import { PolygonHierarchy } from '@cesium/engine';
import { Position } from '../../core';
import { default as Overlay } from '../Overlay';
declare class DoubleArrow extends Overlay {
    private _positions;
    private headHeightFactor;
    private headWidthFactor;
    private neckHeightFactor;
    private neckWidthFactor;
    private headTailFactor;
    constructor(positions: string | Position[]);
    get type(): string;
    set positions(positions: string | any[]);
    get positions(): Position[];
    _getArrowPoints(pnt1: any, pnt2: any, pnt3: any, clockWise: any): any[];
    _getArrowHeadPoints(points: any): any[];
    _getArrowBodyPoints(points: any, neckLeft: any, neckRight: any, tailWidthFactor: any): any[];
    _getTempPoint4(linePnt1: any, linePnt2: any, point: any): any;
    _getHierarchy(): PolygonHierarchy;
    _mountedHook(): void;
    /**
     *
     * @param text
     * @param textStyle
     * @returns {DoubleArrow}
     */
    setLabel(text: any, textStyle: any): this;
    /**
     * Sets Style
     * @param style
     * @returns {DoubleArrow}
     */
    setStyle(style: any): this;
}
export default DoubleArrow;