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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 | // Reconstructed space point class for set:ITS | |
20 | // Reconstructed points are expressed simultaneously in two different | |
21 | // reference frames, both differing from the global system. | |
22 | // The first is referred to the sensor (see AliITSsegmentation for the | |
23 | // definition) and each point is represented by two coordinates: fXloc and | |
24 | // fZloc. This system in the code is referred to as "local" | |
25 | // The second is used for tracking (V2, SA and MI versions) and the X axis | |
26 | // represents the radial coordinate (this system is, in the bending plane, | |
27 | // a rotated system w.r.t. the global reference system). | |
28 | // Each reaconstructed point is represented by two coordinates: fY and fZ, | |
29 | // inherited from AliCluster. This system in the code is referred to as | |
30 | // "trackingV2". | |
31 | /////////////////////////////////////////////////////////////////////////////// | |
32 | ||
33 | #include <TGeoMatrix.h> | |
34 | #include "AliITSRecPoint.h" | |
35 | #include "AliAlignObj.h" | |
36 | ||
37 | ClassImp(AliITSRecPoint) | |
38 | ||
39 | //_____________________________________________________________ | |
40 | AliITSRecPoint::AliITSRecPoint(): | |
41 | AliCluster(), | |
42 | fXloc(0), | |
43 | fZloc(0), | |
44 | fdEdX(0), | |
45 | fIndex(0), | |
46 | fQ(0), | |
47 | fLayer(0), | |
48 | fNz(0), | |
49 | fNy(0), | |
50 | fChargeRatio(0), | |
51 | fType(0), | |
52 | fDeltaProb(0), | |
53 | fDriftTime(0.), | |
54 | fDriftSide(0) | |
55 | { | |
56 | // default constructor | |
57 | } | |
58 | ||
59 | //________________________________________________________________________ | |
60 | AliITSRecPoint::AliITSRecPoint(Int_t *lab,Float_t *hit, Int_t *info, Bool_t local): | |
61 | AliCluster(AliGeomManager::LayerToVolUID((info[2]+AliGeomManager::kSPD1),lab[3]&0x3FF),hit,0,0,lab), | |
62 | fXloc(0), | |
63 | fZloc(0), | |
64 | fdEdX(0), | |
65 | fIndex(lab[3]), | |
66 | fQ(hit[4]), | |
67 | fLayer(info[2]), | |
68 | fNz(info[1]), | |
69 | fNy(info[0]), | |
70 | fChargeRatio(0), | |
71 | fType(0), | |
72 | fDeltaProb(0), | |
73 | fDriftTime(0.), | |
74 | fDriftSide(0) | |
75 | { | |
76 | //standard constructor used in AliITSClusterFinderV2 | |
77 | ||
78 | if (!local) { // Cluster V2 | |
79 | Double_t txyz[3] = {GetX(), GetY(), GetZ()}; | |
80 | Double_t lxyz[3] = {0, 0, 0}; | |
81 | GetTracking2LocalMatrix()->LocalToMaster(txyz,lxyz); | |
82 | fXloc = lxyz[0]; fZloc = lxyz[2]; | |
83 | if(fLayer==4) hit[5]=-hit[5]; | |
84 | if( (fLayer==4) || (fLayer==5) ) SetSigmaYZ(hit[5]); | |
85 | } | |
86 | else { | |
87 | switch (fLayer) { | |
88 | case 0: | |
89 | case 1: | |
90 | fdEdX = 0; | |
91 | break; | |
92 | case 2: | |
93 | case 3: | |
94 | fdEdX=fQ*1e-6; | |
95 | break; | |
96 | case 4: | |
97 | fdEdX=fQ*2.16; | |
98 | SetSigmaYZ(hit[5]); | |
99 | break; | |
100 | case 5: | |
101 | fdEdX=fQ*2.16; | |
102 | hit[5]=-hit[5]; | |
103 | SetSigmaYZ(hit[5]); | |
104 | break; | |
105 | default: | |
106 | AliError(Form("Wrong ITS layer %d (0 -> 5)",fLayer)); | |
107 | break; | |
108 | } | |
109 | fXloc = hit[0]; | |
110 | fZloc = hit[1]; | |
111 | Double_t lxyz[3] = {fXloc, 0, fZloc}; | |
112 | Double_t txyz[3] = {0, 0, 0}; | |
113 | GetTracking2LocalMatrix()->MasterToLocal(lxyz,txyz); | |
114 | ||
115 | SetX(0.); SetY(txyz[1]); SetZ(txyz[2]); | |
116 | ||
117 | } | |
118 | ||
119 | } | |
120 | ||
121 | //_______________________________________________________________________ | |
122 | AliITSRecPoint::AliITSRecPoint(const AliITSRecPoint& pt): | |
123 | AliCluster(pt), | |
124 | fXloc(pt.fXloc), | |
125 | fZloc(pt.fZloc), | |
126 | fdEdX(pt.fdEdX), | |
