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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 | ||
15 | class TH2D; | |
16 | class TClonesArray; | |
17 | class TMinuit; | |
c0a16418 | 18 | |
19 | #ifndef ROOT_TObjArray | |
20 | # include "TObjArray.h" | |
21 | #endif | |
22 | #ifndef ROOT_TVector2 | |
23 | # include "TVector2.h" | |
24 | #endif | |
25 | ||
26 | class AliMUONPad; | |
27 | ||
28 | #include "AliMUONVClusterFinder.h" | |
29 | ||
30 | class AliMUONClusterSplitterMLEM; | |
31 | ||
32 | class AliMUONClusterFinderMLEM : public AliMUONVClusterFinder | |
33 | { | |
34 | public: | |
b1a19e07 | 35 | AliMUONClusterFinderMLEM(Bool_t plot, AliMUONVClusterFinder* clusterFinder); // Constructor |
c0a16418 | 36 | virtual ~AliMUONClusterFinderMLEM(); // Destructor |
37 | ||
38 | virtual Bool_t Prepare(const AliMpVSegmentation* segmentations[2], | |
3887d11e | 39 | const AliMUONVDigitStore& digitStore); |
c0a16418 | 40 | |
41 | virtual AliMUONCluster* NextCluster(); | |
42 | ||
43 | virtual void Print(Option_t* opt="") const; | |
44 | ||
45 | virtual void Paint(Option_t* opt=""); | |
46 | ||
8c718ff8 | 47 | // Status flags for pads |
05542040 | 48 | |
49 | /// Return pad "basic" state flag | |
50 | static Int_t GetZeroFlag() { return fgkZero; } | |
51 | /// Return do not kill flag | |
52 | static Int_t GetMustKeepFlag() { return fgkMustKeep; } | |
53 | /// Return should be used for fit flag | |
54 | static Int_t GetUseForFitFlag() { return fgkUseForFit; } | |
55 | /// Return processing is over flag | |
56 | static Int_t GetOverFlag() { return fgkOver; } | |
57 | /// Return modified pad charge flag | |
58 | static Int_t GetModifiedFlag() { return fgkModified; } | |
59 | /// Return coupled pad flag | |
60 | static Int_t GetCoupledFlag() { return fgkCoupled; } | |
8c718ff8 | 61 | |
c0a16418 | 62 | private: |
71a2d3aa | 63 | /// Not implemented |
c0a16418 | 64 | AliMUONClusterFinderMLEM(const AliMUONClusterFinderMLEM& rhs); |
71a2d3aa | 65 | /// Not implemented |
c0a16418 | 66 | AliMUONClusterFinderMLEM& operator=(const AliMUONClusterFinderMLEM& rhs); |
67 | ||
68 | Bool_t WorkOnPreCluster(); | |
69 | ||
70 | /// Check precluster to simplify it (if possible), and return the simplified cluster | |
71 | AliMUONCluster* CheckPrecluster(const AliMUONCluster& cluster); | |
72 | AliMUONCluster* CheckPreclusterTwoCathodes(AliMUONCluster* cluster); | |
c0a16418 | 73 | |
74 | /// Checks whether a pad and a pixel have an overlapping area. | |
75 | Bool_t Overlap(const AliMUONPad& pad, const AliMUONPad& pixel); | |
76 | ||
77 | /// build array of pixels | |
78 | void BuildPixArray(AliMUONCluster& cluster); | |
79 | void BuildPixArrayOneCathode(AliMUONCluster& cluster); | |
2abdae6e | 80 | void PadOverHist(Int_t idir, Int_t ix0, Int_t iy0, AliMUONPad *pad); |
c0a16418 | 81 | |
82 | void RemovePixel(Int_t i); | |
83 | ||
84 | AliMUONPad* Pixel(Int_t i) const; | |
85 | ||
c0a16418 | 86 | Bool_t MainLoop(AliMUONCluster& cluster, Int_t iSimple); // repeat MLEM algorithm until pixels become sufficiently small |
87 | ||
88 | void Mlem(AliMUONCluster& cluster, Double_t *coef, Double_t *probi, Int_t nIter); // use MLEM for cluster finding | |
89 | ||
90 | void FindCOG(TH2D *mlem, Double_t *xyc); // find COG position around maximum bin | |
