1

Assets/BITKit/Unity/Scripts/Scenes/Editor/MaterialPaletteWindow.cs

@@ -1,10 +1,12 @@
 using System;
 using System.Collections;
 using System.Collections.Generic;
+using System.Linq;
 using UnityEditor;
 using UnityEditor.UIElements;
 using UnityEngine;
 using UnityEngine.UIElements;
+using Object = UnityEngine.Object;
 
 namespace BITKit
 {
@@ -19,6 +21,8 @@ namespace BITKit
 		private Button buildButton;
 		private Label _titleLabel;
 		private VisualElement _container;
+
+		private MeshRenderer[] _renderers=Array.Empty<MeshRenderer>();
 		
 		private void OnEnable()
 		{
@@ -38,22 +42,52 @@ namespace BITKit
 
 		private void OnSelectionChanged()
 		{
-			var active = UnityEditor.Selection.activeGameObject;
+			var actives = UnityEditor.Selection.gameObjects;
 			
 			_container.Clear();
-
-			_titleLabel.text = active ? active.name : "未选择物体";
-			if (!active) return;
-			foreach (var x in active.GetComponentsInChildren<MeshRenderer>(true))
+			
+			_renderers = actives.SelectMany(x => x.GetComponentsInChildren<MeshRenderer>()).ToArray();
+			
+			var materials = _renderers.SelectMany(x => x.sharedMaterials).Distinct().ToArray();
+			
+			_titleLabel.text = actives is not {Length:0} ?$"选择了{actives.Length }个物体,{materials.Length}个材质" : "未选择物体";
+			
+			foreach (var material in materials)
 			{
-				foreach (var material in x.sharedMaterials)
+				var filed = _container.Create<ObjectField>();
+				filed.label = material.name;
+				filed.objectType = typeof(Material);
+				filed.allowSceneObjects = false;
+				filed.value = material;
+				filed.RegisterValueChangedCallback(OnChanged);
+			}
+		}
+
+		private void OnChanged(ChangeEvent<Object> evt)
+		{
+			if(evt.newValue is not Material value) return;
+			var list = new List<Object>();
+			foreach (var renderer in _renderers)
+			{
+				var sharedMaterials = renderer.sharedMaterials;
+				var isDirty = false;
+				for (var i = 0; i < sharedMaterials.Length; i++)
 				{
-					var filed = rootVisualElement.Create<ObjectField>();
-					filed.label = material.name;
-					filed.objectType = typeof(Material);
-					filed.value = material;
+					var current = sharedMaterials[i];
+					if(current != evt.previousValue) continue;
+					sharedMaterials[i] = value;
+					isDirty = true;
 				}
-				
+
+				if (!isDirty) continue;
+				renderer.sharedMaterials = sharedMaterials;
+				list.Add(renderer);
+				EditorUtility.SetDirty(renderer);
+			}
+
+			if (list.Count > 0)
+			{
+				OnSelectionChanged();
 			}
 		}
 	}