Improved the culling result of HizCulling;

Added custom inspector for VolumeObject;
Change the name of AoVolume to VolumeObject;

Editor/View/VolumeObjectView.cs

@@ -0,0 +1,59 @@
+using UnityEditor;
+using UnityEditor.IMGUI.Controls;
+using UnityEngine;
+using UnityEngine.UIElements;
+
+namespace Misaki.AoVolume.Editor
+{
+    [CustomEditor(typeof(VolumeObject))]
+    [CanEditMultipleObjects]
+    public class VolumeObjectView : UnityEditor.Editor
+    {
+        [SerializeField]
+        private VisualTreeAsset _viewAsset;
+
+        private readonly BoxBoundsHandle _boundsHandle = new()
+        {
+            wireframeColor = Color.green,
+            handleColor = Color.green
+        };
+
+        public override VisualElement CreateInspectorGUI()
+        {
+            if (_viewAsset == null)
+            {
+                return null;
+            }
+
+            var view = _viewAsset.Instantiate();
+            view.dataSource = target;
+
+            view.Q<Button>("force-update-button").clicked += () =>
+            {
+                var volumeObject = target as VolumeObject;
+                volumeObject.ForceDataUpdate();
+            };
+
+            return view;
+        }
+
+        private void OnSceneGUI()
+        {
+            var volume = (VolumeObject)target;
+
+            using (new Handles.DrawingScope(volume.transform.localToWorldMatrix))
+            {
+                _boundsHandle.center = Vector3.zero;
+                _boundsHandle.size = volume.data.size;
+
+                EditorGUI.BeginChangeCheck();
+                _boundsHandle.DrawHandle();
+                if (EditorGUI.EndChangeCheck())
+                {
+                    Undo.RecordObject(volume, string.Format("Change {0} Volume Size", target.name));
+                    volume.data.size = _boundsHandle.size;
+                }
+            }
+        }
+    }
+}