import { App } from '../core/App';
import { Entity } from './Entity';
/**
 * 装饰网格
 */
export declare class DecorateGrid extends Entity {
    private _mesh;
    private _mat;
    private _onAfterFrameObserver;
    /**
     * 实例化一个装饰网格对象
     * @param app 应用
     */
    constructor(app: App);
    build(): Promise<void>;
    private _onAfterFrame;
    /**
     * 拆毁（删掉网格，仅保留层级树）
     */
    unbuild(): void;
}