import { Camera, Mesh, OrthographicCamera, Quaternion, Scene, ShaderMaterial, Vector2, Vector3, WebGLRenderer, WebGLRenderTarget } from "three";
import { OrbitControls } from './OrbitControls';
import { SceneHelper } from './SceneHelper';
import { Raycaster } from './raycaster/Raycaster';
import { SplatMesh } from './SplatMesh';
import { SplatBuffer } from "./SplatBuffer";
import { LoadFileOptions, ViewerParams } from "./Viewer.types";
export declare class Viewer {
    camera?: Camera;
    cameraFocalLength?: number;
    cameraUp: Vector3;
    controls: OrbitControls | null;
    currentFPS: number;
    inIndexArray: Uint32Array | null;
    infoPanel: HTMLDivElement | null;
    infoPanelCells: {
        [id: string]: HTMLDivElement;
    };
    initialCameraLookAt: Vector3;
    initialCameraPosition: Vector3;
    lastSortTime: number;
    mousePosition: Vector2;
    outIndexArray?: Uint32Array;
    raycaster: Raycaster;
    renderTargetCopyCamera?: OrthographicCamera;
    renderTargetCopyMaterial?: ShaderMaterial;
    renderTargetCopyQuad?: Mesh;
    renderer?: WebGLRenderer;
    rootElement?: HTMLDivElement;
    scene?: Scene;
    sceneHelper: SceneHelper | null;
    selfDrivenMode: boolean;
    selfDrivenModeRunning: boolean;
    selfDrivenUpdateFunc: () => void;
    showInfo: boolean;
    showMeshCursor: boolean;
    simpleObjectDepthOverrideMaterial?: ShaderMaterial;
    simpleScene?: Scene;
    sortRunning: boolean;
    sortWorker: Worker | null;
    splatMesh: SplatMesh | null;
    splatRenderCount: number;
    splatRenderTarget?: WebGLRenderTarget;
    splatRenderingInitialized: boolean;
    splatSortCount: number;
    useBuiltInControls: boolean;
    usingExternalCamera: boolean;
    usingExternalRenderer: boolean;
    constructor(params?: ViewerParams);
    onKeyDown(e: any): void;
    onMouseMove(mouse: any): void;
    getRenderDimensions(outDimensions: Vector2): void;
    init(): void;
    setupInfoPanel(): void;
    updateSplatRenderTargetForRenderDimensions(width: number, height: number): void;
    setupSimpleObjectDepthOverrideMaterial(): void;
    setupRenderTargetCopyObjects(): void;
    updateSplatMeshUniforms: (this: Viewer) => void;
    loadFile(fileName: string, options?: LoadFileOptions): Promise<void>;
    setupSplatMesh(splatBuffer: any, splatAlphaRemovalThreshold?: number, position?: Vector3, quaternion?: Quaternion, halfPrecisionCovariancesOnGPU?: boolean): void;
    setupSortWorker(splatBuffer: SplatBuffer): Promise<void>;
    gatherSceneNodes: (this: Viewer, gatherAllNodes: any) => void;
    start(): void;
    updateFPS: (this: Viewer) => void;
    updateForRendererSizeChanges: (this: Viewer) => void;
    selfDrivenUpdate(): void;
    update(): void;
    rayCastScene: (this: Viewer) => void;
    updateInfo: (this: Viewer) => void;
    render(): void;
    updateView: (this: Viewer, force?: boolean, gatherAllNodes?: boolean) => void;
    getSplatMesh(): SplatMesh | null;
}