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f641f6bd | 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 | ||
88cb7938 | 16 | /* $Id$ */ |
19364939 | 17 | |
f641f6bd | 18 | /////////////////////////////////////////////////////////////////////////////// |
19 | // // | |
20 | // Time Projection Chamber track hits object // | |
21 | // | |
22 | // Origin: Marian Ivanov , GSI Darmstadt | |
23 | // | |
24 | // AliTPCTrackHitsV2 | |
25 | // Container for Track Hits - based on standard TClonesArray - | |
26 | // fArray of AliTPCTrackHitsParamV2 | |
27 | // In AliTPCTrackHitsParamV2 - parameterization of the track segment is stored | |
28 | // for each of the track segment - relative position ( distance between hits) and | |
29 | // charge of the hits is stored - comparing to classical TClonesArray of AliTPChit - | |
30 | // comperssion factor of 5-7 (depending on the required precision) - | |
31 | // In future release AliTPCTrackHitsV2 - will replace old AliTPCTrackHits - which were not | |
32 | // based on standard ROOT containers | |
33 | // Basic function: | |
34 | // // during building Container | |
35 | // AddHitKartez(Int_t volumeID, Int_t trackID, Double_t x, Double_t y, Double_t z,Int_t q) | |
36 | // void SetHitPrecision(Double_t prec) {fPrecision=prec;} | |
37 | // void SetStepPrecision(Double_t prec) {fStep=prec;} | |
38 | // Bool_t FlushHitStack(Bool_t force=kTRUE); | |
39 | // //at the end necessary to have Container in consistent state | |
40 | // | |
41 | // // looping over Container | |
42 | // Bool_t First(), Bool_t Next() - iterators - return status of the operation | |
43 | // AliTPChit * GetHit(); - return current hit | |
44 | ||
45 | ||
46 | //Begin_Html | |
47 | /* | |
48 | <img src="gif/AliTPCTrackHitsV2.gif"> | |
49 | */ | |
50 | //End_Html | |
51 | // // | |
52 | // // | |
53 | /////////////////////////////////////////////////////////////////////////////// | |
018a927a | 54 | // |
f641f6bd | 55 | |
3010c308 | 56 | #include <TClonesArray.h> |
57 | #include <TMath.h> | |
58 | ||
f641f6bd | 59 | #include "AliTPCTrackHitsV2.h" |
f641f6bd | 60 | #include "AliTPC.h" |
61 | ||
f641f6bd | 62 | |
63 | ||
64 | ClassImp(AliTPCTrackHitsV2) | |
65 | ClassImp(AliTrackHitsParamV2) | |
66 | ||
67 | // | |
68 | Int_t AliTrackHitsParamV2::fgCounter1 =0; | |
69 | Int_t AliTrackHitsParamV2::fgCounter2 =0; | |
70 | // | |
71 | Int_t AliTPCTrackHitsV2::fgCounter1 =0; | |
72 | Int_t AliTPCTrackHitsV2::fgCounter2 =0; | |
73 | // | |
74 | const Double_t AliTPCTrackHitsV2::fgkPrecision=1e-6; //precision | |
75 | const Double_t AliTPCTrackHitsV2::fgkPrecision2=1e-20; //precision | |
e61fd20d | 76 | const Double_t AliTPCTrackHitsV2::fgkTimePrecision=20.e-9; //hit time precision |
f641f6bd | 77 | |
78 | ||
79 | ||
80 | ||
b9671574 | 81 | class AliTPCTempHitInfoV2 { |
82 | public: | |
f641f6bd | 83 | AliTPCTempHitInfoV2(); |
e61fd20d | 84 | void SetHit(Double_t r, Double_t z, Double_t fi, Int_t q, Float_t time); |
b9671574 | 85 | UInt_t GetStackIndex() const {return fStackIndex;} |
86 | void SetStackIndex(UInt_t i) {fStackIndex=i;} | |
87 | UInt_t GetParamIndex() const {return fParamIndex;} | |
88 | void SetParamIndex(UInt_t i) {fParamIndex=i;} | |
89 | Float_t GetTimeStack(Int_t i) const {return fTimeStack[i];} | |
90 | const Float_t* GetTimeStackP(Int_t i) const {return &fTimeStack[i];} | |
91 | UInt_t GetQStack(Int_t i) const {return fQStack[i];} | |
92 | const UInt_t* GetQStackP(Int_t i) const {return &fQStack[i];} | |
f641f6bd | 93 | Double_t * GetPosition(Int_t index){return &fPositionStack[index*3];} |
b9671574 | 94 | Double_t GetOldR() const {return fOldR;} |
95 | void SetOldR(Double_t r) {fOldR=r;} | |
96 | ||
97 | ||
98 | AliTrackHitsParamV2 * GetParam() const {return fParam;} | |
99 | void SetParam(AliTrackHitsParamV2 * p) {fParam=p;} | |
100 | void UpdateParam(Double_t maxdelta); //recal | |
101 | void NewParam(Double_t r, Double_t z, Double_t fi, Int_t q, Float_t time); | |
102 | enum {kStackSize = 10000}; | |
103 | ||
104 | protected: | |
105 | AliTPCTempHitInfoV2(const AliTPCTempHitInfoV2 &hit); | |
