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tracker2.html
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tracker2.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta name="author"
content="Geoff R. McLane">
<meta charset="UTF-8">
<title>
2D FG Tracker
</title><!--
20140909 - Version 0.0.1 - Show the 'track' given a flight id
-->
<style type="text/css">
html, body, #basicMap {
margin: 0;
width: 100%;
height: 100%;
}
#status_flights {
position: absolute;
font-size: 12px;
bottom: 1em;
left: 10em;
width: 86%;
z-index: 1000;
vertical-align: middle;
border: 1px solid #000000;
background: url('images/background_trans.png');
}
.p.nob {
border: 0;
padding: 0;
}
#centerAir {
position: absolute;
bottom: 3em;
left: 1em;
z-index: 1000;
<!-- border: 2px solid #FF0000; -->
}
.sz4redb {
font-size : 18pt;
color : #ff0000;
font-family : Arial;
font-weight : bold;
}
.ctr {
vertical-align: middle;
text-align : center;
}
</style>
<script src="js/OpenLayers.js"
type="text/javascript">
</script>
<script src="js/jquery-2.0.3.js"
type="text/javascript">
</script>
<script src="js/geodesic.js"
type="text/javascript">
</script>
<script src="js/utils.js"
type="text/javascript">
</script>
<script type="text/javascript">
// CONSTANTS
// 1 knot (kt) = 1.85200 kilometer per hour (kph)
var KTS2KPH = 1.85200;
var NM2KM = 1.852;
var startTime = new Date();
var FGx = FGx || {};
// maybe these should be configurabale
var pred_secs = 5 * 60; // was 120; // length of prediction path
var add_marker = false;
var add_helipads = true;
var show_waiting = false; // mainly a http callback diagnostic
var upd_to_log = false;
var feed_ms = 1800;
var json_url = 'http://crossfeed.freeflightsim.org/flights.json';
var close_nm = 100; // paint close planes within this range (nm)
var done_init = false;
var live_count = 0;
var live_max = 3;
// program variables
var def_lat = 52.32;
var def_lon = 13.41;
var def_zoom = 12; // hard to choose then best init zoom
// TODO: maybe store the last zoom in a cookie, and use that?
// initial parameters - never changed
var m_fid, m_callsign, m_model, m_lat, m_lon, m_hdg, m_spd, m_zoom;
// current parameter - this update
var c_lat, c_lon, c_hdg, c_spd, c_alt, c_date;
// previous parameter - from the above at update
var p_lat, p_lon, p_hdg, p_spd, p_alt, p_date;
var calc_dist = 0;
var fromProjection, toProjection, markerLayer, lineLayer, circleLayer, vectorLayer;
var pointLayer, trackLayer; // for historic track
var ILSLayer;
var m_ilat, m_ilon, dest_lat, dest_lon, curr_zoom;
var lineFeat2 = null;
var update_msg = '';
var circle_style = {
strokeColor: '#0000ff',
strokeOpacity: 0.5,
strokeWidth: 2,
fill: false
};
var red_style = {
strokeColor: '#ff0000',
strokeOpacity: 0.5,
strokeWidth: 2,
fill: false
};
var vor_style = {
strokeColor: '#ff0000',
strokeOpacity: 0.5,
strokeWidth: 2,
fill: false
};
var ndb_style = {
strokeColor: '#a0000ff',
strokeOpacity: 0.2,
strokeWidth: 1,
fill: true
};
var nav_style = {
strokeColor: '#000000',
strokeOpacity: 0.8,
strokeWidth: 2,
fill: false
};
// Heliport
var green_style = {
strokeColor: '#004000',
strokeOpacity: 0.5,
strokeWidth: 2,
fill: false
};
var blue_style = {
strokeColor: '#0000ff',
strokeOpacity: 0.5,
strokeWidth: 2,
fill: false
};
var ils_style = {
strokeColor: '#ff0000',
strokeOpacity: 0.5,
strokeWidth: 1
};
var curr_lat1, curr_lon1, curr_lat2, curr_lon2; // current bound of map
var airFound = []; // indexes of airports found in blunds
var airPainted = [];
var heliFound = [];
var heliPainted = [];
var navFound = [];
var navPainted = []; // indexes painted
var doneAir = false;
var doneNav = false;
var doneHeli = false;
var icaoFound = []; // icao files to load
var ilsPainted = [];
// ondemand loading of ICAO.json
var jsonLoaded = {}; // loaded json ICAO files
var icaoDone = []; // do not repeatedly load a failed file
var icaoRequests = 0; // requests for ICAO.json
