update

src/main/webapp/app/netTopology/ne-topology/ne-topology.component.ts

@@ -163,7 +163,7 @@ export class NeTopologyComponent implements OnInit, DoCheck, AfterViewInit, OnDe
 
         myCanvas.width = myCanvas.width * ratio;
         myCanvas.height = myCanvas.height * ratio;
-        context.scale(ratio, ratio);
+        // context.scale(ratio, ratio);
 
         editor.loadTopology('', '', 'img/backimg.png', canvasWidth, canvasHeight);
     }