From 0e8795b159378f15dcd15afeb81416611fdc7d6f Mon Sep 17 00:00:00 2001
From: Lovisa Hassler <lovha997@student.liu.se>
Date: Mon, 29 Oct 2018 17:35:07 -0400
Subject: [PATCH] added check for getting a scenegraphnode for dish, error if
 it is not in asset file

---
 modules/dsn/rendering/communicationlines.cpp | 16 ++++++++++++++--
 1 file changed, 14 insertions(+), 2 deletions(-)

diff --git a/modules/dsn/rendering/communicationlines.cpp b/modules/dsn/rendering/communicationlines.cpp
index 87c6e4ec4b..c975e79f41 100644
--- a/modules/dsn/rendering/communicationlines.cpp
+++ b/modules/dsn/rendering/communicationlines.cpp
@@ -91,7 +91,10 @@ namespace openspace {
             int activeFileIndex = findFileIndexForCurrentTime(currentTime);
             //parse data for that file
             if (!DsnManager::_dsnData.isLoaded)
+            {
                 DsnManager::jsonParser(activeFileIndex);
+
+            }
             else
                 return;
         }
@@ -237,9 +240,18 @@ namespace openspace {
 
     RenderableCommunicationPackage::PositionVBOLayout 
         CommunicationLines::getPositionForGeocentricSceneGraphNode(const char* id) {
-
-        glm::vec3 nodePos = global::renderEngine.scene()->sceneGraphNode(id)->position();
+        
         RenderableCommunicationPackage::PositionVBOLayout position;
+        glm::dvec3 nodePos;
+
+        if (global::renderEngine.scene()->sceneGraphNode(id)) {
+            nodePos = global::renderEngine.scene()->sceneGraphNode(id)->position();
+        }
+        else {
+            LERROR(fmt::format("No position data for the station dish {}, drawing line from center of Earth", id));
+            nodePos = glm::vec3(0, 0, 0);
+        }
+
         position.x = nodePos.x;
         position.y = nodePos.y;
         position.z = nodePos.z;