More work on ephemerides

include/openspace/scenegraph/scenegraphnode.h

@@ -84,7 +84,7 @@ private:
     std::vector<SceneGraphNode*> _children;
     SceneGraphNode* _parent;
     std::string _nodeName;
-    Ephemeris* _position;
+    Ephemeris* _ephemeris;
 
     // renderable
     Renderable* _renderable;

include/openspace/util/constants.h

@@ -53,6 +53,10 @@ namespace scenegraphnode {
 
 namespace renderable {
     const std::string keyType = "Type";
+} // namespace renderable
+
+namespace ephemeris {
+    const std::string keyType = "Type";
 }
 
 }  // namespace constants