Add vertical offset in the direction the object is placed on the plane.

Author: neogeek

Scripts/ARPlaceObjectOnPlane.cs

@@ -55,7 +55,9 @@ public void PlaceObjectOnPlane(Pose pose, ARPlane plane)
 
             objectToPlaceGameObject.SetActive(true);
 
-            objectToPlaceGameObject.transform.position = pose.position + new Vector3(0, verticalOffset, 0);
+            objectToPlaceGameObject.transform.position =
+                pose.position + pose.up.normalized * verticalOffset;
+
             objectToPlaceGameObject.transform.rotation = pose.rotation;
 
             if (plane.alignment.Equals(PlaneAlignment.None) || plane.alignment.Equals(PlaneAlignment.NotAxisAligned))

Scripts/ARShowPlacementMarkerOnPlane.cs

@@ -56,7 +56,9 @@ public void ShowPlacementMarkerOnPlane(bool planeVisible, Pose pose, ARPlane pla
 
                 _placementMarkerGameObject.SetActive(true);
 
-                _placementMarkerGameObject.transform.position = pose.position + new Vector3(0, verticalOffset, 0);
+                _placementMarkerGameObject.transform.position =
+                    pose.position + pose.up.normalized * verticalOffset;
+
                 _placementMarkerGameObject.transform.rotation = pose.rotation;
 
                 if (plane.alignment.Equals(PlaneAlignment.None) ||