简化代码

src/GraphicsSystem/Viewer.ts

@@ -283,10 +283,7 @@ export class Viewer
     UpdateLockTarget()
     {
         let renderList = this.m_Render.renderLists.get(this.m_Scene, this.m_Camera.m_CurCamera);
-        let box = GeUtils.GetBoxArr(renderList.opaque.map(o =>
+        let box = GeUtils.GetBoxArr(renderList.opaque.map(o => o.object));
-        {
-            return o.object
-        }));
         if (box)
         {
             this.m_LookTarget = box.getCenter();