// Checks if stroke is new
if (!stagedStrokesIds.contains(stroke.getID())) {
LOGGER.log(Level.FINEST, "Stroke start");
// fire new GmlStrokeStartEvent
GmlStrokeStartEvent event = new GmlStrokeStartEvent(stroke);
eventHandler.fireNewEvent(event);
// set as staged stroke
stagedStrokesIds.add(stroke.getID());
}