QA Data maker for RAW
[u/mrichter/AliRoot.git] / MUON / AliMUONClusterFinderMLEM.h
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c0a16418 1#ifndef ALIMUONCLUSTERFINDERMLEM_H
2#define ALIMUONCLUSTERFINDERMLEM_H
3/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * See cxx source for full Copyright notice */
5
6/* $Id$ */
7
8/// \ingroup rec
9/// \class AliMUONClusterFinderMLEM
10/// \brief Cluster finder in MUON arm of ALICE
11///
12// Author Alexander Zinchenko, JINR Dubna; Laurent Aphecetche, SUBATECH
13//
14
15class TH2D;
16class TClonesArray;
17class TMinuit;
c0a16418 18
19#ifndef ROOT_TObjArray
20# include "TObjArray.h"
21#endif
22#ifndef ROOT_TVector2
23# include "TVector2.h"
24#endif
25
26class AliMUONPad;
27
28#include "AliMUONVClusterFinder.h"
29
30class AliMUONClusterSplitterMLEM;
31
32class AliMUONClusterFinderMLEM : public AliMUONVClusterFinder
33{
34public:
b1a19e07 35 AliMUONClusterFinderMLEM(Bool_t plot, AliMUONVClusterFinder* clusterFinder); // Constructor
c0a16418 36 virtual ~AliMUONClusterFinderMLEM(); // Destructor
37
24935e58 38 virtual Bool_t NeedSegmentation() const { return kTRUE; }
39
40 using AliMUONVClusterFinder::Prepare;
41
42 virtual Bool_t Prepare(Int_t detElemId,
43 TClonesArray* pads[2],
44 const AliMpArea& area,
45 const AliMpVSegmentation* segmentations[2]);
c0a16418 46
47 virtual AliMUONCluster* NextCluster();
48
49 virtual void Print(Option_t* opt="") const;
50
51 virtual void Paint(Option_t* opt="");
52
8c718ff8 53 // Status flags for pads
05542040 54
55 /// Return pad "basic" state flag
56 static Int_t GetZeroFlag() { return fgkZero; }
57 /// Return do not kill flag
58 static Int_t GetMustKeepFlag() { return fgkMustKeep; }
59 /// Return should be used for fit flag
60 static Int_t GetUseForFitFlag() { return fgkUseForFit; }
61 /// Return processing is over flag
62 static Int_t GetOverFlag() { return fgkOver; }
63 /// Return modified pad charge flag
64 static Int_t GetModifiedFlag() { return fgkModified; }
65 /// Return coupled pad flag
66 static Int_t GetCoupledFlag() { return fgkCoupled; }
8c718ff8 67
c0a16418 68private:
71a2d3aa 69 /// Not implemented
c0a16418 70 AliMUONClusterFinderMLEM(const AliMUONClusterFinderMLEM& rhs);
71a2d3aa 71 /// Not implemented
c0a16418 72 AliMUONClusterFinderMLEM& operator=(const AliMUONClusterFinderMLEM& rhs);
73
74 Bool_t WorkOnPreCluster();
75
76 /// Check precluster to simplify it (if possible), and return the simplified cluster
77 AliMUONCluster* CheckPrecluster(const AliMUONCluster& cluster);
78 AliMUONCluster* CheckPreclusterTwoCathodes(AliMUONCluster* cluster);
c0a16418 79
80 /// Checks whether a pad and a pixel have an overlapping area.
