changed: allow subclasses to register additional functions for VTF output

src/SIM/SIMoutput.C

@@ -1889,3 +1889,9 @@ bool SIMoutput::writeAddFuncs (int iStep, int& nBlock, int idBlock, double time)
 
   return true;
 }
+
+
+void SIMoutput::addAddFunc(const std::string& name, RealFunc* f)
+{
+  myAddScalars[name] = f;
+}

src/SIM/SIMoutput.h

@@ -293,10 +293,13 @@ public:
   //! \brief Prints integrated solution norms to the log stream.
   virtual void printNorms(const Vectors&, size_t = 36) const = 0;
 
-protected:
   //! \brief Writes out the additional functions to VTF-file.
   virtual bool writeAddFuncs(int iStep, int& nBlock, int idBlock, double time);
 
+protected:
+  //! \brief Add an additional function for VTF output.
+  void addAddFunc(const std::string& name, RealFunc* f);
+
 private:
   //! \brief Private helper to initialize patch for solution evaluation.
   bool initPatchForEvaluation(int patchNo) const;