1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
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 **************************************************************************/
16 ////////////////////////////////////////////////////////////////////////////
20 // Author: J. Klein (Jochen.Klein@cern.ch) //
22 ////////////////////////////////////////////////////////////////////////////
24 /* $Id: AliTRDtrackGTU.cxx 27566 2008-07-24 15:31:08Z cblume $ */
27 #include "TObjArray.h"
32 #include "AliTRDgtuParam.h"
33 #include "AliTRDtrackGTU.h"
34 #include "AliTRDtrackletGTU.h"
35 #include "AliTRDtrackletMCM.h"
36 #include "AliESDTrdTrack.h"
38 ClassImp(AliTRDtrackGTU)
40 AliTRDtrackGTU::AliTRDtrackGTU() :
59 fTracklets = new TClonesArray("AliTRDtrackletGTU", 6);
60 for (Int_t iTracklet = 0; iTracklet < 6; iTracklet++)
61 new ((*fTracklets)[iTracklet]) AliTRDtrackletGTU();
62 // fTracklets->BypassStreamer(kFALSE);
65 AliTRDtrackGTU::~AliTRDtrackGTU()
73 void AliTRDtrackGTU::AddTracklet(AliTRDtrackletGTU *tracklet, Int_t layer)
75 // add a tracklet to this track
77 if ( (fTrackletMask & (1 << layer)) != 0 ) {
78 AliError(Form("Only one tracklet per layer (%i) possible! Mask: 0x%02x", layer, fTrackletMask));
82 new ((*fTracklets)[layer]) AliTRDtrackletGTU(*tracklet);
84 fTrackletMask |= (1 << layer);
87 AliTRDtrackletGTU* AliTRDtrackGTU::GetTracklet(Int_t layer)
89 // get a pointer to the tracklet in the layer specified
91 return ((AliTRDtrackletGTU*) (*fTracklets)[layer]);
94 Int_t AliTRDtrackGTU::GetNTracklets() const
96 // returns the number of tracklets in this track
101 Bool_t AliTRDtrackGTU::IsTrackletInLayer(Int_t layer) const
103 // checks for a tracklet in the given layer
105 if ( (GetTrackletMask() & (1 << layer)) != 0)
111 void AliTRDtrackGTU::SetFitParams(Float_t a, Float_t b, Float_t c)
113 // set the fit parameters
120 Int_t AliTRDtrackGTU::GetZSubChannel()
122 // returns the z-subchannel
124 if (fZSubChannel < 0) {
125 for (Int_t layer = 0; layer < AliTRDgtuParam::GetNLayers(); layer++)
127 if (IsTrackletInLayer(layer))
128 fZSubChannel = ((AliTRDtrackletGTU*) (*fTracklets)[layer])->GetSubChannel(GetZChannel());
134 Int_t AliTRDtrackGTU::GetYapprox()
136 // returns an approximated y-position for the track
138 for (Int_t layer = 0; layer < AliTRDgtuParam::GetNLayers(); layer++)
140 if (IsTrackletInLayer(layer))
141 return ((AliTRDtrackletGTU*) (*fTracklets)[layer])->GetYProj();
146 AliESDTrdTrack* AliTRDtrackGTU::CreateTrdTrack() const
148 // creates an AliESDTrdTrack to be added to the ESD
150 AliESDTrdTrack *trk = new AliESDTrdTrack();
151 trk->SetPt(1./128. * fPt);
153 trk->SetDetector((Char_t) (fSector * 5 + fStack));
155 trk->SetLabel(fLabel);
156 AliInfo(Form("setting detector to: %i (sector: %i, stack: %i), readback: %i", fSector * 30 + fStack * 6, fSector, fStack, trk->GetDetector()));
160 Bool_t AliTRDtrackGTU::CookLabel()
162 TH1F *h = new TH1F("trkref", "trkref", 100000, 0, 100000);
163 for (Int_t iTracklet = 0; iTracklet < 6; iTracklet++) {
164 h->Fill( ((AliTRDtrackletGTU*) (*fTracklets)[iTracklet])->GetLabel());
166 if (h->GetEntries() > 0)
167 fLabel = h->GetMaximumBin();
171 return (fLabel >= 0);