TRD/AliTRDtrackletGTU.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: AliTRDtrackletGTU.cxx 28397 2008-09-02 09:33:00Z cblume $ */
  17
  18 ////////////////////////////////////////////////////////////////////////////
  19 //                                                                        //
  20 //  GTU tracklet                                                          //
  21 //                                                                        //
  22 //  Author: J. Klein (Jochen.Klein@cern.ch)                               //
  23 //                                                                        //
  24 ////////////////////////////////////////////////////////////////////////////
  25
  26 #include "TMath.h"
  27 #include "TClass.h"
  28
  29 #include "AliTRDtrackletGTU.h"
  30 #include "AliTRDtrackletWord.h"
  31 #include "AliTRDtrackletMCM.h"
  32 #include "AliLog.h"
  33 #include "AliTRDgtuParam.h"
  34 #include "AliTRDgeometry.h"
  35 #include "AliTRDpadPlane.h"
  36
  37 ClassImp(AliTRDtrackletGTU)
  38
  39 AliTRDtrackletBase* AliTRDtrackletGTU::fgkDummyTracklet = new AliTRDtrackletWord(0);
  40
  41 AliTRDtrackletGTU::AliTRDtrackletGTU() :
  42   AliTRDtrackletBase(),
  43   fGtuParam(AliTRDgtuParam::Instance()),
  44   fTracklet(fgkDummyTracklet),
  45   fTrackletESD(0x0),
  46   fMCMtrackletIndex(-1),
  47   fAssignedZ(kFALSE),
  48   fAlpha(0),
  49   fYProj(0),
  50   fYPrime(0),
  51   fIndex(0)
  52 {
  53   // ctor for any tracklet deriving from AliTRDtrackletBase
  54
  55   for (Int_t zch = 0; zch < fGtuParam->GetNZChannels(); zch++)
  56     fSubChannel[zch] = 0;
  57 }
  58
  59 AliTRDtrackletGTU::AliTRDtrackletGTU(AliTRDtrackletBase *tracklet) :
  60   AliTRDtrackletBase(*tracklet),
  61   fGtuParam(AliTRDgtuParam::Instance()),
  62   fTracklet(fgkDummyTracklet),
  63   fTrackletESD(0x0),
  64   fMCMtrackletIndex(-1),
  65   fAssignedZ(kFALSE),
  66   fAlpha(0),
  67   fYProj(0),
  68   fYPrime(0),
  69   fIndex(0)
  70 {
  71   // ctor for any tracklet deriving from AliTRDtrackletBase
  72
  73   for (Int_t zch = 0; zch < fGtuParam->GetNZChannels(); zch++)
  74     fSubChannel[zch] = 0;
  75   fTracklet = tracklet;
  76   if ( fTracklet->IsA() == TClass::GetClass("AliTRDtrackletMCM")) {
  77       AliDebug(5,Form("label from mcm tracklet: %i", ((AliTRDtrackletMCM*) fTracklet)->GetLabel()));
  78   }
  79 }
  80
  81 AliTRDtrackletGTU::AliTRDtrackletGTU(AliESDTrdTracklet *tracklet) :
  82   AliTRDtrackletBase(),
  83   fGtuParam(AliTRDgtuParam::Instance()),
  84   fTracklet(fgkDummyTracklet),
  85   fTrackletESD(tracklet),
  86   fMCMtrackletIndex(-1),  // has to be set via SetMCMtrackletIndex() separately
  87   fAssignedZ(kFALSE),
  88   fAlpha(0),
  89   fYProj(0),
  90   fYPrime(0),
  91   fIndex(0)
  92 {
  93   // ctor for an AliESDTrdTracklet
  94
  95   for (Int_t zch = 0; zch < fGtuParam->GetNZChannels(); zch++)
  96     fSubChannel[zch] = 0;
  97 }
  98
  99 AliTRDtrackletGTU::AliTRDtrackletGTU(const AliTRDtrackletGTU& tracklet) :
 100   AliTRDtrackletBase(tracklet),
 101   fGtuParam(AliTRDgtuParam::Instance()),
 102   fTracklet(tracklet.fTracklet),
 103   fTrackletESD(tracklet.fTrackletESD),
 104   fMCMtrackletIndex(tracklet.fMCMtrackletIndex),
 105   fAssignedZ(tracklet.fAssignedZ),
 106   fAlpha(tracklet.fAlpha),
 107   fYProj(tracklet.fYProj),
 108   fYPrime(tracklet.fYPrime),
 109   fIndex(tracklet.fIndex)
 110 {
 111   // copy ctor
 112
 113   for (Int_t zch = 0; zch < fGtuParam->GetNZChannels(); zch++)
 114     fSubChannel[zch] = tracklet.fSubChannel[zch];
 115 }
 116
 117 AliTRDtrackletGTU& AliTRDtrackletGTU::operator=(const AliTRDtrackletGTU &rhs)
 118 {
 119   // assignment operator
 120
 121   if (&rhs != this) {
 122     fTracklet = rhs.fTracklet;
 123     fTrackletESD = rhs.fTrackletESD;
 124     fMCMtrackletIndex = rhs.fMCMtrackletIndex;
 125     for (Int_t zch = 0; zch < fGtuParam->GetNZChannels(); zch++)
 126       fSubChannel[zch] = rhs.fSubChannel[zch];
 127     fIndex = rhs.fIndex;
 128     fYPrime = rhs.fYPrime;
 129     fYProj = rhs.fYProj;
 130     fAlpha = rhs.fAlpha;
 131     fAssignedZ = rhs.fAssignedZ;
 132   }
 133
 134   return *this;
 135 }
 136
 137 AliTRDtrackletGTU::~AliTRDtrackletGTU()
 138 {
 139   // dtor
 140 }
 141
 142 void AliTRDtrackletGTU::SetSubChannel(Int_t zch, Int_t subch)
 143 {
 144   // set the subchannel in the given z-channel
 145   fAssignedZ = kTRUE;
 146   fSubChannel[zch] = subch;
 147 }
 148
 149 Int_t AliTRDtrackletGTU::GetSubChannel(Int_t zch) const
 150 {
 151   // get the subchannel in the given z-channel
 152   return fSubChannel[zch];
 153 }
 154
 155 Int_t AliTRDtrackletGTU::GetLabel() const
 156 {
 157   // get the MC label for the tracklet, -1 if none
 158
 159   if (fTrackletESD)
 160     return fTrackletESD->GetLabel();
 161   else if ( fTracklet->IsA() == TClass::GetClass("AliTRDtrackletMCM"))
 162     return ((AliTRDtrackletMCM*) fTracklet)->GetLabel();
 163   else
 164     return -1;
 165 }
 166
 167 /*
 168 Float_t AliTRDtrackletGTU::GetPhysX(Int_t layer)
 169 {
 170   // get the x-position (in the local system) assuming the tracklet is in the given layer
 171   return fGtuParam->GetGeo()->GetTime0(layer);
 172 }
 173
 174 Float_t AliTRDtrackletGTU::GetPhysY()
 175 {
 176   //
 177   return GetYbin() * 0.0160;
 178 }
 179
 180 Float_t AliTRDtrackletGTU::GetPhysAlpha()
 181 {
 182   return GetAlpha() * 0.01; // wrong factor!
 183 }
 184
 185 Float_t AliTRDtrackletGTU::GetPhysZ(Int_t stack, Int_t layer)
 186 {
 187   return fGtuParam->GetGeo()->GetPadPlane(layer, stack)->GetRowPos(GetZbin()); // not the middle of a pad!
 188 }
 189 */