technial fix to suppress the warning
[u/mrichter/AliRoot.git] / ITS / AliITSMapA2.cxx
... / ...
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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#include <TH1.h>
17#include <TObjArray.h>
18
19#include "AliITSMapA2.h"
20#include "AliITSsegmentation.h"
21#include "AliITSdigit.h"
22
23////////////////////////////////////////////////////////////////////////
24// Map Class for ITS. Implementation A2. In this implementation, the //
25// 2 dimensional (iz,ix) map is filled with Double precision floating //
26// point values. Since this class is derived for AliITSMapA1 it also //
27// has all of the functionality of that class as well. For each //
28// cell a corresponding TObject, a hit, can also be stored. //
29// The detector geometry is accessed via the that detectors //
30// segmentation class and stored here for conveniance. //
31////////////////////////////////////////////////////////////////////////
32
33ClassImp(AliITSMapA2)
34
35//______________________________________________________________________
36AliITSMapA2::AliITSMapA2():
37fHitMapD(0),
38fMapThresholdD(0),
39fScaleSizeX(0),
40fScaleSizeZ(0){
41 // default constructor
42
43 fSegmentation = 0;
44 fNpz = 0;
45 fNpx = 0;
46 fMaxIndex = 0;
47 fObjects = 0;
48 fNobjects = 0;
49}
50//______________________________________________________________________
51AliITSMapA2::AliITSMapA2(AliITSsegmentation *seg):
52fHitMapD(0),
53fMapThresholdD(0),
54fScaleSizeX(1),
55fScaleSizeZ(1){
56 //constructor
57
58 fSegmentation = seg;
59 fNpz = fSegmentation->Npz();
60 fNpx = fSegmentation->Npx();
61 fMaxIndex = fNpz*fNpx+fNpx; // 2 halves of detector
62 fHitMapD = new Double_t[fMaxIndex+1];
63 fObjects = 0;
64 fNobjects = 0;
65 ClearMap();
66}
67//______________________________________________________________________
68AliITSMapA2::AliITSMapA2(AliITSsegmentation *seg,
69 Int_t scalesizeX, Int_t scalesizeZ):
70fHitMapD(0),
71fMapThresholdD(0),
72fScaleSizeX(scalesizeX),
73fScaleSizeZ(scalesizeZ){
74 //constructor
75
76 fSegmentation = seg;
77 fNpz = fScaleSizeZ*fSegmentation->Npz();
78 fNpx = fScaleSizeX*fSegmentation->Npx();
79 fMaxIndex = fNpz*fNpx+fNpx; // 2 halves of detector
80 fHitMapD = new Double_t[fMaxIndex+1];
81 fObjects = 0;
82 fNobjects = 0;
83 ClearMap();
84}
85//______________________________________________________________________
86AliITSMapA2::AliITSMapA2(AliITSsegmentation *seg, TObjArray *obj,
87 Double_t thresh):
88fHitMapD(0),
89fMapThresholdD(thresh),
90fScaleSizeX(1),
91fScaleSizeZ(1){
92 //constructor
93
94 fNobjects = 0;
95 fSegmentation = seg;
96 fNpz = fSegmentation->Npz();
97 fNpx = fSegmentation->Npx();
98 fMaxIndex = fNpz*fNpx+fNpx; // 2 halves of detector
99 fHitMapD = new Double_t[fMaxIndex+1];
100 fObjects = obj;
101 if (fObjects) fNobjects = fObjects->GetEntriesFast();
102 ClearMap();
103}
104//______________________________________________________________________
105AliITSMapA2::~AliITSMapA2(){
106 //destructor
107
108 if (fHitMapD) delete[] fHitMapD;
109}
110
111
112//______________________________________________________________________
113void AliITSMapA2::ClearMap(){
114 //clear array
115
116 memset(fHitMapD,0,sizeof(Double_t)*fMaxIndex);
117}
118//______________________________________________________________________
119void AliITSMapA2::FillMap(){
