/**
 * 描边效果
 * @example
 * ```ts
 * viewer.effect.silhouette.enable = true
 * ```
 */
declare class Silhouette {
    private _viewer;
    private _delegate;
    private _enable;
    private _color;
    private _length;
    private _selected;
    private _state;
    constructor();
    /**
     * 类型
     * @ignore
     */
    get type(): string;
    /**
     * 是否启用
     */
    set enable(enable: boolean);
    get enable(): boolean;
    /**
     * 颜色
     */
    set color(color: Cesium.Color);
    get color(): Cesium.Color;
    /**
     * 长度
     */
    set length(length: number);
    get length(): number;
    /**
     * 设置后期作用的覆盖物
     */
    set selected(selected: any[]);
    get selected(): any[];
    /**
     *
     * @private
     */
    private _createPostProcessStage;
    /**
     * 添加效果
     * @param viewer
     * @returns {Silhouette}
     * @ignore
     */
    addTo(viewer: Cesium.Viewer): Silhouette;
}
export default Silhouette;