import { Group } from 'three';
import { RefObject } from 'react';
export declare const BODY_HAND_JOINT_KEYS: string[];
export declare const BODY_LEFT_HAND_JOINT_KEYS: XRBodyJoint[];
export declare const BODY_RIGHT_HAND_JOINT_KEYS: XRBodyJoint[];
export declare const BODY_JOINT_KEYS: XRBodyJoint[];
export interface BodyData {
    body: number[];
    leftHand: number[];
    rightHand: number[];
}
export interface BodyDataCache {
    body?: Float32Array;
    leftHand?: Float32Array;
    rightHand?: Float32Array;
}
export declare function setMatrices({ xrBody, xrFrame, refSpace, jointArr, jointKeys, }: {
    xrBody: XRBody;
    xrFrame: XRFrame;
    refSpace: XRReferenceSpace;
    jointArr: Float32Array;
    jointKeys: XRBodyJoint[];
}): void;
export declare function syncGroupRefMatrix({ groupRef, bodiesData, }: {
    groupRef: RefObject<Group>;
    bodiesData: Body;
}): void;