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Don't display a track of "0" for aircraft with no heading data.

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Oliver Jowett 2015-01-07 22:14:50 +00:00
parent 4a04e4d46d
commit b639fb9107
1 changed files with 2 additions and 0 deletions
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public_html/script.js
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@ -351,11 +351,13 @@ var TrackDirections = ["North","Northeast","East","Southeast","South","Southwest
// track in degrees (0..359) // track in degrees (0..359)
function format_track_brief(track) { function format_track_brief(track) {
if (track === null) return "";
return Math.round(track); return Math.round(track);
} }
// track in degrees (0..359) // track in degrees (0..359)
function format_track_long(track) { function format_track_long(track) {
if (track === null) return "";
var trackDir = Math.floor((360 + track % 360 + 22.5) / 45) % 8; var trackDir = Math.floor((360 + track % 360 + 22.5) / 45) % 8;
return Math.round(track) + "\u00b0 (" + TrackDirections[trackDir] + ")"; return Math.round(track) + "\u00b0 (" + TrackDirections[trackDir] + ")";
} }