Is there a GazeManager.Instance.HitInfo.collider but for motioncontroller pointer ray on opaque WMR headsets instead of the same on HoloLens?

Question

I would like to know if a built-in Mixed Reality ToolKit way to check whether ray projected from a motion controller visualized by MRTK-Unity when using the controllers with an occluded windows mixed reality headset is raycasting anything exists?

I can check this easily on HoloLens when using a GazeManager.Instance.HitInfo.collider != null condition, but since that Gaze Manager pertains to Gaze instead of MotionControllers I can't use that (at least in a way I know) to check if the defaultcursor which is controlled by the motioncontroller projected ray is being projected/raycsted onto something UI or not (and possibly later what)?

P.S. I saw that MRTK-Unity v2 plans to combine all the pointers (gaze and controllers/hands) in input manager class, but unless I'm wrong that's not available for HoloLens v1, I mean being able to get the pointer for controller since I looked at the InputManager prefab for v1 and couldn't find anything like that...right?

Answer 1

Simple raycasting could be implemented using Physics.Raycast() with parameters from a motion controller. The parameters can be taken from MRTK Input. As an example

void InteractionManager_InteractionSourcePressed(InteractionSourcePressedEventArgs args)
{
     var interactionSourceState = args.state;
     var sourcePose = interactionSourceState.sourcePose;
     Vector3 sourceGripPosition;
     Quaternion sourceGripRotation;
     if ((sourcePose.TryGetPosition(out sourceGripPosition, InteractionSourceNode.Pointer)) &&
         (sourcePose.TryGetRotation(out sourceGripRotation, InteractionSourceNode.Pointer))) {
         RaycastHit raycastHit;
         if (Physics.Raycast(sourceGripPosition, sourceGripRotation * Vector3.forward, out raycastHit, 10)) {
             var targetObject = raycastHit.collider.gameObject;
             // ...
         }
     }
}