import Base from '../base';
import { Cartesian3 } from 'cesium';
import { PolygonStyle } from '../interface';
declare type Position = [number, number];
export default class DoubleArrow extends Base {
    points: Cesium.Cartesian3[];
    arrowLengthScale: number;
    maxArrowLength: number;
    neckWidthFactor: number;
    headWidthFactor: number;
    headHeightFactor: number;
    neckHeightFactor: number;
    connPoint: Position;
    tempPoint4: Position;
    minPointsForShape: number;
    llBodyPnts: Position[];
    rrBodyPnts: Position[];
    curveControlPointLeft: Cartesian3;
    curveControlPointRight: Cartesian3;
    isClockWise: boolean;
    constructor(cesium: any, viewer: Cesium.Viewer, style?: PolygonStyle);
    getType(): 'polygon' | 'line';
    /**
     * Add points only on click events
     */
    addPoint(cartesian: Cartesian3): void;
    finishDrawing(): void;
    /**
     * Draw a shape based on mouse movement points during the initial drawing.
     */
    updateMovingPoint(cartesian: Cartesian3): void;
    /**
     * In edit mode, drag key points to update corresponding key point data.
     */
    updateDraggingPoint(cartesian: Cartesian3, index: number): void;
    /**
     * Generate geometric shapes based on key points.
     */
    createGraphic(positions: Cesium.Cartesian3[]): Cesium.Cartesian3[];
    getTempPoint4(linePnt1: Position, linePnt2: Position, point: Position): Position;
    getArrowPoints(pnt1: Position, pnt2: Position, pnt3: Position, clockWise: boolean): Position[];
    getArrowBodyPoints(points: Position[], neckLeft: Position, neckRight: Position, tailWidthFactor: number): Position[];
    getArrowHeadPoints(points: Position[]): Position[];
    getPoints(): Cesium.Cartesian3[];
    getBezierControlPointforGrowthAnimation(): {
        left: Cartesian3;
        right: Cartesian3;
    };
}
export {};