03f',
- opacity: 0.3,
- weight: 10
+var TURN_INSTRUCTIONS = [];
+
+var ROUTING_POLYLINE = {
+ color: '#03f',
+ opacity: 0.3,
+ weight: 10
+};
+
+var ROUTING_POLYLINE_HIGHLIGHT = {
+ color: '#ff0',
+ opacity: 0.5,
+ weight: 12
+};
+
+OSM.RoutingEngines = {
+ list: [],
+ add: function (supportsHTTPS, engine) {
+ if (document.location.protocol == "http:" || supportsHTTPS) this.list.push(engine);
+ }
};
+OSM.Routing = function (map, name, jqSearch) {
+ var r = {};
+
+ 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
+ ];
+
+ r.map = map; // Leaflet map
+ r.name = name; // global variable name of this instance (needed for JSONP)
+ r.jqSearch = jqSearch; // JQuery object for search panel
+
+ r.route_from = null; // null=unset, false=awaiting response, [lat,lon]=geocoded
+ r.route_to = null; // |
+ r.awaitingGeocode = false;// true if the user has requested a route, but we're waiting on a geocode result
+ r.awaitingRoute = false; // true if we've asked the engine for a route and are waiting to hear back
+ r.dragging = false; // true if the user is dragging a start/end point
+ r.viaPoints = []; // not yet used
+
+ r.polyline = null; // Leaflet polyline object
+ r.popup = null; // Leaflet popup object
+ r.marker_from = null; // Leaflet from marker
+ r.marker_to = null; // Leaflet to marker
+
+ r.chosenEngine = null; // currently selected routing engine
+
+ var icon_from = L.icon({
+ iconUrl: <%= asset_path('marker-green.png').to_json %>,
+ iconSize: [25, 41],
+ iconAnchor: [12, 41],
+ popupAnchor: [1, -34],
+ shadowUrl: <%= asset_path('images/marker-shadow.png').to_json %>,
+ shadowSize: [41, 41]
+ });
+
+ var icon_to = L.icon({
+ iconUrl: <%= asset_path('marker-red.png').to_json %>,
+ iconSize: [25, 41],
+ iconAnchor: [12, 41],
+ popupAnchor: [1, -34],
+ shadowUrl: <%= asset_path('images/marker-shadow.png').to_json %>,
+ shadowSize: [41, 41]
+ });
+
+ // Geocoding
+
+ r.geocode = function (id, event) {
+ var _this = this;
+ var field = event.target;
+ var v = event.target.value;
+ var querystring = '<%= NOMINATIM_URL %>search?q=' + encodeURIComponent(v) + '&format=json';
+ // *** &accept-language=<%#= request.user_preferred_languages.join(',') %>
+ r[field.id] = false;
+ $.getJSON(querystring, function (json) {
+ _this._gotGeocode(json, field);
+ });
+ };
+
+ r._gotGeocode = function (json, field) {
+ if (json.length == 0) {
+ alert(I18n.t('javascripts.directions.errors.no_place'));
+ r[field.id] = null;
+ return;
+ }
+ field.value = json[0].display_name;
+ var lat = Number(json[0].lat), lon = Number(json[0].lon);
+ r[field.id] = [lat, lon];
+ r.updateMarker(field.id);
+ if (r.awaitingGeocode) {
+ r.awaitingGeocode = false;
+ r.requestRoute(true, true);
+ }
+ };
+
+ // Drag and drop markers
+
+ r.handleDrop = function (e) {
+ var oe = e.originalEvent;
+ var id = oe.dataTransfer.getData('id');
+ var pt = L.DomEvent.getMousePosition(oe, map.getContainer()); // co-ordinates of the mouse pointer at present
+ pt.x += Number(oe.dataTransfer.getData('offsetX'));
+ pt.y += Number(oe.dataTransfer.getData('offsetY'));
+ var ll = map.containerPointToLatLng(pt);
+ r.createMarker(ll, id);
+ r.setNumericInput(ll, id);
+ r.requestRoute(true, false);
+ // update to/from field
+ };
+
+ r.createMarker = function (latlng, id) {
+ if (r[id]) r.map.removeLayer(r[id]);
+ r[id] = L.marker(latlng, {
+ icon: id == 'marker_from' ? icon_from : icon_to,
+ draggable: true,
+ name: id
+ }).addTo(r.map);
