import { PointSymbol, Symbol } from "../symbol/symbol";
import { Feature } from "../feature/feature";
import { Renderer } from "./renderer";
import { FeatureClass } from "../feature/feature-class";
import { ScreenBounds } from "../common/screen-bounds";
/**
 * 聚合渲染
 */
export declare class ClusterRenderer extends Renderer {
    /**
     * 默认渲染符号
     */
    private _defaultSymbol;
    /**
     * 聚类容差距离
     */
    private _tolerance;
    /**
     * 数据源
     */
    private _featureClass;
    /**
     * 聚合要素集
     */
    private _features;
    /**
     * 设置数据源
     */
    set featureClass(value: FeatureClass);
    /**
     * 设置默认符号
     */
    set defaultSymbol(value: PointSymbol);
    /**
     * 设置容差
     */
    set tolerance(value: number);
    /**
     * 根据矢量要素获取渲染符号
     * @param {ScreenBounds} redrawBounds - 屏幕范围
     * @remark Do something before layer draw, etc ClusterRenderer
     */
    init(redrawBounds?: ScreenBounds): void;
    /**
     * 根据矢量要素获取渲染符号
     * @param {Feature} feature - 矢量要素
     * @return {Symbol} 返回渲染符号
     */
    getSymbol(feature: Feature): Symbol;
}