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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 | |
f641f6bd | 56 | #include "AliTPCTrackHitsV2.h" |
f641f6bd | 57 | #include "TClonesArray.h" |
58 | #include "AliTPC.h" | |
59 | ||
f641f6bd | 60 | |
61 | ||
62 | ClassImp(AliTPCTrackHitsV2) | |
63 | ClassImp(AliTrackHitsParamV2) | |
64 | ||
65 | // | |
66 | Int_t AliTrackHitsParamV2::fgCounter1 =0; | |
67 | Int_t AliTrackHitsParamV2::fgCounter2 =0; | |
68 | // | |
69 | Int_t AliTPCTrackHitsV2::fgCounter1 =0; | |
70 | Int_t AliTPCTrackHitsV2::fgCounter2 =0; | |
71 | // | |
72 | const Double_t AliTPCTrackHitsV2::fgkPrecision=1e-6; //precision | |
73 | const Double_t AliTPCTrackHitsV2::fgkPrecision2=1e-20; //precision | |
e61fd20d | 74 | const Double_t AliTPCTrackHitsV2::fgkTimePrecision=20.e-9; //hit time precision |
f641f6bd | 75 | |
76 | ||
77 | ||
78 | ||
f641f6bd | 79 | struct AliTPCTempHitInfoV2 { |
f43e383b | 80 | friend class AliTPCTrackHitsV2; |
81 | protected: | |
53110b9d | 82 | enum { kStackSize = 10000}; |
f641f6bd | 83 | AliTPCTempHitInfoV2(); |
53110b9d | 84 | AliTPCTempHitInfoV2(const AliTPCTempHitInfoV2 &hit) |
85 | {hit.Copy(*this);} | |
86 | AliTPCTempHitInfoV2& operator = (const AliTPCTempHitInfoV2 &hit) | |
87 | {hit.Copy(*this); return (*this);} | |
e61fd20d | 88 | void NewParam(Double_t r, Double_t z, Double_t fi, Int_t q, Float_t time); |
89 | void SetHit(Double_t r, Double_t z, Double_t fi, Int_t q, Float_t time); | |
f641f6bd | 90 | Double_t * GetPosition(Int_t index){return &fPositionStack[index*3];} |
91 | void UpdateParam(Double_t maxdelta); //recal | |
92 | void Fit2(Double_t fSumY, Double_t fSumYX, Double_t fSumYX2, | |
93 | Double_t fSumX, Double_t fSumX2, Double_t fSumX3, | |
94 | Double_t fSumX4, Int_t n, | |
95 | Double_t &a, Double_t &b, Double_t &c); | |
96 | void Fit(AliTrackHitsParamV2 * param); | |
53110b9d | 97 | Double_t fSumDr; // Sum of Dr |
98 | Double_t fSumDr2; // Square of sum of Dr | |
99 | Double_t fSumDr3; // Cube of sum of Dr | |
100 | Double_t fSumDr4; // Fourth power of sum of Dr | |
101 | Double_t fSumDFi; // Sum of DFi | |
102 | Double_t fSumDFiDr; // Sum of DFiDr | |
103 | Double_t fSumDFiDr2;// Sum of square of DFiDr | |
104 | Double_t fSumDZ; // Sum of DZ | |
105 | Double_t fSumDZDr; // Sum of DZDr | |
106 | Double_t fSumDZDr2; // Sum of square of DZDr | |
f641f6bd | 107 | Double_t fOldR; //previos r |
53110b9d | 108 | Double_t fPositionStack[3*kStackSize]; //position stack |
109 | UInt_t fQStack[kStackSize]; //Q stack | |
e61fd20d | 110 | Float_t fTimeStack[kStackSize]; //time stack |
f641f6bd | 111 | UInt_t fStackIndex; //current stack index |
112 | // UInt_t fInfoIndex; //current track info index | |
113 | UInt_t fParamIndex; //current track parameters index | |
114 | // AliTrackHitsInfo * fInfo; //current track info | |
115 | AliTrackHitsParamV2 * fParam; //current track param | |