var plane, air_icon, close_icon;
var center_aircraft = true;
var done_flights_json = false;
var done_tracker_json = false;
var tr_start; // start time to get FGTracker flight data
function valInArray(s,a ) {
var i, t;
var max = a.length;
for (i = 0; i < max; i++) {
t = a[i];
if ( s == t )
return true;
}
return false;
}
function centAir(val) {
center_aircraft = val;
}
function init(fid,callsign,model,lon,lat,alt,hdg,spd,zoom) {
if (done_init) {
return;
}
done_init = true;
FGx.callbackCount = 0;
FGx.airports = [];
FGx.helipads = [];
FGx.navaids = [];
doneAir = false;
doneNav = false;
doneHeli = false;
airFound = []; // index of airports found in bounds
// set some defaults, required to create the map
if (lat.length == 0) { lat = def_lat; }
if (lon.length == 0) { lon = def_lon; }
if (zoom.length == 0) { zoom = def_zoom; }
if (hdg.length == 0) { hdg = 0; }
if (spd.length == 0) { spd = 0; }
// others can be undefinded
//if (fid.length)
// m_fid = fid;
//else
// m_fid = 'not_defined'; // of course this means the flight is NOT found later
if (callsign.length)
m_callsign = callsign;
else
m_callsign = 'not_defined';
if (model.length)
m_model = model;
else
m_model = 'not_defined';
// these have been checked and validated
// keep initial values
m_spd = spd;
m_hdg = hdg;
m_lat = lat;
m_lon = lon;
m_alt = alt;
// startTime already kept
m_ilat = lat;
m_ilon = lon;
m_zoom = zoom;
c_spd = spd;
c_hdg = hdg;
c_lat = lat;
c_lon = lon;
c_alt = alt;
c_date = startTime;
p_spd = spd;
p_hdg = hdg;
p_lat = lat;
p_lon = lon;
p_alt = alt;
p_date = startTime;
document.title = "Tracking "+fid;
fromProjection = new OpenLayers.Projection("EPSG:4326"); // Transform from WGS 1984
toProjection = new OpenLayers.Projection("EPSG:900913"); // to Spherical Mercator Projection
map = new OpenLayers.Map("basicMap", {
projection: new OpenLayers.Projection("EPSG:3857"),
// this sets wgs84/4326 as default for display coords
displayProjection: new OpenLayers.Projection("EPSG:4326") });
var mapnik = new OpenLayers.Layer.OSM();
var position = new OpenLayers.LonLat(lon,lat).transform( fromProjection, toProjection);
map.addLayer(mapnik);
map.addControl(new OpenLayers.Control.Permalink('permalink'));
map.addControl(new OpenLayers.Control.MousePosition());
map.addControl(new OpenLayers.Control.ScaleLine());
map.addControl(new OpenLayers.Control.LayerSwitcher());
// add a marker to the initial position
markerLayer = new OpenLayers.Layer.Markers( "Marker Layer" );
//markerLayer.setOpacity(0.3); // guestimate only
map.addLayer(markerLayer);
ILSLayer = new OpenLayers.Layer.Vector("ILS Layer");
map.addLayer(ILSLayer);
//map.addControl(new OpenLayers.Control.DrawFeature(lineLayer, OpenLayers.Handler.Path));
// add circles - DID NOT WORK
// circleLayer = new OpenLayers.Layer.Vector("Circles");
// map.addLayer(circleLayer);
// circleLayer.addPolygon(circle);
vectorLayer = new OpenLayers.Layer.Vector("Airport Layer");
map.addLayer(vectorLayer);
var labelStyle = new OpenLayers.Style(
{
externalGraphic: "images/background_trans.png",
//externalGraphic: "images/label_background.gif",
graphicWidth: "${labelWidth}",
graphicHeight: "13",
graphicOpacity: 0.99,
graphicXOffset: "${labelOffset}",
graphicYOffset: 14,
fillColor: "#000000",
fillOpacity: 0.0,
strokeWidth: 0.0,
label : "${icao}",
//fontColor: "#CCCCCC",
fontColor: "#000000",
fontSize: "11px",
fontFamily: "\"DejaVuSansMonoBold\",monospace",
fontWeight: "normal",
labelAlign: "center",
labelXOffset: "0",
labelYOffset: "-22"
}
);
airportLabel = new OpenLayers.Layer.Vector("Label Layer", {styleMap: labelStyle});
map.addLayer(airportLabel);
if (add_marker) {
// add a big fat 'marker;' to initial position - classic style, except above setOpacity(0-1);
var mark = new OpenLayers.Marker(position);
markerLayer.addMarker(mark);
} else { // or a small circle, BUT this seems to FAIL????