106 | AliTPCTempHitInfoV2& operator = (const AliTPCTempHitInfoV2 &hit); | |
f641f6bd | 107 | void Fit2(Double_t fSumY, Double_t fSumYX, Double_t fSumYX2, |
108 | Double_t fSumX, Double_t fSumX2, Double_t fSumX3, | |
109 | Double_t fSumX4, Int_t n, | |
110 | Double_t &a, Double_t &b, Double_t &c); | |
111 | void Fit(AliTrackHitsParamV2 * param); | |
53110b9d | 112 | Double_t fSumDr; // Sum of Dr |
113 | Double_t fSumDr2; // Square of sum of Dr | |
114 | Double_t fSumDr3; // Cube of sum of Dr | |
115 | Double_t fSumDr4; // Fourth power of sum of Dr | |
116 | Double_t fSumDFi; // Sum of DFi | |
117 | Double_t fSumDFiDr; // Sum of DFiDr | |
118 | Double_t fSumDFiDr2;// Sum of square of DFiDr | |
119 | Double_t fSumDZ; // Sum of DZ | |
120 | Double_t fSumDZDr; // Sum of DZDr | |
121 | Double_t fSumDZDr2; // Sum of square of DZDr | |
f641f6bd | 122 | Double_t fOldR; //previos r |
53110b9d | 123 | Double_t fPositionStack[3*kStackSize]; //position stack |
124 | UInt_t fQStack[kStackSize]; //Q stack | |
e61fd20d | 125 | Float_t fTimeStack[kStackSize]; //time stack |
f641f6bd | 126 | UInt_t fStackIndex; //current stack index |
127 | // UInt_t fInfoIndex; //current track info index | |
128 | UInt_t fParamIndex; //current track parameters index | |
129 | // AliTrackHitsInfo * fInfo; //current track info | |
130 | AliTrackHitsParamV2 * fParam; //current track param | |
131 | }; | |
132 | ||
133 | ||
134 | AliTPCTempHitInfoV2::AliTPCTempHitInfoV2() | |
179c6296 | 135 | :fSumDr(0.), |
136 | fSumDr2(0.), | |
137 | fSumDr3(0.), | |
138 | fSumDr4(0.), | |
139 | fSumDFi(0.), | |
140 | fSumDFiDr(0.), | |
141 | fSumDFiDr2(0.), | |
142 | fSumDZ(0.), | |
143 | fSumDZDr(0.), | |
144 | fSumDZDr2(0.), | |
145 | fOldR(0.), | |
146 | fStackIndex(0), | |
147 | fParamIndex(0), | |
148 | fParam(0) | |
f641f6bd | 149 | { |
150 | // | |
53110b9d | 151 | // Standard constructor |
152 | // set to default value | |
153 | // | |
f641f6bd | 154 | fSumDr=fSumDr2=fSumDr3=fSumDr4= |
155 | fSumDFi=fSumDFiDr=fSumDFiDr2= | |
156 | fSumDZ=fSumDZDr=fSumDZDr2=0; | |
157 | fStackIndex = 0; | |
158 | // fInfoIndex = 0; | |
159 | fParamIndex = 0; | |
160 | } | |
161 | ||
162 | ||
e61fd20d | 163 | void AliTPCTempHitInfoV2::NewParam(Double_t r, Double_t z, Double_t fi, Int_t q, Float_t time) |
f641f6bd | 164 | { |
165 | // | |
166 | //reset stack and sum parameters | |
167 | //store line initial point | |
53110b9d | 168 | // |
f641f6bd | 169 | fSumDr=fSumDr2=fSumDr3=fSumDr4= |
170 | fSumDFi=fSumDFiDr=fSumDFiDr2= | |
171 | fSumDZ=fSumDZDr=fSumDZDr2=0; | |
172 | fStackIndex=0; | |
b9671574 | 173 | fParam->SetR(r); |
f641f6bd | 174 | fOldR = r; |
b9671574 | 175 | fParam->SetZ(z); |
176 | fParam->SetFi(fi); | |
177 | fParam->SetAn(0.); | |
178 | fParam->SetAd(0.); | |
179 | fParam->SetTheta(0.); | |
180 | fParam->SetThetaD(0.); | |
e61fd20d | 181 | SetHit(r,z,fi,q,time); |
f641f6bd | 182 | } |
183 | ||
e61fd20d | 184 | void AliTPCTempHitInfoV2::SetHit(Double_t r, Double_t z, Double_t fi, Int_t q, Float_t time) |
f641f6bd | 185 | { |
186 | // | |
187 | //add hit to the stack | |
188 | //recalculate new estimete of line parameters | |
189 | Double_t *f = GetPosition(fStackIndex); | |
190 | f[0] = r; | |
191 | f[1] = z; | |
192 | f[2] = fi; | |
193 | fQStack[fStackIndex]=q; | |
e61fd20d | 194 | fTimeStack[fStackIndex]=time; |
f641f6bd | 195 | if (fStackIndex==0) return; |
b9671574 | 196 | Double_t dr = (r-fParam->GetR()); |
197 | if (TMath::Abs(dr)<AliTPCTrackHitsV2::GetKPrecision()) dr =AliTPCTrackHitsV2::GetKPrecision(); | |
198 | Double_t dfi = fi-fParam->GetFi(); | |
199 | Double_t dz = z -fParam->GetZ(); | |
f641f6bd | 200 | Double_t dr2 =dr*dr; |
201 | Double_t dr3 =dr2*dr; | |
202 | Double_t dr4 =dr3*dr; | |
203 | fSumDr +=dr; | |
204 | fSumDr2+=dr2; | |
205 | fSumDr3+=dr3; | |
206 | fSumDr4+=dr4; | |
207 | fSumDFi +=dfi; | |
208 | fSumDFiDr+=dfi*dr; | |
209 | fSumDFiDr2+=dfi*dr2; | |
210 | fSumDZ +=dz; | |
211 | fSumDZDr+=dz*dr; | |
212 | fSumDZDr2+=dz*dr2; | |
213 | ||
214 | //update fit parameters | |
215 | // | |