53110b9d | 116 | private: |
117 | void Copy(AliTPCTempHitInfoV2 &) const | |
118 | {printf("Not Implemented\n"); exit(1);} | |
f641f6bd | 119 | }; |
120 | ||
121 | ||
122 | AliTPCTempHitInfoV2::AliTPCTempHitInfoV2() | |
123 | { | |
124 | // | |
53110b9d | 125 | // Standard constructor |
126 | // set to default value | |
127 | // | |
f641f6bd | 128 | fSumDr=fSumDr2=fSumDr3=fSumDr4= |
129 | fSumDFi=fSumDFiDr=fSumDFiDr2= | |
130 | fSumDZ=fSumDZDr=fSumDZDr2=0; | |
131 | fStackIndex = 0; | |
132 | // fInfoIndex = 0; | |
133 | fParamIndex = 0; | |
134 | } | |
135 | ||
136 | ||
e61fd20d | 137 | void AliTPCTempHitInfoV2::NewParam(Double_t r, Double_t z, Double_t fi, Int_t q, Float_t time) |
f641f6bd | 138 | { |
139 | // | |
140 | //reset stack and sum parameters | |
141 | //store line initial point | |
53110b9d | 142 | // |
f641f6bd | 143 | fSumDr=fSumDr2=fSumDr3=fSumDr4= |
144 | fSumDFi=fSumDFiDr=fSumDFiDr2= | |
145 | fSumDZ=fSumDZDr=fSumDZDr2=0; | |
146 | fStackIndex=0; | |
147 | fParam->fR = r; | |
148 | fOldR = r; | |
149 | fParam->fZ = z; | |
150 | fParam->fFi = fi; | |
151 | fParam->fAn = 0.; | |
152 | fParam->fAd = 0.; | |
153 | fParam->fTheta =0.; | |
154 | fParam->fThetaD =0.; | |
e61fd20d | 155 | SetHit(r,z,fi,q,time); |
f641f6bd | 156 | } |
157 | ||
e61fd20d | 158 | void AliTPCTempHitInfoV2::SetHit(Double_t r, Double_t z, Double_t fi, Int_t q, Float_t time) |
f641f6bd | 159 | { |
160 | // | |
161 | //add hit to the stack | |
162 | //recalculate new estimete of line parameters | |
163 | Double_t *f = GetPosition(fStackIndex); | |
164 | f[0] = r; | |
165 | f[1] = z; | |
166 | f[2] = fi; | |
167 | fQStack[fStackIndex]=q; | |
e61fd20d | 168 | fTimeStack[fStackIndex]=time; |
f641f6bd | 169 | if (fStackIndex==0) return; |
170 | Double_t dr = (r-fParam->fR); | |
171 | if (TMath::Abs(dr)<AliTPCTrackHitsV2::fgkPrecision) dr =AliTPCTrackHitsV2::fgkPrecision; | |
172 | Double_t dfi = fi-fParam->fFi; | |
173 | Double_t dz = z -fParam->fZ; | |
174 | Double_t dr2 =dr*dr; | |
175 | Double_t dr3 =dr2*dr; | |
176 | Double_t dr4 =dr3*dr; | |
177 | fSumDr +=dr; | |
178 | fSumDr2+=dr2; | |
179 | fSumDr3+=dr3; | |
180 | fSumDr4+=dr4; | |
181 | fSumDFi +=dfi; | |
182 | fSumDFiDr+=dfi*dr; | |
183 | fSumDFiDr2+=dfi*dr2; | |
184 | fSumDZ +=dz; | |
185 | fSumDZDr+=dz*dr; | |
186 | fSumDZDr2+=dz*dr2; | |
187 | ||
188 | //update fit parameters | |
189 | // | |
190 | Double_t det = fSumDr2*fSumDr4-fSumDr3*fSumDr3; | |
191 | if (TMath::Abs(det)<AliTPCTrackHitsV2::fgkPrecision2) return; | |
192 | if ( ( fStackIndex>1 ) ){ | |
193 | fParam->fAn = (fSumDr4*fSumDFiDr-fSumDr3*fSumDFiDr2)/det; | |
194 | fParam->fAd = (fSumDr2*fSumDFiDr2-fSumDr3*fSumDFiDr)/det; | |
195 | } | |
196 | else | |
197 | fParam->fAn = fSumDFiDr/fSumDr2; | |
198 | if ( ( fStackIndex>1 ) ){ | |
199 | fParam->fTheta = (fSumDr4*fSumDZDr-fSumDr3*fSumDZDr2)/det; | |
