New macro "MUONreco.C" for using the event reconstruction package in C++
[u/mrichter/AliRoot.git] / TPC / AliTPCParamCR.cxx
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cc80f89e 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$Log$
18Revision 1.1.4.2 2000/04/10 11:36:13 kowal2
19
20New Detector parameters handling class
21
22*/
23
24///////////////////////////////////////////////////////////////////////
25// Manager and of geomety classes for set: TPC //
26// //
27// !sectors are numbered from 0 //
28// !pad rows are numbered from 0 //
29//
30// 27.7. - AliTPCPaaramSr object for TPC
31// TPC with straight pad rows
32// Origin: Marian Ivanov, Uni. of Bratislava, ivanov@fmph.uniba.sk //
33// //
34///////////////////////////////////////////////////////////////////////
35
36
37#include <iostream.h>
38#include <TMath.h>
39#include <TObject.h>
40#include <AliTPCParamCR.h>
41
42
43
44ClassImp(AliTPCParamCR)
45const static Int_t kMaxRows=600;
46const static Float_t kEdgeSectorSpace = 2.5;
47
48AliTPCParamCR::AliTPCParamCR()
49{
50 //
51 //constructor set the default parameters
52 fInnerPRF=0;
53 fOuterPRF=0;
54 fTimeRF = 0;
55 fFacSigma = Float_t(2.);
56 SetDefault();
57 Update();
58}
59
60AliTPCParamCR::~AliTPCParamCR()
61{
62 //
63 //destructor destroy some dynmicaly alocated variables
64 if (fInnerPRF != 0) delete fInnerPRF;
65 if (fOuterPRF != 0) delete fOuterPRF;
66 if (fTimeRF != 0) delete fTimeRF;
67}
68
69void AliTPCParamCR::SetDefault()
70{
71 //set default TPC param
72 fbStatus = kFALSE;
73 AliTPCParam::SetDefault();
74}
75
76Int_t AliTPCParamCR::CalcResponse(Float_t* xyz, Int_t * index)
77{
78 //
79 //calculate bin response as function of the input position -x
80 //return number of valid response bin
81 //
82 //we suppose that coordinata is expressed in float digits
83 // it's mean coordinate system 8
84 //xyz[0] - float padrow xyz[1] is float pad (center pad is number 0) and xyz[2] is float time bin
85 if ( (fInnerPRF==0)||(fOuterPRF==0)||(fTimeRF==0) ){
86 Error("AliTPCParamCR", "response function were not adjusted");
87 return -1;
88 }
89
90 Float_t sfpadrow; // sigma of response function
91 Float_t sfpad; // sigma of
92 Float_t sftime= fFacSigma*fTimeRF->GetSigma()/fZWidth; //3 sigma of time response
93 if (index[1]<fNInnerSector){
94 sfpadrow =fFacSigma*fInnerPRF->GetSigmaY()/fInnerPadPitchLength;
95 sfpad =fFacSigma*fInnerPRF->GetSigmaX()/fInnerPadPitchWidth;
96 }else{
97 sfpadrow =fFacSigma*fOuterPRF->GetSigmaY()/fOuterPadPitchLength;
98 sfpad =fFacSigma*fOuterPRF->GetSigmaX()/fOuterPadPitchWidth;
99 }
100
101 Int_t fpadrow = TMath::Nint(xyz[0]-sfpadrow); //"first" padrow
102 Int_t fpad = TMath::Nint(xyz[1]-sfpad); //first pad
103 Int_t ftime = TMath::Nint(xyz[2]+fTimeRF->GetOffset()-sftime); // first time
104 Int_t lpadrow = TMath::Min(TMath::Nint(xyz[0]+sfpadrow),fpadrow+19); //"last" padrow
105 Int_t lpad = TMath::Min(TMath::Nint(xyz[1]+sfpad),fpad+19); //last pad
106 Int_t ltime = TMath::Min(TMath::Nint(xyz[2]+fTimeRF->GetOffset()+sftime),ftime+19); // last time
107
108 Float_t padres[20][20]; //I don't expect bigger number of bins
109 Float_t timeres[20];
110 //calculate padresponse function
111 Int_t padrow;
112 for (padrow = fpadrow;padrow<=lpadrow;padrow++)
113 for (Int_t pad = fpad;pad<=lpad;pad++){
114 Float_t dy = (xyz[0]-Float_t(padrow));
115 Float_t dx = (xyz[1]-Float_t(pad));
116 if (index[1]<fNInnerSector)
117 padres[padrow-fpadrow][pad-fpad]=fInnerPRF->GetPRF(dx*fInnerPadPitchWidth,dy*fInnerPadPitchLength);
118 else
119 padres[padrow-fpadrow][pad-fpad]=fOuterPRF->GetPRF(dx*fOuterPadPitchWidth,dy*fOuterPadPitchLength);
120 }
121 //calculate time response function
122
123 Int_t time;
124 for (time = ftime;time<=ltime;time++) timeres[time-ftime]= fTimeRF->GetRF((xyz[2]-Float_t(time))*fZWidth);
125
126 //write over threshold values to stack
127 Int_t cindex3=-1;
128 Int_t cindex=0;
129 Float_t cweight = 0;
130 for (padrow = fpadrow;padrow<=lpadrow;padrow++)
