/**
 * @fileOverview fruchterman layout
 * @author shiwu.wyy@antfin.com
 */
import { OutNode, Edge, PointTuple, IndexMap } from './types';
import { Base } from './base';
declare type NodeMap = {
    [key: string]: INode;
};
declare type INode = OutNode & {
    cluster: string;
};
/**
 * fruchterman 布局
 */
export declare class FruchtermanLayout extends Base {
    /** 布局中心 */
    center: PointTuple;
    /** 停止迭代的最大迭代数 */
    maxIteration: number;
    /** 重力大小，影响图的紧凑程度 */
    gravity: number;
    /** 速度 */
    speed: number;
    /** 是否产生聚类力 */
    clustering: boolean;
    /** 聚类力大小 */
    clusterGravity: number;
    nodes: INode[];
    edges: Edge[];
    width: number;
    height: number;
    nodeMap: NodeMap;
    nodeIdxMap: IndexMap;
    constructor(options?: FruchtermanLayout.FruchtermanLayoutOptions);
    getDefaultCfg(): {
        maxIteration: number;
        gravity: number;
        speed: number;
        clustering: boolean;
        clusterGravity: number;
    };
    /**
     * 执行布局
     */
    execute(): {
        nodes: INode[];
        edges: Edge[];
    } | undefined;
    run(): {
        nodes: INode[];
        edges: Edge[];
    };
    private applyCalculate;
    private calRepulsive;
    private calAttractive;
    getType(): string;
}
export declare namespace FruchtermanLayout {
    interface FruchtermanLayoutOptions {
        type: 'fruchterman';
        center?: PointTuple;
        maxIteration?: number;
        width?: number;
        height?: number;
        gravity?: number;
        speed?: number;
        clustering?: boolean;
        clusterGravity?: number;
        workerEnabled?: boolean;
        gpuEnabled?: boolean;
    }
}
export {};