//var vectorLayer = new OpenLayers.Layer.Vector("Overlay");
//map.addLayer(vectorLayer);
var radius = 1000; // TODO: what SIZE should the circle be? probably should DEPEND on zoom???
var sides = 30; // docs say '20 approximates a circle'... so ...
var point = new OpenLayers.Geometry.Point(position.lon, position.lat);
var circle = OpenLayers.Geometry.Polygon.createRegularPolygon(
point,
radius,
sides,
0 );
// circleLayer.addPolygon(circle); // THIS FAILED!!!
// lineFeat2 = new OpenLayers.Feature.Vector(line2, null, style2);
// var featurecircle = new OpenLayers.Feature.Vector(circle); // default is borwn, filled circle, so
// add blue, non-filled circle... TODO: Add user configuration...
var featurecircle = new OpenLayers.Feature.Vector(circle, null, circle_style);
vectorLayer.addFeatures([featurecircle]);
}
// to add line drawing
lineLayer = new OpenLayers.Layer.Vector("Line Layer");
map.addLayer(lineLayer);
// for historic tacker info
pointLayer = new OpenLayers.Layer.Vector("Point Layer");
map.addLayer(pointLayer);
trackLayer = new OpenLayers.Layer.Vector("Track Layer");
map.addLayer(trackLayer);
map.setCenter(position, zoom );
// add the predicted path
//if (spd > 10) // no, causes a problem???
// add_predicted( lat, lon, hdg, spd );
map.events.register('zoomend', undefined, zoomChanged);
map.events.register('moveend', undefined, moveEnded);
// add label at initial position
addLabel(callsign, lon, lat);
var air_size = new OpenLayers.Size(40,40);
var air_off = new OpenLayers.Pixel(-(air_size.w/2), -air_size.h/2);
air_icon = new OpenLayers.Icon('textures/fg_generic_red.gif',air_size,air_off);
close_icon = new OpenLayers.Icon('textures/fg_generic_blue.gif',air_size,air_off);
plane = new OpenLayers.Marker(position, air_icon);
// from : http://coherent-labs.com/cryengine-3-minimap-made-with-coherent-ui/
// plane.icon.imageDiv.style.webkitTransform = "rotate(" + hdg + "deg)";
var obj = plane.icon.imageDiv.style;
set_orientation( obj, hdg );
markerLayer.addMarker(plane);
// TODO: Start adding airports, runways, ILS, navaids
//setGlobalBounds(); // establish BOUND of current map
//getAirports(); // start load airports, helipads, navaids, then ICAO.json, THEN get mamserver15 tracker
} // end init()
// blue track style
var style = {
strokeColor: '#0000ff',
strokeOpacity: 0.5,
strokeWidth: 3
};
// red predicted track style for next ?? secs
var style2 = {
strokeColor: '#FF0000',
strokeOpacity: 0.5,
strokeWidth: 2
};
var closePlanes = [];
var paintedPlanes = [];
var paintedFeatues = [];
/**
* add a predicted track
* calculated and painted as a red line
*/
function add_predicted( lat, lon, hdg, spd ) {
var secs = pred_secs;
if (curr_zoom < 8)
secs *= 4;
var dist_km = spd * KTS2KPH * (secs / 3600);
var p = getDirect( lat, lon, hdg, dist_km );
dest_lat = p._lat;
dest_lon = p._lon;
var point2 = new Array(
new OpenLayers.Geometry.Point(lon, lat).transform( fromProjection, toProjection ),
new OpenLayers.Geometry.Point(dest_lon, dest_lat).transform( fromProjection, toProjection )
);
var line2 = new OpenLayers.Geometry.LineString(point2);
if (lineFeat2 !== null) {
// remove last pediction line
