1 /**************************************************************************
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4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
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8 * documentation strictly for non-commercial purposes is hereby granted *
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14 **************************************************************************/
18 Revision 1.5 2001/05/11 07:59:03 hristov
21 Revision 1.4 2001/01/26 20:00:53 hristov
22 Major upgrade of AliRoot code
24 Revision 1.3 2000/12/21 17:51:54 morsch
25 RN3 violations corrected
27 Revision 1.2 2000/11/23 10:09:38 gosset
28 Bug correction in AliMUONRecoDisplay.
30 Copyright, Revision 1.5 2001/05/11 07:59:03 hristov
31 Copyright, Index corrected
33 Copyright, Revision 1.4 2001/01/26 20:00:53 hristov
34 Copyright, Major upgrade of AliRoot code
36 Copyright, Revision 1.3 2000/12/21 17:51:54 morsch
37 Copyright, RN3 violations corrected
38 Copyright,, $Id$, comments at the right place for automatic documentation,
39 in AliMUONRecoEvent and AliMUONRecoDisplay
43 //Authors: Mihaela Gheata, Andrei Gheata 09/10/00
44 ////////////////////////////////////////////////////////////////////
46 // AliMUONRecoEvent, AliMUONRecoTrack (and AliMUONRecoDisplay) //
48 // Theses classes are used to store and retrieve //
49 // MUON reconstructed events. //
50 // The corresponding tree is constructed and filled //
51 // during the FillEvent() method of AliMUONEventReconstructor, //
52 // when all reconstruction information is available. //
54 ////////////////////////////////////////////////////////////////////
55 ////////////////////////////////////////////////////////////////////
57 // AliMUONRecoEvent //
59 // This class handles an array of reconstructed tracks. //
61 // - filling the tracks array according to the information //
62 // stored in AliMUONEventReconstructor class ; //
63 // - printing event and track informations : event numer, //
64 // number of tracks, hits positions, reconstr. mometum. //
66 ////////////////////////////////////////////////////////////////////
67 ////////////////////////////////////////////////////////////////////
69 // AliMUONRecoTrack //
71 // This class represents a reconstructed muon track //
72 // in the tree of reconstructed events. //
74 ////////////////////////////////////////////////////////////////////
78 #include <TClonesArray.h>
80 #include "AliMUONRecoEvent.h"
81 #include "AliMUONTrack.h"
82 #include "AliMUONTrackParam.h"
83 #include "AliMUONHitForRec.h"
84 #include "AliMUONTrackHit.h"
85 #include "AliHeader.h"
87 ClassImp(AliMUONRecoTrack)
88 ClassImp(AliMUONRecoEvent)
90 //-------------------------------------------------------------------
91 AliMUONRecoEvent::AliMUONRecoEvent(Int_t eventNo)
93 // Reconstructed event constructor
94 fTracks = new TClonesArray("AliMUONRecoTrack",200);
99 //-------------------------------------------------------------------
100 AliMUONRecoEvent::~AliMUONRecoEvent()
102 // Destructor of AliMUONRecoEvent
108 //-------------------------------------------------------------------
109 AliMUONRecoTrack* AliMUONRecoEvent::AddEmptyTrack()
111 // Add a empty AliMUONRecoTrackObject to the track list
112 TClonesArray &dumptracks = *fTracks;
113 return (new(dumptracks[fNtracks++])AliMUONRecoTrack(kTRUE));
116 //-------------------------------------------------------------------
117 void AliMUONRecoEvent::Clear(Option_t *option)
119 // Clears all track pointers from the list
120 // fTracks->Clear(option);
125 //-------------------------------------------------------------------
126 void AliMUONRecoEvent::EventInfo()
128 // Prints reconstructed event information
129 cout << "*********************Reco Dumper**************************" << endl;
130 cout << "Event number : " << fNevr << endl;
131 cout << " Number of tracks : " << fNtracks << endl;
132 AliMUONRecoTrack *currentTrack =0;
133 Int_t trackIndex = 0;
134 for(trackIndex=0; trackIndex<fNtracks; trackIndex++) {
135 currentTrack = (AliMUONRecoTrack*)fTracks->UncheckedAt(trackIndex);
136 cout << "Track : " << trackIndex << endl;
137 cout << " Sign : " << currentTrack->GetSign() << endl;
138 cout << " Vertex position : " << currentTrack->GetVertexPos() << endl;
140 for (Int_t axis=0; axis<3; axis++) {
141 momreco[axis] = currentTrack->GetMomReconstr(axis);
143 cout << " Reconstructed mom. : " << "Px=" << momreco[0] << "Py=" << momreco[1] << "Pz=" << momreco[2] << endl;
144 cout << " Chi squared : " << currentTrack->GetChi2r() << endl;
145 cout << " Hits positions : " << endl;
146 Double_t xhit, yhit, zhit;
147 for (Int_t chamber=0; chamber<10; chamber++) {
