- TrackReference related methods and data members moved from AliDetector to AliModule
[u/mrichter/AliRoot.git] / STEER / AliTrackReference.cxx
CommitLineData
aab9c8d5 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-commercial 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
116cbefd 16
aab9c8d5 17#include "AliTrackReference.h"
2cad796f 18#include "TVirtualMC.h"
2d74ba4f 19#include "TParticle.h"
20#include "AliRun.h"
21#include "TLorentzVector.h"
22
23//
24// Track Reference object is created every time particle is
25// crossing detector bounds. The object is created by Step Manager
26//
27// The class stores the following informations:
28// track label,
29// track position: X,Y,X
30// track momentum px, py, pz
31// track length and time of fligth: both in cm
32// status bits from Monte Carlo
33//
34
aab9c8d5 35
36ClassImp(AliTrackReference)
37
e2afb3b6 38//_______________________________________________________________________
39 AliTrackReference::AliTrackReference():
40 fTrack(0),
41 fX(0),
42 fY(0),
43 fZ(0),
44 fPx(0),
45 fPy(0),
46 fPz(0),
47 fLength(0)
aab9c8d5 48{
49 //
50 // Default constructor
2d74ba4f 51 // Creates empty object
52
53 for(Int_t i=0; i<16; i++) ResetBit(BIT(i));
54}
55
56//_______________________________________________________________________
2cad796f 57AliTrackReference::AliTrackReference(Int_t label) {
2d74ba4f 58 //
59 // Create Reference object out of label and
60 // data in TVirtualMC object
61 //
62 // Creates an object and fill all parameters
63 // from data in VirtualMC
aab9c8d5 64 //
2d74ba4f 65 // Sylwester Radomski, (S.Radomski@gsi.de)
66 // GSI, Jan 31, 2003
67 //
2cad796f 68
2d74ba4f 69 TLorentzVector vec;
70
71 fTrack = label;
2cad796f 72 fLength = gMC->TrackLength();
73 fTime = gMC->TrackTime();
2d74ba4f 74
2cad796f 75 gMC->TrackPosition(vec);
2d74ba4f 76
77 fX = vec[0];
78 fY = vec[1];
79 fZ = vec[2];
80
2cad796f 81 gMC->TrackMomentum(vec);
2d74ba4f 82
83 fPx = vec[0];
84 fPy = vec[1];
b745fc4c 85 fPz = vec[2];
2d74ba4f 86
87 // Set Up status code
88 // Copy Bits from virtual MC
89
90 for(Int_t i=0; i<16; i++) ResetBit(BIT(i));
91
2cad796f 92 SetBit(BIT(0), gMC->IsNewTrack());
93 SetBit(BIT(1), gMC->IsTrackAlive());
94 SetBit(BIT(2), gMC->IsTrackDisappeared());
95 SetBit(BIT(3), gMC->IsTrackEntering());
96 SetBit(BIT(4), gMC->IsTrackExiting());
97 SetBit(BIT(5), gMC->IsTrackInside());
98 SetBit(BIT(6), gMC->IsTrackOut());
99 SetBit(BIT(7), gMC->IsTrackStop());
aab9c8d5 100}
2d74ba4f 101//_______________________________________________________________________