127 | fIndex(pt.fIndex), | |
128 | fQ(pt.fQ), | |
129 | fLayer(pt.fLayer), | |
130 | fNz(pt.fNz), | |
131 | fNy(pt.fNy), | |
132 | fChargeRatio(pt.fChargeRatio), | |
133 | fType(pt.fType), | |
134 | fDeltaProb(pt.fDeltaProb), | |
135 | fDriftTime(pt.fDriftTime), | |
136 | fDriftSide(pt.fDriftSide) | |
137 | { | |
138 | //Copy constructor | |
139 | ||
140 | } | |
141 | ||
142 | //______________________________________________________________________ | |
143 | AliITSRecPoint& AliITSRecPoint::operator=(const AliITSRecPoint& source){ | |
144 | // Assignment operator | |
145 | ||
146 | this->~AliITSRecPoint(); | |
147 | new(this) AliITSRecPoint(source); | |
148 | return *this; | |
149 | ||
150 | } | |
151 | ||
152 | //---------------------------------------------------------------------- | |
153 | void AliITSRecPoint::Print(ostream *os){ | |
154 | //////////////////////////////////////////////////////////////////////// | |
155 | // Standard output format for this class. | |
156 | //////////////////////////////////////////////////////////////////////// | |
157 | #if defined __GNUC__ | |
158 | #if __GNUC__ > 2 | |
159 | ios::fmtflags fmt; | |
160 | #else | |
161 | Int_t fmt; | |
162 | #endif | |
163 | #else | |
164 | #if defined __ICC || defined __ECC || defined __xlC__ | |
165 | ios::fmtflags fmt; | |
166 | #else | |
167 | Int_t fmt; | |
168 | #endif | |
169 | #endif | |
170 | ||
171 | fmt = os->setf(ios::fixed); // set fixed floating point output | |
172 | *os << GetLabel(0) << " " << GetLabel(1) << " " << GetLabel(2) << " "; | |
173 | fmt = os->setf(ios::scientific); // set scientific for dEdX. | |
174 | *os << GetX() <<" " << GetY() << " " << GetZ() << " " ; | |
175 | *os << GetSigmaY2() << " " << GetSigmaZ2() << " " << GetSigmaYZ() << " "; | |
176 | fmt = os->setf(ios::fixed); | |
177 | *os << GetVolumeId() << " "<< Misalign() /*fIsMisaligned*/ << " "; | |
178 | fmt = os->setf(ios::scientific); // set scientific for dEdX. | |
179 | *os << fXloc << " " << fZloc << " " << fdEdX << " "; | |
180 | fmt = os->setf(ios::fixed); // every fixed | |
181 | *os << fIndex <<" " << fQ << " "<<fLayer <<" "<<fNz<<" "<<fNy<<" "; | |
182 | *os << fChargeRatio<<" " << fType << " " << fDeltaProb << " " << fDriftTime<< " " << fDriftSide; | |
183 | os->flags(fmt); // reset back to old formating. | |
184 | return; | |
185 | } | |
186 | ||
187 | //---------------------------------------------------------------------- | |
188 | Int_t AliITSRecPoint::GetNpixels() const { | |
189 | // | |
190 | // returns the number of pixels used for the SPD clusters | |
191 | // | |
192 | ||
193 | if(fLayer > 1) return -1; | |
194 | else return fType; | |
195 | ||
196 | } | |
197 | ||
198 | //---------------------------------------------------------------------- | |
199 | Int_t AliITSRecPoint::GetSPDclusterType() const { | |
200 | // | |
201 | // returns an Int_t with encoded information on cluster size | |
202 | // type <= 16: cluster type identifier according to conventional numbering | |
203 | // type > 16: Npixels+1000*Ny+1000000*Nz | |
204 | // | |
205 | ||
206 | Int_t type = -1; | |
207 | if(fLayer > 1) return type; | |
208 | else { | |
209 | ||
210 | switch (fType) { | |
211 | case 1 : type = 1 ;break; | |
212 | case 2 : if(fNy == 2) type = 2; | |
213 | else type = 3; | |
214 | break; | |
215 | case 3 : if(fNy == 3) type = 4; | |
216 | else if(fNz == 3) type = 6; | |
217 | else type = 5; | |
218 | break; | |
219 | case 4 : if(fNz == 1) type = 7; | |
220 | else if(fNz == 2 && fNy == 2) type = 8; | |
221 | else if(fNy == 2 && fNz == 3) type = 11; | |
222 | else if(fNy == 3 && fNz == 2) type = 9; | |
223 | else type = 15; | |
224 | break; | |
225 | case 5 : if(fNy == 3 && fNz == 2) type = 10; | |