148 xhit = currentTrack->GetPosX(chamber);
149 yhit = currentTrack->GetPosY(chamber);
150 zhit = currentTrack->GetPosZ(chamber);
151 // cout <<" chamber" << chamber << " X=" << xhit << " Y=" << yhit << " Z=" << zhit << endl;
154 cout << "**********************************************************" << endl;
157 //-------------------------------------------------------------------
158 Bool_t AliMUONRecoEvent::MakeDumpTracks(TClonesArray *tracksPtr)
160 // This method takes the pointer of the list of reconstructed tracks from
161 // AliMUONEventReconstructor and fill the reconstructed AliMUONRecoEvent
163 cout << "Enter MakeDumpTracks..." << endl;
164 Int_t nTracks = tracksPtr->GetEntriesFast();
166 cout << "AliMUONRecoEvent::MakeDumpTracks: Number of tracks is zero !" << endl;
169 cout << tracksPtr << endl;
171 cout << "AliMUONRecoEvent::MakeDumpTracks() : You should call SetRecoTracksPtr() first..." << endl;
175 Int_t noEvent = gAlice->GetHeader()->GetEvent();
176 tracksPtr->Compress(); // simple loop
177 AliMUONRecoTrack *currentTrack;
178 Int_t trackIndex = 0, nTrackHits = 0;
179 Double_t z,bendingSlope, nonBendingSlope, pYZ;
180 Double_t pX, pY, pZ; // reconstructed momentum components
181 Int_t isign; // charge sign
182 AliMUONTrack *track = 0;
183 AliMUONTrackParam *trackParam = 0;
184 // Fill event number and number of tracks
186 // Loop over reconstructed tracks
187 for (trackIndex=0; trackIndex<nTracks; trackIndex++) {
188 currentTrack = AddEmptyTrack();
189 track = (AliMUONTrack*) ((*tracksPtr)[trackIndex]);
190 nTrackHits = track->GetNTrackHits();
191 trackParam = track->GetTrackParamAtVertex();
192 bendingSlope = trackParam->GetBendingSlope();
193 nonBendingSlope = trackParam->GetNonBendingSlope();
194 z = trackParam->GetZ();
195 pYZ = 1/TMath::Abs(trackParam->GetInverseBendingMomentum());
196 pZ = pYZ/TMath::Sqrt(1+bendingSlope*bendingSlope);
197 pX = pZ * nonBendingSlope;
198 pY = pZ * bendingSlope;
199 if (trackParam->GetInverseBendingMomentum()<0) isign=-1; else isign=1;
200 currentTrack->SetVertexPos(z);
201 currentTrack->SetMomReconstr(pX,pY,pZ);
202 currentTrack->SetSign(isign);
203 // currentTrack->SetChi2r(trackParam->GetChi2());
204 currentTrack->SetChi2r(0);
205 AliMUONTrackHit *trackHit;
206 Double_t xhit,yhit,zhit;
207 // Loop over track hits
208 for (Int_t trackHitIndex = 0; trackHitIndex < nTrackHits; trackHitIndex++) {
209 trackHit = (AliMUONTrackHit*) (*(track->GetTrackHitsPtr()))[trackHitIndex];
210 xhit = trackHit->GetHitForRecPtr()->GetNonBendingCoor();
211 yhit = trackHit->GetHitForRecPtr()->GetBendingCoor();
212 zhit = trackHit->GetHitForRecPtr()->GetZ();
213 if (trackHitIndex >= 0 && trackHitIndex < 10) {
214 currentTrack->SetHitPosition(trackHitIndex,xhit,yhit,zhit);
215 } else { cout << "track " << trackIndex << " hit out of range" << endl;}
218 cout << "Leave MakeDumpTracks..." << endl;
222 //-------------------------------------------------------------------
223 void AliMUONRecoEvent::Streamer(TBuffer &R__b)
225 // Streams an object of class AliMUONRecoEvent
226 if (R__b.IsReading()) {
228 AliMUONRecoEvent::Class()->ReadBuffer(R__b, this);
230 cout << "...writing event to file...\n";
231 AliMUONRecoEvent::Class()->WriteBuffer(R__b, this);
235 //-------------------------------------------------------------------
236 AliMUONRecoTrack::AliMUONRecoTrack(Bool_t active)
238 //Constructor of AliMUONRecoTrack
243 for (Int_t axis=0; axis<3; axis++) {
246 for (Int_t chamber=0; chamber<10; chamber++) {
247 fPosX[chamber] = 0.0;
248 fPosY[chamber] = 0.0;
249 fPosZ[chamber] = 0.0;
254 //-------------------------------------------------------------------
255 const Double_t AliMUONRecoTrack::Phi()
257 // Return trach phi angle
258 return TMath::ATan2(fPr[2], fPr[1]);
261 //-------------------------------------------------------------------
262 const Double_t AliMUONRecoTrack::Theta()
264 // Return trach theta angle
265 return TMath::ACos(fPr[2] / P());
268 //-------------------------------------------------------------------
269 void AliMUONRecoTrack::SetMomReconstr(Double_t px, Double_t py, Double_t pz)
271 // Set the track reconstructed momentum
277 //-------------------------------------------------------------------
278 void AliMUONRecoTrack::SetHitPosition(Int_t chamber, Double_t x, Double_t y, Double_t z)
280 // Set hit coordinates in chamber[0..9]
285 //-------------------------------------------------------------------
286 void AliMUONRecoTrack::TrackInfo()
288 // Prints momentum info for this track
289 cout << "Px=" << GetMomReconstr(0) << " Py=" << GetMomReconstr(1) <<
290 " Pz=" << GetMomReconstr(2) << " P=" << P() << endl;