getMarkers method

Implementation

Future<List<Cluster<T>>> getMarkers() async {
  if (_mapId == null) return List.empty();

  final mapBounds = await GoogleMapsFlutterPlatform.instance.getVisibleRegion(mapId: _mapId!);

  final paddedBounds = await _addPadding(mapBounds);

  final inflatedBounds = switch (clusterAlgorithm) {
    ClusterAlgorithm.geoHash => _inflateBounds(paddedBounds),
    _ => paddedBounds,
  };

  final visibleItems = items.where((i) {
    return inflatedBounds.contains(i.location);
  }).toList();

  if (stopClusteringZoom != null && _zoom >= stopClusteringZoom!) {
    return visibleItems.map((i) => Cluster<T>.fromItems([i])).toList();
  }

  List<Cluster<T>> markers;

  if (clusterAlgorithm == ClusterAlgorithm.geoHash || visibleItems.length >= maxItemsForMaxDistAlgo) {
    final level = _findLevel(levels);
    markers = _computeClusters(visibleItems, List.empty(growable: true), level: level);
  } else {
    markers = _computeClustersWithMaxDist(visibleItems, _zoom);
  }

  return markers;
}