private Content makeTrackContent() {
// Prepare tracks instant
trackNode = new TrackDisplayNode(model);
universe.addTimelapseListener(trackNode);
// Pass tracks instant to all instants
final TreeMap<Integer, ContentInstant> instants = new TreeMap<Integer, ContentInstant>();
final ContentInstant trackCI = new ContentInstant("Tracks_all_frames");
trackCI.display(trackNode);
instants.put(0, trackCI);
final Content tc = new Content(TRACK_CONTENT_NAME, instants);
tc.setShowAllTimepoints(true);
tc.showCoordinateSystem(false);
return tc;
}
