1 #ifndef ALIDIELECTRONTRACKROTATOR_H
2 #define ALIDIELECTRONTRACKROTATOR_H
4 /* Copyright(c) 1998-2009, ALICE Experiment at CERN, All rights reserved. *
5 * See cxx source for full Copyright notice */
7 //#############################################################
9 //# Class AliDielectronTrackRotator #
12 //# Anton Andronic, GSI / A.Andronic@gsi.de #
13 //# Ionut C. Arsene, GSI / I.C.Arsene@gsi.de #
14 //# Julian Book, Uni Ffm / Julian.Book@cern.ch #
15 //# Frederick Kramer, Uni Ffm, / Frederick.Kramer@cern.ch #
16 //# Magnus Mager, CERN / Magnus.Mager@cern.ch #
17 //# WooJin J. Park, GSI / W.J.Park@gsi.de #
18 //# Jens Wiechula, Uni HD / Jens.Wiechula@cern.ch #
20 //#############################################################
24 #include <AliKFParticle.h>
30 class AliDielectronTrackRotator : public TNamed {
32 enum ERotationType {kRotatePositive, kRotateNegative, kRotateBothRandom};
34 AliDielectronTrackRotator();
35 AliDielectronTrackRotator(const char*name, const char* title);
37 virtual ~AliDielectronTrackRotator();
39 void SetTrackArrays(const TObjArray * const arrP, const TObjArray * const arrN) {fkArrTracksP=arrP;fkArrTracksN=arrN;}
41 Bool_t NextCombination();
44 void SetIterations(UInt_t niter) { fIterations=niter; }
45 void SetRotationType(ERotationType type) { fRotationType=type; }
46 void SetStartAnglePhi(Double_t phi) { fStartAnglePhi=phi; }
47 void SetConeAnglePhi(Double_t phi) { fConeAnglePhi=phi; }
50 Int_t GetIterations() const { return fIterations; }
51 ERotationType GetRotationType() const { return fRotationType; }
52 Double_t GetStartAnglePhi() const { return fStartAnglePhi; }
53 Double_t GetConeAnglePhi() const { return fConeAnglePhi; }
55 void SetEvent(AliVEvent * const ev) { fEvent = ev; }
56 void SetPdgLegs(Int_t pdfLeg1, Int_t pdfLeg2) { fPdgLeg1=pdfLeg1; fPdgLeg2=pdfLeg2; }
58 const AliKFParticle& GetKFTrackP() const {return fTrackP;}
59 const AliKFParticle& GetKFTrackN() const {return fTrackN;}
61 AliVTrack* GetVTrackP() const {return fVTrackP;}
62 AliVTrack* GetVTrackN() const {return fVTrackN;}
65 UInt_t fIterations; // number of iterations
67 ERotationType fRotationType; // which track to rotate
69 Double_t fStartAnglePhi; // starting angle for rotation
70 Double_t fConeAnglePhi; // opening angle in phi for multiple rotation
72 const TObjArray *fkArrTracksP; //! array of positive tracks
73 const TObjArray *fkArrTracksN; //! array of negative tracks
75 UInt_t fCurrentIteration; //! current iteration step
76 Int_t fCurrentTackP; //! current positive track in array
77 Int_t fCurrentTackN; //! current negative track in array
79 AliVEvent *fEvent; //! current event
81 AliKFParticle fTrackP; //! Positive track
82 AliKFParticle fTrackN; //! Negative track
84 AliVTrack *fVTrackP; //! Positive track
85 AliVTrack *fVTrackN; //! Negative track
87 Int_t fPdgLeg1; //! pdg code leg1
88 Int_t fPdgLeg2; //! pdg code leg2
91 Bool_t RotateTracks();
93 AliDielectronTrackRotator(const AliDielectronTrackRotator &c);
94 AliDielectronTrackRotator &operator=(const AliDielectronTrackRotator &c);
97 ClassDef(AliDielectronTrackRotator,1) // Dielectron TrackRotator