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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 | /* $Id$ */ | |
17 | ||
18 | /////////////////////////////////////////////////////// | |
19 | // | |
20 | // Reconstructed track hit | |
21 | // in | |
22 | // ALICE | |
23 | // dimuon | |
24 | // spectrometer | |
25 | // | |
26 | /////////////////////////////////////////////////////// | |
27 | ||
28 | #include "AliMUONTrackHit.h" | |
29 | #include "AliMUONHitForRec.h" | |
30 | #include "AliLog.h" | |
31 | ||
32 | ClassImp(AliMUONTrackHit) // Class implementation in ROOT context | |
33 | ||
34 | //__________________________________________________________________________ | |
35 | AliMUONTrackHit::AliMUONTrackHit() | |
36 | : TObject() | |
37 | { | |
38 | /// Default constructor | |
39 | ||
40 | fHitForRecPtr = 0; | |
41 | fNextTrackHitWithSameHitForRec = 0; | |
42 | fPrevTrackHitWithSameHitForRec = 0; | |
43 | } | |
44 | //__________________________________________________________________________ | |
45 | AliMUONTrackHit::AliMUONTrackHit (const AliMUONTrackHit& theMUONTrackHit) | |
46 | : TObject(theMUONTrackHit) | |
47 | { | |
48 | /// Copy constructor | |
49 | ||
50 | fTrackParam = theMUONTrackHit.fTrackParam; | |
51 | fHitForRecPtr = theMUONTrackHit.fHitForRecPtr; | |
52 | fNextTrackHitWithSameHitForRec = theMUONTrackHit.fNextTrackHitWithSameHitForRec; | |
53 | fPrevTrackHitWithSameHitForRec = theMUONTrackHit.fPrevTrackHitWithSameHitForRec; | |
54 | } | |
55 | //__________________________________________________________________________ | |
56 | AliMUONTrackHit & AliMUONTrackHit::operator=(const AliMUONTrackHit& theMUONTrackHit) | |
57 | { | |
58 | /// Assignment operator | |
59 | ||
60 | // check assignement to self | |
61 | if (this == &theMUONTrackHit) | |
62 | return *this; | |
63 | ||
64 | // base class assignement | |
65 | TObject::operator=(theMUONTrackHit); | |
66 | ||
67 | fTrackParam = theMUONTrackHit.fTrackParam; | |
68 | fHitForRecPtr = theMUONTrackHit.fHitForRecPtr; | |
69 | fNextTrackHitWithSameHitForRec = theMUONTrackHit.fNextTrackHitWithSameHitForRec; | |
70 | fPrevTrackHitWithSameHitForRec = theMUONTrackHit.fPrevTrackHitWithSameHitForRec; | |
71 | ||
72 | return *this; | |
73 | ||
74 | } | |
75 | //__________________________________________________________________________ | |
76 | AliMUONTrackHit::AliMUONTrackHit(AliMUONHitForRec* Hit) | |
77 | { | |
78 | /// Constructor from the HitForRec pointed to by "Hit" | |
79 | ||
80 | fHitForRecPtr = Hit; // pointer to HitForRec | |
81 | // links from/to HitForRec | |
82 | if (Hit->GetNTrackHits() == 0) { | |
83 | fPrevTrackHitWithSameHitForRec = NULL; | |
84 | Hit->SetFirstTrackHitPtr(this); | |
85 | } | |
86 | else { | |
87 | fPrevTrackHitWithSameHitForRec = Hit->GetLastTrackHitPtr(); | |
88 | fNextTrackHitWithSameHitForRec = NULL; | |
89 | } | |
90 | Hit->SetLastTrackHitPtr(this); | |
91 | fNextTrackHitWithSameHitForRec = NULL; | |
92 | Hit->SetNTrackHits(Hit->GetNTrackHits() + 1); | |
93 | } | |
94 | //__________________________________________________________________________ | |
95 | AliMUONTrackHit::~AliMUONTrackHit() | |
96 | { | |
97 | /// Destructor | |
98 | /// Update links between HitForRec's and TrackHit's | |
99 | /// connected to the current TrackHit being removed. | |
100 | ||
101 | AliMUONHitForRec *hit = fHitForRecPtr; // pointer to HitForRec | |
102 | // remove current TrackHit in HitForRec links | |
103 | if (this == hit->GetFirstTrackHitPtr()) | |
104 | hit->SetFirstTrackHitPtr(fNextTrackHitWithSameHitForRec); // if first | |
105 | if (this == hit->GetLastTrackHitPtr()) | |
106 | hit->SetLastTrackHitPtr(fPrevTrackHitWithSameHitForRec); // if last | |
107 | hit->SetNTrackHits(hit->GetNTrackHits() - 1); // decrement NTrackHits of hit | |
108 | // update link to next TrackHit of previous TrackHit | |
109 | if (fPrevTrackHitWithSameHitForRec != NULL) | |
110 | fPrevTrackHitWithSameHitForRec-> | |
111 | SetNextTrackHitWithSameHitForRec(fNextTrackHitWithSameHitForRec); | |
112 | // update link to previous TrackHit of next TrackHit | |
113 | if (fNextTrackHitWithSameHitForRec) | |
114 | fNextTrackHitWithSameHitForRec-> | |
115 | SetPrevTrackHitWithSameHitForRec(fPrevTrackHitWithSameHitForRec); | |
116 | // to be checked thoroughly !!!! | |
117 | // with Root counter of AliMUONTrackHit objects, | |
118 | // with loop over all these links after the update | |
119 | } | |
120 | ||
121 | //__________________________________________________________________________ | |
122 | Int_t AliMUONTrackHit::Compare(const TObject* TrackHit) const | |
123 | { | |
124 | /// "Compare" function to sort with decreasing Z (spectro. muon Z <0). | |
125 | /// Returns 1 (0, -1) if Z of current TrackHit | |
126 | /// is smaller than (equal to, larger than) Z of TrackHit | |
127 | ||
128 | if (fHitForRecPtr->GetZ() < | |
129 | ((AliMUONTrackHit*)TrackHit)->fHitForRecPtr->GetZ()) return(1); | |
130 | else if (fHitForRecPtr->GetZ() == | |
131 | ((AliMUONTrackHit*)TrackHit)->fHitForRecPtr->GetZ()) return( 0); | |
132 | else return(-1); | |
133 | } |