three#XRSession TypeScript Examples

The following examples show how to use three#XRSession. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example #1
Source File: menu.tsx    From spacesvr with MIT License 5 votes vote down vote up 
useVRMenuItem = (): MenuItem | undefined => {
  const gl = useThree((state) => state.gl);
  const { setDevice, setPaused } = useEnvironment();

  // @ts-ignore
  const xr = navigator.xr;

  const session = useRef<XRSession>();
  const [text, setText] = useState("Enter VR");
  const [supported, setSupported] = useState(false);

  useEffect(() => {
    const isSupported = async () => {
      if (!("xr" in window.navigator)) {
        setSupported(false);
        return;
      }

      const support = await xr.isSessionSupported("immersive-vr");
      setSupported(support);
    };

    isSupported();
  }, []);

  if (!supported) {
    return undefined;
  }

  const action = () => {
    async function onSessionStarted(sesh: XRSession) {
      sesh.addEventListener("end", onSessionEnded);
      await gl.xr.setSession(sesh);
      setText("Exit VR");
      setDevice("xr");
      setPaused(false);
      session.current = sesh;
    }

    function onSessionEnded() {
      session.current?.removeEventListener("end", onSessionEnded);
      setDevice(isMobile ? "mobile" : "desktop");
      setText("Enter VR");
      setPaused(true);
      session.current = undefined;
    }

    if (session.current === undefined) {
      const sessionInit = {
        optionalFeatures: ["local-floor", "bounded-floor", "hand-tracking"],
      };
      xr.requestSession("immersive-vr", sessionInit).then(onSessionStarted);
    } else {
      session.current?.end();
    }
  };

  return {
    text,
    action,
  };
}