当打开图形时,对旧的图形进行清除.

src/GraphicsSystem/Viewer.ts

@@ -257,10 +257,10 @@ export class Viewer
         })
         xaop.begin(db.ModelSpace, db.ModelSpace.Destroy, () =>
         {
-            this.m_Scene.children.filter((o) =>
+            for (let en of db.ModelSpace.objectCol)
             {
-                return o.userData && o.userData instanceof Entity;
+                (<Entity>en).GoodBye();
-            })
+            }
         })
         xaop.end(db.ModelSpace, db.ModelSpace.ReadFile, () =>
         {