import { Scene, WebGLRenderer, PerspectiveCamera } from 'three';
import type { Texture } from 'three';
import type { VzFormat } from '@vizor-vr/shared';
import type { PlayerConfig } from '@vizor-vr/shared';
import type { PlayerState } from '../core/player-state.js';
import type { StereoMode } from '@vizor-vr/shared';
import type { IProjection } from './projections/projection.js';
import { CameraController } from './camera-controller.js';
import type { AudioManager } from '../audio/audio-manager.js';
/**
 * Main renderer facade.
 * Manages the Three.js scene, camera, projection, and animation loop.
 */
export declare class VzRenderer {
    private scene;
    private renderer;
    private camera;
    private cameraController;
    private projection;
    private videoTexture;
    private audioManager;
    private state;
    private config;
    private canvas;
    private isRunning;
    private containerEl;
    private intersectionObserver;
    private isVisible;
    private fpsHistory;
    private lastFrameTime;
    constructor(shadowRoot: ShadowRoot, containerEl: HTMLElement, state: PlayerState, config: PlayerConfig);
    /** Set up the projection and texture for a video element */
    setupVideo(videoElement: HTMLVideoElement, format: VzFormat): void;
    /** Set up the projection and texture for an image */
    setupImage(texture: Texture, format: VzFormat): void;
    /**
     * Load a compressed KTX2 texture (optional, GPU-compressed).
     * Falls back gracefully if KTX2Loader is not available.
     */
    loadCompressedTexture(url: string, format: VzFormat): Promise<void>;
    /** Start the animation loop */
    start(): void;
    /** Stop the animation loop */
    stop(): void;
    /** Handle container resize */
    resize(): void;
    /** Get the WebGL renderer (for WebXR integration) */
    getThreeRenderer(): WebGLRenderer;
    /** Get the camera (for WebXR integration) */
    getCamera(): PerspectiveCamera;
    /** Get the camera controller */
    getCameraController(): CameraController;
    /** Get the Three.js scene (for hotspot integration) */
    getScene(): Scene;
    /** Set the audio manager for spatial audio orientation updates */
    setAudioManager(manager: AudioManager): void;
    /** Clean up all GPU resources */
    dispose(): void;
    /** Set a custom projection (for cinema mode) */
    setCustomProjection(projection: IProjection, texture: Texture, stereoMode: StereoMode): void;
    /** Dispose all meshes, materials, and textures in the scene */
    private disposeSceneChildren;
    private setProjection;
    private createProjection;
    private tick;
    /**
     * Adaptive quality: adjust pixel ratio based on recent FPS.
     * Drop at <30fps, increase at >55fps. Checked every 60 frames.
     */
    private adaptPixelRatio;
}
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