* provided "as is" without express or implied warranty. *
**************************************************************************/
-/* $Header$ */
-
-//----------------------------------------------------------------------
-// Class containing the kinematic information of tracks at various
-// points in the simulation to check the reconstruction
-// Origin: M.Ivanov
-//----------------------------------------------------------------------
#include "AliTrackReference.h"
+#include "TVirtualMC.h"
+#include "TParticle.h"
+#include "AliRun.h"
+#include "TLorentzVector.h"
+
+//
+// Track Reference object is created every time particle is
+// crossing detector bounds. The object is created by Step Manager
+//
+// The class stores the following informations:
+// track label,
+// track position: X,Y,X
+// track momentum px, py, pz
+// track length and time of fligth: both in cm
+// status bits from Monte Carlo
+//
+
ClassImp(AliTrackReference)
{
//
// Default constructor
+ // Creates empty object
+
+ for(Int_t i=0; i<16; i++) ResetBit(BIT(i));
+}
+
+//_______________________________________________________________________
+AliTrackReference::AliTrackReference(Int_t label) {
+ //
+ // Create Reference object out of label and
+ // data in TVirtualMC object
//
+ // Creates an object and fill all parameters
+ // from data in VirtualMC
+ //
+ // Sylwester Radomski, (S.Radomski@gsi.de)
+ // GSI, Jan 31, 2003
+ //
+
+ TLorentzVector vec;
+
+ fTrack = label;
+ fLength = gMC->TrackLength();
+ fTime = gMC->TrackTime();
+
+ gMC->TrackPosition(vec);
+
+ fX = vec[0];
+ fY = vec[1];
+ fZ = vec[2];
+
+ gMC->TrackMomentum(vec);
+
+ fPx = vec[0];
+ fPy = vec[1];
+ fPz = vec[2];
+
+ // Set Up status code
+ // Copy Bits from virtual MC
+
+ for(Int_t i=0; i<16; i++) ResetBit(BIT(i));
+
+ SetBit(BIT(0), gMC->IsNewTrack());
+ SetBit(BIT(1), gMC->IsTrackAlive());
+ SetBit(BIT(2), gMC->IsTrackDisappeared());
+ SetBit(BIT(3), gMC->IsTrackEntering());
+ SetBit(BIT(4), gMC->IsTrackExiting());
+ SetBit(BIT(5), gMC->IsTrackInside());
+ SetBit(BIT(6), gMC->IsTrackOut());
+ SetBit(BIT(7), gMC->IsTrackStop());
}
+//_______________________________________________________________________