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[u/mrichter/AliRoot.git] / TRD / AliTRDtrackletWord.cxx
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 "AliLog.h"
29
30 ClassImp(AliTRDtrackletWord)
31
32 AliTRDgeometry* AliTRDtrackletWord::fgGeo = new AliTRDgeometry;
33
34 AliTRDtrackletWord::AliTRDtrackletWord(UInt_t trackletWord) :
35   AliTRDtrackletBase(),
36   fHCId(-1),
37   fTrackletWord(trackletWord)
38
39
40 }
41
42 AliTRDtrackletWord::AliTRDtrackletWord(UInt_t trackletWord, Int_t hcid) :
43   AliTRDtrackletBase(),
44   fHCId(hcid),
45   fTrackletWord(trackletWord)
46
47
48 }
49
50 AliTRDtrackletWord::AliTRDtrackletWord(const AliTRDtrackletWord &rhs) :
51   AliTRDtrackletBase(rhs),
52   fHCId(rhs.fHCId),
53   fTrackletWord(rhs.fTrackletWord)
54 {
55
56 }
57
58 AliTRDtrackletWord::~AliTRDtrackletWord() 
59 {
60
61 }
62
63 Int_t AliTRDtrackletWord::GetYbin() const {
64   // returns (signed) value of Y
65   if (fTrackletWord & 0x1000) {
66     return -((~(fTrackletWord-1)) & 0x1fff);
67   }
68   else {
69     return (fTrackletWord & 0x1fff);
70   }
71 }
72
73 Int_t AliTRDtrackletWord::GetdY() const 
74 {
75   // returns (signed) value of the deflection length
76   if (fTrackletWord & (1 << 19)) {
77     return -((~((fTrackletWord >> 13) - 1)) & 0x7f);
78   }
79   else {
80     return ((fTrackletWord >> 13) & 0x7f);
81   }
82 }