131 for (Int_t pad = fpad;pad<=lpad;pad++)
132 for (time = ftime;time<=ltime;time++){
133 cweight = timeres[time-ftime]*padres[padrow-fpadrow][pad-fpad];
134 if (cweight>fResponseThreshold) {
135 fResponseBin[++cindex3]=padrow;
136 fResponseBin[++cindex3]=pad;
137 fResponseBin[++cindex3]=time;
138 fResponseWeight[++cindex]=cweight;
139 }
140 }
141 fCurrentMax=cindex;
142 return fCurrentMax;
143}
144
145void AliTPCParamCR::CRXYZtoXYZ(Float_t *xyz,
146 const Int_t &sector, const Int_t & padrow, Int_t option) const
147{
148 //transform relative coordinates to absolute
149 Bool_t rel = ( (option&2)!=0);
150 Int_t index[2]={sector,padrow};
151 if (rel==kTRUE) Transform4to3(xyz,index);//if the position is relative to pad row
152 Transform2to1(xyz,index);
153}
154
155void AliTPCParamCR::XYZtoCRXYZ(Float_t *xyz,
156 Int_t &sector, Int_t & padrow, Int_t option) const
157{
158 //transform global position to the position relative to the sector padrow
159 //if option=0 X calculate absolute calculate sector
160 //if option=1 X absolute use input sector
161 //if option=2 X relative to pad row calculate sector
162 //if option=3 X relative use input sector
163 //!!!!!!!!! WE start to calculate rows from row = 0
164 Int_t index[2];
165 Bool_t rel = ( (option&2)!=0);
166
167 //option 0 and 2 means that we don't have information about sector
168 if ((option&1)==0) Transform0to1(xyz,index); //we calculate sector number
169 else
170 index[0]=sector;
171 Transform1to2(xyz,index);
172 Transform2to3(xyz,index);
173 //if we store relative position calculate position relative to pad row
174 if (rel==kTRUE) Transform3to4(xyz,index);
175 sector = index[0];
176 padrow = index[1];
177}
178
179
180
181Bool_t AliTPCParamCR::Update()
182{
183
184 //
185 // update some calculated parameter which must be updated after changing "base"
186 // parameters
187 // for example we can change size of pads and according this recalculate number
188 // of pad rows, number of of pads in given row ....
189 Int_t i;
190 if (AliTPCParam::Update()==kFALSE) return kFALSE;
191 fbStatus = kFALSE;
192
193 // adjust lower sectors pad row positions and pad numbers
194 fNRowLow = (Int_t(1.0001*(fRInnerLastWire-fRInnerFirstWire)/fInnerWWPitch)
195 -2*fInnerDummyWire)/fNInnerWiresPerPad;
196 if ( kMaxRows<fNRowLow) fNRowUp = kMaxRows;
197 if (1>fNRowLow) return kFALSE;
198 Float_t firstpad = fRInnerFirstWire+(fInnerDummyWire-0.5)*fInnerWWPitch
199 +fInnerPadPitchLength/2.;
200
201 for (i = 0;i<fNRowLow;i++)
202 {
203 Float_t x = firstpad +fInnerPadPitchLength*(Float_t)i;
204 Float_t y = (x-0.5*fInnerPadPitchLength)*tan(fInnerAngle/2.)-fInnerFrameSpace-
205 fInnerPadPitchWidth/2.;
206 fPadRowLow[i] = x;
207 fNPadsLow[i] = 1+2*(Int_t)(y/fInnerPadPitchWidth) ;
208 }
209
210 // adjust upper sectors pad row positions and pad numbers
211 fNRowUp = (Int_t((fROuterLastWire-fROuterFirstWire+0.001)/fOuterWWPitch)
212 -2*fOuterDummyWire)/fNOuterWiresPerPad;
213 if ( kMaxRows<fNRowUp) fNRowUp = kMaxRows;
214 if (1>fNRowUp) return kFALSE;
215 firstpad = fROuterFirstWire+(fOuterDummyWire-0.5)*fOuterWWPitch
216 +fOuterPadPitchLength/2.;
217
218 for (i = 0;i<fNRowUp;i++)
219 {
220 Float_t x = firstpad + fOuterPadPitchLength*(Float_t)i;
221 Float_t y = (x-0.5*fOuterPadPitchLength)*tan(fOuterAngle/2.)-fOuterFrameSpace-
222 fInnerPadPitchWidth/2.;
223 fPadRowUp[i] = x;
224 fNPadsUp[i] = 1+2*(Int_t)(y/fOuterPadPitchWidth) ;
225 }
226 fNtRows = fNInnerSector*fNRowLow+fNOuterSector*fNRowUp;
227 return kTRUE;
228}
229
230
231
232void AliTPCParamCR::Streamer(TBuffer &R__b)
233{
234 // Stream an object of class AliTPC.
235
236 if (R__b.IsReading()) {
237 Version_t R__v = R__b.ReadVersion(); if (R__v) { }
238 // TObject::Streamer(R__b);
239 AliTPCParam::Streamer(R__b);
240 // if (R__v < 2) return;
241 Update();
242 } else {
243 R__b.WriteVersion(AliTPCParamCR::IsA());
244 //TObject::Streamer(R__b);
245 AliTPCParam::Streamer(R__b);
246 }
247}
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