import type { NeedleXREventArgs } from "../../../engine/engine_xr.js";
import { Behaviour } from "../../Component.js";
/**
 * Add this script to an object and set `side` to make the object follow a specific controller.
 *
 * This can be useful to attach objects to controllers, for example a laser pointer or a 3D model of a tool.
 *
 * @example Make an object follow the right controller
 * ```ts
 * import { onStart, XRControllerFollow } from "@needle-tools/engine";
 * onStart(context => {
 *   const obj = context.scene.getObjectByName("MyObject");
 *   obj?.addComponent(XRControllerFollow, { side: "right", controller: true, hands: true });
 * });
 * ```
 *
 * @summary Makes the object follow a specific XR controller or hand
 * @category XR
 * @group Components
 * */
export declare class XRControllerFollow extends Behaviour {
    get activeAndEnabled(): boolean;
    /** Should this object follow a right hand/controller or left hand/controller.
     * When a number is provided, the controller with that index is followed.
     * @default "none"
     **/
    side: XRHandedness | number;
    /** should it follow controllers (the physics controller)
     * @default true
    */
    controller: boolean;
    /** should it follow hands (when using hand tracking in WebXR)
     * @default false
    */
    hands: boolean;
    /** Disable if you don't want this script to modify the object's visibility
     * If enabled the object will be hidden when the configured controller or hand is not available
     * If disabled this script will not modify the object's visibility
     * @default true
     */
    controlVisibility: boolean;
    /** when true it will use the grip space, otherwise the ray space
     * @default false
    */
    useGripSpace: boolean;
    /** when enabled the position, rotation and scale of this object will be set to the position it was at when it entered the XR session
     * @default true
    */
    resetTransformAfterXRSession: boolean;
    private readonly _startPosition;
    private readonly _startRotation;
    private readonly _startScale;
    /** @internal */
    onEnterXR(_args: NeedleXREventArgs): void;
    /** @internal */
    onUpdateXR(args: NeedleXREventArgs): void;
    /** @internal */
    onLeaveXR(_args: NeedleXREventArgs): void;
}