216 | Double_t det = fSumDr2*fSumDr4-fSumDr3*fSumDr3; | |
b9671574 | 217 | if (TMath::Abs(det)<AliTPCTrackHitsV2::GetKPrecision2()) return; |
f641f6bd | 218 | if ( ( fStackIndex>1 ) ){ |
b9671574 | 219 | fParam->SetAn((fSumDr4*fSumDFiDr-fSumDr3*fSumDFiDr2)/det); |
220 | fParam->SetAd((fSumDr2*fSumDFiDr2-fSumDr3*fSumDFiDr)/det); | |
f641f6bd | 221 | } |
222 | else | |
b9671574 | 223 | fParam->SetAn(fSumDFiDr/fSumDr2); |
f641f6bd | 224 | if ( ( fStackIndex>1 ) ){ |
b9671574 | 225 | fParam->SetTheta((fSumDr4*fSumDZDr-fSumDr3*fSumDZDr2)/det); |
226 | fParam->SetThetaD((fSumDr2*fSumDZDr2-fSumDr3*fSumDZDr)/det); | |
f641f6bd | 227 | } |
228 | else | |
b9671574 | 229 | fParam->SetTheta(fSumDZDr/fSumDr2); |
f641f6bd | 230 | } |
231 | ||
232 | ||
233 | void AliTPCTempHitInfoV2::UpdateParam(Double_t maxdelta) | |
234 | { | |
53110b9d | 235 | // |
236 | // recalc parameters not fixing origin point | |
237 | // | |
f641f6bd | 238 | if (fStackIndex>5){ |
239 | Double_t a,b,c; | |
240 | a=b=c=0; | |
241 | Fit2(fSumDFi, fSumDFiDr, fSumDFiDr2, fSumDr,fSumDr2,fSumDr3,fSumDr4, | |
242 | fStackIndex, a,b,c); | |
243 | if (TMath::Abs(a)<maxdelta){ | |
b9671574 | 244 | fParam->SetFi(fParam->GetFi()+a/fParam->GetR()); |
245 | fParam->SetAn(b); | |
246 | fParam->SetAd(c); | |
f641f6bd | 247 | } |
248 | Fit2(fSumDZ, fSumDZDr, fSumDZDr2, fSumDr,fSumDr2,fSumDr3,fSumDr4, | |
249 | fStackIndex, a,b,c) ; | |
250 | if (TMath::Abs(a)<maxdelta){ | |
b9671574 | 251 | fParam->SetZ(fParam->GetZ()+a); |
252 | fParam->SetTheta(b); | |
253 | fParam->SetThetaD(c); | |
f641f6bd | 254 | } |
255 | } | |
256 | ||
257 | } | |
53110b9d | 258 | |
f641f6bd | 259 | void AliTPCTempHitInfoV2::Fit2(Double_t fSumY, Double_t fSumYX, Double_t fSumYX2, |
260 | Double_t fSumX, Double_t fSumX2, Double_t fSumX3, | |
261 | Double_t fSumX4, Int_t n, | |
262 | Double_t &a, Double_t &b, Double_t &c) | |
263 | { | |
53110b9d | 264 | // |
265 | // fit of second order | |
266 | // | |
f641f6bd | 267 | Double_t det = |
268 | n* (fSumX2*fSumX4-fSumX3*fSumX3) - | |
269 | fSumX* (fSumX*fSumX4-fSumX3*fSumX2)+ | |
270 | fSumX2* (fSumX*fSumX3-fSumX2*fSumX2); | |
271 | ||
b9671574 | 272 | if (TMath::Abs(det)> AliTPCTrackHitsV2::GetKPrecision()) { |
f641f6bd | 273 | a = |
274 | (fSumY * (fSumX2*fSumX4-fSumX3*fSumX3)- | |
275 | fSumX *(fSumYX*fSumX4-fSumYX2*fSumX3)+ | |
276 | fSumX2*(fSumYX*fSumX3-fSumYX2*fSumX2))/det; | |
277 | b= | |
278 | (n*(fSumYX*fSumX4-fSumX3*fSumYX2)- | |
279 | fSumY*(fSumX*fSumX4-fSumX3*fSumX2)+ | |
280 | fSumX2*(fSumX*fSumYX2-fSumYX*fSumX2))/det; | |
281 | c= | |
282 | (n*(fSumX2*fSumYX2-fSumYX*fSumX3)- | |
283 | fSumX*(fSumX*fSumYX2-fSumYX*fSumX2)+ | |
284 | fSumY*(fSumX*fSumX3-fSumX2*fSumX2))/det; | |
285 | } | |
286 | } | |
287 | ||
288 | void AliTPCTempHitInfoV2::Fit(AliTrackHitsParamV2 * param) | |
289 | { | |
53110b9d | 290 | // |
f641f6bd | 291 | // fit fixing first and the last point |
53110b9d | 292 | // result stored in new param |
293 | // | |
b9671574 | 294 | Double_t dx2 = (GetPosition(fStackIndex))[0]-fParam->GetR(); |
f641f6bd | 295 | Double_t det = fSumDr4+dx2*fSumDr2-2*dx2*fSumDr3; |
b9671574 | 296 | if ( (TMath::Abs(det)> AliTPCTrackHitsV2::GetKPrecision()) && |
297 | ((TMath::Abs(dx2)> AliTPCTrackHitsV2::GetKPrecision()))){ | |
298 | Double_t dfi2 = (GetPosition(fStackIndex))[1]-fParam->GetFi(); | |
299 | param->SetAd((fSumDFiDr2+dfi2*fSumDr-dx2*fSumDFiDr-dfi2*fSumDr3/dx2)/det); | |
300 | param->SetAn((dfi2-param->GetAd()*dx2*dx2)/dx2); | |
f641f6bd | 301 | |
b9671574 | 302 | Double_t dz2 = (GetPosition(fStackIndex))[1]-fParam->GetZ(); |
303 | param->SetTheta((fSumDZDr2+dz2*fSumDr-dx2*fSumDZDr-dz2*fSumDr3/dx2)/det); | |
304 | param->SetTheta((dz2-param->GetAd()*dx2*dx2)/dx2); | |
f641f6bd | 305 | } |
306 | ||
307 | } | |
308 | ||
179c6296 | 309 | AliTrackHitsParamV2::AliTrackHitsParamV2():TObject(), |
310 | fTrackID(0), | |
311 | fVolumeID(0), | |
312 | fR(0.), | |
313 | fZ(0.), | |
314 | fFi(0.), | |
315 | fAn(0.), | |
316 | fAd(0.), | |
317 | fTheta(0.), | |
318 | fThetaD(0.), | |
319 | fNHits(0), | |
320 | fHitDistance(0), | |
