dump1090/public_html/formatter.js

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JavaScript
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// -*- mode: javascript; indent-tabs-mode: t; c-basic-offset: 8 -*-
"use strict";
var NBSP='\u00a0';
var DEGREES='\u00b0'
var UP_TRIANGLE='\u25b2'; // U+25B2 BLACK UP-POINTING TRIANGLE
var DOWN_TRIANGLE='\u25bc'; // U+25BC BLACK DOWN-POINTING TRIANGLE
var TrackDirections = ["North","Northeast","East","Southeast","South","Southwest","West","Northwest"];
// formatting helpers
// track in degrees (0..359)
function format_track_brief(track) {
if (track === null){
return "";
}
return Math.round(track);
}
// track in degrees (0..359)
function format_track_long(track) {
if (track === null){
return "n/a";
}
var trackDir = Math.floor((360 + track % 360 + 22.5) / 45) % 8;
return Math.round(track) + DEGREES + NBSP + "(" + TrackDirections[trackDir] + ")";
}
// altitude (input: alt in feet)
// brief will always show either Metric or Imperial
function format_altitude_brief(alt, vr) {
var alt_text;
if (alt === null){
return "";
} else if (alt === "ground"){
return "ground";
}
if (Metric) {
alt_text = Math.round(alt / 3.2828) + NBSP; // Altitude to meters
} else {
alt_text = Math.round(alt) + NBSP;
}
// Vertical Rate Triangle
if (vr > 128){
return alt_text + UP_TRIANGLE;
} else if (vr < -128){
return alt_text + DOWN_TRIANGLE;
} else {
return alt_text + NBSP;
}
}
// alt in ft
function _alt_to_unit(alt, m) {
if (m)
return Math.round(alt / 3.2828) + NBSP + "m";
else
return Math.round(alt) + NBSP + "ft";
}
function format_altitude_long(alt, vr) {
var alt_text = "";
if (alt === null) {
return "n/a";
} else if (alt === "ground") {
return "on ground";
}
// Primary unit
alt_text = _alt_to_unit(alt, Metric);
// Secondary unit
if (ShowOtherUnits) {
alt_text = alt_text + ' | ' + _alt_to_unit(alt, !Metric);
}
if (vr > 128) {
return UP_TRIANGLE + NBSP + alt_text;
} else if (vr < -128) {
return DOWN_TRIANGLE + NBSP + alt_text;
} else {
return alt_text;
}
}
//input: speed in kts
function format_speed_brief(speed) {
if (speed === null) {
return "";
}
if (Metric) {
return Math.round(speed * 1.852); // knots to kilometers per hour
} else {
return Math.round(speed); // knots
}
}
// speed in kts
function _speed_to_unit(speed, m) {
if (m)
return Math.round(speed * 1.852) + NBSP + "km/h";
else
return Math.round(speed) + NBSP + "kt";
}
function format_speed_long(speed) {
if (speed === null) {
return "n/a";
}
// Primary unit
var speed_text = _speed_to_unit(speed, Metric);
// Secondary unit
if (ShowOtherUnits) {
speed_text = speed_text + ' | ' + _speed_to_unit(speed, !Metric);
}
return speed_text;
}
// dist in meters
function format_distance_brief(dist) {
if (dist === null) {
return "";
}
if (Metric) {
return (dist/1000).toFixed(1); // meters to kilometers
} else {
return (dist/1852).toFixed(1); // meters to nautocal miles
}
}
// dist in metres
function _dist_to_unit(dist, m) {
if (m)
return (dist/1000).toFixed(1) + NBSP + "km";
else
return (dist/1852).toFixed(1) + NBSP + "NM";
}
function format_distance_long(dist) {
if (dist === null) {
return "n/a";
}
// Primary unit
var dist_text = _dist_to_unit(dist, Metric);
// Secondary unit
if (ShowOtherUnits) {
dist_text = dist_text + ' | ' + _dist_to_unit(dist, !Metric);
}
return dist_text;
}
// p as a LatLng
function format_latlng(p) {
return p.lat().toFixed(3) + DEGREES + "," + NBSP + p.lng().toFixed(3) + DEGREES;
}