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a918d77a | 1 | #ifndef ALIPMDCLUSTERING_H |
2 | #define ALIPMDCLUSTERING_H | |
ed228cbc | 3 | /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * |
4 | * See cxx source for full Copyright notice */ | |
deb0fc73 | 5 | //-----------------------------------------------------// |
6 | // // | |
7 | // Header File : PMDClustering.h, Version 00 // | |
8 | // // | |
9 | // Date : September 26 2002 // | |
10 | // // | |
11 | // clustering code for alice pmd // | |
12 | // // | |
13 | //-----------------------------------------------------// | |
e1287360 | 14 | /* -------------------------------------------------------------------- |
15 | Code developed by S. C. Phatak, Institute of Physics, | |
deb0fc73 | 16 | Bhubaneswar 751 005 ( phatak@iopb.res.in ) Given the energy deposited |
17 | ( or ADC value ) in each cell of supermodule ( pmd or cpv ), the code | |
18 | builds up superclusters and breaks them into clusters. The input is | |
19 | in array d[ndimx][ndimy] and cluster information is in array | |
e1287360 | 20 | clusters[5][5000]. integer clno gives total number of clusters in the |
deb0fc73 | 21 | supermodule. |
e1287360 | 22 | d, clno and clusters are the only global ( public ) variables. Others |
23 | are local ( private ) to the code. | |
deb0fc73 | 24 | At the moment, the data is read for whole detector ( all supermodules |
25 | and pmd as well as cpv. This will have to be modify later ) | |
deb0fc73 | 26 | LAST UPDATE : October 23, 2002 |
e1287360 | 27 | -----------------------------------------------------------------------*/ |
deb0fc73 | 28 | #include "Rtypes.h" |
29 | ||
30 | class TNtuple; | |
31 | class TObjArray; | |
deb0fc73 | 32 | class AliPMDcluster; |
ebd83c56 | 33 | class AliPMDClustering: public TObject |
deb0fc73 | 34 | { |
a918d77a | 35 | |
36 | public: | |
37 | AliPMDClustering(); | |
38 | virtual ~AliPMDClustering(); | |
e1287360 | 39 | |
7e9508a7 | 40 | void DoClust(Int_t idet, Int_t ismn, Double_t celladc[][96], |
41 | TObjArray *pmdcont); | |
42 | void Order(); | |
43 | ||
44 | Int_t CrClust(Double_t ave, Double_t cutoff, Int_t nmx1); | |
45 | void RefClust(Int_t incr); | |
46 | void GaussFit(Int_t ncell, Int_t nclust, Double_t &x, | |
47 | Double_t &y, Double_t &z, Double_t &xc, | |
48 | Double_t &yc, Double_t &zc, Double_t &rc); | |
a918d77a | 49 | Double_t Distance(Double_t x1, Double_t y1, |
50 | Double_t x2, Double_t y2); | |
51 | Double_t Ranmar() const; | |
7e9508a7 | 52 | void SetEdepCut(Float_t decut); |
53 | ||
deb0fc73 | 54 | protected: |
55 | ||
a918d77a | 56 | static const Double_t fgkSqroot3by2; // fgkSqroot3by2 = sqrt(3.)/2. |
e1287360 | 57 | /*enum { |
a918d77a | 58 | kNMX = 4608, |
59 | kNDIMX = 48, | |
60 | kNDIMY = 96 | |
e1287360 | 61 | };*/ |
62 | /* | |
63 | Proposed changes inNMX, kNDIMX and kNDIMY by S. C. Phatak to account | |
64 | for rectangular ( vs rhomboid ) geometry. | |
65 | To keep the clustering functional, we define a rhomboid which | |
66 | superscribes the rectangle. So we need to pad up dummy cells in x | |
67 | direction. The number of these cells is 96/2-1=47 in each row ( value | |
68 | of x ). For first two rows, all dummy cells are to the left. For | |
69 | every two rows add one cell to right and subtract one from left. | |
70 | So previous (i,j) values go over to ( i',j) i'=i+(96-j)/2-1 | |
71 | Note we use C++ convention so i and j run from 0 to 47 or 95. | |
72 | */ | |
deb0fc73 | 73 | |
e1287360 | 74 | enum { |
75 | kNMX = 9120, | |
76 | kNDIMX = 95, | |
77 | kNDIMY = 96, | |
78 | kNDIMXr = 48, | |
79 | kNDIMYr = 96 | |
80 | }; | |
deb0fc73 | 81 | /* |
a918d77a | 82 | kNMX : # of cells in a supermodule |
83 | kNDIMX : maximum number of cells along x direction (origin at one corner) | |
84 | kNDIMY : maximum number of cells along axis at 60 degrees with x axis | |
deb0fc73 | 85 | */ |
86 | ||
a918d77a | 87 | Double_t fEdepCell[kNDIMX][kNDIMY]; //energy(ADC) in each cell of the supermodule |
88 | Double_t fClusters[5][5000]; // Cluster informations | |
89 | Int_t fClno; // number of clusters in a supermodule | |
deb0fc73 | 90 | |
91 | /* | |
deb0fc73 | 92 | clusters[0][i] --- x position of the cluster center |
93 | clusters[1][i] --- y position of the cluster center | |
94 | clusters[2][i] --- total energy in the cluster | |
e1287360 | 95 | clusters[3][i] --- number of cells forming the cluster |
deb0fc73 | 96 | ( possibly fractional ) |
97 | clusters[4][i] --- cluster radius | |
deb0fc73 | 98 | */ |
99 | ||
a918d77a | 100 | Int_t fIord[2][kNMX]; // ordered list of i and j according to decreasing energy dep. |
101 | Int_t fInfocl[2][kNDIMX][kNDIMY]; // cellwise information on the cluster to which the cell | |
102 | Int_t fInfcl[3][kNMX]; // cluster information [0][i] -- cluster number | |
103 | Double_t fCoord[2][kNDIMX][kNDIMY]; | |
deb0fc73 | 104 | |
e1287360 | 105 | /* |
106 | fIord --- ordered list of i and j according to decreasing energy dep. | |
107 | fInfocl --- cellwise information on the cluster to which the cell | |
108 | belongs and whether it has largest energy dep. or not | |
109 | ( now redundant - probably ) | |
110 | fInfcl --- cluster information [0][i] -- cluster number | |
111 | [1][i] -- i of the cell | |
112 | [2][i] -- j of the cell | |
113 | coord --- x and y coordinates of center of each cell | |
deb0fc73 | 114 | */ |
115 | ||
a918d77a | 116 | Float_t fCutoff; // Energy(ADC) cutoff per cell before clustering |
deb0fc73 | 117 | |
7e9508a7 | 118 | ClassDef(AliPMDClustering,5) // Does clustering for PMD |
deb0fc73 | 119 | }; |
120 | #endif |