321 | fCharge(0), | |
322 | fTime(0) | |
f641f6bd | 323 | { |
53110b9d | 324 | // |
325 | // default constructor | |
326 | // | |
f641f6bd | 327 | fgCounter1++; |
328 | fgCounter2++; | |
f641f6bd | 329 | } |
53110b9d | 330 | |
f641f6bd | 331 | AliTrackHitsParamV2::~AliTrackHitsParamV2() |
332 | { | |
53110b9d | 333 | // |
334 | // Standard destructor | |
335 | // | |
f641f6bd | 336 | fgCounter1--; |
337 | if (fHitDistance) { | |
338 | delete[]fHitDistance; | |
339 | fHitDistance=0; | |
340 | } | |
341 | if (fCharge){ | |
342 | delete[]fCharge; | |
343 | fCharge =0; | |
344 | } | |
e61fd20d | 345 | if (fTime){ |
346 | delete[]fTime; | |
347 | fTime =0; | |
348 | } | |
f641f6bd | 349 | } |
350 | ||
af05e6c8 | 351 | Float_t AliTrackHitsParamV2::Eta() const |
352 | { | |
353 | Float_t ctg = fZ / fR; | |
354 | Float_t eta = -TMath::Log(TMath::Hypot(1,ctg)-TMath::Abs(ctg)); | |
355 | if(ctg < 0) eta = -eta; | |
356 | return eta; | |
357 | } | |
358 | ||
f641f6bd | 359 | |
179c6296 | 360 | AliTPCTrackHitsV2::AliTPCTrackHitsV2():TObject(), |
361 | fArray(0), | |
362 | fSize(0), | |
363 | fPrecision(0.), | |
364 | fStep(0.), | |
365 | fMaxDistance(0), | |
366 | fNVolumes(0), | |
367 | fVolumes(0), | |
368 | fTempInfo(0), | |
369 | fCurrentHit(0), | |
370 | fHit(0) | |
f641f6bd | 371 | { |
372 | // | |
373 | //default constructor | |
374 | // | |
375 | const Float_t kHitPrecision=0.002; //default precision for hit position in cm | |
376 | const Float_t kStep =0.003; //30 mum step | |
377 | const UShort_t kMaxDistance =100; //maximum distance 100 | |
378 | ||
379 | fPrecision=kHitPrecision; //precision in cm | |
380 | fStep = kStep; //step size | |
381 | fMaxDistance = kMaxDistance; //maximum distance | |
179c6296 | 382 | |
f641f6bd | 383 | //fTrackHitsInfo = new AliObjectArray("AliTrackHitsInfo"); |
384 | //fTrackHitsParam = new AliObjectArray("AliTrackHitsParamV2"); | |
385 | //fHitsPosAndQ = new TArrayOfArrayVStack("AliHitInfo"); | |
386 | fArray = new TClonesArray("AliTrackHitsParamV2"); | |
387 | fCurrentHit = new AliTPCCurrentHitV2; | |
f641f6bd | 388 | fgCounter1++; |
389 | fgCounter2++; | |
390 | ||
391 | } | |
392 | ||
393 | AliTPCTrackHitsV2::~AliTPCTrackHitsV2() | |
394 | { | |
395 | // | |
396 | //default destructor | |
397 | // | |
398 | // if (fTrackHitsInfo) delete fTrackHitsInfo; | |
399 | if (fArray) { | |
400 | delete fArray; | |
401 | fArray =0; | |
402 | } | |
403 | //if (fHitsPosAndQ) delete fHitsPosAndQ; | |
404 | if (fCurrentHit) delete fCurrentHit; | |
405 | if (fTempInfo) delete fTempInfo; | |
406 | if (fVolumes) { | |
407 | delete [] fVolumes; | |
408 | fVolumes =0; | |
409 | fNVolumes=0; | |
410 | } | |
fce0283f | 411 | if (fHit){ |
412 | delete fHit; | |
413 | fHit=0; | |
414 | } | |
f641f6bd | 415 | fgCounter1--; |
416 | } | |
417 | ||
5f6e636c | 418 | void AliTPCTrackHitsV2::Clear(Option_t * /*option*/) |
f641f6bd | 419 | { |
420 | // | |
53110b9d | 421 | // clear object |
422 | // | |
6e493dba | 423 | fSize = 0; |
f641f6bd | 424 | if (fArray){ |
425 | for (Int_t i=0;i<fArray->GetEntriesFast();i++){ | |
426 | AliTrackHitsParamV2 * par = (AliTrackHitsParamV2 *)fArray->UncheckedAt(i); | |
427 | par->~AliTrackHitsParamV2(); // delete object | |
428 | } | |
429 | fArray->Clear(); | |
430 | } | |
431 | if (fTempInfo){ | |
432 | delete fTempInfo; | |
fce0283f | 433 | delete fHit; |
434 | fHit =0; | |
f641f6bd | 435 | fTempInfo =0; |
436 | } | |
437 | if (fVolumes){ | |
438 | delete [] fVolumes; | |
439 | fVolumes=0; | |
440 | fNVolumes=0; | |
441 | } | |
442 | } | |
443 | ||
444 | ||
445 | void AliTPCTrackHitsV2::AddHitKartez(Int_t volumeID, Int_t trackID, Double_t x, | |
e61fd20d | 446 | Double_t y, Double_t z,Int_t q, Float_t time) |
f641f6bd | 447 | { |
448 | // | |
53110b9d | 449 | // add hit to the container - it add hit at the end - input in global coordinata |
450 | // | |
f641f6bd | 451 | Double_t r = TMath::Sqrt(x*x+y*y); |
452 | Double_t fi = TMath::ACos(x/r); | |
453 | if (y<0) fi*=-1.; | |
e61fd20d | 454 | AddHit(volumeID,trackID,r,z,fi,q,time); |