91 | Int_t FindNearest(AliMUONPad *pixPtr0); // find nearest neighbouring pixel to the given one | |
92 | ||
93 | Int_t FindLocalMaxima(TObjArray *pixArray, Int_t *localMax, Double_t *maxVal); // find local maxima | |
94 | void FlagLocalMax(TH2D *hist, Int_t i, Int_t j, Int_t *isLocalMax); // flag local max | |
95 | void FindCluster(AliMUONCluster& cluster, Int_t *localMax, Int_t iMax); // find cluster around local max | |
96 | void AddVirtualPad(AliMUONCluster& cluster); // add virtual pads for some clusters (if necessary) | |
97 | ||
98 | void PadsInXandY(AliMUONCluster& cluster, Int_t &nInX, Int_t &nInY) const; // get number of pads in X and Y | |
99 | ||
100 | /// Process simple cluster | |
101 | void Simple(AliMUONCluster& cluster); | |
102 | ||
c0a16418 | 103 | void Plot(const char* outputfile); |
104 | ||
105 | void ComputeCoefficients(AliMUONCluster& cluster, | |
106 | Double_t* coef, Double_t* probi); | |
107 | ||
108 | void CheckOverlaps(); | |
2abdae6e | 109 | void AddBinSimple(TH2D *mlem, Int_t ic, Int_t jc); |
8c718ff8 | 110 | void MaskPeaks(Int_t mask); |
2abdae6e | 111 | |
c0a16418 | 112 | private: |
05542040 | 113 | // Status flags for pads |
114 | static const Int_t fgkZero; ///< pad "basic" state | |
115 | static const Int_t fgkMustKeep; ///< do not kill (for pixels) | |
116 | static const Int_t fgkUseForFit; ///< should be used for fit | |
117 | static const Int_t fgkOver; ///< processing is over | |
118 | static const Int_t fgkModified; ///< modified pad charge | |
119 | static const Int_t fgkCoupled; ///< coupled pad | |
120 | ||
c0a16418 | 121 | // Some constants |
c0a16418 | 122 | static const Double_t fgkZeroSuppression; ///< average zero suppression value |
c0a16418 | 123 | static const Double_t fgkDistancePrecision; ///< used to check overlaps and so on |
124 | static const TVector2 fgkIncreaseSize; ///< idem | |
125 | static const TVector2 fgkDecreaseSize; ///< idem | |
126 | ||
71a2d3aa | 127 | AliMUONVClusterFinder* fPreClusterFinder; //!< the pre-clustering worker |
128 | AliMUONCluster* fPreCluster; //!< current pre-cluster | |
129 | TObjArray fClusterList; //!< clusters corresponding to the current pre-cluster | |
c0a16418 | 130 | |
71a2d3aa | 131 | Int_t fEventNumber; //!< current event being processed |
132 | Int_t fDetElemId; //!< current DE being processed | |
133 | Int_t fClusterNumber; //!< current cluster number | |
c0a16418 | 134 | |
135 | const AliMpVSegmentation *fSegmentation[2]; //!< new segmentation | |
136 | ||
c0a16418 | 137 | Int_t fCathBeg; //!< starting cathode (for combined cluster / track reco) |
138 | Int_t fPadBeg[2]; //!< starting pads (for combined cluster / track reco) | |
139 | ||
140 | static TMinuit* fgMinuit; //!< Fitter | |
141 | ||
142 | TObjArray* fPixArray; //!< collection of pixels | |
143 | Int_t fDebug; //!< debug level | |
144 | Bool_t fPlot; //!< whether we should plot thing (for debug only, quite slow!) | |
145 | ||
c0a16418 | 146 | AliMUONClusterSplitterMLEM* fSplitter; //!< helper class to go from pixel arrays to clusters |
147 | Int_t fNClusters; //!< total number of clusters | |
148 | Int_t fNAddVirtualPads; //!< number of clusters for which we added virtual pads | |
149 | ||
150 | ClassDef(AliMUONClusterFinderMLEM,0) // cluster finder in MUON arm of ALICE | |
151 | }; | |
152 | ||
153 | #endif |