开发:简化代码

src/GraphicsSystem/Viewer.ts

@@ -478,9 +478,8 @@ export class Viewer
         }
 
         let box = new Box3();
-        ens.reduce((b, e) => b.union(e.BoundingBox), box);
-        if (box.isEmpty())
-            return;
+        for (let e of ens) box.union(e.BoundingBox);
+        if (box.isEmpty()) return;
         this.CameraCtrl.ZoomExtensBox3(box);
         this.CameraCtrl.Zoom(1.2);
         this.UpdateRender();