Resize render window in expose event to correctly scale the content (#74)

Author: greimela-si

rviz_rendering/src/rviz_rendering/render_window.cpp

@@ -180,6 +180,7 @@ RenderWindow::exposeEvent(QExposeEvent * expose_event)
   Q_UNUSED(expose_event);
 
   if (this->isExposed()) {
+    impl_->resize(this->width(), this->height());
     this->renderNow();
   }
 }