// @(#)root/minuit2:$Id$
// Authors: M. Winkler, F. James, L. Moneta, A. Zsenei   2003-2005

/**********************************************************************
 *                                                                    *
 * Copyright (c) 2005 LCG ROOT Math team,  CERN/PH-SFT                *
 *                                                                    *
 **********************************************************************/

#ifndef ROOT_Minuit2_MnFumiliMinimize
#define ROOT_Minuit2_MnFumiliMinimize

#include "Minuit2/MnApplication.h"
#include "Minuit2/FumiliMinimizer.h"
#include "Minuit2/FumiliFCNBase.h"

namespace ROOT {

   namespace Minuit2 {


// class FumiliFCNBase;
// class FCNBase;


//___________________________________________________________________________
/**


API class for minimization using Fumili technology;
allows for user interaction: set/change parameters, do minimization,
change parameters, re-do minimization etc.;
also used by MnMinos and MnContours;


 */

class MnFumiliMinimize : public MnApplication {

public:

   /// construct from FumiliFCNBase + std::vector for parameters and errors
   MnFumiliMinimize(const FumiliFCNBase& fcn, const std::vector<double>& par, const std::vector<double>& err, unsigned int stra = 1) : MnApplication(fcn, MnUserParameterState(par,err), MnStrategy(stra)), fMinimizer(FumiliMinimizer()), fFCN(fcn) {}

   /// construct from FumiliFCNBase + std::vector for parameters and covariance
   MnFumiliMinimize(const FumiliFCNBase& fcn, const std::vector<double>& par, unsigned int nrow, const std::vector<double>& cov,  unsigned int stra = 1) : MnApplication(fcn, MnUserParameterState(par, cov, nrow), MnStrategy(stra)), fMinimizer(FumiliMinimizer()), fFCN(fcn) {}

   /// construct from FumiliFCNBase + std::vector for parameters and MnUserCovariance
   MnFumiliMinimize(const FumiliFCNBase& fcn, const std::vector<double>& par, const MnUserCovariance& cov, unsigned int stra = 1) : MnApplication(fcn, MnUserParameterState(par, cov), MnStrategy(stra)), fMinimizer(FumiliMinimizer()), fFCN(fcn) {}

   /// construct from FumiliFCNBase + MnUserParameters
   MnFumiliMinimize(const FumiliFCNBase& fcn, const MnUserParameters& par, unsigned int stra = 1) : MnApplication(fcn, MnUserParameterState(par), MnStrategy(stra)), fMinimizer(FumiliMinimizer()), fFCN(fcn) {}

   /// construct from FumiliFCNBase + MnUserParameters + MnUserCovariance
   MnFumiliMinimize(const FumiliFCNBase& fcn, const MnUserParameters& par, const MnUserCovariance& cov, unsigned int stra = 1) : MnApplication(fcn, MnUserParameterState(par, cov), MnStrategy(stra)), fMinimizer(FumiliMinimizer()), fFCN(fcn) {}

   /// construct from FumiliFCNBase + MnUserParameterState + MnStrategy
   MnFumiliMinimize(const FumiliFCNBase& fcn, const MnUserParameterState& par, const MnStrategy& str) : MnApplication(fcn, MnUserParameterState(par), str), fMinimizer(FumiliMinimizer()), fFCN(fcn) {}

   MnFumiliMinimize(const MnFumiliMinimize& migr) : MnApplication(migr.Fcnbase(), migr.State(), migr.Strategy(), migr.NumOfCalls()), fMinimizer(migr.fMinimizer), fFCN(migr.Fcnbase()) {}

   virtual ~MnFumiliMinimize() { }

   FumiliMinimizer& Minimizer() {return fMinimizer;}
   const FumiliMinimizer& Minimizer() const {return fMinimizer;}

   const FumiliFCNBase & Fcnbase() const { return fFCN; }


   /// overwrite Minimize to use FumiliFCNBase
   virtual FunctionMinimum operator()(unsigned int = 0, double = 0.1);


private:

   FumiliMinimizer fMinimizer;
   const FumiliFCNBase & fFCN;

private:

   //forbidden assignment of migrad (const FumiliFCNBase& = )
   MnFumiliMinimize& operator=(const MnFumiliMinimize&) {return *this;}
};

  }  // namespace Minuit2

}  // namespace ROOT

#endif  // ROOT_Minuit2_MnFumiliMinimize
