@pmndrs/xr/dist/pointer/event.js

VR/AR for threejs

export function bindXRInputSourceEvent(session, inputSource, event, fn) {
    const filterFn = (event) => {
        if (inputSource != 'all' && event.inputSource != inputSource) {
            return;
        }
        fn(event);
    };
    session.addEventListener(event, filterFn);
    return () => session.removeEventListener(event, filterFn);
}
export function bindPointerXRInputSourceEvent(pointer, session, inputSource, event, missingEvents, options = {}) {
    const downListener = (e) => {
        if (e.inputSource === inputSource) {
            pointer.down(Object.assign(e, { button: options.button ?? 0 }));
        }
    };
    const upListener = (e) => {
        if (e.inputSource === inputSource) {
            pointer.up(Object.assign(e, { button: options.button ?? 0 }));
        }
    };
    const downEventName = `${event}start`;
    const upEventName = `${event}end`;
    //missing events are required for transient pointers when the input source is registered asynchrounously
    //so that events directly emitted on initialization are still processed once the input source is created
    const length = missingEvents.length;
    for (let i = 0; i < length; i++) {
        const event = missingEvents[i];
        switch (event.type) {
            case downEventName:
                downListener(event);
                break;
            case upEventName:
                upListener(event);
                break;
        }
    }
    session.addEventListener(downEventName, downListener);
    session.addEventListener(upEventName, upListener);
    return () => {
        session.removeEventListener(downEventName, downListener);
        session.removeEventListener(upEventName, upListener);
    };
}