From ddef663b079ae20368910457fff5c4648de30937 Mon Sep 17 00:00:00 2001
From: Poh Zhi-Ee <ZhiEe-Poh@ecosysgrp.com>
Date: Thu, 13 Aug 2020 10:01:48 +0800
Subject: [PATCH] Add checks for marker parent

Signed-off-by: Poh Zhi-Ee <poh140996@hotmail.com>
---
 src/rendering/MarkerManager.cc | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/rendering/MarkerManager.cc b/src/rendering/MarkerManager.cc
index 87373a69fc0..be46f91f423 100644
--- a/src/rendering/MarkerManager.cc
+++ b/src/rendering/MarkerManager.cc
@@ -498,7 +498,10 @@ bool MarkerManagerPrivate::ProcessMarkerMsg(const ignition::msgs::Marker &_msg)
       visualPtr->AddGeometry(markerPtr);
 
       // Add visual to root visual
-      this->scene->RootVisual()->AddChild(visualPtr);
+      if (!visualPtr->HasParent())
+      {
+          this->scene->RootVisual()->AddChild(visualPtr);
+      }
 
       // Store the visual
       this->visuals[ns][id] = visualPtr;