f641f6bd | 455 | } |
456 | ||
457 | ||
458 | void AliTPCTrackHitsV2::AddHit(Int_t volumeID, Int_t trackID, | |
e61fd20d | 459 | Double_t r, Double_t z, Double_t fi, Int_t q, Float_t time) |
f641f6bd | 460 | { |
53110b9d | 461 | // |
462 | // Adding one hit | |
f641f6bd | 463 | // |
464 | fSize++; | |
465 | Bool_t diff=kFALSE; | |
466 | if (!fTempInfo) { //initialisation of track - initialisation of parameters | |
467 | fTempInfo = new AliTPCTempHitInfoV2; | |
b9671574 | 468 | fTempInfo->SetParam(new((*fArray)[0]) AliTrackHitsParamV2); |
469 | fTempInfo->GetParam()->SetVolumeID(volumeID); | |
470 | fTempInfo->GetParam()->SetTrackID(trackID); | |
f641f6bd | 471 | AddVolume(volumeID); |
472 | // | |
b9671574 | 473 | fTempInfo->SetParamIndex(0); |
e61fd20d | 474 | fTempInfo->NewParam(r,z,fi,q,time); |
f641f6bd | 475 | return; |
476 | } | |
477 | ||
478 | // if new volume or new trackID | |
b9671574 | 479 | if ( (volumeID!=fTempInfo->GetParam()->GetVolumeID()) || |
480 | (trackID!=fTempInfo->GetParam()->GetTrackID())){ | |
481 | if (volumeID!=fTempInfo->GetParam()->GetVolumeID()) AddVolume(volumeID); | |
f641f6bd | 482 | diff=kTRUE; |
483 | FlushHitStack(kTRUE); | |
484 | ||
b9671574 | 485 | fTempInfo->SetParamIndex(fTempInfo->GetParamIndex()+1); |
486 | fTempInfo->SetParam(new((*fArray)[fTempInfo->GetParamIndex()]) AliTrackHitsParamV2); | |
487 | fTempInfo->GetParam()->SetVolumeID(volumeID); | |
488 | fTempInfo->GetParam()->SetTrackID(trackID); | |
e61fd20d | 489 | fTempInfo->NewParam(r,z,fi,q,time); |
f641f6bd | 490 | return; |
491 | } | |
492 | ||
493 | //calculate current fit precission to next point | |
b9671574 | 494 | AliTrackHitsParamV2 ¶m = *(fTempInfo->GetParam()); |
f641f6bd | 495 | Double_t dd=0; |
496 | Double_t dl=0; | |
497 | Double_t ratio=0; | |
498 | Double_t dr,dz,dfi,ddz,ddfi; | |
499 | Double_t drhit,ddl; | |
500 | dr=dz=dfi=ddz=ddfi=0; | |
b9671574 | 501 | drhit = r-fTempInfo->GetOldR(); |
f641f6bd | 502 | { |
503 | //Double_t dfi2 = param.fAn+2*param.fAd*(r-param.fR); | |
b9671574 | 504 | Double_t dfi2 = param.GetAn(); |
505 | dfi2*=dfi2*fTempInfo->GetOldR()*fTempInfo->GetOldR(); | |
f641f6bd | 506 | //Double_t ddz2 = param.fTheta+2*param.fThetaD*(r-param.fR); |
b9671574 | 507 | Double_t ddz2 = param.GetTheta(); |
f641f6bd | 508 | ddz2*=ddz2; |
509 | ratio = TMath::Sqrt(1.+ dfi2+ ddz2); | |
510 | } | |
c4a237ae | 511 | // |
512 | // dl = fStep * Short_t(TMath::Nint(drhit*ratio/fStep)); // MI change - range check | |
513 | dl = drhit*ratio/fStep; | |
514 | if (TMath::Abs(dl)>32765) dl =0; | |
515 | dl = fStep * Short_t(TMath::Nint(dl)); | |
516 | // | |
f641f6bd | 517 | ddl = dl - drhit*ratio; |
b9671574 | 518 | fTempInfo->SetOldR(fTempInfo->GetOldR()+dl/ratio); |
519 | ||
520 | if (fTempInfo->GetStackIndex()>2){ | |
521 | dr = r-param.GetR(); | |
522 | dz = z-param.GetZ(); | |
523 | dfi = fi-param.GetFi(); | |
524 | ddz = dr*param.GetTheta()+dr*dr*param.GetThetaD()-dz; | |
525 | ddfi= dr*param.GetAn()+dr*dr*param.GetAd()-dfi; | |
f641f6bd | 526 | dd = TMath::Sqrt(ddz*ddz+r*r*ddfi*ddfi+ddl*ddl); |
527 | // | |
528 | } | |
529 | //safety factor 1.25 | |
530 | if ( ( (dd*1.25>fPrecision) ) || | |
b9671574 | 531 | (fTempInfo->GetStackIndex()+4>fTempInfo->kStackSize) || |
f641f6bd | 532 | (TMath::Abs(dl/fStep)>fMaxDistance) ) |
533 | diff=kTRUE; | |
534 | else{ // if precision OK | |
b9671574 | 535 | fTempInfo->SetStackIndex(fTempInfo->GetStackIndex()+1); |
e61fd20d | 536 | fTempInfo->SetHit(r,z,fi,q,time); |
f641f6bd | 537 | return; |
538 | } | |
539 | ||
540 | ||
541 | //if parameter changed | |
542 | if (FlushHitStack(kFALSE)){ //if full buffer flushed | |
b9671574 | 543 | fTempInfo->SetParamIndex(fTempInfo->GetParamIndex()+1); |
544 | fTempInfo->SetParam(new((*fArray)[fTempInfo->GetParamIndex()]) AliTrackHitsParamV2); | |
545 | fTempInfo->GetParam()->SetVolumeID(volumeID); | |
546 | fTempInfo->GetParam()->SetTrackID(trackID); | |
e61fd20d | 547 | fTempInfo->NewParam(r,z,fi,q,time); |
f641f6bd | 548 | } |
549 | else{ | |
b9671574 | 550 | fTempInfo->SetStackIndex(fTempInfo->GetStackIndex()+1); |
