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?)
+
+ *** add YOURS engine
+ *** add GraphHopper 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.chosenEngine=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.viaPoints=[]; // not yet used
+ r.polyline=null; // Leaflet polyline object
+ r.chosenEngine=null; // currently selected routing engine
// 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); });
};
var lat=Number(json[0].lat), lon=Number(json[0].lon);
r[field.id]=[lat,lon];
// ** update markers
+ if (r.awaitingGeocode) {
+ r.awaitingGeocode=false;
+ r.requestRoute();
+ }
};
// Route-fetching UI
- r.selectEngine=function(e) {
- r.chosenEngine=r.engines[e.target.selectedIndex];
- };
r.requestRoute=function() {
if (r.route_from && r.route_to) {
r.chosenEngine.getRoute(true,[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.map.fitBounds(r.polyline.getBounds());
};
- // 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) {
if (r.polyline) map.removeLayer(r.polyline);
};
- // 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+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+"&jsonp=");
- },
- gotRoute: function(data) {
- if (data.status==207) {
- alert("Couldn't find route between those two places");
- return false;
- }
- // *** 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);
+ // Routing engine handling
+
+ // 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) { 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
- // CloudMade foot engine
- // *** again, this should be shared from a Cloudmade library somewhere
- // *** this API key is taken from some example code, not for real live use!
-
- r.addEngine({
- name: 'Foot (CloudMade)',
- draggable: true,
- getRoute: function(final,points) {
- var url="http://routes.cloudmade.com/8ee2a50541944fb9bcedded5165f09d9/api/0.3/";
- var p=[];
- for (var i=0; i<points.length; i++) {
- p.push(points[i][0]);
- p.push(points[i][1]);
+ // 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);
}
- url+=p.join(',');
- url+="/foot.js";
- this.requestJSONP(url+"?callback=");
- },
- gotRoute: function(data) {
- console.log(data);
- // *** todo
- // *** will require some degree of refactoring because instruction text is pre-assembled
- // *** otherwise largely like OSRM (funny that)
}
- });
-
- // *** add MapQuest
- // *** add YOURS
- // *** move into separate files
-
- r.chosenEngine=r.engines[0];
+ };
+
return r;
};
projects / rails.git / blobdiff