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. *
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8 * documentation strictly for non-commercial purposes is hereby granted *
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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 *
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14 **************************************************************************/
18 Revision 1.3 2000/12/21 17:51:54 morsch
19 RN3 violations corrected
21 Revision 1.2 2000/11/23 10:09:38 gosset
22 Bug correction in AliMUONRecoDisplay.
24 Copyright, Revision 1.3 2000/12/21 17:51:54 morsch
25 Copyright, RN3 violations corrected
26 Copyright,, $Id$, comments at the right place for automatic documentation,
27 in AliMUONRecoEvent and AliMUONRecoDisplay
31 //Authors: Mihaela Gheata, Andrei Gheata 09/10/00
32 ////////////////////////////////////////////////////////////////////
34 // AliMUONRecoEvent, AliMUONRecoTrack (and AliMUONRecoDisplay) //
36 // Theses classes are used to store and retrieve //
37 // MUON reconstructed events. //
38 // The corresponding tree is constructed and filled //
39 // during the FillEvent() method of AliMUONEventReconstructor, //
40 // when all reconstruction information is available. //
42 ////////////////////////////////////////////////////////////////////
43 ////////////////////////////////////////////////////////////////////
45 // AliMUONRecoEvent //
47 // This class handles an array of reconstructed tracks. //
49 // - filling the tracks array according to the information //
50 // stored in AliMUONEventReconstructor class ; //
51 // - printing event and track informations : event numer, //
52 // number of tracks, hits positions, reconstr. mometum. //
54 ////////////////////////////////////////////////////////////////////
55 ////////////////////////////////////////////////////////////////////
57 // AliMUONRecoTrack //
59 // This class represents a reconstructed muon track //
60 // in the tree of reconstructed events. //
62 ////////////////////////////////////////////////////////////////////
66 #include <TClonesArray.h>
68 #include "AliMUONRecoEvent.h"
69 #include "AliMUONTrack.h"
70 #include "AliMUONTrackParam.h"
71 #include "AliMUONHitForRec.h"
72 #include "AliMUONTrackHit.h"
74 ClassImp(AliMUONRecoTrack)
75 ClassImp(AliMUONRecoEvent)
77 //-------------------------------------------------------------------
78 AliMUONRecoEvent::AliMUONRecoEvent(Int_t eventNo)
80 // Reconstructed event constructor
81 fTracks = new TClonesArray("AliMUONRecoTrack",200);
86 //-------------------------------------------------------------------
87 AliMUONRecoEvent::~AliMUONRecoEvent()
89 // Destructor of AliMUONRecoEvent
95 //-------------------------------------------------------------------
96 AliMUONRecoTrack* AliMUONRecoEvent::AddEmptyTrack()
98 // Add a empty AliMUONRecoTrackObject to the track list
99 TClonesArray &dumptracks = *fTracks;
100 return (new(dumptracks[fNtracks++])AliMUONRecoTrack(kTRUE));
103 //-------------------------------------------------------------------
104 void AliMUONRecoEvent::Clear(Option_t *option)
106 // Clears all track pointers from the list
107 // fTracks->Clear(option);
112 //-------------------------------------------------------------------
113 void AliMUONRecoEvent::EventInfo()
115 // Prints reconstructed event information
116 cout << "*********************Reco Dumper**************************" << endl;
117 cout << "Event number : " << fNevr << endl;
118 cout << " Number of tracks : " << fNtracks << endl;
119 AliMUONRecoTrack *currentTrack =0;
120 Int_t trackIndex = 0;
121 for(trackIndex=0; trackIndex<fNtracks; trackIndex++) {
122 currentTrack = (AliMUONRecoTrack*)fTracks->UncheckedAt(trackIndex);
123 cout << "Track : " << trackIndex << endl;
124 cout << " Sign : " << currentTrack->GetSign() << endl;
125 cout << " Vertex position : " << currentTrack->GetVertexPos() << endl;
127 for (Int_t axis=0; axis<3; axis++) {
128 momreco[axis] = currentTrack->GetMomReconstr(axis);
130 cout << " Reconstructed mom. : " << "Px=" << momreco[0] << "Py=" << momreco[1] << "Pz=" << momreco[2] << endl;
131 cout << " Chi squared : " << currentTrack->GetChi2r() << endl;
132 cout << " Hits positions : " << endl;
133 Double_t xhit, yhit, zhit;
134 for (Int_t chamber=0; chamber<10; chamber++) {
135 xhit = currentTrack->GetPosX(chamber);
136 yhit = currentTrack->GetPosY(chamber);
137 zhit = currentTrack->GetPosZ(chamber);
