#ifndef AliIsolationCut_H
#define AliIsolationCut_H
/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
 * See cxx source for full Copyright notice     */
/* $Id:  */

/* History of cvs commits:
 *
 * $Log$
 *
 *
 */

//_________________________________________________________________________

// Class containing methods for the isolation cut. 
//
//
// 

// -- Author: Gustavo Conesa (INFN-LNF)

// --- ROOT system --- 
#include <TObject.h>
//#include <TSeqCollection.h>
class TSeqCollection ;

// --- ANALYSIS system ---
//#include <AliAODParticleCorrelation.h>
class AliAODParticleCorrelation ;

class AliIsolationCut : public TObject {
  
 public: 
  
  AliIsolationCut() ; // default ctor
  AliIsolationCut(const AliIsolationCut & g) ; // cpy ctor
  AliIsolationCut & operator = (const AliIsolationCut & g) ;//cpy assignment
  virtual ~AliIsolationCut() {;} //virtual dtalr
  
  enum type {kPtThresIC, kSumPtIC, kPtFracIC, kSumPtFracIC};
  
  Float_t    GetConeSize()          const {return fConeSize ; }
  Float_t    GetPtThreshold()      const {return fPtThreshold ; }
  Float_t    GetPtFraction()      const {return fPtFraction ; }
  Int_t        GetICMethod()          const {return fICMethod ; }
  
  void MakeIsolationCut(TSeqCollection * plCTS, TSeqCollection * plNe, Double_t * vertex, 
			const Bool_t fillAOD, AliAODParticleCorrelation  * pCandidate, 
			const Int_t index1, const Int_t index2, 
			Int_t &n, Int_t & nfrac, Float_t &ptsum, Bool_t & isolated) ;  
  
  void Print(const Option_t * opt)const;
  
  void SetConeSize(Float_t r)              {fConeSize = r ; }
  void SetPtThreshold(Float_t pt)        {fPtThreshold = pt; }
  void SetPtFraction(Float_t pt)        {fPtFraction = pt; }
  void SetICMethod(Int_t i )          {fICMethod = i ; }
  
  void InitParameters();

  
  private:
     
  Float_t      fConeSize ; //Size of the isolation cone 
  Float_t      fPtThreshold ; //Mimium pt of the particles in the cone or sum in cone 
  Float_t      fPtFraction ; //Fraction of the momentum of particles in cone or sum in cone
  Int_t        fICMethod ; //Isolation cut method to be used
                                           // kPtIC: Pt threshold method
                                           // kSumPtIC: Cone pt sum method
                                           // kPtFracIC:   Pt threshold, fraction of candidate pt, method
                                           // kSumPtFracIC:   Cone pt sum , fraction of cone sum, method

  ClassDef(AliIsolationCut,1)
} ;
 

#endif //AliIsolationCut_H