e61fd20d | 551 | fTempInfo->SetHit(r,z,fi,q,time); |
f641f6bd | 552 | } |
553 | } | |
554 | ||
555 | Bool_t AliTPCTrackHitsV2::FlushHitStack(Bool_t force) | |
556 | { | |
557 | // | |
53110b9d | 558 | // write fHitsPosAndQ information from the stack to te arrays |
559 | // | |
f641f6bd | 560 | if (!fTempInfo) return kFALSE; |
561 | ||
b9671574 | 562 | AliTrackHitsParamV2 & param = *(fTempInfo->GetParam()); |
f641f6bd | 563 | //recalculate track parameter not fixing first point |
564 | fTempInfo->UpdateParam(fStep/4.); | |
565 | //fTempInfo->Fit(fTempInfo->fParam); //- fixing the first and the last point | |
566 | ||
b9671574 | 567 | Double_t oldr = param.GetR(); |
f641f6bd | 568 | UInt_t i; |
569 | Double_t dd; | |
b9671574 | 570 | param.SetNHits(fTempInfo->GetStackIndex()+1); |
571 | // if (param.fHitDistance) delete []param.fHitDistance; | |
572 | // if (param.fCharge) delete []param.fCharge; | |
573 | // if (param.fTime) delete []param.fTime; | |
574 | param.SetHitDistance(param.GetNHits()); | |
575 | param.SetCharge(param.GetNHits()); | |
576 | param.SetTime(param.GetNHits()); | |
f641f6bd | 577 | |
578 | ||
b9671574 | 579 | for (i=0; i <= fTempInfo->GetStackIndex(); i++){ |
f641f6bd | 580 | Double_t * position = fTempInfo->GetPosition(i); |
581 | Double_t dr = position[0]-oldr; | |
582 | Double_t ratio; | |
583 | { | |
584 | //Double_t dfi2 = param.fAn+2*param.fAd*(position[0]-param.fR); | |
b9671574 | 585 | Double_t dfi2 = param.GetAn(); |
f641f6bd | 586 | dfi2*=dfi2*oldr*oldr; |
587 | //Double_t ddz2 = param.fTheta+2*param.fThetaD*(position[0]-param.fR); | |
b9671574 | 588 | Double_t ddz2 = param.GetTheta(); |
f641f6bd | 589 | ddz2*=ddz2; |
590 | ratio = TMath::Sqrt(1.+ dfi2+ ddz2); | |
591 | } | |
592 | ||
595c3700 | 593 | // Double_t dl = fStep*(Short_t)TMath::Nint(dr*ratio/fStep); //MI change |
594 | Double_t dl = dr*ratio/fStep; | |
595 | if (TMath::Abs(dl)>32765) dl =0; | |
596 | dl = fStep * Short_t(TMath::Nint(dl)); | |
597 | ||
f641f6bd | 598 | dr = dl/ratio; |
599 | oldr+=dr; | |
600 | //calculate precission | |
b9671574 | 601 | AliTrackHitsParamV2 ¶m = *(fTempInfo->GetParam()); |
f641f6bd | 602 | //real deltas |
b9671574 | 603 | Double_t dr1= position[0]-param.GetR(); |
604 | Double_t dz = position[1]-param.GetZ(); | |
605 | Double_t dfi = position[2]-param.GetFi(); | |
f641f6bd | 606 | //extrapolated deltas |
b9671574 | 607 | Double_t dr2 = oldr-param.GetR(); |
f641f6bd | 608 | Double_t ddr = dr2-dr1; |
b9671574 | 609 | Double_t ddz = dr2*param.GetTheta()+dr2*dr2*param.GetThetaD()-dz; |
610 | Double_t ddfi= dr2*param.GetAn()+dr2*dr2*param.GetAd()-dfi; | |
f641f6bd | 611 | dd = TMath::Sqrt(ddz*ddz+oldr*oldr*ddfi*ddfi+ddr*ddr); |
612 | ||
613 | ||
614 | if ( (dd>fPrecision) ){ | |
615 | //if ( (dd<0) ){ | |
616 | if (i==0){ | |
b9671574 | 617 | param.SetAn(0); |
618 | param.SetAd(0); | |
619 | param.SetTheta(0); | |
620 | param.SetThetaD(0); | |
621 | Double_t ddz = dr2*param.GetTheta()+dr2*dr2*param.GetThetaD()-dz; | |
622 | Double_t ddfi= dr2*param.GetAn()+dr2*dr2*param.GetAd()-dfi; | |
f641f6bd | 623 | dl = 0; |
624 | dd = TMath::Sqrt(ddz*ddz+oldr*oldr*ddfi*ddfi+ddr*ddr); | |
625 | } | |
626 | else | |
627 | break; | |
628 | } | |
629 | ||
b9671574 | 630 | param.HitDistance(i)= Short_t(TMath::Nint(dl/fStep)); |
631 | param.Charge(i)= Short_t(fTempInfo->GetQStack(i)); | |
632 | param.Time(i)= Short_t(fTempInfo->GetTimeStack(i)/AliTPCTrackHitsV2::fgkTimePrecision); | |
f641f6bd | 633 | } |
634 | ||
b9671574 | 635 | if (i<=fTempInfo->GetStackIndex()){ //if previous iteration not succesfull |
636 | // Short_t * charge = new Short_t[i]; | |
637 | // Short_t * time = new Short_t[i]; | |
638 | // Short_t * hitDistance= new Short_t[i]; | |
639 | // memcpy(charge, param.fCharge,sizeof(Short_t)*i); | |
640 | // memcpy(time, param.fTime,sizeof(Short_t)*i); | |
641 | // memcpy(hitDistance, param.fHitDistance,sizeof(Short_t)*i); | |
642 | // delete [] param.fCharge; | |
643 | // delete [] param.fTime; | |
644 | // delete [] param.fHitDistance; | |
645 | param.SetNHits(i); | |
