import { Object3D, Vector3 } from '@anov/3d-core';
type SkySystemOption = {
    scalarCoefficient?: number;
    turbidity?: number;
    rayleigh?: number;
    mieCoefficient?: number;
    mieDirectionalG?: number;
    elevation?: number;
    azimuth?: number;
    exposure?: number;
};
/**
 * 天空——时间系统
 */
export declare class SkySystem extends Object3D {
    private _size;
    private _sky;
    private _effectController;
    private _latitude;
    private _longitude;
    private _sunHeight;
    private _sun;
    get size(): number;
    set size(size: number);
    get sunHeight(): number;
    set sunHeight(height: number);
    constructor(options?: SkySystemOption);
    /**
     * create sky
     * @returns
     */
    private createSky;
    /**
     * create sun
     * @returns
     */
    private createSun;
    private combination;
    /**
     * 设置天空中的太阳位置
     * @param position
     */
    setSunPositin(position: Vector3): void;
    /**
     * 设置时间
     * @param currentDate
     */
    setTime(currentDate?: Date): void;
    updateSky(camera: any): void;
}
export {};