-#ifndef AliGenParam_H
-#define AliGenParam_H
+#ifndef ALIGENPARAM_H
+#define ALIGENPARAM_H
/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
* See cxx source for full Copyright notice */
/* $Id$ */
-#include "AliGenerator.h"
-#include "AliPythia.h"
-#include "TNamed.h"
-#include "TF1.h"
-#include "TArrayF.h"
-#include "TArrayI.h"
-#include "TTree.h"
-#include "TParticle.h"
+//
+// Class to generate particles from using parametrized pT and y distributions.
+// Distributions are obtained from pointer to object of type AliGenLib.
+// (For example AliGenMUONlib)
+//
+// andreas.morsch@cern.ch
+//
+#include "AliGenMC.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; // Parameterisation type
+ public:
+ AliGenParam();
+ AliGenParam(Int_t npart, AliGenLib * Library, Int_t param, const char* tname = 0);
+ AliGenParam(Int_t npart, Int_t param, const char* tname = 0, const char* name = 0);
+ AliGenParam(Int_t npart, Int_t param,
+ Double_t (*PtPara)(const Double_t*, const Double_t*),
+ Double_t (*YPara )(const Double_t*, const Double_t*),
+ Int_t (*IpPara)(TRandom*) );
+
+ 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;}
+ virtual void SetDecayer(AliDecayer* decayer) {fDecayer = decayer;}
+ virtual void Draw(const char * opt);
+ TF1 * GetPt() { return fPtPara;}
+ TF1 * GetY() {return fYPara;}
+ Float_t GetRelativeArea(Float_t ptMin, Float_t ptMax, Float_t yMin, Float_t yMax, Float_t phiMin, Float_t phiMax);
+
+ protected:
+ Double_t (*fPtParaFunc)(const Double_t*, const Double_t*); //! Pointer to Pt parametrisation function
+ Double_t (*fYParaFunc )(const Double_t*, const 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
- Weighting_t fAnalog; // Flag for anolog or pt-weighted generation
Float_t fBias; // Biasing factor
Int_t fTrials; // Number of trials
- Decay_t fForceDecay; // Decay channel forced
- Int_t fCutOnChild; // Cuts on decay products (children) are enabled/disabled
- Float_t fChildPtMin; // Children minimum pT
- Float_t fChildPtMax; // Children maximum pT
- Float_t fChildPMin; // Children minimum p
- Float_t fChildPMax; // Children maximum p
- Float_t fChildPhiMin; // Children minimum phi
- Float_t fChildPhiMax; // Children maximum phi
- Float_t fChildThetaMin;// Children minimum theta
- Float_t fChildThetaMax;// Children maximum theta
- TArrayI fChildSelect;
- AliPythia *fPythia;
+ Float_t fDeltaPt; // pT sampling in steps of fDeltaPt
+ AliDecayer *fDecayer; // ! Pointer to pythia object for decays
+
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);
- AliGenParam(Int_t npart, Param_t param,
- Double_t (*PtPara)(Double_t*, Double_t*),
- Double_t (*YPara )(Double_t*, Double_t*),
- Int_t (*IpPara)() );
- 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 SetForceDecay(Decay_t decay=dimuon) {fForceDecay=decay;}
- virtual void SetWeighting(Weighting_t flag=analog) {fAnalog=flag;}
- virtual void SetCutOnChild(Int_t flag=0) {fCutOnChild=flag;}
- virtual void SetChildMomentumRange(Float_t pmin=0, Float_t pmax=1.e10)
- {fChildPMin = pmin; fChildPMax = pmax;}
- virtual void SetChildPtRange(Float_t ptmin=0, Float_t ptmax=20.)
- {fChildPtMin = ptmin; fChildPtMax = ptmax;}
- virtual void SetChildPhiRange(Float_t phimin=-180., Float_t phimax=180)
- {fChildPhiMin = TMath::Pi()*phimin/180;
- fChildPhiMax = TMath::Pi()*phimax/180;}
- virtual void SetChildThetaRange(Float_t thetamin=0, Float_t thetamax=180)
- {fChildThetaMin = TMath::Pi()*thetamin/180;
- fChildThetaMax = TMath::Pi()*thetamax/180;}
- ClassDef(AliGenParam,1) // Generator using parameterised pt- and y-distribution
+ AliGenParam(const AliGenParam &Param);
+ AliGenParam & operator=(const AliGenParam & rhs);
+
+ ClassDef(AliGenParam,1) // Generator using parameterised pt- and y-distribution
};
#endif
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