!1449 修复:模块插入后报错

src/DatabaseServices/Template/ProgramTempate/TemplateVisualSpace.ts

@@ -1,9 +1,8 @@
-import { CADFiler } from "../../CADFiler";
-import { TemplateRecord } from "../TemplateRecord";
-import { AutoRecord } from "../../AutoRecord";
 import { VisualSpaceBox } from "../../../Editor/VisualSpaceBox";
-import { app } from "../../../ApplicationServices/Application";
+import { AutoRecord } from "../../AutoRecord";
 import { Factory } from "../../CADFactory";
+import { CADFiler } from "../../CADFiler";
+import { TemplateRecord } from "../TemplateRecord";
 
 @Factory
 export class TemplateVisualSpace extends TemplateRecord
@@ -18,13 +17,16 @@ export class TemplateVisualSpace extends TemplateRecord
     protected async Update()
     {
         await super.Update();
+        if (!this.Db) return;//如果没有绘制到DB空间,那么将不会进行更新(否则绘制失败)
+        //在这里重建虚拟空间,(未来我们可能会避免自动重建)
         if (this.Objects.length === 0 || this.Objects[0].Object === undefined)
         {
             this.Objects.length = 0;
             let visualEntity = new VisualSpaceBox(this.LParam.value as number, this.WParam.value as number, this.HParam.value as number);
             visualEntity.ApplyMatrix(this._CacheSpaceCS);
             visualEntity.SpaceOCS = this._CacheSpaceCS;
-            app.Database.ModelSpace.Append(visualEntity);
+            //这里避免使用app.Database,否则插入图纸后,会错误的在app的图纸里面绘制一个空间,导致程序错误.
+            this.Db.ModelSpace.Append(visualEntity);
             this.Objects.push(visualEntity.Id);
         }
         let visualEntity = this.Objects[0].Object as VisualSpaceBox;