81 Bool_t Overlap(const AliMUONPad& pad, const AliMUONPad& pixel);
82
83 /// build array of pixels
84 void BuildPixArray(AliMUONCluster& cluster);
85 void BuildPixArrayOneCathode(AliMUONCluster& cluster);
2abdae6e 86 void PadOverHist(Int_t idir, Int_t ix0, Int_t iy0, AliMUONPad *pad);
c0a16418 87
88 void RemovePixel(Int_t i);
89
90 AliMUONPad* Pixel(Int_t i) const;
91
c0a16418 92 Bool_t MainLoop(AliMUONCluster& cluster, Int_t iSimple); // repeat MLEM algorithm until pixels become sufficiently small
93
94 void Mlem(AliMUONCluster& cluster, Double_t *coef, Double_t *probi, Int_t nIter); // use MLEM for cluster finding
95
96 void FindCOG(TH2D *mlem, Double_t *xyc); // find COG position around maximum bin
97 Int_t FindNearest(AliMUONPad *pixPtr0); // find nearest neighbouring pixel to the given one
98
99 Int_t FindLocalMaxima(TObjArray *pixArray, Int_t *localMax, Double_t *maxVal); // find local maxima
100 void FlagLocalMax(TH2D *hist, Int_t i, Int_t j, Int_t *isLocalMax); // flag local max
101 void FindCluster(AliMUONCluster& cluster, Int_t *localMax, Int_t iMax); // find cluster around local max
102 void AddVirtualPad(AliMUONCluster& cluster); // add virtual pads for some clusters (if necessary)
103
104 void PadsInXandY(AliMUONCluster& cluster, Int_t &nInX, Int_t &nInY) const; // get number of pads in X and Y
105
106 /// Process simple cluster
107 void Simple(AliMUONCluster& cluster);
108
c0a16418 109 void Plot(const char* outputfile);
110
111 void ComputeCoefficients(AliMUONCluster& cluster,
112 Double_t* coef, Double_t* probi);
113
114 void CheckOverlaps();
2abdae6e 115 void AddBinSimple(TH2D *mlem, Int_t ic, Int_t jc);
8c718ff8 116 void MaskPeaks(Int_t mask);
2abdae6e 117
c0a16418 118private:
05542040 119 // Status flags for pads
120 static const Int_t fgkZero; ///< pad "basic" state
121 static const Int_t fgkMustKeep; ///< do not kill (for pixels)
122 static const Int_t fgkUseForFit; ///< should be used for fit
123 static const Int_t fgkOver; ///< processing is over
124 static const Int_t fgkModified; ///< modified pad charge
125 static const Int_t fgkCoupled; ///< coupled pad
126
c0a16418 127 // Some constants
c0a16418 128 static const Double_t fgkZeroSuppression; ///< average zero suppression value
c0a16418 129 static const Double_t fgkDistancePrecision; ///< used to check overlaps and so on
130 static const TVector2 fgkIncreaseSize; ///< idem
131 static const TVector2 fgkDecreaseSize; ///< idem
132
71a2d3aa 133 AliMUONVClusterFinder* fPreClusterFinder; //!< the pre-clustering worker
134 AliMUONCluster* fPreCluster; //!< current pre-cluster
135 TObjArray fClusterList; //!< clusters corresponding to the current pre-cluster
c0a16418 136
71a2d3aa 137 Int_t fEventNumber; //!< current event being processed
138 Int_t fDetElemId; //!< current DE being processed
139 Int_t fClusterNumber; //!< current cluster number
c0a16418 140
141 const AliMpVSegmentation *fSegmentation[2]; //!< new segmentation
142
c0a16418 143 Int_t fCathBeg; //!< starting cathode (for combined cluster / track reco)
144 Int_t fPadBeg[2]; //!< starting pads (for combined cluster / track reco)
145
146 static TMinuit* fgMinuit; //!< Fitter
147
148 TObjArray* fPixArray; //!< collection of pixels
149 Int_t fDebug; //!< debug level
150 Bool_t fPlot; //!< whether we should plot thing (for debug only, quite slow!)
151
c0a16418 152 AliMUONClusterSplitterMLEM* fSplitter; //!< helper class to go from pixel arrays to clusters
153 Int_t fNClusters; //!< total number of clusters
154 Int_t fNAddVirtualPads; //!< number of clusters for which we added virtual pads
155
156 ClassDef(AliMUONClusterFinderMLEM,0) // cluster finder in MUON arm of ALICE
157};
158
159#endif