Updated ScenePartitionViewEditor

- Grid is now drawn based on the cell size of the current active open scene
- Added function to get ScenePartitionSO of current active scene

Editor/ScenePartitionUtils.cs

@@ -57,5 +57,35 @@ namespace VertexColor.ScenePartition.Editor
                 }
             }
         }
+
+        public static bool TryGetScenePartitionSOForActiveScene(out ScenePartitionSO scenePartitionSO)
+        {
+            scenePartitionSO = null;
+
+            UnityEngine.SceneManagement.Scene activeScene = UnityEngine.SceneManagement.SceneManager.GetActiveScene();
+
+            if (activeScene == null) return false;
+
+            string filter = $"t:{nameof(ScenePartitionSO)}";
+            string[] assets = AssetDatabase.FindAssets(filter);
+
+            if (assets == null || assets.Length <= 0) return false;
+
+            for (int i = 0; i < assets.Length; i++)
+            {
+                string path = AssetDatabase.GUIDToAssetPath(assets[i]);
+                ScenePartitionSO scenePartition = AssetDatabase.LoadAssetAtPath<ScenePartitionSO>(path);
+
+                if (scenePartition == null) continue;
+
+                if (scenePartition.SceneName == activeScene.name)
+                {
+                    scenePartitionSO = scenePartition;
+                    return true;
+                }
+            }
+
+            return false;
+        }
     }
 }