优化拾取点的提示

src/Add-on/Stretch.ts

@@ -15,16 +15,9 @@ export class Stretch implements Command
     async exec(ss: SelectSet)
     {
         if (ss.SelectObjectList.length == 0)
-        {
             return;
-        }
-        app.m_Editor.m_CommandStore.commandPrompt = "请选择第一个拉伸点:";
-
         let p1 = await app.m_Editor.GetPoint({ Msg: "请选择第一个拉伸点:" });
         if (p1.Status != PromptStatus.OK) return;
-
-        app.m_Editor.m_CommandStore.commandPrompt = "请选择第二个拉伸点:";
-
         let data = this.parse(ss);
         for (let [obj] of data.str)
             app.m_Editor.AddNoSnapEntity(obj);

src/Editor/GetPointServices.ts

@@ -209,9 +209,11 @@ export class GetPointServices
 
     private initPrompt(prompt: GetPointPrompt)
     {
+        prompt.Msg = prompt.Msg || "请输入一个点:";
         if (prompt.Msg)
         {
             app.m_Editor.m_CommandStore.commandPrompt = prompt.Msg;
+            app.m_Editor.m_CommandStore.Prompt(prompt.Msg);
             this.removeCalls.push(() =>
             {
                 app.m_Editor.m_CommandStore.commandPrompt = "";