import type { Root } from "../../core/Root";
import type { Bullet } from "../../core/render/Bullet";
import type { IDisposer } from "../../core/util/Disposer";
import { MapPointSeries, IMapPointSeriesSettings, IMapPointSeriesPrivate, IMapPointSeriesDataItem } from "./MapPointSeries";
import { DataItem, IComponentDataItem } from "../../core/render/Component";
import * as d3hierarchy from "d3-hierarchy";
export interface IClusteredDataItem extends IComponentDataItem {
    /**
     * Data items of the points in the cluster.
     */
    children?: Array<DataItem<IMapPointSeriesDataItem>>;
    /**
     * The bullet that shows the cluster.
     */
    bullet?: Bullet;
    /**
     * Group id of the cluster's points.
     */
    groupId?: string;
    /**
     * Longitude of the cluster, in degrees.
     */
    longitude?: number;
    /**
     * Latitude of the cluster, in degrees.
     */
    latitude?: number;
    /**
     * Average altitude of the cluster's data items, in metres.
     *
     * @since 5.21.0
     */
    altitude?: number;
}
export interface IClusteredPointSeriesDataItem extends IMapPointSeriesDataItem {
    /**
     * Id of the point's group: it clusters only with points of the same group.
     */
    groupId?: string;
    /**
     * The cluster the point is in, if any.
     * @readonly
     */
    cluster?: DataItem<IClusteredDataItem>;
    /**
     * How far, in pixels, scattering moved the bullet horizontally.
     */
    dx?: number;
    /**
     * How far, in pixels, scattering moved the bullet vertically.
     */
    dy?: number;
}
export interface IClusteredPointSeriesPrivate extends IMapPointSeriesPrivate {
}
export interface IClusteredPointSeriesSettings extends IMapPointSeriesSettings {
    /**
     * Field in `data` that holds the id of the point's group. Points cluster
     * only with points of the same group, such as the same continent.
     *
     * @see {@link https://www.amcharts.com/docs/v5/charts/map-chart/clustered-point-series/#Group_segregation} for more info
     * @default "groupId"
     */
    groupIdField?: string;
    /**
     * Points closer than this many pixels to each other are clustered.
     *
     * @see {@link https://www.amcharts.com/docs/v5/charts/map-chart/clustered-point-series/#Minimal_distance} for more info
     * @default 20
     */
    minDistance?: number;
    /**
     * A function that returns the [[Bullet]] to show a cluster with. Without
     * it, points aren't clustered.
     *
     * @see {@link https://www.amcharts.com/docs/v5/charts/map-chart/clustered-point-series/#Group_bullet} for more info
     */
    clusteredBullet?: (root: Root, series: ClusteredPointSeries, dataItem: DataItem<IClusteredDataItem>) => Bullet | undefined;
    /**
     * Once clustering stops (see `stopClusterZoom`), points closer than this
     * many pixels to each other are scattered so that all of them show.
     *
     * @see {@link https://www.amcharts.com/docs/v5/charts/map-chart/clustered-point-series/#Scatter_settings} for more info
     * @default 3
     * @since 5.5.7
     */
    scatterDistance?: number;
    /**
     * Radius in pixels each bullet is taken to have when scattering them.
     *
     * @see {@link https://www.amcharts.com/docs/v5/charts/map-chart/clustered-point-series/#Scatter_settings} for more info
     * @default 8
     * @since 5.5.7
     */
    scatterRadius?: number;
    /**
     * Clustering stops, and scattering starts, once the map is zoomed to
     * `maxZoomLevel` times this.
     *
     * @see {@link https://www.amcharts.com/docs/v5/charts/map-chart/clustered-point-series/#Scatter_settings} for more info
     * @default 0.95
     * @since 5.5.7
     */
    stopClusterZoom?: number;
    /**
     * Waits this many milliseconds after the zoom level changes before
     * clustering again. Helps with many data items.
     *
     * @default 0
     * @since 5.9.11
     */
    clusterDelay?: number;
}
/**
 * A [[MapPointSeries]] that groups points close together on screen into
 * clusters. Clusters are worked out again whenever the zoom level changes.
 *
 * @see {@link https://www.amcharts.com/docs/v5/charts/map-chart/clustered-point-series/} for more info
 * @since 5.5.6
 * @important
 */
export declare class ClusteredPointSeries extends MapPointSeries {
    static className: string;
    static classNames: Array<string>;
    _settings: IClusteredPointSeriesSettings;
    _privateSettings: IClusteredPointSeriesPrivate;
    _dataItemSettings: IClusteredPointSeriesDataItem;
    protected _dataItem: DataItem<this["_dataItemSettings"]>;
    protected _clusterIndex: number;
    protected _clusters: Array<Array<DataItem<this["_dataItemSettings"]>>>;
    clusteredDataItems: Array<DataItem<IClusteredDataItem>>;
    protected _scatterIndex: number;
    protected _scatters: Array<Array<DataItem<this["_dataItemSettings"]>>>;
    _packLayout: d3hierarchy.PackLayout<unknown>;
    protected _spiral: Array<{
        x: number;
        y: number;
    }>;
    protected _clusterDP?: IDisposer;
    protected _previousZL: number;
    protected _afterNew(): void;
    protected _afterDataChange(): void;
    _updateChildren(): void;
    protected _doTheCluster(): void;
    /**
     * Zooms the map to fit the points of a cluster.
     *
     * @param  dataItem  Data item of the cluster
     * @param  rotate    Also rotate the map to bring the cluster to the middle, as on a globe
     * @see {@link https://www.amcharts.com/docs/v5/charts/map-chart/clustered-point-series/#Drill_down} for more info
     */
    zoomToCluster(dataItem: DataItem<IClusteredDataItem>, rotate?: boolean): void;
    protected _clusterGroup(dataItems: Array<DataItem<IClusteredPointSeriesDataItem>>): void;
    protected _onDataClear(): void;
    protected _scatterGroup(dataItems: Array<DataItem<IClusteredPointSeriesDataItem>>): void;
}
//# sourceMappingURL=ClusteredPointSeries.d.ts.map