Including Rtypes.h (Sun)

[u/mrichter/AliRoot.git] / STEER / AliTrackReference.cxx

diff --git a/STEER/AliTrackReference.cxx b/STEER/AliTrackReference.cxx
index 979b80d1cff25edd91c31a9a44fac0c3d5f34b1c..3c8c3342028ec01e30e3caa0aa597803b0a8a1ff 100644 (file)
--- a/STEER/AliTrackReference.cxx
+++ b/STEER/AliTrackReference.cxx
@@ -13,16 +13,31 @@
  * provided "as is" without express or implied warranty.                  *
  **************************************************************************/
 
-/* $Header$ */
+/* $Id$ */
+
+#include "TVirtualMC.h"
 
-#include "AliTrackReference.h"
-#include "TParticle.h"
 #include "AliRun.h"
+#include "AliTrackReference.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)
 
 //_______________________________________________________________________
  AliTrackReference::AliTrackReference():
+   TObject(),
    fTrack(0),
    fX(0),
    fY(0),
@@ -30,9 +45,66 @@ ClassImp(AliTrackReference)
    fPx(0),
    fPy(0),
    fPz(0),
-   fLength(0)
+   fLength(0),
+   fTime(0)
 {
   //
   // Default constructor
+  // Creates empty object
+
+  for(Int_t i=0; i<16; i++) ResetBit(BIT(i));
+}
+
+//_______________________________________________________________________
+AliTrackReference::AliTrackReference(Int_t label) :
+  TObject(),
+  fTrack(label),
+  fX(0),
+  fY(0),
+  fZ(0),
+  fPx(0),
+  fPy(0),
+  fPz(0),
+  fLength(gMC->TrackLength()),
+  fTime(gMC->TrackTime())
+{
+  //
+  // 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
+  //
+    
+  Double_t vec[4];
+  
+  gMC->TrackPosition(vec[0],vec[1],vec[2]);
+
+  fX = vec[0];
+  fY = vec[1];
+  fZ = vec[2];
+  
+  gMC->TrackMomentum(vec[0],vec[1],vec[2],vec[3]);
+  
+  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()); 
 }
+//_______________________________________________________________________