Undo.CreateSnapshot 创建快照


static function CreateSnapshot () : void

Description描述

Save the current state of all objects set with SetSnapshotTarget to internal snapshot.

保存对象当前的状态快照，这些对象是通过SetSnapshotTarget设置的。

参见：SetSnapshotTarget , RegisterSnapshotTarget.

// Editor Script Side// Create a position Handle and make the target always look at the position handle.// This is an editor Script, this should go inside the Editor Folder.//创建一个手柄位置，并使目标始终看向手柄位置@CustomEditor (LookAtPoint)class SnapshotTargetEx extends Editor {function OnSceneGUI () {Undo.SetSnapshotTarget(target, "Moved Object Around");target.lookAtPoint =Handles.PositionHandle(target.lookAtPoint, Quaternion.identity);if (GUI.changed)EditorUtility.SetDirty (target);if(Input.GetMouseButtonDown(0)) {// Register the undos when we press the Mouse button.//当按下鼠标键注册undoUndo.CreateSnapshot();Undo.RegisterSnapshot();}}}

And the runtime script that works with this editor Script 

// LookAtPoint.js@script ExecuteInEditMode()var lookAtPoint = Vector3.zero;function Update () {transform.LookAt (lookAtPoint);}


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