lineLayer.removeFeatures([lineFeat2]);
}
lineFeat2 = new OpenLayers.Feature.Vector(line2, null, style2);
lineLayer.addFeatures([lineFeat2]);
}
function update_position(lat,lon,hdg,alt,spd) {
curr_zoom = map.getZoom();
markerLayer.removeMarker(plane); // remove last plane marker
var points = new Array(
new OpenLayers.Geometry.Point(p_lon, p_lat).transform( fromProjection, toProjection ),
new OpenLayers.Geometry.Point(lon, lat).transform( fromProjection, toProjection )
);
var line = new OpenLayers.Geometry.LineString(points);
var lineFeature = new OpenLayers.Feature.Vector(line, null, style);
lineLayer.addFeatures([lineFeature]);
// save to previous
p_lon = c_lon;
p_lat = c_lat;
p_hdg = c_hdg;
p_spd = c_spd;
p_alt = c_alt;
p_date = c_date;
c_lon = lon;
c_lat = lat;
c_hdg = hdg;
c_alt = alt;
c_spd = spd;
c_date = new Date();
// project the flight forward for the next ?, say 30 seconds
if (spd > 10) {
add_predicted( lat, lon, hdg, spd );
}
// move plane
var lonlat = new OpenLayers.LonLat(lon,lat).transform( fromProjection, toProjection );
plane = new OpenLayers.Marker(lonlat, air_icon);
if (p_hdg != c_hdg) { // maybe (if (abs(p_hdg-c_hdg) > 0.1) or something
// plane.icon.imageDiv.style.webkitTransform = "rotate(" + c_hdg + "deg)";
var obj = plane.icon.imageDiv.style;
set_orientation( obj, c_hdg );
}
markerLayer.addMarker(plane);
if (center_aircraft)
map.setCenter( lonlat, curr_zoom );
}
function add_nearby(data,lat,lon,fid) {
var max, i, pln, flt;
// could maybe move and re-orient, rather than delete
max = paintedPlanes.length;
for (i = 0; i < max; i++) {
pln = paintedPlanes[i];
markerLayer.removeMarker(pln); // remove last plane marker
}
paintedPlanes = [];
var dist = close_nm * NM2KM; // dist from tracked object, in km
var p1 = getDirect(lat,lon,0,dist);
var p2 = getDirect(lat,lon,90,dist);
var p3 = getDirect(lat,lon,180,dist);
var p4 = getDirect(lat,lon,270,dist);
// TODO: Maybe this BBOX could be reduce to the visible screen,
closePlanes = [];
$(data.flights).each(function (i) {
var tfid = this.fid;
if (tfid != fid) {
var tlat = this.lat;
var tlon = this.lon;
if ((tlat <= p1._lat) && (tlat >= p3._lat) &&
(tlon <= p2._lon) && (tlon >= p4._lon)) {
closePlanes.push(this);
}
}
});
max = closePlanes.length;
for (i = 0; i < max; i++) {
flt = closePlanes[i];
var lonlat = new OpenLayers.LonLat(flt.lon,flt.lat).transform( fromProjection, toProjection );
pln = new OpenLayers.Marker(lonlat, close_icon);
// pln.icon.imageDiv.style.webkitTransform = "rotate(" + flt.hdg + "deg)";
var obj = pln.icon.imageDiv.style;
set_orientation( obj, flt.hdg );
markerLayer.addMarker(pln);
paintedPlanes.push(pln);
}
//if (max) console.log("painted "+max+" close planes");
}
// *** json data stuff ************************************************************************
function workData() {
// we do not care about the "success" label, we check for
// request loading state directly
if ((this.readyState == 4) && (this.status == "200")) {
// JSON parsing the response string
var found = false;
var lon, lat, hdg, alt, spd;
var data = JSON.parse(this.responseText);
$(data.flights).each(function (i) {