+ r[id].on('drag', r.markerDragged);
+ r[id].on('dragend', r.markerDragged);
+ };
+
+ // Update marker from geocoded route input
+ r.updateMarker = function (id) {
+ var m = id.replace('route', 'marker');
+ if (!r[m]) {
+ r.createMarker(r[id], m);
+ return;
+ }
+ var ll = r[m].getLatLng();
+ if (ll.lat != r[id][0] || ll.lng != r[id][1]) {
+ r.createMarker(r[id], m);
+ }
+ };
+
+ // Marker has been dragged
+ r.markerDragged = function (e) {
+ r.dragging = (e.type == 'drag'); // true for drag, false for dragend
+ if (r.dragging && !r.chosenEngine.draggable) return;
+ if (r.dragging && r.awaitingRoute) return;
+ r.setNumericInput(e.target.getLatLng(), e.target.options.name);
+ r.requestRoute(!r.dragging, false);
+ };
+
+ // Set a route input field to a numeric value
+ r.setNumericInput = function (ll, id) {
+ var routeid = id.replace('marker', 'route');
+ r[routeid] = [ll.lat, ll.lng];
+ $("[name=" + routeid + "]:visible").val(Math.round(ll.lat * 10000) / 10000 + " " + Math.round(ll.lng * 10000) / 10000);
+ };
+
+ // Route-fetching UI
+
+ r.requestRoute = function (isFinal, updateZoom) {
+ if (r.route_from && r.route_to) {
+ $(".query_wrapper.routing .spinner").show();
+ r.awaitingRoute = true;
+ r.chosenEngine.getRoute(isFinal, [r.route_from, r.route_to]);
+ if (updateZoom) {
+ r.map.fitBounds(L.latLngBounds([r.route_from, r.route_to]).pad(0.05));
+ }
+ // then, when the route has been fetched, it'll call the engine's gotRoute function
+ } else if (r.route_from == false || r.route_to == false) {
+ // we're waiting for a Nominatim response before we can request a route
+ r.awaitingGeocode = true;
+ }
+ };
+
+ // Take an array of Leaflet LatLngs and draw it as a polyline
+ r.setPolyline = function (line) {
+ if (r.polyline) map.removeLayer(r.polyline);
+ r.polyline = L.polyline(line, ROUTING_POLYLINE).addTo(r.map);
+ };
+
+ // Take directions and write them out
+ // data = { steps: array of [latlng, sprite number, instruction text, distance in metres, highlightPolyline] }
+ // sprite numbers equate to OSRM's route_instructions turn values
+ r.setItinerary = function (data) {
+ // Create base table
+ $("#content").removeClass("overlay-sidebar");
+ $('#sidebar_content').empty();
+ var html = ('<h2><a class="geolink" href="#" onclick="$(~.close_directions~).click();return false;">' +
+ '<span class="icon close"></span></a>' + I18n.t('javascripts.directions.directions') +
+ '</h2><p id="routing_summary">' +
+ I18n.t('javascripts.directions.distance') + ': ' + r.formatDistance(data.distance) + '. ' +
+ I18n.t('javascripts.directions.time') + ': ' + r.formatTime(data.time) + '.</p>' +
+ '<table id="turnbyturn" />').replace(/~/g, "'");
+ $('#sidebar_content').html(html);
+ // Add each row
+ var cumulative = 0;
+ for (var i = 0; i < data.steps.length; i++) {
+ var step = data.steps[i];
+ // Distance
+ var dist = step[3];
+ if (dist < 5) {
+ dist = "";
+ }
+ else if (dist < 200) {
+ dist = Math.round(dist / 10) * 10 + "m";
+ }
+ else if (dist < 1500) {
+ dist = Math.round(dist / 100) * 100 + "m";
+ }
+ else if (dist < 5000) {
+ dist = Math.round(dist / 100) / 10 + "km";
+ }
+ else {
+ dist = Math.round(dist / 1000) + "km";
+ }
+ // Add to table
+ var row = $("<tr class='turn'/>");
+ row.append("<td class='direction i" + step[1] + "'> ");
+ row.append("<td class='instruction'>" + step[2]);
+ row.append("<td class='distance'>" + dist);
+ with ({ instruction: step[2], ll: step[0], lineseg: step[4] }) {
