// that is the base for AliTPCtracker, AliITStrackerV2 and AliTRDtracker
// Origin: Iouri Belikov, CERN, Jouri.Belikov@cern.ch
//-------------------------------------------------------------------------
-
+#include <TClass.h>
#include <TMath.h>
#include "AliTracker.h"
#include "AliCluster.h"
#include "AliKalmanTrack.h"
-#include "AliRun.h"
-#include "AliMagF.h"
-
-extern AliRun* gAlice;
+Bool_t AliTracker::fgUniformField=kTRUE;
+Double_t AliTracker::fgBz=0.;
const AliMagF *AliTracker::fgkFieldMap=0;
ClassImp(AliTracker)
AliTracker::AliTracker():
- fEventN(0),
- fStoreBarrel(1),
fX(0),
fY(0),
fZ(0),
//--------------------------------------------------------------------
// The default constructor.
//--------------------------------------------------------------------
- AliMagF *field=gAlice->Field();
- if (field==0) Fatal("AliTracker()","Can't access the field map !");
- SetFieldMap(field);
+ if (!fgkFieldMap) AliWarning("Field map is not set. Call AliTracker::SetFieldMap before creating a tracker!");
}
-void AliTracker::SetFieldMap(const AliMagF* map) {
+void AliTracker::SetFieldMap(const AliMagF* map, Bool_t uni) {
//--------------------------------------------------------------------
//This passes the field map to the reconstruction.
//--------------------------------------------------------------------
- if (map==0) ::Fatal("SetFieldMap","Can't access the field map !");
- AliKalmanTrack::SetConvConst(1000/0.299792458/map->SolenoidField());
+ if (map==0) AliFatalClass("Can't access the field map !");
+
+ if (fgkFieldMap) {
+ AliWarningClass("The magnetic field map has been already set !");
+ return;
+ }
+
+ fgUniformField=uni;
fgkFieldMap=map;
+
+ //Float_t r[3]={0.,0.,0.},b[3]; map->Field(r,b);
+ //Double_t bz=-b[2];
+
+ Double_t bz=-map->SolenoidField();
+ fgBz=TMath::Sign(1e-13,bz) + bz;
+
}
//__________________________________________________________________________