646 | param.ResizeCharge(i); | |
647 | param.ResizeTime(i); | |
648 | param.ResizeHitDistance(i); | |
f641f6bd | 649 | // |
b9671574 | 650 | Int_t volumeID = fTempInfo->GetParam()->GetVolumeID(); |
651 | Int_t trackID =fTempInfo->GetParam()->GetTrackID(); | |
652 | fTempInfo->SetParamIndex(fTempInfo->GetParamIndex()+1); | |
653 | fTempInfo->SetParam(new((*fArray)[fTempInfo->GetParamIndex()]) AliTrackHitsParamV2); | |
f641f6bd | 654 | Double_t * p = fTempInfo->GetPosition(i); |
b9671574 | 655 | UInt_t index2 = fTempInfo->GetStackIndex(); |
656 | fTempInfo->NewParam(p[0],p[1],p[2],fTempInfo->GetQStack(i),fTempInfo->GetTimeStack(i)); | |
657 | fTempInfo->GetParam()->SetVolumeID(volumeID); | |
658 | fTempInfo->GetParam()->SetTrackID(trackID); | |
f641f6bd | 659 | if (i+1<=index2) FlushHitStack2(i+1,index2); |
660 | ||
661 | if (force) return FlushHitStack(kTRUE); | |
662 | return kFALSE; | |
663 | } | |
664 | return kTRUE; | |
665 | } | |
666 | ||
667 | ||
668 | void AliTPCTrackHitsV2::FlushHitStack2(Int_t index1, Int_t index2) | |
669 | { | |
670 | // | |
671 | // second iteration flush stack | |
53110b9d | 672 | // call only for hits where first iteration were not succesfully interpolated |
673 | // | |
f641f6bd | 674 | Double_t * positionstack = new Double_t[3*(index2-index1+1)]; |
675 | UInt_t * qstack = new UInt_t[index2-index1+1]; | |
e61fd20d | 676 | Float_t * timestack = new Float_t[index2-index1+1]; |
b9671574 | 677 | memcpy(positionstack, fTempInfo->GetPosition(index1), |
f641f6bd | 678 | (3*(index2-index1+1))*sizeof(Double_t)); |
b9671574 | 679 | memcpy(qstack, fTempInfo->GetQStackP(index1),(index2-index1+1)*sizeof(UInt_t)); |
680 | memcpy(timestack, fTempInfo->GetTimeStackP(index1),(index2-index1+1)*sizeof(Float_t)); | |
f641f6bd | 681 | Double_t *p = positionstack; |
682 | for (Int_t j=0; j<=index2-index1;j++){ | |
b9671574 | 683 | fTempInfo->SetStackIndex(fTempInfo->GetStackIndex()+1); |
e61fd20d | 684 | fTempInfo->SetHit(p[3*j+0],p[3*j+1],p[3*j+2],qstack[j],timestack[j]); |
f641f6bd | 685 | } |
686 | delete []positionstack; | |
687 | delete []qstack; | |
e61fd20d | 688 | delete []timestack; |
f641f6bd | 689 | } |
690 | ||
691 | ||
692 | void AliTPCTrackHitsV2::AddVolume(Int_t volume) | |
693 | { | |
694 | // | |
695 | //add volumes to tthe list of volumes | |
53110b9d | 696 | // |
f641f6bd | 697 | Int_t * volumes = new Int_t[fNVolumes+1]; |
f55b9162 | 698 | if (fVolumes) memcpy(volumes,fVolumes,(fNVolumes)*sizeof(Int_t)); |
f641f6bd | 699 | volumes[fNVolumes]=volume; |
700 | fNVolumes++; | |
701 | if (fVolumes) delete []fVolumes; | |
702 | fVolumes = volumes; | |
703 | } | |
704 | ||
705 | ||
f641f6bd | 706 | Bool_t AliTPCTrackHitsV2::First() |
707 | { | |
708 | // | |
709 | //set Current hit for the first hit | |
710 | // | |
6e493dba | 711 | |
712 | if (fArray->GetSize()<=0) { | |
b9671574 | 713 | fCurrentHit->SetStatus(kFALSE); |
6e493dba | 714 | return kFALSE; |
715 | } | |
716 | ||
f641f6bd | 717 | AliTrackHitsParamV2 *param = (AliTrackHitsParamV2 *)fArray->At(0); |
fce0283f | 718 | if (!fHit) fHit = new AliTPChit; |
f641f6bd | 719 | if (!(param) ) { |
b9671574 | 720 | fCurrentHit->SetStatus(kFALSE); |
f641f6bd | 721 | return kFALSE; |
722 | } | |
723 | // | |
b9671574 | 724 | fCurrentHit->SetParamIndex(0); |
725 | fCurrentHit->SetStackIndex(0); | |
f641f6bd | 726 | // |
fce0283f | 727 | // |
b9671574 | 728 | ((AliTPChit*)fHit)->fSector = param->GetVolumeID(); |
729 | ((AliTPChit*)fHit)->SetTrack(param->GetTrackID()); | |
730 | ((AliTPChit*)fHit)->SetX(param->GetR()*TMath::Cos(param->GetFi())); | |
731 | ((AliTPChit*)fHit)->SetY(param->GetR()*TMath::Sin(param->GetFi())); | |
732 | ((AliTPChit*)fHit)->SetZ(param->GetZ()); | |
733 | ((AliTPChit*)fHit)->fQ = param->Charge(0); | |
734 | ((AliTPChit*)fHit)->fTime = (Float_t)(param->Time(0)*AliTPCTrackHitsV2::fgkTimePrecision); | |
fce0283f | 735 | /* |
736 | fCurrentHit->fHit.fSector = param->fVolumeID; | |
737 | fCurrentHit->fHit.SetTrack(param->fTrackID); | |
738 | fCurrentHit->fHit.SetX(param->fR*TMath::Cos(param->fFi)); | |