var fid = this.fid;
// var cs = this.callsign;
// var model = this.model;
// I guess checking the fid should be enough
if (fid == m_fid) {
lon = this.lon;
lat = this.lat;
hdg = this.hdg;
alt = this.alt_ft;
spd = this.spd_kts;
found = true;
return false; // out of here - found ourselves
}
});
curr_zoom = map.getZoom();
if (found) {
// want to find nearby aircraft
add_nearby(data,lat,lon,m_fid);
update_position(lat,lon,hdg,alt,spd);
var d = new Date();
var ms = d.valueOf() - startTime.valueOf();
var elap = ms2hhmmss(ms);
var ccnt = paintedPlanes.length; // planes 'close' to the tracker
update_msg = m_callsign+':'+m_model+': llahs='+lon+','+lat+','+alt+','+hdg+','+spd;
if (ccnt)
update_msg += ',c='+ccnt;
update_msg += ',z='+curr_zoom+' '+elap;
if (upd_to_log) console.log(update_msg);
$("#status_flights").html(update_msg);
setTimeout("sendRequest('http://crossfeed.freeflightsim.org/flights.json')", feed_ms)
} else {
// no longer in the data - flight ended - what to do - close window???
update_msg = "Update: fid="+m_fid+":"+m_callsign+":"+m_model+": NO LONGER IN DATA! flight ended.";
console.log(update_msg);
$("#status_flights").html("<strong>"+update_msg+"<\/strong>");
// TODO: Decide whether to CLOSE the window... maybe not
// alert(update_msg+"\r\nSuggest window be CLOSED!\r\nNo further updates will be added.");
}
}
}
// XMLHttpRequest handling
function getXMLHttpRequest() {
var httpReq = null;
if (window.XMLHttpRequest) {
httpReq = new XMLHttpRequest();
}
else if (typeof ActiveXObject != "undefined") {
httpReq = new ActiveXObject("Microsoft.XMLHTTP");
}
return httpReq;
}
function sendRequest2( url, callback ) {
var req = getXMLHttpRequest();
req.onreadystatechange = callback;
req.open("GET", url)
req.send(null);
}
function sendRequest(url) {
sendRequest2( url, workData );
}
// *** end jason data *************************************************************************
// miscellanious
function zoom2Radius(z) {
var rad = 50000;
var d, f, l, m;
if (z < 6) {
d = (6 - z);
l = Math.log(d);
m = Math.pow(2,l) * 2;
//m = Math.pow(2,d);
//f = d * 2;
f = d * m;
//f = d * d * 2;
rad *= f;
} else if (z > 6) {
d = (z - 6);
l = Math.log(d);
m = Math.pow(2,l) * 2;
//m = Math.pow(2,d);
f = d * m;
//f = d * d * 2;
rad /= f;
}
return rad;
}
function ms2hhmmss( ms ) {
if (ms < 1000) {
return ''+ms+' ms';
}
var secs = Math.floor( ms / 1000 );
ms -= (secs * 1000);
if (secs < 60) {
var stg = ''+((ms / 1000).toFixed(2));
stg = stg.substr(1); // drop the zero
return ''+secs+stg+' secs';
}
var mins = Math.floor(secs / 60);
secs -= (mins * 60);
if (ms > 500)
secs++;
if (secs >= 60) {
secs -= 60;
mins++;
}
if (mins < 60) {
if (secs < 10)
secs = '0'+secs;
return ''+mins+':'+secs+' mm:ss';
}
var hours = Math.floor(mins / 60);
mins -= (hours * 60);
if (mins < 10)
mins = '0'+mins;
if (secs < 10)
secs = '0'+secs;
return ''+hours+':'+mins+':'+secs+' hh:mm:ss';
}
/**
* function requestFile( fname, callback );
* @param (string) File or url to load
* @param (function) Callback funtion on state change
* ========== load data files ========
*/
function requestFile( fname, callback ) {
var xmlhttp = new XMLHttpRequest();
