| | 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 | /* $Id: AliTRDtrackletWord.cxx 28397 2008-09-02 09:33:00Z cblume $ */ |
| | 17 | |
| | 18 | //////////////////////////////////////////////////////////////////////////// |
| | 19 | // // |
| | 20 | // A tracklet word as from FEE // |
| | 21 | // // |
| | 22 | // Author: J. Klein (Jochen.Klein@cern.ch) // |
| | 23 | // // |
| | 24 | //////////////////////////////////////////////////////////////////////////// |
| | 25 | |
| | 26 | #include "AliTRDtrackletWord.h" |
| | 27 | #include "AliTRDgeometry.h" |
| | 28 | #include "AliTRDpadPlane.h" |
| | 29 | #include "AliLog.h" |
| | 30 | |
| | 31 | ClassImp(AliTRDtrackletWord) |
| | 32 | |
| | 33 | AliTRDgeometry* AliTRDtrackletWord::fgGeo = 0x0; |
| | 34 | |
| | 35 | AliTRDtrackletWord::AliTRDtrackletWord(UInt_t trackletWord) : |
| | 36 | AliTRDtrackletBase(), |
| | 37 | fHCId(-1), |
| | 38 | fTrackletWord(trackletWord) |
| | 39 | { |
| | 40 | if (!fgGeo) |
| | 41 | fgGeo = new AliTRDgeometry; |
| | 42 | } |
| | 43 | |
| | 44 | AliTRDtrackletWord::AliTRDtrackletWord(UInt_t trackletWord, Int_t hcid) : |
| | 45 | AliTRDtrackletBase(), |
| | 46 | fHCId(hcid), |
| | 47 | fTrackletWord(trackletWord) |
| | 48 | { |
| | 49 | if (!fgGeo) |
| | 50 | fgGeo = new AliTRDgeometry; |
| | 51 | } |
| | 52 | |
| | 53 | AliTRDtrackletWord::AliTRDtrackletWord(const AliTRDtrackletWord &rhs) : |
| | 54 | AliTRDtrackletBase(rhs), |
| | 55 | fHCId(rhs.fHCId), |
| | 56 | fTrackletWord(rhs.fTrackletWord) |
| | 57 | { |
| | 58 | |
| | 59 | if (!fgGeo) |
| | 60 | fgGeo = new AliTRDgeometry; |
| | 61 | } |
| | 62 | |
| | 63 | AliTRDtrackletWord::~AliTRDtrackletWord() |
| | 64 | { |
| | 65 | |
| | 66 | } |
| | 67 | |
| | 68 | Int_t AliTRDtrackletWord::GetYbin() const { |
| | 69 | // returns (signed) value of Y |
| | 70 | if (fTrackletWord & 0x1000) { |
| | 71 | return -((~(fTrackletWord-1)) & 0x1fff); |
| | 72 | } |
| | 73 | else { |
| | 74 | return (fTrackletWord & 0x1fff); |
| | 75 | } |
| | 76 | } |
| | 77 | |
| | 78 | Int_t AliTRDtrackletWord::GetdY() const |
| | 79 | { |
| | 80 | // returns (signed) value of the deflection length |
| | 81 | if (fTrackletWord & (1 << 19)) { |
| | 82 | return -((~((fTrackletWord >> 13) - 1)) & 0x7f); |
| | 83 | } |
| | 84 | else { |
| | 85 | return ((fTrackletWord >> 13) & 0x7f); |
| | 86 | } |
| | 87 | } |
| | 88 | |
| | 89 | Int_t AliTRDtrackletWord::GetROB() const |
| | 90 | { |
| | 91 | return 2 * (GetZbin() / 4) + (GetY() > 0 ? 1 : 0); |
| | 92 | } |
| | 93 | |
| | 94 | Int_t AliTRDtrackletWord::GetMCM() const |
| | 95 | { |
| | 96 | AliTRDpadPlane *pp = fgGeo->GetPadPlane(GetDetector()); |
| | 97 | return (((Int_t) ((GetY()) / pp->GetWidthIPad()) + 72) / 18) % 4 |
| | 98 | + 4 * (GetZbin() % 4); |
| | 99 | } |
| | 100 | |
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