200 | fParam->fThetaD= (fSumDr2*fSumDZDr2-fSumDr3*fSumDZDr)/det; | |
201 | } | |
202 | else | |
203 | fParam->fTheta = fSumDZDr/fSumDr2; | |
204 | } | |
205 | ||
206 | ||
207 | void AliTPCTempHitInfoV2::UpdateParam(Double_t maxdelta) | |
208 | { | |
53110b9d | 209 | // |
210 | // recalc parameters not fixing origin point | |
211 | // | |
f641f6bd | 212 | if (fStackIndex>5){ |
213 | Double_t a,b,c; | |
214 | a=b=c=0; | |
215 | Fit2(fSumDFi, fSumDFiDr, fSumDFiDr2, fSumDr,fSumDr2,fSumDr3,fSumDr4, | |
216 | fStackIndex, a,b,c); | |
217 | if (TMath::Abs(a)<maxdelta){ | |
218 | fParam->fFi +=a/fParam->fR; | |
219 | fParam->fAn = b; | |
220 | fParam->fAd = c; | |
221 | } | |
222 | Fit2(fSumDZ, fSumDZDr, fSumDZDr2, fSumDr,fSumDr2,fSumDr3,fSumDr4, | |
223 | fStackIndex, a,b,c) ; | |
224 | if (TMath::Abs(a)<maxdelta){ | |
225 | fParam->fZ +=a; | |
226 | fParam->fTheta = b; | |
227 | fParam->fThetaD = c; | |
228 | } | |
229 | } | |
230 | ||
231 | } | |
53110b9d | 232 | |
f641f6bd | 233 | void AliTPCTempHitInfoV2::Fit2(Double_t fSumY, Double_t fSumYX, Double_t fSumYX2, |
234 | Double_t fSumX, Double_t fSumX2, Double_t fSumX3, | |
235 | Double_t fSumX4, Int_t n, | |
236 | Double_t &a, Double_t &b, Double_t &c) | |
237 | { | |
53110b9d | 238 | // |
239 | // fit of second order | |
240 | // | |
f641f6bd | 241 | Double_t det = |
242 | n* (fSumX2*fSumX4-fSumX3*fSumX3) - | |
243 | fSumX* (fSumX*fSumX4-fSumX3*fSumX2)+ | |
244 | fSumX2* (fSumX*fSumX3-fSumX2*fSumX2); | |
245 | ||
246 | if (TMath::Abs(det)> AliTPCTrackHitsV2::fgkPrecision) { | |
247 | a = | |
248 | (fSumY * (fSumX2*fSumX4-fSumX3*fSumX3)- | |
249 | fSumX *(fSumYX*fSumX4-fSumYX2*fSumX3)+ | |
250 | fSumX2*(fSumYX*fSumX3-fSumYX2*fSumX2))/det; | |
251 | b= | |
252 | (n*(fSumYX*fSumX4-fSumX3*fSumYX2)- | |
253 | fSumY*(fSumX*fSumX4-fSumX3*fSumX2)+ | |
254 | fSumX2*(fSumX*fSumYX2-fSumYX*fSumX2))/det; | |
255 | c= | |
256 | (n*(fSumX2*fSumYX2-fSumYX*fSumX3)- | |
257 | fSumX*(fSumX*fSumYX2-fSumYX*fSumX2)+ | |
258 | fSumY*(fSumX*fSumX3-fSumX2*fSumX2))/det; | |
259 | } | |
260 | } | |
261 | ||
262 | void AliTPCTempHitInfoV2::Fit(AliTrackHitsParamV2 * param) | |
263 | { | |
53110b9d | 264 | // |
f641f6bd | 265 | // fit fixing first and the last point |
53110b9d | 266 | // result stored in new param |
267 | // | |
f641f6bd | 268 | Double_t dx2 = (GetPosition(fStackIndex))[0]-fParam->fR; |
269 | Double_t det = fSumDr4+dx2*fSumDr2-2*dx2*fSumDr3; | |
270 | if ( (TMath::Abs(det)> AliTPCTrackHitsV2::fgkPrecision) && | |
271 | ((TMath::Abs(dx2)> AliTPCTrackHitsV2::fgkPrecision))){ | |
272 | Double_t dfi2 = (GetPosition(fStackIndex))[1]-fParam->fFi; | |
273 | param->fAd = (fSumDFiDr2+dfi2*fSumDr-dx2*fSumDFiDr-dfi2*fSumDr3/dx2)/det; | |
274 | param->fAn = (dfi2-param->fAd*dx2*dx2)/dx2; | |
275 | ||
276 | Double_t dz2 = (GetPosition(fStackIndex))[1]-fParam->fZ; | |
277 | param->fTheta = (fSumDZDr2+dz2*fSumDr-dx2*fSumDZDr-dz2*fSumDr3/dx2)/det; | |
