add package files

com.htc.upm.vive.openxr/OpenXRHandTracking/Samples~/Scripts/LineRender.cs

@@ -0,0 +1,39 @@
+using System;
+using UnityEngine.InputSystem;
+using UnityEngine.UI;
+using UnityEngine;
+
+
+public class LineRender : MonoBehaviour
+{
+    [Tooltip("Root object of Line mesh")]
+    public GameObject Line = null;
+    [SerializeField] private LineRenderer GazeRayRenderer;
+
+    [SerializeField]
+    private InputActionReference m_ActionReferencePose;
+    public InputActionReference actionReferencePose { get => m_ActionReferencePose; set => m_ActionReferencePose = value; }
+
+    // Update is called once per frame
+    void Update()
+    {
+        Vector3 DirectionCombinedLocal;
+        if (actionReferencePose != null && actionReferencePose.action != null
+            && actionReferencePose.action.enabled && actionReferencePose.action.controls.Count > 0)
+        {
+            //GazeRayRenderer.SetActive(true);
+            UnityEngine.XR.OpenXR.Input.Pose poseval = actionReferencePose.action.ReadValue<UnityEngine.XR.OpenXR.Input.Pose>();
+            Quaternion gazeRotation = poseval.rotation;
+            Quaternion orientation = new Quaternion(
+                1 * (gazeRotation.x),
+                1 * (gazeRotation.y),
+                1 * gazeRotation.z,
+                1 * gazeRotation.w);
+            DirectionCombinedLocal = orientation * Vector3.forward;
+            Vector3 DirectionCombined = Camera.main.transform.TransformDirection(DirectionCombinedLocal);
+            GazeRayRenderer.SetPosition(0, poseval.position);
+            GazeRayRenderer.SetPosition(1, poseval.position + DirectionCombinedLocal * 4);
+        }
+    }
+
+}