]> git.uio.no Git - u/mrichter/AliRoot.git/blob - ITS/AliITSVertexerTracksTest2.C
Removed warning from part of code not properly implimneted yet.
[u/mrichter/AliRoot.git] / ITS / AliITSVertexerTracksTest2.C
1 #if !defined(__CINT__) || defined(__MAKECINT__)
2 //-- --- standard headers------------- 
3 #include <Riostream.h>
4 //--------Root headers ---------------
5 #include <TSystem.h>
6 #include <TFile.h>
7 #include <TStopwatch.h>
8 #include <TObject.h>
9 #include <TTree.h>
10 //----- AliRoot headers ---------------
11 #include "alles.h"
12 #include "AliRun.h"
13 #include "AliMagF.h"
14 #include "AliKalmanTrack.h"
15 #include "AliITSVertex.h"
16 #include "AliITSVertexer.h"
17 #include "AliITSVertexerTracks.h"
18 #include <AliHeader.h>
19 #include <AliGenEventHeader.h>
20 //-------------------------------------
21 #endif
22 void AliITSVertexerTracksTest2(Int_t evFirst=0,Int_t evLast=0,
23                               const Char_t *galiceName="galice.root",
24                               const Char_t *trksName="AliITStracksV2.root",
25                               const Char_t *vtxName="AliITSVertices.root") {
26   /*******************************************************************
27    *                                                                 *
28    * Test macro for vertexing in pp using tracks.                    *
29    * Input file must contain trees with AliITStrackV2 objects.       *
30    * Output file can be the same file with the tracks                *
31    * or another file.                                                *
32    * If the file galice.root is available, B is taken from there,    *
33    * otherwise is can be set here "by hand".                         *
34    *                                                                 *
35    * Origin: A.Dainese, Padova  andrea.dainese@pd.infn.it            *
36    *******************************************************************/     
37
38   // Look for field value in galice.root
39   Double_t field = 0.4;
40   Int_t kDebug = 0;
41   TFile *galice = 0;
42   if(!gSystem->AccessPathName(galiceName,kFileExists)) {
43     galice = new TFile(galiceName);
44     gAlice = (AliRun*)galice->Get("gAlice");
45     AliMagF *fiel = (AliMagF*)gAlice->Field();
46     field=(Double_t)fiel->SolenoidField()/10.;
47     AliKalmanTrack::SetConvConst(100/0.299792458/field);
48     printf(" B = %3.1f read from gAlice and set\n",field);
49   } else {
50     printf(" File galice.root not found: default 0.4 T being used!\n");
51   }
52
53   // Open input and output files
54   TFile *inFile = TFile::Open(trksName);
55   TFile *outFile = TFile::Open(vtxName,"recreate");
56
57   // Create vertexer
58   AliITSVertexerTracks *vertexer = 
59     new AliITSVertexerTracks(inFile,outFile,field,0.,0.);
60   vertexer->SetDebug(0);
61   vertexer->SetUseThrustFrame(0);
62   vertexer->PrintStatus();
63
64   AliITSVertex *vert = 0;
65   // Find vertices
66
67   for(Int_t i=evFirst; i<=evLast; i++){
68     if(i%100==0)cout<<"processing event "<<i<<endl;
69     gAlice->GetEvent(i);
70     // The true Z coord. is fetched for comparison
71     AliHeader *header = gAlice->GetHeader();
72     AliGenEventHeader* genEventHeader = header->GenEventHeader();
73     TArrayF primaryVertex(3);
74     genEventHeader->PrimaryVertex(primaryVertex);
75     vert = vertexer->FindVertexForCurrentEvent(i);
76     if(kDebug>0){
77       // Prints the results
78       cout <<"========================================================\n";
79       cout << "Event number: "<<i<<")  Z Vertex:"<<endl;
80       if(vert){
81         cout<<"FOUND: "<<vert->GetZv()<<"; "<<vert->GetZRes()<<endl;
82         cout <<" True Z position "<<primaryVertex[2]<<endl;
83         cout<<", diff= "<<(primaryVertex[2]-vert->GetZv())*10000.<<endl;
84       }
85       else {
86         cout<<"NOT FOUND "<<endl;
87       }
88     }
89     if(vert){
90       Double_t pos[3];
91       for(Int_t kk=0;kk<3;kk++)pos[kk]=(Double_t)primaryVertex[kk];
92       vert->SetTruePos(pos);
93       vertexer->WriteCurrentVertex();
94     }
95   }
96
97   delete vertexer;
98
99
100
101   inFile->Close();
102   outFile->Close();
103   delete inFile;
104   delete outFile;
105   galice->Close();
106   delete galice;
107   return;
108 }