278 | param->fTheta = (dz2-param->fAd*dx2*dx2)/dx2; | |
279 | } | |
280 | ||
281 | } | |
282 | ||
283 | AliTrackHitsParamV2::AliTrackHitsParamV2() | |
284 | { | |
53110b9d | 285 | // |
286 | // default constructor | |
287 | // | |
f641f6bd | 288 | fgCounter1++; |
289 | fgCounter2++; | |
290 | fHitDistance=0; | |
291 | fCharge=0; | |
e61fd20d | 292 | fTime=0; |
f641f6bd | 293 | fNHits=0; |
294 | } | |
53110b9d | 295 | |
f641f6bd | 296 | AliTrackHitsParamV2::~AliTrackHitsParamV2() |
297 | { | |
53110b9d | 298 | // |
299 | // Standard destructor | |
300 | // | |
f641f6bd | 301 | fgCounter1--; |
302 | if (fHitDistance) { | |
303 | delete[]fHitDistance; | |
304 | fHitDistance=0; | |
305 | } | |
306 | if (fCharge){ | |
307 | delete[]fCharge; | |
308 | fCharge =0; | |
309 | } | |
e61fd20d | 310 | if (fTime){ |
311 | delete[]fTime; | |
312 | fTime =0; | |
313 | } | |
f641f6bd | 314 | } |
315 | ||
316 | ||
317 | AliTPCTrackHitsV2::AliTPCTrackHitsV2() | |
318 | { | |
319 | // | |
320 | //default constructor | |
321 | // | |
322 | const Float_t kHitPrecision=0.002; //default precision for hit position in cm | |
323 | const Float_t kStep =0.003; //30 mum step | |
324 | const UShort_t kMaxDistance =100; //maximum distance 100 | |
325 | ||
326 | fPrecision=kHitPrecision; //precision in cm | |
327 | fStep = kStep; //step size | |
328 | fMaxDistance = kMaxDistance; //maximum distance | |
329 | fTempInfo =0; | |
330 | fSize=0; | |
331 | //fTrackHitsInfo = new AliObjectArray("AliTrackHitsInfo"); | |
332 | //fTrackHitsParam = new AliObjectArray("AliTrackHitsParamV2"); | |
333 | //fHitsPosAndQ = new TArrayOfArrayVStack("AliHitInfo"); | |
334 | fArray = new TClonesArray("AliTrackHitsParamV2"); | |
335 | fCurrentHit = new AliTPCCurrentHitV2; | |
336 | fVolumes =0; | |
337 | fNVolumes =0; | |
fce0283f | 338 | fHit =0; |
f641f6bd | 339 | fgCounter1++; |
340 | fgCounter2++; | |
341 | ||
342 | } | |
343 | ||
344 | AliTPCTrackHitsV2::~AliTPCTrackHitsV2() | |
345 | { | |
346 | // | |
347 | //default destructor | |
348 | // | |
349 | // if (fTrackHitsInfo) delete fTrackHitsInfo; | |
350 | if (fArray) { | |
351 | delete fArray; | |
352 | fArray =0; | |
353 | } | |
354 | //if (fHitsPosAndQ) delete fHitsPosAndQ; | |
355 | if (fCurrentHit) delete fCurrentHit; | |
356 | if (fTempInfo) delete fTempInfo; | |
357 | if (fVolumes) { | |
358 | delete [] fVolumes; | |
359 | fVolumes =0; | |
360 | fNVolumes=0; | |
361 | } | |
fce0283f | 362 | if (fHit){ |
363 | delete fHit; | |
364 | fHit=0; | |
365 | } | |
f641f6bd | 366 | fgCounter1--; |
367 | } | |
368 | ||
5f6e636c | 369 | void AliTPCTrackHitsV2::Clear(Option_t * /*option*/) |
f641f6bd | 370 | { |
371 | // | |
53110b9d | 372 | // clear object |
373 | // | |
6e493dba | 374 | fSize = 0; |
f641f6bd | 375 | if (fArray){ |
376 | for (Int_t i=0;i<fArray->GetEntriesFast();i++){ | |
