- Welding section on absorber side (LHCVC2C_001)
[u/mrichter/AliRoot.git] / MUON / AliMUONClusterFinderAZ.h
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0df3ca52 1#ifndef ALIMUONCLUSTERFINDERAZ_H
2#define ALIMUONCLUSTERFINDERAZ_H
3/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * See cxx source for full Copyright notice */
5
6#include <TROOT.h>
7class TH2F;
8class TH2D;
9class TClonesArray;
10class AliSegmentation;
11class AliMUONResponse;
12class TMinuit;
13class TMatrixD;
14class AliMUONPixel;
15#include "AliMUONClusterFinderVS.h"
16
0df3ca52 17//class AliMUONClusterFinderAZ : public TObject {
18class AliMUONClusterFinderAZ : public AliMUONClusterFinderVS {
19
20 public:
21
22 AliMUONClusterFinderAZ(Bool_t draw, Int_t iReco);// Constructor
23 virtual ~AliMUONClusterFinderAZ(); // Destructor
24
9e993f2a 25 void FindRawClusters(); // the same interface as for old cluster finder
26 void EventLoop(Int_t nev, Int_t ch); // first event
27 Bool_t TestTrack(Int_t t); // test if track was selected
9e993f2a 28
29protected:
74f7bbc5 30 AliMUONClusterFinderAZ(const AliMUONClusterFinderAZ& rhs);
31 AliMUONClusterFinderAZ& operator=(const AliMUONClusterFinderAZ& rhs);
0df3ca52 32
33 private:
343146bf 34 // Some constants
35 static const Int_t fgkDim = 2000; // array size
36 static const Double_t fgkCouplMin; // threshold on coupling
37
74f7bbc5 38 static AliMUONClusterFinderAZ* fgClusterFinder; // the ClusterFinderAZ instance
9e993f2a 39
40 Int_t fnPads[2]; // ! number of pads in the cluster on 2 cathodes
343146bf 41 Float_t fXyq[6][fgkDim]; // ! pad information
42 Int_t fPadIJ[2][fgkDim]; // ! pad information
9e993f2a 43 AliSegmentation *fSegmentation[2]; // ! segmentation
44 AliMUONResponse *fResponse;// ! response
45 Float_t fZpad; // ! z-coordinate of the hit
46 Int_t fNpar; // ! number of fit parameters
47 Double_t fQtot; // ! total cluster charge
48 Int_t fReco; // ! =1 if run reco with writing to TreeR
49
50 static TMinuit* fgMinuit; // ! Fitter
343146bf 51 Bool_t fUsed[2][fgkDim]; // ! flags for used pads
9e993f2a 52 TH2F* fHist[4]; // ! histograms
0df3ca52 53 TClonesArray *fMuonDigits; // ! pointer to digits
9e993f2a 54 Bool_t fDraw; // ! draw flag
55 Int_t fnMu; // number of muons passing thru the selected area
56 Double_t fxyMu[2][7]; // ! muon information
57 TObjArray* fPixArray; // collection of pixels
0df3ca52 58
59 // Functions
60
9e993f2a 61 void ModifyHistos(void); // modify histograms
62 void AddPad(Int_t cath, Int_t digit); // add a pad to the cluster
0df3ca52 63 Bool_t Overlap(Int_t cath, TObject *dig); // check if the pad from one cathode overlaps with a pad in the cluster on the other cathode
64 Bool_t Overlap(Float_t *xy1, Int_t iPad, Float_t *xy12, Int_t iSkip); // check if pads xy1 and iPad overlap and return overlap area
65 Bool_t CheckPrecluster(Int_t *nShown); // check precluster to simplify it (if possible)
9e993f2a 66 void BuildPixArray(); // build array of pixels
67 void AjustPixel(Float_t width, Int_t ixy); // ajust size of small pixels
68 void AjustPixel(Float_t wxmin, Float_t wymin); // ajust size of large pixels
0df3ca52 69 Bool_t MainLoop(); // repeat MLEM algorithm until pixels become sufficiently small
9e993f2a 70 void Mlem(Double_t *coef, Double_t *probi); // use MLEM for cluster finding
71 void FindCOG(TH2D *mlem, Double_t *xyc); // find COG position around maximum bin
72 Int_t FindNearest(AliMUONPixel *pixPtr0); // find nearest neighbouring pixel to the given one
73 void Split(TH2D *mlem, Double_t *coef); // steering function for pixels
74 void AddBin(TH2D *mlem, Int_t ic, Int_t jc, Int_t mode, Bool_t* used, TObjArray *pix); // add a bin to the cluster
0df3ca52 75 TObject* BinToPix(TH2D *mlem, Int_t jc, Int_t ic); // hist. bin-to-pixel
9e993f2a 76 void AddCluster(Int_t ic, Int_t nclust, TMatrixD *aijcluclu, Bool_t *used, Int_t *clustNumb, Int_t &nCoupled); // add a cluster to the group of coupled clusters
c1aed84f 77 Double_t MinGroupCoupl(Int_t nCoupled, Int_t *clustNumb, TMatrixD *aijcluclu, Int_t *minGroup); // find group of cluster with min. coupling to others
9e993f2a 78 Int_t SelectPad(Int_t nCoupled, Int_t nForFit, Int_t *clustNumb, Int_t *clustFit, TMatrixD *aijcluclu); //select pads for fit
79 void Merge(Int_t nForFit, Int_t nCoupled, Int_t *clustNumb, Int_t *clustFit, TObjArray **clusters, TMatrixD *aijcluclu, TMatrixD *aijclupad); // merge clusters
80 Int_t Fit(Int_t nfit, Int_t *clustFit, TObjArray **clusters, Double_t *parOk); // do the fitting
81 void UpdatePads(Int_t nfit, Double_t *par); // subtract fitted charges from pads
82 void AddRawCluster(Double_t x, Double_t y, Double_t fmin); // add new raw cluster
0df3ca52 83 Int_t FindLocalMaxima(Int_t *localMax, Double_t *maxVal); // find local maxima
9e993f2a 84 void FlagLocalMax(TH2D *hist, Int_t i, Int_t j, Int_t *isLocalMax); // flag local max
85 void FindCluster(Int_t *localMax, Int_t iMax); // find cluster around local max
86 // This function is used for fitting
87 void fcn1(Int_t &npar, Double_t *gin, Double_t &f, Double_t *par, Int_t iflag);
0df3ca52 88
89 ClassDef(AliMUONClusterFinderAZ,0) // cluster finder in MUON arm of ALICE
74f7bbc5 90};
91
0df3ca52 92#endif