Performance optimization: empty() instead of size()>0

[flightgear.git] / src / Scripting / NasalModelData.hxx

diff --git a/src/Scripting/NasalModelData.hxx b/src/Scripting/NasalModelData.hxx
index 8c8b13d6e1dd2e52f0996c414a7505aff25314e6..22ae536fe7820e957e759cb3936e58cf65b3b6e5 100644 (file)
--- a/src/Scripting/NasalModelData.hxx
+++ b/src/Scripting/NasalModelData.hxx
@@ -89,6 +89,8 @@ public:
                       SGPropertyNode *prop,
                       osg::Node *branch );
     
+    virtual FGNasalModelDataProxy* clone() const { return new FGNasalModelDataProxy(_root); }
+
 protected:
     SGPropertyNode_ptr _root;
     FGNasalModelDataRef _data;