Line data    Source code

       1             : #ifndef AliVParticle_H
       2             : #define AliVParticle_H
       3             : /* Copyright(c) 1998-2007, ALICE Experiment at CERN, All rights reserved. *
       4             :  * See cxx source for full Copyright notice                               */
       5             : 
       6             : /* $Id$ */
       7             : 
       8             : //-------------------------------------------------------------------------
       9             : //     base class for ESD and AOD particles
      10             : //     Author: Markus Oldenburg, CERN
      11             : //-------------------------------------------------------------------------
      12             : 
      13             : #include <Rtypes.h>
      14             : #include <TObject.h>
      15             : #include "AliVMisc.h"
      16             : 
      17             : #include <float.h>
      18             : 
      19             : const Double_t kAlmost1=1. - Double_t(FLT_EPSILON);
      20             : const Double_t kAlmost0=Double_t(FLT_MIN);
      21             : 
      22             : const Double_t kB2C=-0.299792458e-3;
      23             : const Double_t kAlmost0Field=1.e-13;
      24             : 
      25             : class AliVParticle: public TObject {
      26             : 
      27             : public:
      28       86262 :   AliVParticle() { }
      29      107220 :   virtual ~AliVParticle() { }
      30             :   AliVParticle(const AliVParticle& vPart); 
      31             :   AliVParticle& operator=(const AliVParticle& vPart);
      32             : 
      33             :   // constructor for reinitialisation of vtable
      34           0 :   AliVParticle( AliVConstructorReinitialisationFlag ) :TObject(){}
      35             : 
      36             :   // kinematics
      37             :   virtual Double_t Px() const = 0;
      38             :   virtual Double_t Py() const = 0;
      39             :   virtual Double_t Pz() const = 0;
      40             :   virtual Double_t Pt() const = 0;
      41             :   virtual Double_t P()  const = 0;
      42             :   virtual Bool_t   PxPyPz(Double_t p[3]) const = 0;
      43             : 
      44             :   virtual Double_t Xv() const = 0;
      45             :   virtual Double_t Yv() const = 0;
      46             :   virtual Double_t Zv() const = 0;
      47             :   virtual Bool_t   XvYvZv(Double_t x[3]) const = 0;  
      48             : 
      49             :   virtual Double_t OneOverPt()  const = 0;
      50             :   virtual Double_t Phi()        const = 0;
      51             :   virtual Double_t Theta()      const = 0;
      52             : 
      53             : 
      54             :   virtual Double_t E()          const = 0;
      55             :   virtual Double_t M()          const = 0;
      56             :   
      57             :   virtual Double_t Eta()        const = 0;
      58             :   virtual Double_t Y()          const = 0;
      59             :   
      60             :   virtual Short_t Charge()      const = 0;
      61             :   virtual Int_t   GetLabel()    const = 0;
      62             :   // PID
      63             :   virtual Int_t   PdgCode()     const = 0;       
      64             :   virtual const Double_t *PID() const = 0; // return PID object (to be defined, still)
      65             : 
      66             : 
      67             :   
      68             :   /** Compare this class with an other instance of this class
      69             :    *  used in a TCollection::Sort()/TClonesArray::Sort()
      70             :    *  @param   obj  ptr to other instance
      71             :    *  @return  Returns 0 when equal, 1 when this is smaller
      72             :    *  and -1 when bigger -- sorts descending
      73             :    */
      74             :   Int_t Compare( const TObject* obj) const;
      75             :   
      76             :     
      77             :   /** Defines this class as being sortable in a TCollection
      78             :    *  @return     always kTRUE;
      79             :    */
      80           0 :   Bool_t IsSortable() const  { return kTRUE; }
      81           0 :   virtual Bool_t IsPrimary()  const  { return kFALSE; }
      82           0 :   virtual void    SetFlag(UInt_t) {;}
      83           0 :   virtual UInt_t  GetFlag() const {return 0;}  
      84             : 
      85             :   // coordinate system conversions
      86             :   Bool_t   Local2GlobalMomentum(Double_t p[3], Double_t alpha) const;
      87             :   Bool_t   Local2GlobalPosition(Double_t r[3], Double_t alpha) const;
      88             :   Bool_t   Global2LocalMomentum(Double_t p[3], Short_t charge, Double_t &alpha) const;
      89             :   Bool_t   Global2LocalPosition(Double_t r[3], Double_t alpha) const;
      90             : 
      91             :   //Navigation
      92           0 :   virtual Int_t   GetMother()   const {return -1;}
      93           0 :   virtual Int_t   GetFirstDaughter()   const {return -1;}
      94           0 :   virtual Int_t   GetLastDaughter()    const {return -1;}
      95           0 :   virtual void    SetGeneratorIndex(Short_t) {;}
      96           0 :   virtual Short_t GetGeneratorIndex() const {return -1;}
      97         338 :   ClassDef(AliVParticle, 3)  // base class for particles
      98             : };
      99             : 
     100             : #endif