combine static method

bool combine(Waypath firstWaypath, List<ILatLong> otherLatLongs)

adds the otherLatLongs to firstWaypath in the correct order. Returns true if successful. Note that firstWaypath may be changed whereas otherLatLongs is never gonna be changed.

Implementation

static bool combine(Waypath firstWaypath, List<ILatLong> otherLatLongs) {
  if (LatLongUtils.isNear(firstWaypath.first, otherLatLongs.last)) {
    // add to the start of this list
    firstWaypath.removeAt(0);
    firstWaypath.insertAll(0, otherLatLongs);
    return true;
  } else if (LatLongUtils.isNear(firstWaypath.last, otherLatLongs.first)) {
    // add to end of this list
    firstWaypath.addAll(otherLatLongs.skip(1));
    return true;
  } else if (LatLongUtils.isNear(firstWaypath.first, otherLatLongs.first)) {
    // reversed order, add to start of the list in reversed order
    firstWaypath.removeAt(0);
    firstWaypath.insertAll(0, otherLatLongs.reversed);
    return true;
  } else if (LatLongUtils.isNear(firstWaypath.last, otherLatLongs.last)) {
    // reversed order, add to end of the list in reversed order
    firstWaypath.addAll(otherLatLongs.reversed.skip(1));
    return true;
  } else {
    return false;
  }
}