修复显示错误

src/Common/Dispose.ts

@@ -14,5 +14,8 @@ export function DisposeThreeObj(obj: Object3D)
             //@ts-ignores
             o.geometry.dispose();
     });
+
+    for (let c of obj.children)
+        c.dispatchEvent({ type: 'removed' });
     obj.children.length = 0;
 }

src/DatabaseServices/Entity/Entity.ts

@@ -326,12 +326,8 @@ export class Entity extends CADObject
         if (this._drawObject)
         {
             this._drawObject.visible = this.IsVisible;
-            if (this._drawObject.children.length === 0 && this.IsVisible)
-            {
-                let obj = this.GetDrawObjectFromRenderType(userConfig.RenderType);
-                if (obj) this._drawObject.add(obj);
-                this._drawObject.userData.Entity = this;
-            }
+            if (this.IsVisible)
+                this.UpdateRenderType(userConfig.RenderType);
         }
     }