var map=null;var markers={};var mobile=false;var selected_id=null;var inset_id="";var cycle="20240321";var copyright=null;var current_map_type=null;var map_tiles={};var map_types={vfrc:{max_zoom:12,default_zoom:10},sectc:{max_zoom:11,default_zoom:10},helic:{max_zoom:13,default_zoom:10},ifrlc:{max_zoom:11,default_zoom:10},ehc:{max_zoom:10,default_zoom:9},osm:{max_zoom:15,default_zoom:9},"default":{default_zoom:10,clean_zoom:7}};function getMapTypeOption(a){if(map_types[current_map_type]&&map_types[current_map_type][a]){return map_types[current_map_type][a]}else{return map_types["default"][a]}}function handleMenuPulldown(){var b=document.getElementById("menu_pulldown");var a=b.options[b.selectedIndex].value;if(a=="about"){window.location.href="about.html"}else{if(a=="patreon"){window.location.href="http://patreon.com/vfrmap"}else{if(a=="help"){window.location.href="help.html"}else{if(a=="afd"){window.location.href="http://afdsearch.com"}else{if(a=="tpp"){window.location.href="http://tppsearch.com"}else{if(a=="wx"){window.location.href="http://wxbay.com"}else{setMapType(a);setStateCookie()}}}}}}}function initializeMapTiles(){for(var c in map_types){if(c=="default"){continue}var b={attribution:'&copy; <a href="about.html">2024 VFRMap.com</a> | <a href="http://www.patreon.com/vfrmap"><b><font color="red">Patreon</b></a>',maxZoom:map_types[c].max_zoom,id:c,tms:true};var a;if(c=="osm"){a="http://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png";b.attribution='&copy; <a href="https://www.openstreetmap.org/copyright">OpenStreetMap</a> contributors';b.tms=false}else{a="/"+cycle+"/tiles/"+c+"/{z}/{y}/{x}.jpg"}map_tiles[c]=L.tileLayer(a,b)}}function setMapType(a){if(current_map_type){map_tiles[current_map_type].removeFrom(map)}current_map_type=a;map_tiles[current_map_type].addTo(map)}function showMapType(){var b=document.getElementById("menu_pulldown");for(var a=0;a<b.options.length;a++){if(b.options[a].value==current_map_type){b.options[a].selected=true;break}}}function initialize(){var c=navigator.userAgent;var d=c.indexOf("Android")!=-1;var g=c.indexOf("iPhone")!=-1;var h=c.indexOf("iPad")!=-1;if(d||g||h){mobile=true}document.body.onunload=setStateCookie;var e=47.5;var a=-125;var i=10;map_type="vfrc";var b=getStateCookie();var f=parseURLParams();if(f){e=f.lat;a=f.lon;i=f.zoom;map_type=f.type}else{if(b){parts=b.split("|");e=parseFloat(parts[0]);a=parseFloat(parts[1]);i=parseInt(parts[2]);map_type=parts[3]}else{guessLocation()}}initializeMapTiles();map=L.map("map",{zoomControl:false},{attributionControl:false});map.setView([e,a],i);L.control.zoom({position:"topright"}).addTo(map);setMapType(map_type);showMapType();if(!b){setStateCookie()}map.on("moveend",updateMap);updateMap()}function updateMap(){setStateCookie();refreshMarkers()}var state_cookie="state";function getStateCookie(){if(document.cookie.length>0){start=document.cookie.indexOf(state_cookie+"=");if(start!=-1){start+=state_cookie.length+1;end=document.cookie.indexOf(";",start);if(end==-1){end=document.cookie.length}return document.cookie.substring(start,end)}}return null}function setStateCookie(){var d=current_map_type;var b=new Date();var a=new Date(b.getTime()+30*86400*1000);var c=state_cookie+"="+map.getCenter().lat+"|"+map.getCenter().lng+"|"+map.getZoom()+"|"+d+";expires="+a.toGMTString();document.cookie=c}function parseURLParams(){try{var a=new Object();var f=window.location.href.split("?")[1].split("&");for(var b=0;b<f.length;b++){var d=f[b].split("=");a[d[0]]=d[1]}a.lat=parseFloat(a.lat);a.lon=parseFloat(a.lon);if(isNaN(a.lat)||isNaN(a.lon)){return null}a.zoom=parseInt(a.zoom);if(isNaN(a.zoom)){a.zoom=10}else{a.zoom=Math.min(Math.max(a.zoom,1),12)}if(!map_types[a.type]){a.type="vfrc"}return a}catch(c){return null}}function fetch(url,callback){var http_request;try{http_request=new ActiveXObject("Microsoft.XMLHTTP")}catch(e){http_request=new XMLHttpRequest()}http_request.onreadystatechange=function(){if(http_request.readyState==4){eval(callback(http_request))}};http_request.open("GET",url,true);http_request.send(null)}function refreshMarkers(){if(map.getZoom()<=getMapTypeOption("clean_zoom")){updateMarkers([]);return}var e=map.getBounds();var b=e.getSouthWest();var g=e.getNorthEast();var d=map.getContainer().clientWidth;var a=map.getContainer().clientHeight;var f=Math.round(50*map.getContainer().clientWidth*map.getContainer().clientHeight/1000000);if(mobile){f=Math.min(40,Math.max(15,f))}else{f=Math.min(100,Math.max(20,f))}var c="/fe?req=get_airports&bounds="+b.lng+","+b.lat+","+g.lng+","+g.lat+"&num="+f;fetch(c,processGetAirportsResponse)}function processGetAirportsResponse(request){if(request.status!