1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
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8 * documentation strictly for non-commercial purposes is hereby granted *
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11 * appear in the supporting documentation. The authors make no claims *
12 * about the suitability of this software for any purpose. It is *
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14 **************************************************************************/
18 Revision 1.3 2001/12/19 09:33:32 hristov
21 Revision 1.2 2001/11/22 11:30:30 hristov
24 Revision 1.1 2001/11/22 11:22:51 hristov
25 Updated version of TOF digitization, N^2 problem solved (J.Chudoba)
29 ////////////////////////////////////////////////////////////////////////
33 // hitmap enables fast check if the pad was already hit
34 // The index of a AliTOFSDigit is saved in the each hitmap "cell"
35 // (there is an offset +1, because the index can be zero and
36 // zero means empty cell.
37 // In TOF, number of strips varies according plate type, the highest
38 // number is in plate C. For all plates is used this number, so
39 // the size of the hitmap is a little bit greater than necessary, but
40 // it simplifies the access algorithm.
43 // Author: Jiri Chudoba (CERN), based on AliMUONHitMap
45 ////////////////////////////////////////////////////////////////////////
50 #include "AliTOFHitMap.h"
51 #include "AliTOFSDigit.h"
52 #include "AliTOFConstants.h"
55 #include <TClonesArray.h>
57 ClassImp(AliTOFHitMap)
59 AliTOFHitMap::AliTOFHitMap()
68 ////////////////////////////////////////////////////////////////////////
69 AliTOFHitMap::AliTOFHitMap(TClonesArray *dig)
75 // of course, these constants must not be hardwired
78 fNSector = AliTOFConstants::fgkNSectors;
79 fNplate = AliTOFConstants::fgkNPlates;
80 fNstrip = AliTOFConstants::fgkNStripC;
81 fNpx = AliTOFConstants::fgkNpadX;
82 fNpy = AliTOFConstants::fgkNpadZ;
83 fMaxIndex=fNSector*fNplate*fNstrip*fNpx*fNpy;
84 fHitMap = new Int_t[fMaxIndex];
89 ////////////////////////////////////////////////////////////////////////
90 AliTOFHitMap::AliTOFHitMap(const AliTOFHitMap & hitMap)
93 // Dummy copy constructor
99 ////////////////////////////////////////////////////////////////////////
100 AliTOFHitMap::~AliTOFHitMap()
105 if (fHitMap) delete[] fHitMap;
108 ////////////////////////////////////////////////////////////////////////
109 void AliTOFHitMap::Clear(const char *)
114 memset(fHitMap,0,sizeof(int)*fMaxIndex);
117 ////////////////////////////////////////////////////////////////////////
118 Int_t AliTOFHitMap::CheckedIndex(Int_t *vol) const
121 // Return checked indices for vol
124 (vol[0]-1)*fNplate*fNstrip*fNpx*fNpy+ // sector
125 (vol[1]-1)*fNstrip*fNpx*fNpy+ // plate
126 (vol[2]-1)*fNpx*fNpy+ // strip
127 (vol[3]-1)*fNpy+ // padx
128 (vol[4]-1); // pady (=padz)
130 if (index >= fMaxIndex) {
131 Error("AliTOFHitMap","CheckedIndex - input outside bounds");
138 ////////////////////////////////////////////////////////////////////////
139 void AliTOFHitMap::SetHit(Int_t *vol, Int_t idigit)
142 // Assign digit to pad vol
145 // 0 means empty pad, we need to shift indeces by 1
146 fHitMap[CheckedIndex(vol)]=idigit+1;
149 ////////////////////////////////////////////////////////////////////////
150 void AliTOFHitMap::SetHit(Int_t *vol)
153 // Assign last digit to pad vol
156 // 0 means empty pad, we need to shift indeces by 1
157 fHitMap[CheckedIndex(vol)]=fSDigits->GetLast()+1;
160 ////////////////////////////////////////////////////////////////////////
161 Int_t AliTOFHitMap::GetHitIndex(Int_t *vol) const
164 // Get contents of pad vol
167 // 0 means empty pad, we need to shift indeces by 1
168 return fHitMap[CheckedIndex(vol)]-1;
171 ////////////////////////////////////////////////////////////////////////
172 TObject* AliTOFHitMap::GetHit(Int_t *vol) const
175 // Get pointer to object at vol
176 // return 0 if vol out of bounds
177 Int_t index=GetHitIndex(vol);
178 return (index <0) ? 0 : fSDigits->UncheckedAt(index);
181 ////////////////////////////////////////////////////////////////////////
182 FlagType AliTOFHitMap::TestHit(Int_t *vol) const
185 // Check if hit cell is empty, used or unused
187 Int_t inf=fHitMap[CheckedIndex(vol)];
190 } else if (inf == 0) {
197 ////////////////////////////////////////////////////////////////////////
198 AliTOFHitMap & AliTOFHitMap::operator = (const AliTOFHitMap & rhs)
200 // Dummy assignment operator