377 | AliTrackHitsParamV2 * par = (AliTrackHitsParamV2 *)fArray->UncheckedAt(i); | |
378 | par->~AliTrackHitsParamV2(); // delete object | |
379 | } | |
380 | fArray->Clear(); | |
381 | } | |
382 | if (fTempInfo){ | |
383 | delete fTempInfo; | |
fce0283f | 384 | delete fHit; |
385 | fHit =0; | |
f641f6bd | 386 | fTempInfo =0; |
387 | } | |
388 | if (fVolumes){ | |
389 | delete [] fVolumes; | |
390 | fVolumes=0; | |
391 | fNVolumes=0; | |
392 | } | |
393 | } | |
394 | ||
395 | ||
396 | void AliTPCTrackHitsV2::AddHitKartez(Int_t volumeID, Int_t trackID, Double_t x, | |
e61fd20d | 397 | Double_t y, Double_t z,Int_t q, Float_t time) |
f641f6bd | 398 | { |
399 | // | |
53110b9d | 400 | // add hit to the container - it add hit at the end - input in global coordinata |
401 | // | |
f641f6bd | 402 | Double_t r = TMath::Sqrt(x*x+y*y); |
403 | Double_t fi = TMath::ACos(x/r); | |
404 | if (y<0) fi*=-1.; | |
e61fd20d | 405 | AddHit(volumeID,trackID,r,z,fi,q,time); |
f641f6bd | 406 | } |
407 | ||
408 | ||
409 | void AliTPCTrackHitsV2::AddHit(Int_t volumeID, Int_t trackID, | |
e61fd20d | 410 | Double_t r, Double_t z, Double_t fi, Int_t q, Float_t time) |
f641f6bd | 411 | { |
53110b9d | 412 | // |
413 | // Adding one hit | |
f641f6bd | 414 | // |
415 | fSize++; | |
416 | Bool_t diff=kFALSE; | |
417 | if (!fTempInfo) { //initialisation of track - initialisation of parameters | |
418 | fTempInfo = new AliTPCTempHitInfoV2; | |
419 | fTempInfo->fParam = new((*fArray)[0]) AliTrackHitsParamV2; | |
420 | fTempInfo->fParam->fVolumeID = volumeID; | |
421 | fTempInfo->fParam->fTrackID = trackID; | |
422 | AddVolume(volumeID); | |
423 | // | |
424 | fTempInfo->fParamIndex = 0; | |
e61fd20d | 425 | fTempInfo->NewParam(r,z,fi,q,time); |
f641f6bd | 426 | return; |
427 | } | |
428 | ||
429 | // if new volume or new trackID | |
430 | if ( (volumeID!=fTempInfo->fParam->fVolumeID) || | |
431 | (trackID!=fTempInfo->fParam->fTrackID)){ | |
432 | if (volumeID!=fTempInfo->fParam->fVolumeID) AddVolume(volumeID); | |
433 | diff=kTRUE; | |
434 | FlushHitStack(kTRUE); | |
435 | ||
436 | fTempInfo->fParamIndex++; | |
437 | fTempInfo->fParam = new((*fArray)[fTempInfo->fParamIndex]) AliTrackHitsParamV2; | |
438 | fTempInfo->fParam->fVolumeID = volumeID; | |
439 | fTempInfo->fParam->fTrackID = trackID; | |
e61fd20d | 440 | fTempInfo->NewParam(r,z,fi,q,time); |
f641f6bd | 441 | return; |
442 | } | |
443 | ||
444 | //calculate current fit precission to next point | |
445 | AliTrackHitsParamV2 ¶m = *(fTempInfo->fParam); | |
446 | Double_t dd=0; | |
447 | Double_t dl=0; | |
448 | Double_t ratio=0; | |
449 | Double_t dr,dz,dfi,ddz,ddfi; | |
450 | Double_t drhit,ddl; | |
451 | dr=dz=dfi=ddz=ddfi=0; | |
452 | drhit = r-fTempInfo->fOldR; | |
453 | { | |
454 | //Double_t dfi2 = param.fAn+2*param.fAd*(r-param.fR); | |
455 | Double_t dfi2 = param.fAn; | |
456 | dfi2*=dfi2*fTempInfo->fOldR*fTempInfo->fOldR; | |
