import { Mesh, Timer, Scene, PerspectiveCamera, WebGLRenderer, PMREMGenerator, Vector3, AnimationMixer, Raycaster, Intersection, AnimationAction, AnimationClip, Texture, Material, OrthographicCamera, Object3D } from 'three';
import { EffectComposer } from 'postprocessing';
import { default as Stats } from 'three/examples/jsm/libs/stats.module.js';
import { Sky } from 'three/examples/jsm/objects/Sky.js';
import { AnimationOperate } from '@three3d/animation';
import { default as Scener } from './Scener';
import { CSS2DRenderer, CSS3DRenderer } from '../Renderer';
import { default as RendererManager } from './RendererManager';
import { default as CameraManager } from './CameraManager';
import { default as EffectManager } from './EffectManager';
import { default as Bvh } from './Bvh';
import { default as Controls } from '../Controls';
import { Model } from '../Library';
import { IColorSpace, SkyOptions, IColor, OffsetPoint, Position, ViewportOptions, ViewportState, ModelAnimationFindFunc, SignalsState, ToneMappingOptions, SSAOOptions, BloomOptions, IntersectsOptions, EnvironmentOptions } from '../Interface';
import { default as EventHandler } from './EventHandler';
import { default as Info } from './Info';
import { ViewHelper } from './ViewHelper';
import { ObjectsCache } from '../Cache';
import { default as AutoInstancingManager, AutoInstancingOptions, AutoInstancingStats } from './AutoInstancingManager';
export declare const innerRenderState: {
    needsUpdate: boolean;
};
declare class Viewport {
    readonly options: ViewportOptions;
    readonly signals: SignalsState;
    readonly cache: ObjectsCache;
    clock: Timer;
    raycaster: Raycaster;
    scene: Scene;
    sky: Sky | null;
    state: ViewportState;
    scener: Scener;
    rendererManager: RendererManager;
    container: HTMLElement;
    interactiveContainer: HTMLElement;
    renderer: WebGLRenderer;
    rendererCSS2D: CSS2DRenderer;
    rendererCSS3D: CSS3DRenderer;
    autoInstancingManager: AutoInstancingManager;
    pmremGenerator: PMREMGenerator;
    info: Info;
    stats: Stats;
    cameraManager: CameraManager;
    camera: PerspectiveCamera | OrthographicCamera;
    controls: Controls;
    effectManager: EffectManager;
    effectComposer: EffectComposer;
    bvh: Bvh;
    mixer: AnimationMixer;
    clipsSet: Set<AnimationAction>;
    viewHelper: ViewHelper;
    eventHandler: EventHandler;
    /**
     * render 前回调（每帧执行）
     */
    postUpdate: Map<string | number, (time: number) => void>;
    /**
     * render 后回调
     */
    postRender: Map<string | number, () => void>;
    private _loop;
    private outlineSelection;
    private pendingRenderResolvers;
    resizeObserver: ResizeObserver;
    constructor(options: ViewportOptions, signals: SignalsState, cache: ObjectsCache);
    _initInfo(): void;
    _initStats(): void;
    setAutoInstancing(enabled: boolean, root?: Object3D, options?: AutoInstancingOptions): void;
    getAutoInstancingStats(root?: Object3D): AutoInstancingStats | AutoInstancingStats[] | null;
    /**
     ***************************** post-processing ***************************
     */
    setBloom(options?: BloomOptions): void;
    setSSAO(options?: SSAOOptions): void;
    /**
     ***************************** renderer ***************************
     */
    setColorSpace(colorSpace: IColorSpace): void;
    setToneMapping(options?: ToneMappingOptions): void;
    /**
     ***************************** background ***************************
     */
    setSphereSkyBackground(imgUrl: string): Promise<void>;
    setSkyBackground(dirPath: string, fileNames?: string[]): Promise<void>;
    setBackgroundColor(color: IColor): void;
    setBackgroundColorAlpha(color: IColor, alpha?: number): void;
    setBackgroundImage(imgUrl: string): Promise<void>;
    setSky(options?: SkyOptions): Sky | undefined;
    closeSky(): boolean;
    screenshot(): Promise<Blob | null>;
    /**
     ***************************** environment ***************************
     */
    setEnvironment(options?: EnvironmentOptions): Promise<Texture<unknown, import('three').TextureEventMap>>;
    /**
     ***************************** modelAnimation ***************************
     */
    playModelAnimation(model: Model, animation: number | AnimationClip | ModelAnimationFindFunc): AnimationOperate | undefined;
    stopModelAnimation(model: Model, animation: number | AnimationClip | ModelAnimationFindFunc): void;
    /**
     ***************************** render ***************************
     */
    render(fn?: () => unknown): Promise<number>;
    /**
     * 触发渲染（兼容 soongis）
     * @param count
     */
    triggerRender(count?: number): void;
    private _triggerRender;
    /**
     * 暂停渲染
     * @param pause
     */
    setPauseRender(pause?: boolean): Promise<number | undefined>;
    /**
     * effect passes
     */
    _passesObserver(): void;
    private _syncAutoInstancingOutlineSelection;
    /**
     * 每帧都会被执行
     * @param time
     * @returns
     */
    autoRender(): void;
    animate(time: number): void;
    getOffsetByPosition(position: Position): {
        left: number;
        top: number;
    };
    getPositionByOffset(offset: OffsetPoint, z?: number, scalar?: number): Vector3;
    getIntersects(event: MouseEvent | TouchEvent | OffsetPoint, objects?: Object3D<import('three').Object3DEventMap>[], options?: IntersectsOptions): Intersection<Object3D<import('three').Object3DEventMap>>[];
    rayClash(startPoint?: Vector3, dir?: Vector3, objects?: Mesh<import('three').BufferGeometry<import('three').NormalBufferAttributes, import('three').BufferGeometryEventMap>, Material<import('three').MaterialEventMap> | Material<import('three').MaterialEventMap>[], import('three').Object3DEventMap>[]): Intersection<Object3D<import('three').Object3DEventMap>>[];
    clearSignals(): void;
    /**
     * 隔离显示对象 - 使用 Layers API 仅显示指定对象，隐藏场景中其他对象
     * @param objects 需要隔离显示的对象
     * @param layerChannel 使用的 layer 通道，默认 1（0 为默认通道）
     */
    isolate(objects: Object3D | Object3D[], layerChannel?: number): void;
    /**
     * 取消隔离 - 恢复场景中所有对象的可见性
     * @param layerChannel 之前隔离使用的 layer 通道，默认 1
     */
    unisolate(layerChannel?: number): void;
    dispose(): void;
    _signalsEventListenr(): void;
}
export default Viewport;