getBoundingBox method

@override Future<BoundingBox> getBoundingBox()

Returns the geographic area covered by this datastore.

Returns the bounding box defining the extent of available map data

Implementation

@override
Future<BoundingBox> getBoundingBox() async {
  if (_boundingBox != null) return _boundingBox!;
  for (Datastore datastore in List.from(datastores)) {
    BoundingBox? boundingBox = _datastoreBoundaries[datastore];
    boundingBox ??= await datastore.getBoundingBox();
    _datastoreBoundaries[datastore] = boundingBox;

    if (null == _boundingBox) {
      _boundingBox = boundingBox;
    } else {
      _boundingBox = _boundingBox!.extendBoundingBox(boundingBox);
    }
  }
  return _boundingBox!;
}