import { World } from '../world';
import { KeyframeClipJson, KeyframeJson, KeyframeNodeJson } from './type';
declare class KeyframeClip {
    json: KeyframeClipJson;
    constructor(json: KeyframeClipJson, node: KeyframeNode, world: World);
    loop(i: number): void;
}
declare class KeyframeNode {
    private _clips;
    json: KeyframeNodeJson;
    count: number;
    i: number;
    constructor(world: World, json: KeyframeNodeJson);
    loop(keyframe: Keyframe): void;
}
declare class Keyframe {
    private _world;
    private _nodes;
    json: KeyframeJson;
    count: number;
    max: number;
    delay: number;
    index: number;
    interval: number;
    constructor(world: World, json: KeyframeJson);
    add(node: KeyframeNodeJson): void;
    remove(node: KeyframeNodeJson): void;
    loop(): void;
}
declare class KeyframeManager {
    private _keyframes;
    add(world: World, keyframe: KeyframeJson): void;
    remove(world: World, keyframe: KeyframeJson): void;
    getKeyframes(world: World): KeyframeJson[];
    clear(world: World): void;
    loop: (world: World) => void;
}
declare const keyframeManager: KeyframeManager;
export { keyframeManager, KeyframeClip, KeyframeNode, Keyframe };