/* 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 *** click each part *** translation (including all alerts and presentation) *** export GPX *** URL history (or do we consciously not want to support that?) */ 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 }; 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); r.map.fitBounds(r.polyline.getBounds()); }; // Take an array of directions and write it out // (we use OSRM's route_instructions format) // *** translations? r.setItinerary=function(steps) { // Create base table $("#content").removeClass("overlay-sidebar"); $('#sidebar_content').empty(); var html='

Directions

'.replace(/~/g,"'"); html+=""; $('#sidebar_content').html(html); // Add each row var cumulative=0; for (var i=0; i "; instText+=TURN_INSTRUCTIONS[instCodes[0]]; if (instCodes[1]) { instText+="exit "+instCodes[1]+" "; } if (instCodes[0]!=15) { instText+=step[1] ? ""+step[1]+"" : "(unnamed)"; } // Distance var dist=step[2]; if (dist<5) { dist=""; } else if (dist<200) { dist=Math.round(dist/10)*10+"m"; } else if (dist<1500) { dist=Math.round(dist/100)*100+"m"; } else if (dist<5000) { dist=Math.round(dist/100)/10+"km"; } else { dist=Math.round(dist/1000)+"km"; } // Add to table var row=$(""); row.append("
"); row.append(""+instText); row.append(""+dist); with ({num: i, dist: step[3]}) { row.on('click',function(e) { r.clickTurn(num, r.polyline.getLatLngs()[dist]); }); }; $('#turnbyturn').append(row); cumulative+=step[2]; } }; r.clickTurn=function(num,latlng) { L.popup().setLatLng(latlng).setContent("

"+(num+1)+"

").openOn(r.map); }; // Close all routing UI r.close=function() { $("#content").addClass("overlay-sidebar"); 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+"&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(""); }; // 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