code clean up with center screen helper, added additional placement prefab for fog scene

Assets/Common/Scripts/CenterScreenHelper.cs

         {
             Destroy(this);
         }
+        
         m_CurrentOrientation = Screen.orientation;
         m_CurrentWidth = Screen.width;
         m_MidPointWidth = Screen.width / 2;
         {
             m_CenterScreenVert = new Vector2(m_MidPointWidth, m_MidPointHeight);
             m_CenterScreenHor = new Vector2(m_MidPointHeight, m_MidPointWidth);
-            
-        if (m_CurrentOrientation == ScreenOrientation.Landscape)
-        {
-            return m_CenterScreenHor;
-        }
-        else
-        {
-            return m_CenterScreenVert;
-        }
-    }
-
-    void Update()
-    {
+
+        return m_CurrentOrientation == ScreenOrientation.Landscape ? m_CenterScreenHor : m_CenterScreenVert;
     }
 }

Assets/Common/Scripts/PlacementReticle.cs

     static List<ARRaycastHit> s_Hits = new List<ARRaycastHit>();
     const float k_MinScaleDistance = 0.0f;
     const float k_MaxScaleDistance = 1.0f;
+    const float k_ScaleMod = 1.0f;
     
     void Start()
     {
         if (m_DistanceScale)
         {
             m_CurrentDistance = Vector3.Distance(m_SpawnedReticle.transform.position, m_CameraTransform.position);
-            m_CurrentNormalizedDistance = ((Mathf.Abs(m_CurrentDistance - k_MinScaleDistance)) / (k_MaxScaleDistance - k_MinScaleDistance))+1;
+            m_CurrentNormalizedDistance = ((Mathf.Abs(m_CurrentDistance - k_MinScaleDistance)) / (k_MaxScaleDistance - k_MinScaleDistance))+k_ScaleMod;
             m_SpawnedReticle.transform.localScale = new Vector3(m_CurrentNormalizedDistance, m_CurrentNormalizedDistance, m_CurrentNormalizedDistance);
         }
     }
-        // if not active ie: not snapping to a plane return null
-        if (!m_SpawnedReticle.activeSelf)
-        {
-            return null;
-        }
-        
         return m_SpawnedReticle.transform;
     }
 }

Assets/Meshing/Scripts/MeshClassificationManager.cs

         set => m_MainCamera = value;
     }
     
-    Vector2 m_ScreenCenter;
     RaycastHit m_Hit;
     TrackableId m_CurrentTrackableID;
     XRMeshSubsystem m_MeshSubsystem;
 
     void OnEnable()
     {
-        m_ScreenCenter = new Vector2(Screen.width / 2, Screen.height / 2);
         m_MeshSubsystem = m_MeshManager.subsystem;
         m_MeshSubsystem.SetClassificationEnabled(true);
 
 
     void Update()
     {
-        if (Physics.Raycast(m_MainCamera.ScreenPointToRay(m_ScreenCenter), out m_Hit))
+        if (Physics.Raycast(m_MainCamera.ScreenPointToRay(CenterScreenHelper.Instance.GetCenterScreen()), out m_Hit))
         {
             SetCurrentClassification(ExtractTrackableId(m_Hit.transform.name), m_Hit.triangleIndex);
             m_CurrentClassificationLabel.text = GetClassificationName(m_CurrentClassification);

Assets/Shaders/Scenes/Fog.unity

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     type: 3}
   m_MaxNumberOfObjectsToPlace: 1
 --- !u!114 &1614374573

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-    path: Assets/ImageTracking/Scenes/ImageTracking.unity
-    guid: 90c9c5e58ea6f4125979d49ff7533aee
-  - enabled: 0
-    path: Assets/UX/Scenes/UXManagerScene.unity
-    guid: 5d9539f4c7ee5c74c85a038c90cb6e1b
-  - enabled: 1
-    path: Assets/Meshing/Scenes/Meshing.unity
-    guid: d5ebb81bb19834855bb7ca490ab73fbf
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