import { Cartesian3 } from 'cesium';
export declare const getGroundDistance: (cartesian1: Cartesian3, cartesian2: Cartesian3) => number;
export declare const getCenterPosition: (cartesian1: Cartesian3, cartesian2: Cartesian3) => Cartesian3;
export declare const getDistanceLabel: (distance: number) => string;
/**
 * 计算多个点的中心点
 * @param positions
 * @returns
 */
export declare const getCentroid: (positions: Cartesian3[]) => Cartesian3 | null;
/**
 * 计算面积
 * @param positions
 * @returns
 */
export declare const calculatePlanarArea: (positions: Cartesian3[]) => string;
export declare const getAreaText: (area: number) => string;