457 | //Double_t ddz2 = param.fTheta+2*param.fThetaD*(r-param.fR); | |
458 | Double_t ddz2 = param.fTheta; | |
459 | ddz2*=ddz2; | |
460 | ratio = TMath::Sqrt(1.+ dfi2+ ddz2); | |
461 | } | |
c4a237ae | 462 | // |
463 | // dl = fStep * Short_t(TMath::Nint(drhit*ratio/fStep)); // MI change - range check | |
464 | dl = drhit*ratio/fStep; | |
465 | if (TMath::Abs(dl)>32765) dl =0; | |
466 | dl = fStep * Short_t(TMath::Nint(dl)); | |
467 | // | |
f641f6bd | 468 | ddl = dl - drhit*ratio; |
469 | fTempInfo->fOldR += dl/ratio; | |
470 | ||
471 | if (fTempInfo->fStackIndex>2){ | |
472 | dr = r-param.fR; | |
473 | dz = z-param.fZ; | |
474 | dfi = fi-param.fFi; | |
475 | ddz = dr*param.fTheta+dr*dr*param.fThetaD-dz; | |
476 | ddfi= dr*param.fAn+dr*dr*param.fAd-dfi; | |
477 | dd = TMath::Sqrt(ddz*ddz+r*r*ddfi*ddfi+ddl*ddl); | |
478 | // | |
479 | } | |
480 | //safety factor 1.25 | |
481 | if ( ( (dd*1.25>fPrecision) ) || | |
53110b9d | 482 | (fTempInfo->fStackIndex+4>fTempInfo->kStackSize) || |
f641f6bd | 483 | (TMath::Abs(dl/fStep)>fMaxDistance) ) |
484 | diff=kTRUE; | |
485 | else{ // if precision OK | |
486 | fTempInfo->fStackIndex++; | |
e61fd20d | 487 | fTempInfo->SetHit(r,z,fi,q,time); |
f641f6bd | 488 | return; |
489 | } | |
490 | ||
491 | ||
492 | //if parameter changed | |
493 | if (FlushHitStack(kFALSE)){ //if full buffer flushed | |
494 | fTempInfo->fParamIndex++; | |
495 | fTempInfo->fParam = new((*fArray)[fTempInfo->fParamIndex]) AliTrackHitsParamV2; | |
496 | fTempInfo->fParam->fVolumeID = volumeID; | |
497 | fTempInfo->fParam->fTrackID = trackID; | |
e61fd20d | 498 | fTempInfo->NewParam(r,z,fi,q,time); |
f641f6bd | 499 | } |
500 | else{ | |
501 | fTempInfo->fStackIndex++; | |
e61fd20d | 502 | fTempInfo->SetHit(r,z,fi,q,time); |
f641f6bd | 503 | } |
504 | } | |
505 | ||
506 | Bool_t AliTPCTrackHitsV2::FlushHitStack(Bool_t force) | |
507 | { | |
508 | // | |
53110b9d | 509 | // write fHitsPosAndQ information from the stack to te arrays |
510 | // | |
f641f6bd | 511 | if (!fTempInfo) return kFALSE; |
512 | ||
513 | AliTrackHitsParamV2 & param = *(fTempInfo->fParam); | |
514 | //recalculate track parameter not fixing first point | |
515 | fTempInfo->UpdateParam(fStep/4.); | |
516 | //fTempInfo->Fit(fTempInfo->fParam); //- fixing the first and the last point | |
517 | ||
518 | Double_t oldr = param.fR; | |
519 | UInt_t i; | |
520 | Double_t dd; | |
521 | param.fNHits = fTempInfo->fStackIndex+1; | |
522 | if (param.fHitDistance) delete []param.fHitDistance; | |
523 | if (param.fCharge) delete []param.fCharge; | |
e61fd20d | 524 | if (param.fTime) delete []param.fTime; |
f641f6bd | 525 | param.fHitDistance = new Short_t[param.fNHits]; |
526 | param.fCharge = new Short_t[param.fNHits]; | |
e61fd20d | 527 | param.fTime = new Short_t[param.fNHits]; |
f641f6bd | 528 | |
529 | ||
530 | for (i=0; i <= fTempInfo->fStackIndex; i++){ | |
531 | Double_t * position = fTempInfo->GetPosition(i); | |
