Patch problem with destructor

[u/mrichter/AliRoot.git] / EVGEN / 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 "AliDecayer.h"
#include <TArrayI.h>

class AliPythia;
class TParticle;
class AliGenLib;
class TF1;

typedef enum { kAnalog, kNonAnalog} Weighting_t;
//-------------------------------------------------------------
class AliGenParam : public AliGenerator
{
 public:
    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 SetForceDecay(Decay_t decay = kDiMuon) {fForceDecay = decay;}
    virtual void SetWeighting(Weighting_t flag = kAnalog) {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;}
    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
    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
    Float_t     fDeltaPt;      // pT sampling in steps of fDeltaPt
    TArrayI     fChildSelect;  // Children to be selected from decay products
    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);

  ClassDef(AliGenParam,1) // Generator using parameterised pt- and y-distribution
};
#endif