New directory for the VMC tests (Ivana, Eva)
[u/mrichter/AliRoot.git] / TRD / qaRec / AliTRDalignmentTask.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-commercialf 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 ///////////////////////////////////////////////
17 // TRD alignment task
18 //
19 // Some documentation
20 //
21 // Authors :
22 //
23 ////////////////////////////////////////////////
24
25 #include "TTreeStream.h"
26 #include "TROOT.h"
27 #include "TH1.h"
28 #include "TH2.h"
29
30 #include "AliTrackPointArray.h"
31 #include "AliLog.h"
32
33 #include "AliTRDgeometry.h"
34 #include "AliTRDcluster.h"
35 #include "AliTRDseedV1.h"
36 #include "AliTRDtrackV1.h"
37
38 #include "AliTRDalignmentTask.h"
39
40 ClassImp(AliTRDalignmentTask)
41
42 //________________________________________________________
43 AliTRDalignmentTask::AliTRDalignmentTask()
44   :AliTRDrecoTask("Alignment", "TRD alignment")
45   ,fTree(0x0)
46   ,fArray(0x0)
47 {
48   InitFunctorList();
49   DefineOutput(1, TTree::Class());
50
51 }
52
53 //________________________________________________________
54 AliTRDalignmentTask::~AliTRDalignmentTask()
55 {
56   if (fArray) delete fArray;
57 }
58
59
60 //________________________________________________________
61 void AliTRDalignmentTask::CreateOutputObjects()
62 {
63   // spatial resolution
64   OpenFile(1, "RECREATE");
65
66   fTree = new TTree("spTree", "Tree with track space point arrays");
67   fTree->Branch("SP","AliTrackPointArray", &fArray);
68 }
69
70
71 //________________________________________________________
72 void AliTRDalignmentTask::Exec(Option_t *opt)
73 {
74 // Documentation to come
75
76   AliTRDrecoTask::Exec(opt);
77   PostData(1, fTree);
78 }
79
80
81 //________________________________________________________
82 TH1* AliTRDalignmentTask::PlotTrackPoints(const AliTRDtrackV1 *track)
83 {
84 // Documentation to come 
85
86   if(track) fkTrack = track;
87   if(!fkTrack){
88     AliWarning("No Track defined.");
89     return 0x0;
90   }
91
92   if (fArray) delete fArray;
93   fArray = new AliTrackPointArray(fkTrack->GetNumberOfTracklets());
94
95   // Filling the track points array
96   Float_t x, y, z;
97   AliTrackPoint p; Int_t ip = 0;
98   AliTRDseedV1 *tracklet = 0x0;
99   for(Int_t il=0; il<AliTRDgeometry::kNlayer; il++){
100     if(!(tracklet = fkTrack->GetTracklet(il))) continue;
101     if(!tracklet->IsOK()) continue;
102     tracklet->Fit(kTRUE);
103
104     x = tracklet->GetX0();
105     y = tracklet->GetYfit(0)-tracklet->GetYfit(1)*(tracklet->GetX0()-x);
106     z = tracklet->GetZfit(0);
107     p.SetXYZ(x,y,z);
108     fArray->AddPoint(ip++, &p);
109   }
110   fTree->Fill();
111
112 /*  if(fDebugLevel>=1){
113     Float_t yt = fRim.GetYat(x[il]);
114     (*fDebugStream) << "TrkltResiduals"
115       << "layer="  << il
116       << "x="      <<x[il]
117       << "y="      <<y[il]
118       << "yt="     <<yt
119       << "dydx="   << dydx[il]
120       << "dy="     << dy
121       << "\n";
122   }*/
123   return 0x0;
124 }
125
126
127
128 //________________________________________________________
129 Bool_t AliTRDalignmentTask::IsIdenticalWithOneOf(AliTrackPoint * const p, AliTrackPointArray *parray, int nmax) {
130
131   // Is the point p identical with one of the points on the list parray?
132   // This is a fix for aliroot 4-16-Rev-01 (and before) writing some 
133   // spurious unitialized points. 
134  
135   for (int i=0; i<parray->GetNPoints() && i<nmax; i++) {
136     AliTrackPoint pa;
137     parray->GetPoint(pa,i);
138     //printf("comparing %7.3f with %7.3f\n",p->GetY(),pa.GetY());
139     if (p->GetResidual(pa,0)<1e-8) return kTRUE;
140     //printf("different\n");
141   }
142   return kFALSE;
143 }