532 | Double_t dr = position[0]-oldr; | |
533 | Double_t ratio; | |
534 | { | |
535 | //Double_t dfi2 = param.fAn+2*param.fAd*(position[0]-param.fR); | |
536 | Double_t dfi2 = param.fAn; | |
537 | dfi2*=dfi2*oldr*oldr; | |
538 | //Double_t ddz2 = param.fTheta+2*param.fThetaD*(position[0]-param.fR); | |
539 | Double_t ddz2 = param.fTheta; | |
540 | ddz2*=ddz2; | |
541 | ratio = TMath::Sqrt(1.+ dfi2+ ddz2); | |
542 | } | |
543 | ||
595c3700 | 544 | // Double_t dl = fStep*(Short_t)TMath::Nint(dr*ratio/fStep); //MI change |
545 | Double_t dl = dr*ratio/fStep; | |
546 | if (TMath::Abs(dl)>32765) dl =0; | |
547 | dl = fStep * Short_t(TMath::Nint(dl)); | |
548 | ||
f641f6bd | 549 | dr = dl/ratio; |
550 | oldr+=dr; | |
551 | //calculate precission | |
552 | AliTrackHitsParamV2 ¶m = *(fTempInfo->fParam); | |
553 | //real deltas | |
554 | Double_t dr1= position[0]-param.fR; | |
555 | Double_t dz = position[1]-param.fZ; | |
556 | Double_t dfi = position[2]-param.fFi; | |
557 | //extrapolated deltas | |
558 | Double_t dr2 = oldr-param.fR; | |
559 | Double_t ddr = dr2-dr1; | |
560 | Double_t ddz = dr2*param.fTheta+dr2*dr2*param.fThetaD-dz; | |
561 | Double_t ddfi= dr2*param.fAn+dr2*dr2*param.fAd-dfi; | |
562 | dd = TMath::Sqrt(ddz*ddz+oldr*oldr*ddfi*ddfi+ddr*ddr); | |
563 | ||
564 | ||
565 | if ( (dd>fPrecision) ){ | |
566 | //if ( (dd<0) ){ | |
567 | if (i==0){ | |
568 | param.fAn = 0; | |
569 | param.fAd = 0; | |
570 | param.fTheta =0; | |
571 | param.fThetaD =0; | |
572 | Double_t ddz = dr2*param.fTheta+dr2*dr2*param.fThetaD-dz; | |
573 | Double_t ddfi= dr2*param.fAn+dr2*dr2*param.fAd-dfi; | |
574 | dl = 0; | |
575 | dd = TMath::Sqrt(ddz*ddz+oldr*oldr*ddfi*ddfi+ddr*ddr); | |
576 | } | |
577 | else | |
578 | break; | |
579 | } | |
580 | ||
581 | param.fHitDistance[i]= Short_t(TMath::Nint(dl/fStep)); | |
582 | param.fCharge[i]= Short_t(fTempInfo->fQStack[i]); | |
e61fd20d | 583 | param.fTime[i]= Short_t(fTempInfo->fTimeStack[i]/AliTPCTrackHitsV2::fgkTimePrecision); |
f641f6bd | 584 | } |
585 | ||
586 | if (i<=fTempInfo->fStackIndex){ //if previous iteration not succesfull | |
587 | Short_t * charge = new Short_t[i]; | |
e61fd20d | 588 | Short_t * time = new Short_t[i]; |
f641f6bd | 589 | Short_t * hitDistance= new Short_t[i]; |
590 | memcpy(charge, param.fCharge,sizeof(Short_t)*i); | |
e61fd20d | 591 | memcpy(time, param.fTime,sizeof(Short_t)*i); |
f641f6bd | 592 | memcpy(hitDistance, param.fHitDistance,sizeof(Short_t)*i); |
593 | delete [] param.fCharge; | |
e61fd20d | 594 | delete [] param.fTime; |
f641f6bd | 595 | delete [] param.fHitDistance; |
596 | param.fNHits= i; | |
597 | param.fCharge = charge; | |
e61fd20d | 598 | param.fTime = time; |
f641f6bd | 599 | param.fHitDistance = hitDistance; |
600 | // | |
601 | Int_t volumeID = fTempInfo->fParam->fVolumeID; | |
602 | Int_t trackID =fTempInfo->fParam->fTrackID; | |
