HDReflectionProbe editor: clamp offset to contain object center

com.unity.render-pipelines.high-definition/HDRP/Editor/Lighting/Reflection/HDReflectionProbeUI.Drawers.cs

 
         static void Drawer_InfluenceShapeBoxSettings(HDReflectionProbeUI s, SerializedHDReflectionProbe p, Editor owner)
         {
-            EditorGUI.BeginChangeCheck();
 
             EditorGUILayout.BeginHorizontal();
             EditorGUILayout.PropertyField(p.boxSize, CoreEditorUtils.GetContent("Box Size|The size of the box in which the reflections will be applied to objects. The value is not affected by the Transform of the Game Object."));
             }
             EditorGUILayout.EndHorizontal();
+
+
+            EditorGUI.BeginChangeCheck();
             EditorGUILayout.BeginHorizontal();
             EditorGUILayout.PropertyField(p.boxOffset, CoreEditorUtils.GetContent("Box Offset|The center of the box in which the reflections will be applied to objects. The value is relative to the position of the Game Object."));
             if (GUILayout.Button(toolbar_Contents[3], GUILayout.Width(28f), GUILayout.Height(EditorGUIUtility.singleLineHeight + 3)))
             EditorGUILayout.EndHorizontal();
-
             if (EditorGUI.EndChangeCheck())
             {
                 var center = p.boxOffset.vector3Value;
-                    p.boxOffset.vector3Value = center;
-                    p.boxSize.vector3Value = size;
+                    //clamp to contains object center instead of resizing
+                    Vector3 projector = (center - p.boxOffset.vector3Value).normalized;
+                    p.boxOffset.vector3Value = center + Mathf.Abs(Vector3.Dot((p.boxSize.vector3Value - size) * .5f, projector)) * projector;
                 }
             }
         }