TGo4FitDependency.h

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// $Id$
//-----------------------------------------------------------------------
//       The GSI Online Offline Object Oriented (Go4) Project
//         Experiment Data Processing at EE department, GSI
//-----------------------------------------------------------------------
// Copyright (C) 2000- GSI Helmholtzzentrum fuer Schwerionenforschung GmbH
//                     Planckstr. 1, 64291 Darmstadt, Germany
// Contact:            http://go4.gsi.de
//-----------------------------------------------------------------------
// This software can be used under the license agreements as stated
// in Go4License.txt file which is part of the distribution.
//-----------------------------------------------------------------------
 
#ifndef TGO4FITDEPENDENCY_H
#define TGO4FITDEPENDENCY_H
 
#include "TObject.h"
#include "TString.h"
 
class TFormula;

class TGo4FitDependency : public TObject {
   public:
      TGo4FitDependency();
      TGo4FitDependency(const char *iParameter, const char *iExpression);
      TGo4FitDependency(const char *iParameter, Double_t InitValue);
      virtual ~TGo4FitDependency();
 
      void SetParameter(const char *iParameter);
      void SetInitValue(Double_t InitValue);
      void SetExpression(const char *iExpression);
 
      const TString &GetParameter() const { return fxParameter; }
      const TString &GetExpression() const { return fxExpression; }
      Double_t GetInitValue() const { return fdInitValue; }
 
      Bool_t IsResultDepend() const { return fxParameter.IsNull(); }
      Bool_t IsInitValue() const { return fxExpression.IsNull(); }
 
      void Initialize(Int_t iNumPar, const char *iFormula);
      Double_t ExecuteDependency(Double_t *Params);
      void Finalize();
 
      void Print(Option_t *option = "") const override;
 
   protected:
      TString fxParameter;
      TString fxExpression;
      Double_t fdInitValue{0.};
      Int_t fiNumPar{0};                  
      TFormula *fxFormula{nullptr};       
 
   ClassDefOverride(TGo4FitDependency,1)
};
 
#endif // TGO4FITDEPENDENCY_H