import type { Object3D } from '@anov/3d-core';
import type { GrowOption, IGrowStyle } from './type';
export declare class GrowStyleDown implements IGrowStyle {
    private _objs;
    private _opt;
    private _tl;
    private maxDistance;
    constructor(objs: Array<Object3D>, opt: GrowOption);
    init(): void;
    in(): void;
    out(): void;
    getTimeLine(): gsap.core.Timeline;
}