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
- *** click each part
*** translation (including all alerts and presentation)
*** export GPX
*** URL history (or do we consciously not want to support that?)
+ *** spinner when waiting for result (beneath 'Go' button?)
+
+ *** add YOURS engine
*/
var TURN_INSTRUCTIONS=["",
};
+OSM.RoutingEngines={
+ list: []
+ // common functions and constants, e.g. OSRM parser, can go here
+};
+
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;
+ 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.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
var querystring = '<%= NOMINATIM_URL %>search?q=' + encodeURIComponent(v) + '&format=json';
// *** &accept-language=<%#= request.user_preferred_languages.join(',') %>
// *** prefer current viewport
+ r[field.id]=false;
$.getJSON(querystring, function(json) { _this._gotGeocode(json,field); });
};
field.value=json[0].display_name;
var lat=Number(json[0].lat), lon=Number(json[0].lon);
r[field.id]=[lat,lon];
- // ** update markers
+ r.updateMarker(field.id);
+ if (r.awaitingGeocode) {
+ r.awaitingGeocode=false;
+ r.requestRoute(true);
+ }
};
+
+ // Drag and drop markers
+
+ r.handleDrop=function(e) {
+ var id=e.originalEvent.dataTransfer.getData('id');
+ var ll=r.map.mouseEventToLatLng(e.originalEvent);
+ // *** ^^^ this is slightly off - we need to work out the latLng of the tip
+ r.createMarker(ll,id);
+ r.setNumericInput(ll,id);
+ r.requestRoute(true);
+ // 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) {
+ if (e.type=='drag' && !r.chosenEngine.draggable) return;
+ if (e.type=='drag' && r.awaitingRoute) return;
+ r.setNumericInput(e.target.getLatLng(), e.target.options.name);
+ r.requestRoute(e.type=='dragend');
+ };
+ // 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() {
+ r.requestRoute=function(isFinal) {
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]);
+ r.awaitingRoute=true;
+ r.chosenEngine.getRoute(isFinal,[r.route_from,r.route_to]);
// 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;
}
};
r.setPolyline=function(line) {
if (r.polyline) map.removeLayer(r.polyline);
r.polyline=L.polyline(line, ROUTING_POLYLINE).addTo(r.map);
- r.map.fitBounds(r.polyline.getBounds());
+ // r.map.fitBounds(r.polyline.getBounds());
+ // *** ^^^ we only want to do this for geocode-originated routes
};
- // Take an array of directions and write it out
- // (we use OSRM's route_instructions format)
+ // Take directions and write them out
+ // data = { steps: array of [latlng, sprite number, instruction text, distance in metres] }
+ // sprite numbers equate to OSRM's route_instructions turn values
// *** translations?
- r.setItinerary=function(steps) {
+ r.setItinerary=function(data) {
// Create base table
$("#content").removeClass("overlay-sidebar");
$('#sidebar_content').empty();
$('#sidebar_content').html(html);
// Add each row
var cumulative=0;
- for (var i=0; i<steps.length; i++) {
- var step=steps[i];
- var instCodes=step[0].split('-');
- // Assemble instruction text
- var instText="<b>"+(i+1)+".</b> ";
- instText+=TURN_INSTRUCTIONS[instCodes[0]];
- if (instCodes[1]) { instText+="exit "+instCodes[1]+" "; }
- if (instCodes[0]!=15) { instText+=step[1] ? "<b>"+step[1]+"</b>" : "(unnamed)"; }
+ for (var i=0; i<data.steps.length; i++) {
+ var step=data.steps[i];
// Distance
- var dist=step[2];
+ var dist=step[3];
if (dist<5) { dist=""; }
else if (dist<200) { dist=Math.round(dist/10)*10+"m"; }
else if (dist<1500) { dist=Math.round(dist/100)*100+"m"; }
else { dist=Math.round(dist/1000)+"km"; }
// Add to table
var row=$("<tr class='turn'/>");
- row.append("<td class='direction i"+instCodes[0]+"'> ");
- row.append("<td class='instruction'>"+instText);
+ row.append("<td class='direction i"+step[1]+"'> ");
+ row.append("<td class='instruction'>"+step[2]);
row.append("<td class='distance'>"+dist);
- with ({num: i, dist: step[3]}) {
- row.on('click',function(e) {
- r.clickTurn(num, r.polyline.getLatLngs()[dist]);
- });
+ with ({ num: i, ll: step[0] }) {
+ row.on('click',function(e) { r.clickTurn(num, ll); });
};
$('#turnbyturn').append(row);
- cumulative+=step[2];
+ cumulative+=step[3];
}
};
r.clickTurn=function(num,latlng) {
- L.popup().setLatLng(latlng).setContent("<p>"+(num+1)+"</p>").openOn(r.map);
+
r.popup=L.popup().setLatLng(latlng).setContent("<p>"+(num+1)+"</p>").openOn(r.map);
};
-
// Close all routing UI
r.close=function() {
$("#content").addClass("overlay-sidebar");
- if (r.polyline) map.removeLayer(r.polyline);
+ 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; }
+ }
};
- // 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>");
- };
+ // Routing engine handling
- // 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) {
- if (data.status==207) {
- alert("Couldn't find route between those two places");
- return false;
+ // Add all engines
+ var list=OSM.RoutingEngines.list;
+ list.sort(function(a,b) { return a.name>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);
+ };
+ r['gotRoute'+num]=function(data) { r.awaitingRoute=false; list[num].gotRoute(r,data); };
+ }
+ select.append("<option value='"+i+"'>"+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];
+ };
+ // 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);
}
- // *** store 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;
};
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