/**
 * GCJ02 Projection on basis of WGS84(EGPS:4326)
 * <p>
 * GCJ02 is not a projection strictly. In fact, it is a
 * confidential algorithm to offset real coordinate in China
 *
 * @author Ke Wang (wkgreat@outlook.com)
 *
 * </p>
 * */
import Projection from 'ol/proj/Projection';
import { Extent } from 'ol/extent';
/**
 * radius of WGS84 ellipsoid
 * @const
 * @type {number}
 * */
export declare const RADIUS: number;
/**
 * extent of gcj02
 * @const
 * @type {ol/Extent}
 * */
export declare const EXTENT: Extent;
/**
 * coefficient between degree and radian
 * @const
 * @type {number}
 * */
export declare const METERS_PER_UNIT: number;
/**
 * @classdesc
 * Projection object definition of GCJ02
 * */
declare class GCJ02Projection extends Projection {
    /**
       * @constructor
       * @param {string} code of gcj02
       * @param {string} opt_axisOrientation Axis orientation.
       * */
    constructor(code: string, opt_axisOrientation?: string);
}
/**
 * default code of gcj02, used as identifier of gcj02
 * @const
 * @type {string}
 * */
export declare const CODE: string;
/**
 * all code of GCJ02Projection, 'GCJ02', 'GCJ:02' and 'ZH:MARS'
 * @const
 * @type {GCJ02Projection[]}
 * */
export declare const PROJECTIONS: GCJ02Projection[];
/**
 * transform coordinate from GCJ02 to EPSG:3857
 * @function
 * @param {number[]} input input coordinate
 * @param {number[]} opt_output output coordinate
 * @param {number} opt_dimension dimension of coordinate
 * @return {number[]} tranformed coordinate
 * */
export declare function toEPSG3857(input: number[], opt_output: number[], opt_dimension: number): number[];
/**
 * transform coordinate from EPSG:3857 to GCJ02
 * @function
 * @param {number[]} input input coordinate
 * @param {number[]} opt_output output coordinate
 * @param {number} opt_dimension dimension of coordinate
 * @return {number[]} tranformed coordinate
 * */
export declare function fromEPSG3857(input: number[], opt_output: number[], opt_dimension: number): number[];
/**
 * transform coordinate from GCJ02 to EPSG:4326
 * @function
 * @param {number[]} input input coordinate
 * @param {number[]} opt_output output coordinate
 * @param {number} opt_dimension dimension of coordinate
 * @return {number[]} tranformed coordinate
 * */
export declare function toEPSG4326(input: number[], opt_output: number[], opt_dimension: number): number[];
/**
 * transform coordinate from EPSG:4326 to GCJ02
 * @function
 * @param {number[]} input input coordinate
 * @param {number[]} opt_output output coordinate
 * @param {number} opt_dimension dimension of coordinate
 * @return {number[]} tranformed coordinate
 * */
export declare function fromEPSG4326(input: number[], opt_output: number[], opt_dimension: number): number[];
/**
 * transform coordinate from GCJ02 to EPSG:4326, this algorithm is more precise.
 * @function
 * @param {number[]} coord coordinate
 * @return {number[]} tranformed coordinate
 * */
export declare function gcj02WGSExactly(coord: number[]): number[];
/**
 * transform coordinate from EPSG:4326 to GCJ02
 * @function
 * @param {number[]} coord coordinate
 * @return {number[]} tranformed coordinate
 * */
export declare function wgs2GCJ(coord: number[]): number[];
/**
 * transform coordinate from GCJ02 to EPSG:4326
 * @function
 * @param {number[]} coord coordinate
 * @return {number[]} tranformed coordinate
 * */
export declare function gcj2WGS(coord: number[]): number[];
/**
 * whether a coordinate is nout of area of china
 * @param {number[]} coord the coordinate
 * @return {boolean} whether is out of china
 * */
export declare function outOfChina(coord: number[]): boolean;
export {};