+ row.on('click', function (e) {
+ r.clickTurn(instruction, ll);
+ });
+ row.hover(function (e) {
+ r.highlightSegment(lineseg);
+ }, function (e) {
+ r.unhighlightSegment();
+ });
+ }
+ ;
+ $('#turnbyturn').append(row);
+ cumulative += step[3];
+ }
+ $('#sidebar_content').append('<p id="routing_credit">' + I18n.t('javascripts.directions.instructions.courtesy', {link: r.chosenEngine.creditline}) + '</p>');
+ };
+
+ r.clickTurn = function (instruction, latlng) {
+ r.popup = L.popup().setLatLng(latlng).setContent("<p>" + instruction + "</p>").openOn(r.map);
+ };
+
+ r.highlightSegment = function (lineseg) {
+ if (r.highlighted) map.removeLayer(r.highlighted);
+ r.highlighted = L.polyline(lineseg, ROUTING_POLYLINE_HIGHLIGHT).addTo(r.map);
+ };
+
+ r.unhighlightSegment = function () {
+ if (r.highlighted) map.removeLayer(r.highlighted);
+ };
+
+ r.formatDistance = function (m) {
+ if (m < 1000) {
+ return Math.round(m) + "m";
+ }
+ else if (m < 10000) {
+ return (m / 1000.0).toFixed(1) + "km";
+ }
+ else {
+ return Math.round(m / 1000) + "km";
+ }
+ };
+
+ r.formatTime = function (s) {
+ var m = Math.round(s / 60);
+ var h = Math.floor(m / 60);
+ m -= h * 60;
+ return h + ":" + (m < 10 ? '0' : '') + m;
+ };
+
+ // Close all routing UI
+
+ r.close = function () {
+ $("#content").addClass("overlay-sidebar");
+ r.route_from = r.route_to = null;
+ $(".query_wrapper.routing input").val("");
+ var remove = ['polyline', 'popup', 'marker_from', 'marker_to'];
+ for (var i = 0; i < remove.length; i++) {
+ if (r[remove[i]]) {
+ map.removeLayer(r[remove[i]]);
+ r[remove[i]] = null;
+ }
+ }
+ };
+
+ // Routing engine handling
+
+ // Add all engines
+ var list = OSM.RoutingEngines.list;
+ list.sort(function (a, b) {
+ return I18n.t(a.name) > I18n.t(b.name);
+ });
+ var select = r.jqSearch.find('select.routing_engines');
+ for (var i = 0; i < list.length; i++) {
+ // Set up JSONP callback
+ with ({num: i}) {
+ list[num].requestJSONP = function (url) {
+ var script = document.createElement('script');
+ script.src = url + r.name + ".gotRoute" + num;
+ document.body.appendChild(script);
+ };
+ list[num].requestCORS = function (url) {
+ $.ajax({ url: url, method: "GET", data: {}, dataType: 'json', success: r['gotRoute' + num] });
+ };
+ r['gotRoute' + num] = function (data) {
+ r.awaitingRoute = false;
+ $(".query_wrapper.routing .spinner").hide();
+ if (!list[num].gotRoute(r, data)) {
+ // No route found
+ if (r.polyline) {
+ map.removeLayer(r.polyline);
+ r.polyline = null;
+ }
+ if (!r.dragging) {
+ alert(I18n.t('javascripts.directions.errors.no_route'));
+ }
+ }
+ };
+ }
+ select.append("<option value='" + i + "'>" + I18n.t(list[i].name) + "</option>");
+ }
+
+ r.engines = list;
+ r.chosenEngine = list[0]; // default to first engine
+
+ // Choose an engine on dropdown change
+ r.selectEngine = function (e) {
+ r.chosenEngine = r.engines[e.target.selectedIndex];
+ if (r.polyline) { // and if a route is currently showing, must also refresh, else confusion
+ r.requestRoute(true, false);
+ }
+ };
+
+ // Choose an engine by name
+ r.chooseEngine = function (name) {
+ for (var i = 0; i < r.engines.length; i++) {
+ if (r.engines[i].name == name) {
+ r.chosenEngine = r.engines[i];
+ r.jqSearch.find('select.routing_engines').val(i);
+ }
+ }
+ };
-OSM.Routing=function(map,name,jqSearch) {
- var r={};
- r.map=map; // Leaflet map
- r.name=name; // global variable name of this instance (needed for JSONP)
