@googlemaps/markerclusterer
Version:
Creates and manages per-zoom-level clusters for large amounts of markers.
44 lines (43 loc) • 1.67 kB
TypeScript
/**
* Copyright 2021 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import { AbstractAlgorithm, AlgorithmInput, AlgorithmOutput } from "./core";
import SuperCluster, { ClusterFeature } from "supercluster";
import { Marker } from "../marker-utils";
import { Cluster } from "../cluster";
export type SuperClusterOptions = SuperCluster.Options<{
[name: string]: any;
}, {
[name: string]: any;
}>;
/**
* A very fast JavaScript algorithm for geospatial point clustering using KD trees.
*
* @see https://www.npmjs.com/package/supercluster for more information on options.
*/
export declare class SuperClusterAlgorithm extends AbstractAlgorithm {
protected superCluster: SuperCluster;
protected markers: Marker[];
protected clusters: Cluster[];
protected state: {
zoom: number;
};
constructor({ maxZoom, radius, ...options }: SuperClusterOptions);
calculate(input: AlgorithmInput): AlgorithmOutput;
cluster({ map }: AlgorithmInput): Cluster[];
protected transformCluster({ geometry: { coordinates: [lng, lat], }, properties, }: ClusterFeature<{
marker: Marker;
}>): Cluster;
}