120 // fills signal map from digits - apply a threshold for signal
121
122 if (!fObjects) return;
123
124 Int_t ndigits = fObjects->GetEntriesFast();
125 if (!ndigits) return;
126
127 AliITSdigit *dig;
128 for (Int_t ndig=0; ndig<ndigits; ndig++) {
129 dig = (AliITSdigit*)fObjects->UncheckedAt(ndig);
130 Double_t signal = (Double_t)(dig->GetSignal());
131 if (signal > fMapThresholdD) SetHit(dig->GetCoord1(),dig->GetCoord2(),signal);
132 } // end for ndig
133}
134//______________________________________________________________________
135void AliITSMapA2::FlagHit(Int_t iz, Int_t ix){
136 //flag an entry
137
138 fHitMapD[CheckedIndex(iz, ix)]=
139 -1000.*TMath::Abs((Int_t)(fHitMapD[CheckedIndex(iz, ix)])+1.);
140}
141//______________________________________________________________________
142TObject* AliITSMapA2::GetHit(Int_t i, Int_t /* dummy */) const {
143 //return a pointer to the 1D histogram
144
145 if (fObjects) {
146 return fObjects->UncheckedAt(i);
147 } else return NULL;
148}
149//______________________________________________________________________
150Double_t AliITSMapA2::GetSignal(Int_t index) const {
151 //get signal in a cell
152
153 if (index<fMaxIndex) return (index <0) ? 0. : fHitMapD[index];
154 else return 0.;
155}
156//______________________________________________________________________
157FlagTypeITS AliITSMapA2::TestHit(Int_t iz, Int_t ix){
158 // check if the entry has already been flagged
159
160 if (CheckedIndex(iz, ix) < 0) return kEmptyITS;
161 Int_t inf=(Int_t)fHitMapD[CheckedIndex(iz, ix)];
162
163 if (inf <= -1000) {
164 return kUsedITS;
165 } else if (inf == 0) {
166 return kEmptyITS;
167 } else {
168 return kUnusedITS;
169 } // end if inf...
170}
171//______________________________________________________________________
172void AliITSMapA2::FillMapFromHist(){
173 // fills map from 1D histograms
174
175 if (!fObjects) return;
176
177 // an example
178 for( Int_t i=0; i<fNobjects; i++) {
179 TH1F *hist =(TH1F *)fObjects->UncheckedAt(i);
180 Int_t nsamples = hist->GetNbinsX();
181 for( Int_t j=0; j<nsamples; j++) {
182 Double_t signal = (Double_t)(hist->GetBinContent(j+1));
183 if (signal > fMapThresholdD) SetHit(i,j,signal);
184 } // end for j
185 } // end for i
186}
187//______________________________________________________________________
188void AliITSMapA2::FillHist(){
189 // fill 1D histograms from map
190
191 if (!fObjects || fScaleSizeX != 1) return;
192
193 // an example
194 for( Int_t i=0; i<fNobjects; i++) {
195 TH1F *hist =(TH1F *)fObjects->UncheckedAt(i);
196 for( Int_t j=0; j<fNpx; j++) {
197 Double_t signal=GetSignal(i,j);
198 if (signal > fMapThresholdD) hist->Fill((Float_t)j,signal);
199 } // end for j
200 } // end for i
201}
202//______________________________________________________________________
203void AliITSMapA2::ResetHist(){
204 // Reset histograms
205
206 if (!fObjects) return;
207
208 for( Int_t i=0; i<fNobjects; i++) {
209 if ((*fObjects)[i]) ((TH1F*)(*fObjects)[i])->Reset();
210 } // end for i
211}
212//______________________________________________________________________
213void AliITSMapA2::AddSignal(Int_t iz,Int_t ix,Double_t sig){
214 // Addes sig to cell iz. equivalent to the very common
215 // sig = fMapA2->GetSignal(iz,ix) + sig; fMapA2->SetHit(iz,ix,sig);
216
217
218 Int_t index=GetHitIndex(iz,ix);
219 if(index<0) return;
220 fHitMapD[CheckedIndex(iz, ix)] += sig;
221}