测试代码

src/app/working-area/working-area.component.ts

@@ -516,8 +516,8 @@ export class WorkingAreaComponent extends EventEmitter implements OnInit, AfterV
     tempCar2.position.set(25, 50);
 
     // 开始绘制管线
-    // this.beginPaintPipeline();
-    this.beginPaintingArrows();
+    this.beginPaintPipeline();
+    // this.beginPaintingArrows();
   }
 
   /**