xmlhttp.open( 'GET', fname, true );
xmlhttp.onreadystatechange = callback;
xmlhttp.send( null );
}
/**
* Object.size = function(obj)
* @param (object) Object to get the size of
* @return (int) Length of the object
*/
Object.size = function(obj) {
var size = 0, key;
for (key in obj) {
if (obj.hasOwnProperty(key)) size++;
}
return size;
};
// === status line display ===
/**
* function showStatus();
* Add some information to the status line
*/
function showStatus() {
var acntl = FGx.airports.length;
var acntf = airFound.length;
var acntp = airPainted.length;
var hcntl = FGx.helipads.length;
var hcntf = heliFound.length;
var hcntp = heliPainted.length;
var ncntl = FGx.navaids.length;
var ncntf = navFound.length;
var ncntp = navPainted.length;
var icntf = icaoFound.length;
var ccntp = paintedPlanes.length;
var jcnt = Object.size(jsonLoaded);
var z = map.getZoom();
// see how long all that took
var d = new Date();
var ms = d.valueOf() - startTime.valueOf();
var elap = ms2hhmmss(ms);
//var stg = ""+lat1+","+lon1+","+lat2+","+lon2;
var msg = "Loaded "+acntl+" airports f/p="+acntf+"/"+acntp;
msg += ", "+hcntl+" heli f/p="+hcntf+"/"+hcntp;
msg += ", "+ncntl+" navaids f/p="+ncntf+"/"+ncntp;
if (icntf)
msg += ", icao "+icntf;
if (jcnt)
msg += ", json "+jcnt;
if (ccntp)
msg += ", close "+ccntp;
msg += ", z="+z;
msg += ' '+elap;
$("#status_flights").html(msg);
// console.log(msg);
}
// === end status line ===
// === get airports and navaids ===
/**
* function addLabel(icao, lon, lat);
* @param (string) ICAO to paint
* @param (number) Degree of longitude
* @param (number) Degree of latitude
* Add a label for an airport contianing ICAO
*/
function addLabel(icao, lon, lat) {
var point = new OpenLayers.Geometry.Point(lon,lat).transform( fromProjection, toProjection);
var labelFeature = new OpenLayers.Feature.Vector(point);
labelFeature.id = "label"+icao;
labelFeature.attributes.icao = icao;
// This calculates label background width and offset
labelWidth = 8 * icao.length;
labelOffset = labelWidth / 2 * -1.0;
labelFeature.attributes.labelWidth = labelWidth;
labelFeature.attributes.labelOffset = labelOffset;
airportLabel.addFeatures([labelFeature]);
return labelFeature;
}
/**
* function getNavPosition(i)
* @param (integer) Index into navaids loaded
* @return (LonLat) OpenLayers LonLat of navaid
*/
function getNavPosition(i) {
var nav = FGx.navaids[i];
var nlat = parseFloat(nav[1]);
var nlon = parseFloat(nav[2]);
var pos = new OpenLayers.LonLat(nlon,nlat).transform( fromProjection, toProjection );
return pos;
}
function paintLine( lat1, lon1, lat2, lon2, style )
{
var points = new Array(
new OpenLayers.Geometry.Point(lon1,lat1).transform( fromProjection, toProjection ),
new OpenLayers.Geometry.Point(lon2,lat2).transform( fromProjection, toProjection )
);
var line = new OpenLayers.Geometry.LineString(points);
var lineFeature = new OpenLayers.Feature.Vector(line, null, style);
lineLayer.addFeatures([lineFeature]);
}
function paintVORRose( nlat, nlon ) {
var p1, p2, hdg, dist1, dist2;
dist1 = 3.25;
dist2 = 0.4;
for (hdg = 0; hdg < 360; hdg += 10) {
if ((hdg == 0)||(hdg == 90)||(hdg == 180)||(hdg == 270))
