GParticle.h

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// $ID:  GParticle.h,v 1.2 1998/09/01 16:25 gmieg Exp $
//
// GParticle.h
//
// ROOT Particle table
// Taken from Alice Experiment
//
// Author:  G. Irwin 9/98

#ifndef ROOT_GParticle
#define ROOT_GParticle

#include <string.h>

#include "TMath.h"
#include "TObject.h"

const Int_t Keep_Bit      = 1;
const Int_t Children_Bit  = 2;
const Int_t Done_Bit      = 4;

class GParticle : public TObject {

private:

   Int_t    fKS;            // status of particle (LUJETS K[1])
   Int_t    fKF;            // PDG particle type
   Int_t    fParent;        // parent id 
   Int_t    fFirstChild;    // id of first child 
   Int_t    fLastChild;     // id of last  child 

   Float_t  fPx;            // X momentum [GeV/c]
   Float_t  fPy;            // Y momentum [GeV/c]
   Float_t  fPz;            // Z momentum [GeV/c]
   Float_t  fEnergy;        // Energy    [GeV]
   Float_t  fMass;          // Mass      [Gev/c^2]

   Float_t  fVx;            // X vertex  [cm]
   Float_t  fVy;            // Y vertex  [cm]
   Float_t  fVz;            // Z vertex  [cm]

   Float_t  fPolx;          // X component of polarisation 
   Float_t  fPoly;          // Y component of polarisation 
   Float_t  fPolz;          // Z component of polarisation 

   Float_t  fTime;          // time of production
   Float_t  fLifeTime;      // proper lifetime
   Float_t  fProcessTime;   // Cpu Time to process this track

   char     fOrigin[11];    // generation mechanism

public:
   GParticle();

   GParticle(const Int_t kS, const Int_t kF, const Int_t parent,
             const Int_t firstchild, const Int_t lastchild,
             const Float_t px, const Float_t py, const Float_t pz,
             const Float_t energy, const Float_t mass,
             const Float_t vx, const Float_t vy, const Float_t vz, 
             const Float_t polx, const Float_t poly, const Float_t polz,
             const Float_t time, const Float_t lifetime,
             const char *Origin="Unknown");

   virtual ~GParticle();

   inline Int_t     GetKS()          const {return fKS;}
   inline Int_t     GetKF()          const {return fKF;}
   inline Int_t     GetParent()      const {return fParent;}
   inline Int_t     GetFirstChild()  const {return fFirstChild;}
   inline Int_t     GetLastChild()   const {return fLastChild;}

   inline Float_t   GetPx()          const {return fPx;}
   inline Float_t   GetPy()          const {return fPy;}
   inline Float_t   GetPz()          const {return fPz;}

   inline Float_t   GetPolx()        const {return fPolx;}
   inline Float_t   GetPoly()        const {return fPoly;}
   inline Float_t   GetPolz()        const {return fPolz;}

   inline Float_t   GetEnergy()      const {return fEnergy;}
   inline Float_t   GetMass()        const {return fMass;}
   inline Float_t   GetMomentum()    const {return
                                  TMath::Sqrt(fPx*fPx+fPy*fPy+fPz*fPz);}
   inline void      GetOrigin(char *Origin) {strcpy(Origin,fOrigin);}
   inline Float_t   GetPT() const {return TMath::Sqrt(fPx*fPx+fPy*fPy);}

   inline Float_t   GetVx()          const {return fVx;}
   inline Float_t   GetVy()          const {return fVy;}
   inline Float_t   GetVz()          const {return fVz;}
   inline Float_t   GetTime()        const {return fTime;}
   inline Float_t   GetLifeTime()    const {return fLifeTime;}
   inline Float_t   GetProcessTime() const {return fProcessTime;}
   virtual const Text_t *GetName()   const;
   virtual const Text_t *GetTitle()  const;

   inline void      SetKS(Int_t KS)  {fKS=KS;}
   inline void      SetFirstChild(const Int_t firstchild)
                                               {fFirstChild=firstchild;}
   inline void      SetLastChild(const Int_t lastchild)
                                                 {fLastChild=lastchild;}
   inline void      SetParent(const Int_t parent)      {fParent=parent;}
   inline void      SetProcessTime(Float_t cputime)
                                                 {fProcessTime=cputime;}

ClassDef(GParticle,1)                    // LUJETS particles data record
};

#endif                                                 // ROOT_GParticle

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