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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 | ||
16 | ||
17 | #include "AliTrackReference.h" | |
18 | #include "TVirtualMC.h" | |
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 | ||
35 | ||
36 | ClassImp(AliTrackReference) | |
37 | ||
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) | |
48 | { | |
49 | // | |
50 | // Default constructor | |
51 | // Creates empty object | |
52 | ||
53 | for(Int_t i=0; i<16; i++) ResetBit(BIT(i)); | |
54 | } | |
55 | ||
56 | //_______________________________________________________________________ | |
57 | AliTrackReference::AliTrackReference(Int_t label) { | |
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 | |
64 | // | |
65 | // Sylwester Radomski, (S.Radomski@gsi.de) | |
66 | // GSI, Jan 31, 2003 | |
67 | // | |
68 | ||
69 | TLorentzVector vec; | |
70 | ||
71 | fTrack = label; | |
72 | fLength = gMC->TrackLength(); | |
73 | fTime = gMC->TrackTime(); | |
74 | ||
75 | gMC->TrackPosition(vec); | |
76 | ||
77 | fX = vec[0]; | |
78 | fY = vec[1]; | |
79 | fZ = vec[2]; | |
80 | ||
81 | gMC->TrackMomentum(vec); | |
82 | ||
83 | fPx = vec[0]; | |
84 | fPy = vec[1]; | |
85 | fPz = vec[2]; | |
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 | ||
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()); | |
100 | } | |
101 | //_______________________________________________________________________ |