更新

Assets/OtherPlugins/GraphicsCat/Modules/Common/Utils/GameViewUtils.cs

@@ -0,0 +1,60 @@
+using System;
+using System.Reflection;
+using UnityEngine;
+using UnityEditor;
+
+namespace GraphicsCat
+{
+    public class GameViewUtils
+    {
+#if UNITY_EDITOR
+        // Don't retrieve it every time, otherwise the Editor will also be slow
+        static Type s_GameViewType;
+        static EditorWindow s_GameViewWindow;
+        static FieldInfo s_GameViewZoomAreaField;
+
+        public static float GetGameViewScale()
+        {
+            if (s_GameViewType == null)
+            {
+                s_GameViewType = GetGameViewType();
+                s_GameViewZoomAreaField = s_GameViewType.GetField("m_ZoomArea", System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.NonPublic);
+            }
+
+            if (s_GameViewWindow == null)
+                s_GameViewWindow = GetGameViewWindow(s_GameViewType);
+
+            if (s_GameViewWindow != null)
+            {
+
+                var areaObj = s_GameViewZoomAreaField.GetValue(s_GameViewWindow);
+                var scaleField = areaObj.GetType().GetField("m_Scale", System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.NonPublic);
+                var scale = (Vector2)scaleField.GetValue(areaObj);
+                return scale.x;
+            }
+
+            return 1;
+        }
+
+        static Type GetGameViewType()
+        {
+            Assembly unityEditorAssembly = typeof(EditorWindow).Assembly;
+            Type gameViewType = unityEditorAssembly.GetType("UnityEditor.GameView");
+            return gameViewType;
+        }
+
+        static EditorWindow GetGameViewWindow(Type gameViewType)
+        {
+            UnityEngine.Object[] obj = Resources.FindObjectsOfTypeAll(gameViewType);
+            if (obj.Length > 0)
+                return obj[0] as EditorWindow;
+            return null;
+        }
+#else
+        public static float GetGameViewScale()
+        {
+            return 1;
+        }
+#endif
+    }
+}