packages/google_maps_flutter/google_maps_flutter_platform_interface/lib/src/types/polygon_updates.dart

// Copyright 2013 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

import 'types.dart';

/// [Polygon] update events to be applied to the [GoogleMap].
///
/// Used in [GoogleMapController] when the map is updated.
// (Do not re-export)
class PolygonUpdates extends MapsObjectUpdates<Polygon> {
  /// Computes [PolygonUpdates] given previous and current [Polygon]s.
  PolygonUpdates.from(super.previous, super.current)
      : super.from(objectName: 'polygon');

  /// Set of Polygons to be added in this update.
  Set<Polygon> get polygonsToAdd => objectsToAdd;

  /// Set of PolygonIds to be removed in this update.
  Set<PolygonId> get polygonIdsToRemove => objectIdsToRemove.cast<PolygonId>();

  /// Set of Polygons to be changed in this update.
  Set<Polygon> get polygonsToChange => objectsToChange;
}