739 | fCurrentHit->fHit.SetY(param->fR*TMath::Sin(param->fFi)); | |
740 | fCurrentHit->fHit.SetZ(param->fZ); | |
741 | fCurrentHit->fHit.fQ = param->fCharge[0]; | |
e61fd20d | 742 | fCurrentHit->fHit.fTime = (Float_t)(param->fTime[0]*AliTPCTrackHitsV2::fgkTimePrecision); |
fce0283f | 743 | */ |
b9671574 | 744 | fCurrentHit->SetR(param->GetR()); |
f641f6bd | 745 | |
b9671574 | 746 | fCurrentHit->SetStatus(kTRUE); |
747 | return fCurrentHit->GetStatus(); | |
f641f6bd | 748 | } |
749 | ||
750 | Bool_t AliTPCTrackHitsV2::Next() | |
751 | { | |
752 | // | |
53110b9d | 753 | // Hit iterator |
754 | // | |
b9671574 | 755 | if (!(fCurrentHit->GetStatus())) |
f641f6bd | 756 | return kFALSE; |
757 | ||
b9671574 | 758 | fCurrentHit->SetStackIndex(fCurrentHit->GetStackIndex()+1); |
f641f6bd | 759 | |
b9671574 | 760 | AliTrackHitsParamV2 *param = (AliTrackHitsParamV2 *)fArray->At(fCurrentHit->GetParamIndex()); |
761 | if (fCurrentHit->GetStackIndex()>=param->GetNHits()){ | |
762 | fCurrentHit->SetParamIndex(fCurrentHit->GetParamIndex()+1); | |
763 | if (fCurrentHit->GetParamIndex()>=fArray->GetEntriesFast()){ | |
764 | fCurrentHit->SetStatus(kFALSE); | |
f641f6bd | 765 | return kFALSE; |
766 | } | |
b9671574 | 767 | param = (AliTrackHitsParamV2 *)fArray->At(fCurrentHit->GetParamIndex()); |
768 | fCurrentHit->SetStackIndex(0); | |
769 | fCurrentHit->SetR(param->GetR()); | |
f641f6bd | 770 | } |
771 | ||
772 | ||
773 | ||
774 | Double_t ratio; | |
775 | { | |
776 | // Double_t dfi2 = param->fAn+2*param->fAd*(fCurrentHit->fR-param->fR); | |
b9671574 | 777 | Double_t dfi2 = param->GetAn(); |
778 | dfi2*=dfi2*fCurrentHit->GetR()*fCurrentHit->GetR(); | |
f641f6bd | 779 | // Double_t ddz2 = param->fTheta+2*param->fThetaD*(fCurrentHit->fR-param->fR); |
b9671574 | 780 | Double_t ddz2 = param->GetTheta(); |
f641f6bd | 781 | ddz2*=ddz2; |
782 | ratio = TMath::Sqrt(1.+ dfi2+ ddz2); | |
783 | } | |
784 | ||
b9671574 | 785 | fCurrentHit->SetR(fCurrentHit->GetR()+fStep*param->HitDistance(fCurrentHit->GetStackIndex())/ratio); |
f641f6bd | 786 | |
b9671574 | 787 | Double_t dR = fCurrentHit->GetR() - param->GetR(); |
788 | Double_t fi = param->GetFi() + (param->GetAn()*dR+param->GetAd()*dR*dR); | |
789 | Double_t z = param->GetZ() + (param->GetTheta()*dR+param->GetThetaD()*dR*dR); | |
fce0283f | 790 | /* |
f641f6bd | 791 | fCurrentHit->fHit.fQ = param->fCharge[fCurrentHit->fStackIndex]; |
e61fd20d | 792 | fCurrentHit->fHit.fTime = (Float_t)(param->fTime[fCurrentHit->fStackIndex]*AliTPCTrackHitsV2::fgkTimePrecision); |
f641f6bd | 793 | fCurrentHit->fHit.SetX(fCurrentHit->fR*TMath::Cos(fi)); |
794 | fCurrentHit->fHit.SetY(fCurrentHit->fR*TMath::Sin(fi)); | |
795 | fCurrentHit->fHit.SetZ(z); | |
796 | fCurrentHit->fHit.fSector = param->fVolumeID; | |
797 | fCurrentHit->fHit.SetTrack(param->fTrackID); | |
fce0283f | 798 | */ |
b9671574 | 799 | ((AliTPChit*)fHit)->fQ = param->Charge(fCurrentHit->GetStackIndex()); |
800 | ((AliTPChit*)fHit)->fTime = (Float_t)(param->Time(fCurrentHit->GetStackIndex())*AliTPCTrackHitsV2::fgkTimePrecision); | |
801 | ((AliTPChit*)fHit)->SetX(fCurrentHit->GetR()*TMath::Cos(fi)); | |
802 | ((AliTPChit*)fHit)->SetY(fCurrentHit->GetR()*TMath::Sin(fi)); | |
fce0283f | 803 | ((AliTPChit*)fHit)->SetZ(z); |
b9671574 | 804 | ((AliTPChit*)fHit)->fSector = param->GetVolumeID(); |
805 | ((AliTPChit*)fHit)->SetTrack(param->GetTrackID()); | |
fce0283f | 806 | |
f641f6bd | 807 | return kTRUE; |
808 | } | |
809 | ||
53110b9d | 810 | AliHit * AliTPCTrackHitsV2::GetHit() const |
f641f6bd | 811 | { |
53110b9d | 812 | // |
813 | // Return one hit | |
f641f6bd | 814 | // |
b9671574 | 815 | return (fCurrentHit->GetStatus())? fHit:0; |
f641f6bd | 816 | //return &fCurrentHit->fHit; |
817 | ||
818 | } | |
819 | ||
820 | AliTrackHitsParamV2 * AliTPCTrackHitsV2::GetParam() | |
821 | { | |
53110b9d | 822 | // |
823 | // Return current parameters | |
824 | // | |
b9671574 | 825 | return (fCurrentHit->GetStatus())? |
826 | (AliTrackHitsParamV2 *)fArray->At(fCurrentHit->GetParamIndex()):0; | |
f641f6bd | 827 | } |
53110b9d | 828 |