+#ifndef ALIGENPARAM_H
+#define ALIGENPARAM_H
+/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
+ * See cxx source for full Copyright notice */
-#ifndef AliGenParam_H
-#define AliGenParam_H
-#include "AliGenerator.h"
-#include "AliPythia.h"
-#include "TNamed.h"
-#include "TF1.h"
-#include "TArrayF.h"
-#include "TArrayI.h"
-#include "TTree.h"
-#include "TParticle.h"
+/* $Id$ */
+#include "AliGenMC.h"
+#include <TArrayI.h>
+
+class AliPythia;
+class TParticle;
+class AliGenLib;
+class TF1;
+
+typedef enum { kAnalog, kNonAnalog} Weighting_t;
//-------------------------------------------------------------
-class AliGenParam : public AliGenerator
+class AliGenParam : public AliGenMC
{
-protected:
- Double_t (*fPtParaFunc)(Double_t*, Double_t*); //! Pointer to Pt parametrisation function
- Double_t (*fYParaFunc )(Double_t*, Double_t*); //! Pointer to Y parametrisation function
- Int_t (*fIpParaFunc )(); //! Pointer to particle type parametrisation function
- TF1* fPtPara;
- TF1* fYPara;
- Param_t fParam;
- Float_t fdNdy0;
- Float_t fYWgt;
- Float_t fPtWgt;
- Weighting_t fAnalog; //Flaf for anolog or pt-weighted generation
- Float_t fBias;
- Int_t fTrials;
- Decay_t fForceDecay;
- TArrayI fChildSelect;
- AliPythia *fPythia;
- private:
- // check if particle is selected as child
- Bool_t ChildSelected(Int_t ip);
- // all kinematic selection goes here
- Bool_t KinematicSelection(TParticle *particle);
public:
- AliGenParam();
- AliGenParam(Int_t npart, Param_t param);
-// Double_t (*PtPara)(Double_t*, Double_t*),
-// Double_t (*YPara )(Double_t*, Double_t*));
- virtual ~AliGenParam();
- virtual void Generate();
- virtual void Init();
- // select particle type
- virtual void SetParam(Param_t param=jpsi_p) {fParam=param;}
- // force decay type
- virtual void ForceDecay(Decay_t decay=dimuon) {fForceDecay=decay;}
- virtual void SetWeighting(Weighting_t flag=analog) {fAnalog=flag;}
+ AliGenParam();
+ AliGenParam(Int_t npart, AliGenLib * Library, Int_t param, char* tname = 0);
+ AliGenParam(Int_t npart, Int_t param, char* tname = 0);
+ AliGenParam(Int_t npart, Int_t param,
+ Double_t (*PtPara)(Double_t*, Double_t*),
+ Double_t (*YPara )(Double_t*, Double_t*),
+ Int_t (*IpPara)(TRandom*) );
+ AliGenParam(const AliGenParam &Param);
+
+ virtual ~AliGenParam();
+ virtual void Generate();
+ virtual void Init();
+ // select particle type
+ virtual void SetParam(Int_t param) {fParam = param;}
+ // force decay type
+ virtual void SetWeighting(Weighting_t flag = kAnalog) {fAnalog = flag;}
+ virtual void SetDeltaPt(Float_t delta=0.01) {fDeltaPt = delta;}
+
+ AliGenParam & operator=(const AliGenParam & rhs);
+ protected:
+ Double_t (*fPtParaFunc)(Double_t*, Double_t*); //! Pointer to Pt parametrisation function
+ Double_t (*fYParaFunc )(Double_t*, Double_t*); //! Pointer to Y parametrisation function
+ Int_t (*fIpParaFunc )(TRandom*); //! Pointer to particle type parametrisation function
+ TF1* fPtPara; // Transverse momentum parameterisation
+ TF1* fYPara; // Rapidity parameterisation
+ Int_t fParam; // Parameterisation type
+ Float_t fdNdy0; // central multiplicity per event
+ Float_t fYWgt; // Y-weight
+ Float_t fPtWgt; // Pt-weight
+ Float_t fBias; // Biasing factor
+ Int_t fTrials; // Number of trials
+ Float_t fDeltaPt; // pT sampling in steps of fDeltaPt
+ AliDecayer *fDecayer; // ! Pointer to pythia object for decays
ClassDef(AliGenParam,1) // Generator using parameterised pt- and y-distribution
};
#endif