@threlte/xr/dist/hooks/useHand.svelte.js

Tools to more easily create VR and AR experiences with Threlte

import { getHandState } from '../internal/inputSources.svelte.js';
import { runeToCurrentReadable } from './currentReadable.svelte.js';
const handObjects = new WeakMap();
const toXRHandObject = (state) => {
    if (state === undefined)
        return undefined;
    let hand = handObjects.get(state);
    if (hand !== undefined)
        return hand;
    hand = {
        targetRay: state.targetRay,
        hand: state.hand,
        model: state.model,
        inputSource: state.inputSource.hand
    };
    handObjects.set(state, hand);
    return hand;
};
class Hands {
    get left() {
        return toXRHandObject(getHandState('left'));
    }
    get right() {
        return toXRHandObject(getHandState('right'));
    }
}
export const hands = new Hands();
/**
 * Provides a reference to a current XRHand, filtered by handedness.
 */
export const useHand = (handedness) => {
    switch (handedness) {
        case 'left':
            return runeToCurrentReadable(() => hands.left);
        case 'right':
            return runeToCurrentReadable(() => hands.right);
        default:
            throw new Error('useHand handedness must be left or right.');
    }
};