private FolderType createSpeed(KmlRoute route, int startIndex, int endIndex) {
ObjectFactory objectFactory = new ObjectFactory();
FolderType folderType = objectFactory.createFolderType();
folderType.setName(SPEED);
folderType.setVisibility(FALSE);
folderType.setOpen(FALSE);
folderType.getAbstractFeatureGroup().add(objectFactory.createScreenOverlay(createSpeedbar()));
int segmentIndex = 0;
List<String> coordinates = new ArrayList<>();
Integer previousSpeedClass = null;
Double previousSpeed = null;
KmlPosition previous = null;
List<KmlPosition> positions = route.getPositions();
// since the speed of a position is the average speed of the previous segment
for (int i = startIndex; i < endIndex; i++) {
KmlPosition position = positions.get(i);
Double speed = null;
if (position.hasSpeed()) speed = position.getSpeed();
else if (previous != null) speed = previous.calculateSpeed(position);
if (speed == null) speed = previousSpeed;
if (speed == null) continue;
coordinates.add(createCoordinates(position, false));
int speedClass = getSpeedClass(speed);
if (previousSpeedClass != null && previousSpeedClass != speedClass) {
PlacemarkType placemarkType =
createSpeedSegment(++segmentIndex, previousSpeedClass, coordinates);
folderType.getAbstractFeatureGroup().add(objectFactory.createPlacemark(placemarkType));
coordinates.clear();
coordinates.add(createCoordinates(position, false));
}
previousSpeedClass = speedClass;
previousSpeed = speed;
previous = position;
}
return segmentIndex > 0 ? folderType : null;
}
