import Viewer from "../../viewer/Viewer";
/**
 * 雪天效果
 * @example
 * ```ts
 * viewer.weather.snow.enable = true
 * viewer.weather.snow.speed = 2
 * ```
 */
declare class Snow {
    private _id;
    private _viewer;
    private _delegate;
    private _enable;
    private _speed;
    private _state;
    constructor();
    /**
     * 类型
     */
    get type(): string;
    /**
     * 是否启用
     */
    set enable(enable: boolean);
    get enable(): boolean;
    /**
     * 速度
     */
    set speed(speed: number);
    get speed(): number;
    /**
     *
     * @private
     */
    private _createPostProcessStage;
    /**
     * 添加到3D场景
     * @param viewer
     * @returns
     * @internal
     */
    addTo(viewer: Viewer): Snow;
}
export default Snow;