138 // cout <<" chamber" << chamber << " X=" << xhit << " Y=" << yhit << " Z=" << zhit << endl;
141 cout << "**********************************************************" << endl;
144 //-------------------------------------------------------------------
145 Bool_t AliMUONRecoEvent::MakeDumpTracks(TClonesArray *tracksPtr)
147 // This method takes the pointer of the list of reconstructed tracks from
148 // AliMUONEventReconstructor and fill the reconstructed AliMUONRecoEvent
150 cout << "Enter MakeDumpTracks..." << endl;
151 Int_t nTracks = tracksPtr->GetEntriesFast();
153 cout << "AliMUONRecoEvent::MakeDumpTracks: Number of tracks is zero !" << endl;
156 cout << tracksPtr << endl;
158 cout << "AliMUONRecoEvent::MakeDumpTracks() : You should call SetRecoTracksPtr() first..." << endl;
162 Int_t noEvent = gAlice->GetHeader()->GetEvent();
163 tracksPtr->Compress(); // simple loop
164 AliMUONRecoTrack *currentTrack;
165 Int_t trackIndex = 0, nTrackHits = 0;
166 Double_t z,bendingSlope, nonBendingSlope, pYZ;
167 Double_t pX, pY, pZ; // reconstructed momentum components
168 Int_t isign; // charge sign
169 AliMUONTrack *track = 0;
170 AliMUONTrackParam *trackParam = 0;
171 // Fill event number and number of tracks
173 // Loop over reconstructed tracks
174 for (trackIndex=0; trackIndex<nTracks; trackIndex++) {
175 currentTrack = AddEmptyTrack();
176 track = (AliMUONTrack*) ((*tracksPtr)[trackIndex]);
177 nTrackHits = track->GetNTrackHits();
178 trackParam = track->GetTrackParamAtVertex();
179 bendingSlope = trackParam->GetBendingSlope();
180 nonBendingSlope = trackParam->GetNonBendingSlope();
181 z = trackParam->GetZ();
182 pYZ = 1/TMath::Abs(trackParam->GetInverseBendingMomentum());
183 pZ = pYZ/TMath::Sqrt(1+bendingSlope*bendingSlope);
184 pX = pZ * nonBendingSlope;
185 pY = pZ * bendingSlope;
186 if (trackParam->GetInverseBendingMomentum()<0) isign=-1; else isign=1;
187 currentTrack->SetVertexPos(z);
188 currentTrack->SetMomReconstr(pX,pY,pZ);
189 currentTrack->SetSign(isign);
190 // currentTrack->SetChi2r(trackParam->GetChi2());
191 currentTrack->SetChi2r(0);
192 AliMUONTrackHit *trackHit;
193 Double_t xhit,yhit,zhit;
194 // Loop over track hits
195 for (Int_t trackHitIndex = 0; trackHitIndex < nTrackHits; trackHitIndex++) {
196 trackHit = (AliMUONTrackHit*) (*(track->GetTrackHitsPtr()))[trackHitIndex];
197 xhit = trackHit->GetHitForRecPtr()->GetNonBendingCoor();
198 yhit = trackHit->GetHitForRecPtr()->GetBendingCoor();
199 zhit = trackHit->GetHitForRecPtr()->GetZ();
200 if (trackHitIndex >= 0 && trackHitIndex < 10) {
201 currentTrack->SetHitPosition(trackHitIndex,xhit,yhit,zhit);
202 } else { cout << "track " << trackIndex << " hit out of range" << endl;}
205 cout << "Leave MakeDumpTracks..." << endl;
209 //-------------------------------------------------------------------
210 void AliMUONRecoEvent::Streamer(TBuffer &R__b)
212 // Streams an object of class AliMUONRecoEvent
213 if (R__b.IsReading()) {
215 AliMUONRecoEvent::Class()->ReadBuffer(R__b, this);
217 cout << "...writing event to file...\n";
218 AliMUONRecoEvent::Class()->WriteBuffer(R__b, this);
222 //-------------------------------------------------------------------
223 AliMUONRecoTrack::AliMUONRecoTrack(Bool_t active)
225 //Constructor of AliMUONRecoTrack
230 for (Int_t axis=0; axis<3; axis++) {
233 for (Int_t chamber=0; chamber<10; chamber++) {
234 fPosX[chamber] = 0.0;
235 fPosY[chamber] = 0.0;
236 fPosZ[chamber] = 0.0;
241 //-------------------------------------------------------------------
242 const Double_t AliMUONRecoTrack::Phi()
244 // Return trach phi angle
245 return TMath::ATan2(fPr[2], fPr[1]);
248 //-------------------------------------------------------------------
249 const Double_t AliMUONRecoTrack::Theta()
251 // Return trach theta angle
252 return TMath::ACos(fPr[3] / P());
255 //-------------------------------------------------------------------
256 void AliMUONRecoTrack::SetMomReconstr(Double_t px, Double_t py, Double_t pz)
258 // Set the track reconstructed momentum
264 //-------------------------------------------------------------------
265 void AliMUONRecoTrack::SetHitPosition(Int_t chamber, Double_t x, Double_t y, Double_t z)
267 // Set hit coordinates in chamber[0..9]
272 //-------------------------------------------------------------------
273 void AliMUONRecoTrack::TrackInfo()
275 // Prints momentum info for this track
276 cout << "Px=" << GetMomReconstr(0) << " Py=" << GetMomReconstr(1) <<
277 " Pz=" << GetMomReconstr(2) << " P=" << P() << endl;