import { Material, Mesh, Object3D } from "three";
import { Behaviour } from "../../Component.js";
import { EventList } from "../../EventList.js";
import type { IUSDExporterExtension } from "./Extension.js";
/**
 * Custom branding for the QuickLook overlay, used by {@link USDZExporter}.
 */
export declare class CustomBranding {
    /** The call to action button text. If not set, the button will close the QuickLook overlay. */
    callToAction?: string;
    /** The title of the overlay. */
    checkoutTitle?: string;
    /** The subtitle of the overlay. */
    checkoutSubtitle?: string;
    /** if assigned the call to action button in quicklook will open the URL. Otherwise it will just close quicklook. */
    callToActionURL?: string;
}
type BeforeLODExportArguments = {
    readonly exporter: USDZExporter;
    /** The type of LOD being exported, either a texture or a mesh */
    readonly type: "texture" | "mesh";
    /** The Renderer gameobject */
    readonly object: Object3D;
    /** The mesh being exported, if applicable */
    readonly mesh?: Mesh;
    /** The material being exported, if applicable */
    readonly material?: Material;
    /** By default LOD 0 will be exported (highest quality).
     * Set to a different LOD level if needed.
     * Set to -1 to disable LOD export and simply export the current version.
    */
    overrideLevel?: number;
};
/**
 * USDZExporter creates USDZ files and opens them in Apple QuickLook on iOS/iPadOS/visionOS.
 * Enables "View in AR" functionality for Apple devices directly from web experiences.
 *
 * **Key features:**
 * - Auto-exports animations and audio sources
 * - Interactive behaviors via Needle's "Everywhere Actions" system
 * - RealityKit physics support (iOS 18+, visionOS 1+)
 * - Custom QuickLook overlay with call-to-action buttons
 * - Progressive texture/mesh LOD handling
 *
 * [![](https://cloud.needle.tools/-/media/YyUz1lUVlOhEY4fWZ-oMsA.gif)](https://engine.needle.tools/samples/?overlay=samples&tag=usdz)
 *
 * **Automatic setup:**
 * - Creates QuickLook button on compatible devices
 * - Respects {@link XRFlag} for AR-specific visibility
 * - Handles {@link WebARSessionRoot} scale
 *
 * **Custom extensions:**
 * Add custom behaviors by implementing {@link IUSDExporterExtension} and adding to {@link extensions} array.
 *
 * **Debug:** Use `?debugusdz` URL parameter. Press 'T' to trigger export.
 *
 * @example Basic USDZ export
 * ```ts
 * const exporter = myObject.addComponent(USDZExporter);
 * exporter.objectToExport = productModel;
 * exporter.autoExportAnimations = true;
 * exporter.interactive = true; // Enable QuickLook behaviors
 *
 * // Trigger export
 * await exporter.exportAndOpen();
 * ```
 *
 * @example Custom branding
 * ```ts
 * exporter.customBranding = {
 *   callToAction: "Buy Now",
 *   checkoutTitle: "Product Name",
 *   callToActionURL: "https://shop.example.com"
 * };
 * ```
 *
 * @summary Export 3D objects as USDZ files for Apple QuickLook AR
 * @category XR
 * @group Components
 * @see {@link WebXR} for WebXR-based AR/VR
 * @see {@link WebARSessionRoot} for AR placement and scaling
 * @see {@link XRFlag} for AR-specific object visibility
 * @see {@link CustomBranding} for QuickLook overlay customization
 * @link https://engine.needle.tools/samples/?overlay=samples&tag=usdz
 */
export declare class USDZExporter extends Behaviour {
    /** Called before the USDZ file is exported */
    static readonly beforeExport: EventList<{
        readonly exporter: USDZExporter;
    }>;
    /** Called after the USDZ file has been exported */
    static readonly afterExport: EventList<{
        readonly exporter: USDZExporter;
    }>;
    /** Called before LOD level are exported. Can be used to override the LOD export settings */
    static readonly beforeLODExport: EventList<BeforeLODExportArguments>;
    /**
     * Assign the object to export as USDZ file. If undefined or null, the whole scene will be exported.