226 | if(fNy == 2 && fNz == 3 ) type = 12; | |
227 | if(fNy == 5) type = 16; | |
228 | else type = fType+1000*fNy+1000000*fNz; | |
229 | break; | |
230 | case 6 : if(fNy ==3 && fNz == 2) type = 13; | |
231 | if(fNy ==2 && fNz == 3) type = 14; | |
232 | else type = fType+1000*fNy+1000000*fNz; | |
233 | break; | |
234 | default: type = fType+1000*fNy+1000000*fNz; | |
235 | break; | |
236 | } | |
237 | ||
238 | return type; | |
239 | } | |
240 | } | |
241 | ||
242 | //---------------------------------------------------------------------- | |
243 | Int_t AliITSRecPoint::GetSDDclusterType() const { | |
244 | // returns an Int_t with encoded information on cluster size | |
245 | // Byte1 = fNz Byte0=fNy, other two bytes empty for extra information | |
246 | // max. allowed cluster size = 255 | |
247 | Int_t typ=(fNz&0xFF)<<8; | |
248 | typ+=fNy&0xFF; | |
249 | if(fDriftSide==1) typ+=1<<16; | |
250 | return typ; | |
251 | } | |
252 | //---------------------------------------------------------------------- | |
253 | void AliITSRecPoint::DecodeSDDclusterType(Int_t cluType, Int_t &cluSizAn, Int_t& cluSizTb, Int_t &drSide){ | |
254 | // Extract cluster sizes and drift side from cluster type | |
255 | cluSizTb=cluType&0xFF; | |
256 | cluSizAn=(cluType>>8)&0xFF; | |
257 | drSide=(cluType>>16); | |
258 | return; | |
259 | } | |
260 | //---------------------------------------------------------------------- | |
261 | Int_t AliITSRecPoint::GetSSDclusterType() const { | |
262 | // returns an Int_t with encoded information on cluster size | |
263 | // Byte1 = fNz Byte0=fNy, other two bytes empty for extra information | |
264 | // max. allowed cluster size = 255 | |
265 | Int_t typ=(fNz&0xFF)<<8; | |
266 | typ+=fNy&0xFF; | |
267 | return typ; | |
268 | } | |
269 | ||
270 | //---------------------------------------------------------------------- | |
271 | void AliITSRecPoint::Read(istream *is){ | |
272 | //////////////////////////////////////////////////////////////////////// | |
273 | // Standard input format for this class. | |
274 | //////////////////////////////////////////////////////////////////////// | |
275 | Bool_t mis; | |
276 | Int_t lab[4]; | |
277 | Float_t hit[6]; | |
278 | lab[3] = 0; // ?? | |
279 | *is >> lab[0] >> lab[1] >> lab[2]; | |
280 | SetLabel(lab[0],0); SetLabel(lab[1],1); SetLabel(lab[2],2); | |
281 | *is >> hit[0] >> hit[1] >> hit[2] >> hit[3] >> hit[4] >> hit[5]; | |
282 | SetX(hit[0]);SetY(hit[1]);SetZ(hit[2]);SetSigmaY2(hit[3]); | |
283 | SetSigmaZ2(hit[4]);//fSigmaYZ=hit[5]; | |
284 | *is >> lab[0] >> mis; | |
285 | SetVolumeId(lab[0]);// fIsMisalinged = mis; | |
286 | *is >> fXloc >> fZloc >> fdEdX; | |
287 | *is >> fIndex >> fQ >> fLayer >> fNz >> fNy >> fChargeRatio >> fType; | |
288 | *is >> fDeltaProb >> fDriftTime >> fDriftSide; | |
289 | ||
290 | return; | |
291 | } | |
292 | //---------------------------------------------------------------------- | |
293 | ostream &operator<<(ostream &os,AliITSRecPoint &p){ | |
294 | //////////////////////////////////////////////////////////////////////// | |
295 | // Standard output streaming function. | |
296 | //////////////////////////////////////////////////////////////////////// | |
297 | ||
298 | p.Print(&os); | |
299 | return os; | |
300 | } | |
301 | //---------------------------------------------------------------------- | |
302 | istream &operator>>(istream &is,AliITSRecPoint &r){ | |
303 | //////////////////////////////////////////////////////////////////////// | |
304 | // Standard input streaming function. | |
305 | //////////////////////////////////////////////////////////////////////// | |
306 | ||
307 | r.Read(&is); | |
308 | return is; | |
309 | } | |
310 | //---------------------------------------------------------------------- |