Is it possible to calculate the ray from the center of an XR headset

Questions
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1

I’m working on an XR game that’s playable without a controller. As part of it, I need to calculate a ray from the center of the headset for firing a projectile. Is there any way of doing this?

2

I haven’t actually tested it, but I think the code would work.

    // enable xr
    let xr = await BABYLON.WebXRExperienceHelper.CreateAsync(scene);

    // on input
    let ray = xr.camera.getForwardRay()
    let { origin, direction } = ray
    // do something
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