=200){return}response=eval("("+request.responseText+")");updateMarkers(response.airports)}function addMarker(h){if(markers[h.id]){return}var c="images/marker_blue.png";if(h.id==selected_id){c="images/marker_red.png"}var f=4;var a="padding_4px";if(mobile){f=15;a="padding_15px"}var e=8;var g=e/2+f;var d=L.icon({iconUrl:c,iconSize:[e,e],iconAnchor:[g,g],className:a});var b=L.marker([h.lat,h.lon],{icon:d});b.airport=h;b.on("click",getMarkerOnClickClosure(h));markers[h.id]=b;b.addTo(map)}function removeMarker(a){if(markers[a]){markers[a].removeFrom(map);delete markers[a]}}function updateMarkers(b){var c=new Object();for(var a=0;a<b.length;a++){c[b[a].id]=1}for(var d in markers){if(selected_id==d){continue}if(!c[d]){removeMarker(d)}}for(var a=b.length-1;a>=0;a--){addMarker(b[a])}}function getMarkerOnClickClosure(a){return function(){var b=document.getElementById("inset");var d=document.getElementById("map");if(b.className.indexOf("visible")!=-1&&a.id==inset_id){b.className="inset_hidden";b.innerHTML="";return}inset_id=a.id;b.innerHTML='<p><span style="background-color: #fff">&#x274e; &nbsp; '+(mobile?"Tap":"Click")+' anywhere in this window to <b>close</b> it.</span><p>See <a target=_airnav href="http://www.airnav.com/airport/'+a.id+'">more information</a> for '+a.id+'</a> on AirNav.com</p><div id=awx></div><p style="background-color: #ffcccb">Please help keep VFRMap ad-free by supporting the site on <a href="http://www.patreon.com/vfrmap"><b>Patreon</b></a>. Thank you!</p><img src="'+cycle+"/afd/"+a.region+"/"+a.id+'_afd.png"><p><a class="link-btn" target=_new href="/fe?req=get_tpp&q='+a.id+'">Instrument Procedures</a> <a class="link-btn" target=_new href="/fe?req=get_wx&q='+a.id+'">Nearby METARs / TAFs</a><br><br>';if(mobile){b.className="inset_visible_mobile";d.style.visibility="hidden"}else{b.className="inset_visible"}b.onclick=function(){b.className="inset_hidden";b.innerHTML="";if(mobile){d.style.visibility="visible"}};if("faa_video" in a){b.innerHTML+='<p><iframe width="560" height="315" src="'+a.faa_video+'" frameborder="0"></iframe><br><a target=_new href="https://www.faa.gov/airports/runway_safety/videos">[ video source ]</a>'}var c="/fe?req=get_awx&id="+a.id;fetch(c,processAWXResponse)}}function processAWXResponse(request){if(request.status!=200||request.responseText.indexOf("error")!=-1){return}var response=eval("("+request.responseText+")");var wx="";if(response.metar){wx=wx+response.metar+"<br><br>"}if(response.taf){wx=wx+response.taf+"<br><br>"}if(wx){var awx=document.getElementById("awx");if(awx){awx.innerHTML=wx}}}function search(){var b=document.getElementById("query_box").value;if(b.length==0){selectAirport(null);return}var a="/fe?req=locate&q="+b;fetch(a,processLocateResponse)}function selectAirport(a){if(selected_id){removeMarker(selected_id)}if(a){removeMarker(a.id);selected_id=a.id;addMarker(a)}else{selected_id=null}}function processLocateResponse(request){if(request.status!=200){alert("Request failed");selectAirport(null);refreshMarkers();return}var response=eval("("+request.responseText+")");if(!response.lat||!response.lon){alert("Airport not found.\nTry searching by:\n\n- airport code: BFI or KBFI\n- airport name: Paine Field\n- city name: Seattle\n- state: CA\n- a combination of the above.");selectAirport(null);refreshMarkers();return}selectAirport(response);map.setView([response.lat,response.lon],getMapTypeOption("default_zoom"))}function guessLocation(){var a="/fe?req=locate_ip";fetch(a,processLocateIPResponse)}function processLocateIPResponse(request){if(request.status==200){var response=eval("("+request.responseText+")");if(response.lat&&response.lon){map.setView([response.lat,response.lon],10);return}}map.setView([47.5,-122.3],10)};