     */
    objectToExport: Object3D | null | undefined;
    /** Collect all Animations/Animators automatically on export and emit them as playing at the start.
     * Animator state chains and loops will automatically be collected and exported in order as well.
     * If this setting is off, Animators need to be registered by components – for example from PlayAnimationOnClick.
    */
    autoExportAnimations: boolean;
    /** Collect all AudioSources automatically on export and emit them as playing at the start.
     * They will loop according to their settings.
     * If this setting is off, Audio Sources need to be registered by components – for example from PlayAudioOnClick.
    */
    autoExportAudioSources: boolean;
    exportFileName: string | null | undefined;
    customUsdzFile: string | null | undefined;
    customBranding?: CustomBranding;
    anchoringType: "plane" | "image" | "face" | "none";
    maxTextureSize: 256 | 512 | 1024 | 2048 | 4096 | 8192;
    planeAnchoringAlignment: "horizontal" | "vertical" | "any";
    /** Enabling this option will export QuickLook-specific preliminary behaviours along with the USDZ files.
     * These extensions are only supported on QuickLook on iOS/visionOS/MacOS.
     * Keep this option off for general USDZ usage.
     */
    interactive: boolean;
    /** Enabling this option will export the USDZ file with RealityKit physics components.
     * Rigidbody and Collider components will be converted to their RealityKit counterparts.
     * Physics are supported on QuickLook in iOS 18+ and VisionOS 1+.
     * Physics export is automatically turned off when there are no Rigidbody components anywhere on the exported object.
     */
    physics: boolean;
    allowCreateQuicklookButton: boolean;
    quickLookCompatible: boolean;
    /**
     * Extensions to add custom behaviors and interactions to the USDZ file.
     * You can add your own extensions here by extending {@link IUSDExporterExtension}.
     */
    extensions: IUSDExporterExtension[];
    private link;
    private button?;
    /** @internal */
    start(): void;
    /** @internal */
    onEnable(): void;
    /** @internal */
    onDisable(): void;
    private onClickedOpenInARElement;
    /**
     * Creates an USDZ file from the current scene or assigned objectToExport and opens it in QuickLook.
     * Use the various public properties of USDZExporter to customize export behaviour.
     * @deprecated use {@link exportAndOpen} instead
     */
    exportAsync(): Promise<Blob | null>;
    /**
     * Creates an USDZ file from the current scene or assigned objectToExport and opens it in QuickLook.
     * @returns a Promise<Blob> containing the USDZ file
     */
    exportAndOpen(): Promise<Blob | null>;
    /**
     * Creates an USDZ file from the current scene or assigned objectToExport and opens it in QuickLook.
     * @returns a Promise<Blob> containing the USDZ file
     */
    export(objectToExport: Object3D | undefined): Promise<Blob | null>;
    private readonly _currentExportTasks;
    private _previousTimeScale;
    private internalExport;
    /**
     * Opens QuickLook on iOS/iPadOS/visionOS with the given content in AR mode.
     * @param content The URL to the .usdz or .reality file or a blob containing an USDZ file.
     * @param name Download filename
     */
    openInQuickLook(content: Blob | string, name: string): void;
    /**
     * Downloads the given blob as a file.
     */
    download(blob: Blob, name: string): void;
    private static save;
    private lastCallback?;
    private quicklookCallback;
    private buildQuicklookOverlay;
    private static invertForwardMatrix;
    private static invertForwardQuaternion;
    private _rootSessionRootWasAppliedTo;
    private _rootPositionBeforeExport;
    private _rootRotationBeforeExport;
    private _rootScaleBeforeExport;
    getARScaleAndTarget(): {
        scale: number;
        _invertForward: boolean;
        target: Object3D;
        sessionRoot: Object3D | null;
    };
    private applyWebARSessionRoot;
    private revertWebARSessionRoot;
    private createQuicklookButton;
}
export {};