import * as THREE from "three";
import { GLTFLoader as THREEGLTFLoader } from "./thirdparty/GLTFLoader";
import type { GLTF as THREEGLTF } from "./thirdparty/GLTFLoader";
import type { GLTFParser, GLTFReference } from "./thirdparty/GLTFLoader";
import { DRACOLoader } from './thirdparty/DRACOLoader';
import { DDSLoader } from './thirdparty/DDSLoader';
import type { DDS } from './thirdparty/DDSLoader';
import { GLTFObject } from "./gltf-object";
/**
 * GLTFLoader 返回数据
 * @description
 * 一般情况下，gltf.scene 为模型对象，直接通过 `five.scene.add(gltf.scene)` 即可添加到场景
 * Five 的模型单位 1 为 1米，载入的模型单位标准不一，请自行 scale。
 * 如果涉及模型内置动画，GLTF 已经帮你封装了，通过 `gltf.animations` 可以获取动画帧。gltf.scene.mixer 为对应的 动画混合器。
 * 通过 `gltf.scene.mixer.clipAction(gltf.animations[0]).play()` 即可播放动画。
 */
interface GLTF {
    animations: THREE.AnimationClip[];
    scene: GLTFObject;
    scenes: GLTFObject[];
    cameras: THREE.Camera[];
    asset: {
        copyright?: string;
        generator?: string;
        version?: string;
        minVersion?: string;
        extensions?: any;
        extras?: any;
    };
    parser: GLTFParser;
    userData: any;
}
/**
 * GLTF 模型加载器
 */
declare class GLTFLoader extends THREEGLTFLoader {
    static get version(): string;
    /**
     * GLTF 模型加载器
     *
     * @example
     * ```
     * const gltfLoader = new GLTFLoader();
     * gltfLoader.load("https://vr-public.realsee-cdn.cn/release/static/image/release/five/demo/gltf/plants/scene.gltf", ({ scene }) => {
     *   five.scene.add(scene);
     * });
     * ```
     */
    constructor(manager?: THREE.LoadingManager);
    /**
     * 加载模型
     * @param url - 模型 URL
     * @param onLoad - 加载完成回调
     * @param onProgress - 加载进度回调
     * @param onError - 加载错误回调
     */
    load(url: string, onLoad: (gltf: GLTF) => void, onProgress?: (event: ProgressEvent) => void, onError?: (event: ErrorEvent) => void): void;
    parse(data: ArrayBuffer | string, path: string, onLoad: (gltf: GLTF) => void, onError?: (event: ErrorEvent) => void): void;
}
export { GLTFObject, GLTFLoader, GLTFParser, GLTFReference, GLTF, DRACOLoader, DDSLoader, DDS, THREEGLTFLoader, THREEGLTF };