dist2 = 0.4;
else
dist2 = 3.0;
p1 = getDirect( nlat, nlon, hdg, dist1 ); // outter point
p2 = getDirect( nlat, nlon, hdg, dist2 ); // inner point
paintLine( p2._lat, p2._lon, p1._lat, p1._lon, blue_style );
}
}
function paintNDBRose( nlat, nlon ) {
var p1, p2, hdg, dist1, dist2;
dist1 = 3.25;
dist2 = 0.4;
for (hdg = 0; hdg < 360; hdg += 45) {
if ((hdg == 0)||(hdg == 90)||(hdg == 180)||(hdg == 270))
dist2 = 0.4;
else
dist2 = 3.0;
p1 = getDirect( nlat, nlon, hdg, dist1 ); // outter point
p2 = getDirect( nlat, nlon, hdg, dist2 ); // inner point
paintLine( p2._lat, p2._lon, p1._lat, p1._lon, blue_style );
}
}
/**
* function paintNavaids( navs );
* @param (array) Navaids found in bounding box
* Add a display of certain types of navaids onto the map
* TODO: Lots of experimenting... ended up just adding an image in most cases
*/
function paintNavaids( navs ) {
var cnt = navs.length;
var i, j, pos, ind, typ, nav;
var icon, marker;
var point, circle, featurecircle;
var nlat, nlon;
var z = map.getZoom();
//if (z < 5) {
// return 0;
//}
var radius = 500; // TODO: what SIZE should the circle be? probably should DEPEND on zoom???
var sides = 20; // docs say '20 approximates a circle'... so ...
var style = circle_style;
var add = true;
var img = '';
var painted = 0;
var done = false;
for (i = 0; i < cnt; i++) {
ind = navs[i];
if (valInArray(ind,navPainted))
continue;
nav = FGx.navaids[ind];
typ = parseInt(nav[0]);
nlat = parseFloat(nav[1]);
nlon = parseFloat(nav[2]);
pos = getNavPosition(ind);
radius = 200;
style = nav_style;
add = true;
img = '';
done = false;
if (typ == 2) {
if (z < 8)
img = 'NDB-50x50.gif';
else
img = 'NDB-95x95.gif';
//markerLayer.addMarker(new OpenLayers.Marker(pos,ndb_icon.clone));
radius = 400;
style = ndb_style;
//style = circle_style;
add = false;
} else if (typ == 3) {
// Three types of VOR, VORTAC, VOR-DME, and good old VOR - check name
//markerLayer.addMarker(new OpenLayers.Marker(pos,vor_icon.clone));
radius = 500;
style = vor_style;
if (z < 8)
img = 'VOR-50x43.gif'; // 'standard' VOR
else
img = 'VOR-95x83.gif'; // 'standard' VOR
var name = nav[10]; // get the 'name'
var fnd = name.match(/VORTAC/g);
if (fnd !== null) {
if (z < 8)
img = 'VORTAC-50x43.gif';
else
img = 'VORTAC-97x85.gif';
} else {
fnd = name.match(/DME/g);
if (fnd !== null) {
if (z < 8)
img = 'VOR-DME-50x43.gif';
else
img = 'VOR-DME-95x83.gif';
}
}
add = false;
} else if ((typ == 4)||(typ == 5)||(typ == 6)) {
// Localiser and Glideslope components of ILS (LDA, SDF)
// this will come from the ICAO.json file
add = false;
} else if ((typ == 7)||(typ == 8)||(typ == 9)) {
// OM, MM, IM markers
radius = 200;
style = nav_style;
if (z > 7) {
if (typ == 7)
img = 'OM.png';
else if (typ == 8)
img = 'MM.png';
else
img = 'IM.png';
}
add = false;
} else if (typ == 12) {
// DME of ILS
radius = 600;
style = circle_style;
add = false;
} else if (typ == 13) {
radius = 600;
style = circle_style;
add = false;
}
done = false;
if (img.length) {
icon = new OpenLayers.Icon('img/'+img);
marker = new OpenLayers.Marker(pos, icon);
markerLayer.addMarker(marker);
painted++;
done = true;
} else if (add) {
