Modificaions from Stefan Rossegger :
[u/mrichter/AliRoot.git] / TRD / AliTRDtrackletWord.cxx
CommitLineData
52c19022 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"
85c32c86 27#include "AliTRDgeometry.h"
f061fb9d 28#include "AliTRDpadPlane.h"
52c19022 29#include "AliLog.h"
30
31ClassImp(AliTRDtrackletWord)
32
85c32c86 33AliTRDgeometry* AliTRDtrackletWord::fgGeo = new AliTRDgeometry;
34
52c19022 35AliTRDtrackletWord::AliTRDtrackletWord(UInt_t trackletWord) :
36 AliTRDtrackletBase(),
37 fHCId(-1),
38 fTrackletWord(trackletWord)
39{
40
41}
42
43AliTRDtrackletWord::AliTRDtrackletWord(UInt_t trackletWord, Int_t hcid) :
44 AliTRDtrackletBase(),
45 fHCId(hcid),
46 fTrackletWord(trackletWord)
47{
48
49}
50
51AliTRDtrackletWord::AliTRDtrackletWord(const AliTRDtrackletWord &rhs) :
52 AliTRDtrackletBase(rhs),
53 fHCId(rhs.fHCId),
54 fTrackletWord(rhs.fTrackletWord)
55{
56
57}
58
59AliTRDtrackletWord::~AliTRDtrackletWord()
60{
61
62}
63
64Int_t AliTRDtrackletWord::GetYbin() const {
65 // returns (signed) value of Y
66 if (fTrackletWord & 0x1000) {
67 return -((~(fTrackletWord-1)) & 0x1fff);
68 }
69 else {
70 return (fTrackletWord & 0x1fff);
71 }
72}
73
74Int_t AliTRDtrackletWord::GetdY() const
75{
76 // returns (signed) value of the deflection length
77 if (fTrackletWord & (1 << 19)) {
78 return -((~((fTrackletWord >> 13) - 1)) & 0x7f);
79 }
80 else {
81 return ((fTrackletWord >> 13) & 0x7f);
82 }
83}
f061fb9d 84
85Int_t AliTRDtrackletWord::GetROB() const
86{
87 return 2 * (GetZbin() / 4) + (GetY() > 0 ? 1 : 0);
88}
89
90Int_t AliTRDtrackletWord::GetMCM() const
91{
92 AliTRDpadPlane *pp = fgGeo->GetPadPlane(GetDetector());
93 return (((Int_t) ((GetY()) / pp->GetWidthIPad()) + 72) / 18) % 4
94 + 4 * (GetZbin() % 4);
95}
96