Path to ROOT and AliRoot libraries added (by F. Carminati)
[u/mrichter/AliRoot.git] / TOF / AliTOFHitMap.cxx
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5919c40c 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
1d9b3f6b 16/*
17$Log$
2f8510c7 18Revision 1.2 2001/11/22 11:30:30 hristov
19Correct log field
20
1d9b3f6b 21Revision 1.1 2001/11/22 11:22:51 hristov
22Updated version of TOF digitization, N^2 problem solved (J.Chudoba)
23
24*/
5919c40c 25
26////////////////////////////////////////////////////////////////////////
27//
28// AliTOFHitMap class
29//
30// hitmap enables fast check if the pad was already hit
31// The index of a AliTOFSDigit is saved in the each hitmap "cell"
32// (there is an offset +1, because the index can be zero and
33// zero means empty cell.
34// In TOF, number of strips varies according plate type, the highest
35// number is in plate C. For all plates is used this number, so
36// the size of the hitmap is a little bit greater than necessary, but
37// it simplifies the access algorithm.
38//
39//
40// Author: Jiri Chudoba (CERN), based on AliMUONHitMap
41//
42////////////////////////////////////////////////////////////////////////
43
44#include <iostream.h>
45#include <TMath.h>
46
47#include "AliTOFHitMap.h"
48#include "AliTOFSDigit.h"
49#include "AliTOFConstants.h"
50
51
52#include <TClonesArray.h>
53
54ClassImp(AliTOFHitMap)
55
56AliTOFHitMap::AliTOFHitMap()
57{
58//
59// Default ctor
60//
61 fHitMap = 0;
62 fSDigits = 0;
63}
64
65////////////////////////////////////////////////////////////////////////
66AliTOFHitMap::AliTOFHitMap(TClonesArray *dig)
67{
68//
69// ctor
70//
71
72// of course, these constants must not be hardwired
73// change later
74
75 fNSector = AliTOFConstants::fgkNSectors;
76 fNplate = AliTOFConstants::fgkNPlates;
77 fNstrip = AliTOFConstants::fgkNStripC;
78 fNpx = AliTOFConstants::fgkNpadX;
79 fNpy = AliTOFConstants::fgkNpadZ;
80 fMaxIndex=fNSector*fNplate*fNstrip*fNpx*fNpy;
81 fHitMap = new Int_t[fMaxIndex];
82 fSDigits = dig;
83 Clear();
84}
85
86////////////////////////////////////////////////////////////////////////
87AliTOFHitMap::AliTOFHitMap(const AliTOFHitMap & hitMap)
88{
89//
90// Dummy copy constructor
91//
92 ;
93}
94
95
96////////////////////////////////////////////////////////////////////////
97AliTOFHitMap::~AliTOFHitMap()
98{
99//
100// Destructor
101//
102 if (fHitMap) delete[] fHitMap;
103}
104
105////////////////////////////////////////////////////////////////////////
106void AliTOFHitMap::Clear(const char *)
107{
108//
109// Clear hitmap
110//
111 memset(fHitMap,0,sizeof(int)*fMaxIndex);
112}
113
114////////////////////////////////////////////////////////////////////////
115Int_t AliTOFHitMap::CheckedIndex(Int_t *vol) const
116{
117//
118// Return checked indices for vol
119//
120 Int_t index=
121 (vol[0]-1)*fNplate*fNstrip*fNpx*fNpy+ // sector
122 (vol[1]-1)*fNstrip*fNpx*fNpy+ // plate
123 (vol[2]-1)*fNpx*fNpy+ // strip
124 (vol[3]-1)*fNpy+ // padx
125 (vol[4]-1); // pady (=padz)
126
127 if (index >= fMaxIndex) {
128 Error("AliTOFHitMap","CheckedIndex - input outside bounds");
129 return -1;
130 } else {
131 return index;
132 }
133}
134
135////////////////////////////////////////////////////////////////////////
136void AliTOFHitMap::SetHit(Int_t *vol, Int_t idigit)
137{
138//
139// Assign digit to pad vol
140//
141
142// 0 means empty pad, we need to shift indeces by 1
143 fHitMap[CheckedIndex(vol)]=idigit+1;
144}
145
146////////////////////////////////////////////////////////////////////////
147void AliTOFHitMap::SetHit(Int_t *vol)
148{
149//
150// Assign last digit to pad vol
151//
152
153// 0 means empty pad, we need to shift indeces by 1
154 fHitMap[CheckedIndex(vol)]=fSDigits->GetLast()+1;
155}
156
157////////////////////////////////////////////////////////////////////////
158Int_t AliTOFHitMap::GetHitIndex(Int_t *vol) const
159{
160//
161// Get contents of pad vol
162//
163
164// 0 means empty pad, we need to shift indeces by 1
165 return fHitMap[CheckedIndex(vol)]-1;
166}
167
168////////////////////////////////////////////////////////////////////////
169TObject* AliTOFHitMap::GetHit(Int_t *vol) const
170{
171//
172// Get pointer to object at vol
173// return 0 if vol out of bounds
2f8510c7 174 Int_t index=GetHitIndex(vol);
5919c40c 175 return (index <0) ? 0 : fSDigits->UncheckedAt(index);
176}
177
178////////////////////////////////////////////////////////////////////////
179FlagType AliTOFHitMap::TestHit(Int_t *vol) const
180{
181//
182// Check if hit cell is empty, used or unused
183//
184 Int_t inf=fHitMap[CheckedIndex(vol)];
185 if (inf < 0) {
186 return kUsed;
187 } else if (inf == 0) {
188 return kEmpty;
189 } else {
190 return kUnused;
191 }
192}
193
194////////////////////////////////////////////////////////////////////////
195AliTOFHitMap & AliTOFHitMap::operator = (const AliTOFHitMap & rhs)
196{
197// Dummy assignment operator
198 return *this;
199}
200
201
202
203
204