point = new OpenLayers.Geometry.Point(pos.lon, pos.lat);
circle = OpenLayers.Geometry.Polygon.createRegularPolygon(
point,
radius,
sides,
0 );
featurecircle = new OpenLayers.Feature.Vector(circle, null, style);
vectorLayer.addFeatures([featurecircle]);
painted++;
done = true;
}
if (done) {
radius = 600;
if ((typ == 2)||(typ == 3))
style = blue_style;
else
style = red_style;
point = new OpenLayers.Geometry.Point(pos.lon, pos.lat);
circle = OpenLayers.Geometry.Polygon.createRegularPolygon(
point,
radius,
sides,
0 );
featurecircle = new OpenLayers.Feature.Vector(circle, null, style);
if (z >= 8)
vectorLayer.addFeatures([featurecircle]);
if ((typ == 2)||(typ == 3)) {
radius = 5000; // this should be according to the range maybe, and/or zoom
style = blue_style;
point = new OpenLayers.Geometry.Point(pos.lon, pos.lat);
circle = OpenLayers.Geometry.Polygon.createRegularPolygon(
point,
radius,
sides,
0 );
featurecircle = new OpenLayers.Feature.Vector(circle, null, style);
//if (typ == 3) {
if (z >= 8) {
vectorLayer.addFeatures([featurecircle]);
if (typ == 3)
paintVORRose( nlat, nlon );
else
paintNDBRose( nlat, nlon );
}
}
}
navPainted.push(ind);
}
return painted;
}
/**
* function searchNavAids( lat1, lon1, lat2, lon2, type );
* @param (Float) Degrees of hightest (N) latitude
* @param (Float) Degrees of least (W) longitude
* @param (Float) Degrees of lowest (S) latitude
* @param (Float) Degrees of most (E) longitude
* examples nav csv
* 0 1 2 3 4 5 6 7 8 9 10
* 4,39.98091100,-075.87781400,660,10850,18,281.662, IMQS,40N, 29,"ILS-cat-I"
* 6,42.88151400,129.43913900, 624,10870,10,300081.620,IJA, ZYYJ,09,"GS"
* 7,39.96071900,-075.75077800,660,0, 0, 281.662 ,----,40N, 29,"OM"
* 9,30.56114200,103.93897200,1624,0, 0, 21.873 ,----,ZUUU,02,"IM"
*/
function searchNavAids( lat1, lon1, lat2, lon2 ) {
var max = FGx.navaids.length;
var i, nav, nlat, nlon, type, icao;
newFound = [];
for (i = 1; i < max; i++) {
nav = FGx.navaids[i];
nlat = parseFloat(nav[1]);
nlon = parseFloat(nav[2]);
if ((nlat <= lat1)&&(nlat >= lat2)&&
(nlon >= lon1)&&(nlon <= lon2)) {
if (valInArray(i,navFound)) {
// already in list
} else {
navFound.push(i); // just need an index
newFound.push(i);
type = parseInt(nav[0]);
if ((type >= 4)&&(type <= 9)) {
// these have an ICAO
icao = nav[8];
if (icao.length && !valInArray(icao,icaoFound))
icaoFound.push(icao);
}
}
}
}
return newFound; // return the found
}
function callbackNavaids() {
if ( this.readyState == 4 ) {
var dataLines = this.responseText;
dataLines = dataLines.split(/\r\n|\n/);
var max = dataLines.length;
var separator = ',';
for ( var i = 1; i < max; i++ ) {
FGx.navaids.push( dataLines[i].split( separator ) );
}
max = FGx.navaids.length;
var nava = searchNavAids( curr_lat1, curr_lon1, curr_lat2, curr_lon2 );
var d = new Date();
var ms = d.valueOf() - startTime.valueOf();
console.log( 'Loaded '+max+', found '+nava.length+' in '+ms+' ms');
showStatus();
doneNav = true;
checkStage2();
} else {
FGx.callbackCount++;
if (show_waiting)
console.log(FGx.callbackCount+': Waiting for navaid load... ');
}
}
/**
* function paintHelipads( airs, navs );
* @param (array) Helipads found in bounding box