- r.jqSearch=jqSearch; // JQuery object for search panel
-
- r.route_from=null;
- r.route_to=null;
- r.viaPoints=[];
- r.polyline=null;
-
- // Geocoding
-
- r.geocode=function(id,event) { var _this=this;
- var field=event.target;
- var v=event.target.value;
- // *** do something if v==''
- var querystring = '<%= NOMINATIM_URL %>search?q=' + encodeURIComponent(v) + '&format=json';
- // *** &accept-language=<%#= request.user_preferred_languages.join(',') %>
- // *** prefer current viewport
- $.getJSON(querystring, function(json) { _this._gotGeocode(json,field); });
- };
-
- r._gotGeocode=function(json,field) {
- if (json.length==0) {
- alert("Sorry, couldn't find that place."); // *** internationalise
- r[field.id]=null;
- return;
- }
- field.value=json[0].display_name;
- var lat=Number(json[0].lat), lon=Number(json[0].lon);
- r[field.id]=[lat,lon];
- // ** update markers
- };
-
- // Route-fetching UI
-
- r.requestRoute=function() {
- if (r.route_from && r.route_to) {
- var chosen=jqSearch.find('select.routing_engines :selected').val();
- r.engines[chosen].getRoute(true,[r.route_from,r.route_to]);
- // then, when the route has been fetched, it'll call the engine's gotRoute function
- }
- };
-
- // Take an array of Leaflet LatLngs and draw it as a polyline
- r.setPolyline=function(line) {
- if (r.polyline) map.removeLayer(r.polyline);
- r.polyline=L.polyline(line, ROUTING_POLYLINE).addTo(r.map);
- // *** zoom to fit
- };
-
- // Take an array of directions and write it out
- // (we use OSRM's route_instructions format)
- r.setItinerary=function(steps) {
- $("#content").removeClass("overlay-sidebar");
- $('#sidebar_content').empty();
- var html="";
- for (var i=0; i<steps.length; i++) {
- var s=steps[i];
- html+="<div class='route_step'>";
- html+=TURN_INSTRUCTIONS[s[0]] || s[0];
- html+=s[1];
- html+="</div>";
- }
- $('#sidebar_content').html(html);
- };
-
-
- // Add engines
-
- r.engines=[];
- r.addEngine=function(engine) {
- // Save engine
- var i=r.engines.length;
- engine.subscript=i;
- r['engine'+i]=engine;
- r.engines.push(engine);
-
- // Add generic JSONP function
- engine.requestJSONP=function(url) {
- var script = document.createElement('script');
- script.src = url+"&jsonp="+r.name+".engine"+this.subscript+".gotRoute";
- // OSRM doesn't like non-alphanumeric, otherwise we could just do OSM.routing.engines["+engine.subscript+"].gotRoute
- document.body.appendChild(script);
- };
-
- // Populate dropdown
- var select=jqSearch.find('select.routing_engines');
- select.append("<option value='"+i+"'>"+engine.name+"</option>");
- };
-
- // OSRM car engine
- // *** this should all be shared from an OSRM library somewhere
- // *** need to clear hints at some point
-
- r.addEngine({
- name: 'Car (OSRM)',
- draggable: true,
- _hints: {},
- getRoute: function(final,points) {
- var url="http://router.project-osrm.org/viaroute?z=14&output=json";
- for (var i=0; i<points.length; i++) {
- var pair=points[i].join(',');
- url+="&loc="+pair;
- if (this._hints[pair]) url+= "&hint="+this._hints[pair];
- }
- if (final) url+="&instructions=true";
- this.requestJSONP(url);
- },
- gotRoute: function(data) {
- // *** save hints
- var line=L.PolylineUtil.decode(data.route_geometry);
- for (i=0; i<line.length; i++) { line[i].lat/=10; line[i].lng/=10; }
- r.setPolyline(line);
- r.setItinerary(data.route_instructions);
- }
- });
-
- return r;
+ return r;
};
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