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f7336fa3 | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
3 | * * | |
4 | * Author: The ALICE Off-line Project. * | |
5 | * Contributors are mentioned in the code where appropriate. * | |
6 | * * | |
7 | * Permission to use, copy, modify and distribute this software and its * | |
8 | * documentation strictly for non-commercial purposes is hereby granted * | |
9 | * without fee, provided that the above copyright notice appears in all * | |
10 | * copies and that both the copyright notice and this permission notice * | |
11 | * appear in the supporting documentation. The authors make no claims * | |
12 | * about the suitability of this software for any purpose. It is * | |
13 | * provided "as is" without express or implied warranty. * | |
14 | **************************************************************************/ | |
15 | ||
16 | /* | |
17 | $Log$ | |
18 | */ | |
19 | ||
20 | /////////////////////////////////////////////////////////////////////////////// | |
21 | // // | |
22 | // TRD reconstructed point // | |
23 | // // | |
24 | /////////////////////////////////////////////////////////////////////////////// | |
25 | ||
26 | #include "AliTRDgeometry.h" | |
27 | #include "AliTRDrecPoint.h" | |
28 | #include "AliTRD.h" | |
29 | ||
30 | ClassImp(AliTRDrecPoint) | |
31 | ||
32 | //_____________________________________________________________________________ | |
33 | AliTRDrecPoint::AliTRDrecPoint():AliRecPoint() | |
34 | { | |
35 | // | |
36 | // Standard constructor | |
37 | // | |
38 | ||
39 | fDetector = 0; | |
40 | ||
41 | AliTRD *TRD; | |
42 | if ((gAlice) && | |
43 | (TRD = ((AliTRD*) gAlice->GetDetector("TRD")))) { | |
44 | fGeom = TRD->GetGeometry(); | |
45 | } | |
46 | else { | |
47 | fGeom = NULL; | |
48 | } | |
49 | ||
50 | } | |
51 | ||
52 | //_____________________________________________________________________________ | |
53 | void AliTRDrecPoint::AddDigit(Int_t digit) | |
54 | { | |
55 | // | |
56 | // Adds the index of a digit to the digits list | |
57 | // | |
58 | ||
59 | // First resize the list | |
60 | // (no clusters with more than 3 digits for the TRD | |
61 | if ((fMulDigit == 0) && (fMaxDigit >= 5)) { | |
62 | fMaxDigit = 5; | |
63 | delete fDigitsList; | |
64 | fDigitsList = new int[fMaxDigit]; | |
65 | } | |
66 | ||
67 | // Increase the size of the list if necessary | |
68 | if (fMulDigit >= fMaxDigit) { | |
69 | int *tempo = new (int[fMaxDigit*=2]); | |
70 | Int_t index; | |
71 | for (index = 0; index < fMulDigit; index++) | |
72 | tempo[index] = fDigitsList[index]; | |
73 | delete fDigitsList; | |
74 | fDigitsList = tempo; | |
75 | } | |
76 | ||
77 | fDigitsList[fMulDigit++] = digit; | |
78 | ||
79 | } | |
80 | ||
81 | //_____________________________________________________________________________ | |
82 | void AliTRDrecPoint::SetLocalPosition(TVector3 &pos) | |
83 | { | |
84 | // | |
85 | // Sets the position of the point in the local coordinate system | |
86 | // (row,col,time) and calculates the error matrix in the same | |
87 | // system. | |
88 | // | |
89 | ||
90 | const Float_t sq12 = 3.464101615; | |
91 | ||
92 | // Set the position | |
93 | fLocPos = pos; | |
94 | ||
95 | // Set the error matrix | |
96 | // row: pad-size / sqrt(12) | |
97 | // col: not defined yet | |
98 | // time: bin-size / sqrt(12) | |
99 | fLocPosM->operator()(0,0) = ((AliTRDgeometry *) fGeom)->GetRowPadSize() | |
100 | / sq12; | |
101 | fLocPosM->operator()(1,1) = 0.0; | |
102 | fLocPosM->operator()(2,2) = ((AliTRDgeometry *) fGeom)->GetTimeBinSize() | |
103 | / sq12; | |
104 | ||
105 | } |