将Undo,Redo改成透明命令

src/Add-on/Undo.ts

@@ -4,6 +4,7 @@ import { Command } from '../Editor/CommandMachine';
 export class Undo implements Command
 {
     NoHistory = true;
+    Transparency = true;
     async exec()
     {
         app.Database.hm.Undo();
@@ -14,6 +15,7 @@ export class Undo implements Command
 export class Redo implements Command
 {
     NoHistory = true;
+    Transparency = true;
     async exec()
     {
         app.Database.hm.Redo();

src/Add-on/ViewChange.ts

@@ -6,6 +6,7 @@ import { Orbit } from "../Geometry/Orbit";
 export class ViewChange implements Command
 {
     NoHistory = true;
+    Transparency = true;
     constructor(private viewDir: Vector3, private useWCS = false)
     {
         viewDir.normalize();

src/Editor/CommandMachine.ts

@@ -11,6 +11,8 @@ export interface Command
      * 这些命令没有历史记录,但如果不增加约束,可能会破坏历史
      */
     NoHistory?: boolean;
+    //透明命令,透明命令没有历史记录,也不占用命令状态,也无视命令状态.
+    Transparency?: boolean;
     exec: Function;//函数可以返回true,实现放弃命令的任何操作.
 }
 
@@ -31,6 +33,13 @@ class CommandMachine
             app.Editor.CommandStore.historyCmdList.push(cmdName);
 
             let cmd = this.CommandMap.get(cmdName);
+            if (cmd.Transparency)
+            {
+                await cmd.exec();
+                app.Editor.UpdateScreen();
+                return;
+            }
+
             this.CommandStart(cmdName, cmd.NoHistory);
             app.Editor.SelectCtrl.RestState();
             let abort: boolean = true;