updated field naming

Assets/Scenes/LightEstimation/FacingDirectionManager.cs

 namespace UnityEngine.XR.ARFoundation.Samples
 {
     /// <summary>
-    /// On ARKit, HDR light estimation only works in face tracking mode.
-    /// On ARCore, HDR light estimation only works when NOT in face tracking mode.
-    /// This script enables face tracking on iOS and disables it otherwise.
+    /// This script enables face tracking with user facing camera and disables it otherwise.
+    /// It enables the world space object with world facing camera and disables it otherwise.
     /// </summary>
     [RequireComponent(typeof(ARSessionOrigin))]
     [RequireComponent(typeof(ARFaceManager))]
-        [SerializeField]
+        [SerializeField] 
         GameObject m_WorldSpaceObject;
 
         public GameObject worldSpaceObject
         }
 
-        CameraFacingDirection updatedCameraFacingDirection;
-        CameraFacingDirection originalCameraFacingDirection;
+        CameraFacingDirection m_CurrentCameraFacingDirection;
+        ARCameraManager m_CameraManager;
+
-            originalCameraFacingDirection = GetComponentInChildren<ARCameraManager>().currentFacingDirection;
-            updatedCameraFacingDirection = originalCameraFacingDirection;
+            m_CameraManager = GetComponentInChildren<ARCameraManager>();
+            m_CurrentCameraFacingDirection = m_CameraManager.currentFacingDirection;
-            updatedCameraFacingDirection = GetComponentInChildren<ARCameraManager>().currentFacingDirection;
-            if (updatedCameraFacingDirection != CameraFacingDirection.None && updatedCameraFacingDirection != originalCameraFacingDirection)
+            var updatedCameraFacingDirection = m_CameraManager.currentFacingDirection;
+            if (updatedCameraFacingDirection != CameraFacingDirection.None && updatedCameraFacingDirection != m_CurrentCameraFacingDirection)
-                    originalCameraFacingDirection = updatedCameraFacingDirection;
+                    m_CurrentCameraFacingDirection = updatedCameraFacingDirection;
-                    originalCameraFacingDirection = updatedCameraFacingDirection;
+                    m_CurrentCameraFacingDirection = updatedCameraFacingDirection;
                     GetComponent<ARFaceManager>().enabled = false;
                     worldSpaceObject.SetActive(true);
                     Application.onBeforeRender += OnBeforeRender;
             }
         }
     }
-}
+}