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 }