603 | fTempInfo->fParamIndex++; | |
604 | fTempInfo->fParam = new((*fArray)[fTempInfo->fParamIndex]) AliTrackHitsParamV2; | |
605 | Double_t * p = fTempInfo->GetPosition(i); | |
606 | UInt_t index2 = fTempInfo->fStackIndex; | |
e61fd20d | 607 | fTempInfo->NewParam(p[0],p[1],p[2],fTempInfo->fQStack[i],fTempInfo->fTimeStack[i]); |
f641f6bd | 608 | fTempInfo->fParam->fVolumeID= volumeID; |
609 | fTempInfo->fParam->fTrackID= trackID; | |
610 | if (i+1<=index2) FlushHitStack2(i+1,index2); | |
611 | ||
612 | if (force) return FlushHitStack(kTRUE); | |
613 | return kFALSE; | |
614 | } | |
615 | return kTRUE; | |
616 | } | |
617 | ||
618 | ||
619 | void AliTPCTrackHitsV2::FlushHitStack2(Int_t index1, Int_t index2) | |
620 | { | |
621 | // | |
622 | // second iteration flush stack | |
53110b9d | 623 | // call only for hits where first iteration were not succesfully interpolated |
624 | // | |
f641f6bd | 625 | Double_t * positionstack = new Double_t[3*(index2-index1+1)]; |
626 | UInt_t * qstack = new UInt_t[index2-index1+1]; | |
e61fd20d | 627 | Float_t * timestack = new Float_t[index2-index1+1]; |
f641f6bd | 628 | memcpy(positionstack, &fTempInfo->fPositionStack[3*index1], |
629 | (3*(index2-index1+1))*sizeof(Double_t)); | |
630 | memcpy(qstack, &fTempInfo->fQStack[index1],(index2-index1+1)*sizeof(UInt_t)); | |
e61fd20d | 631 | memcpy(timestack, &fTempInfo->fTimeStack[index1],(index2-index1+1)*sizeof(Float_t)); |
f641f6bd | 632 | Double_t *p = positionstack; |
633 | for (Int_t j=0; j<=index2-index1;j++){ | |
634 | fTempInfo->fStackIndex++; | |
e61fd20d | 635 | fTempInfo->SetHit(p[3*j+0],p[3*j+1],p[3*j+2],qstack[j],timestack[j]); |
f641f6bd | 636 | } |
637 | delete []positionstack; | |
638 | delete []qstack; | |
e61fd20d | 639 | delete []timestack; |
f641f6bd | 640 | } |
641 | ||
642 | ||
643 | void AliTPCTrackHitsV2::AddVolume(Int_t volume) | |
644 | { | |
645 | // | |
646 | //add volumes to tthe list of volumes | |
53110b9d | 647 | // |
f641f6bd | 648 | Int_t * volumes = new Int_t[fNVolumes+1]; |
f55b9162 | 649 | if (fVolumes) memcpy(volumes,fVolumes,(fNVolumes)*sizeof(Int_t)); |
f641f6bd | 650 | volumes[fNVolumes]=volume; |
651 | fNVolumes++; | |
652 | if (fVolumes) delete []fVolumes; | |
653 | fVolumes = volumes; | |
654 | } | |
655 | ||
656 | ||
f641f6bd | 657 | Bool_t AliTPCTrackHitsV2::First() |
658 | { | |
659 | // | |
660 | //set Current hit for the first hit | |
661 | // | |
6e493dba | 662 | |
663 | if (fArray->GetSize()<=0) { | |
664 | fCurrentHit->fStatus = kFALSE; | |
665 | return kFALSE; | |
666 | } | |
667 | ||
f641f6bd | 668 | AliTrackHitsParamV2 *param = (AliTrackHitsParamV2 *)fArray->At(0); |
fce0283f | 669 | if (!fHit) fHit = new AliTPChit; |
f641f6bd | 670 | if (!(param) ) { |
671 | fCurrentHit->fStatus = kFALSE; | |
672 | return kFALSE; | |
673 | } | |
674 | // | |
675 | fCurrentHit->fParamIndex = 0; | |
676 | fCurrentHit->fStackIndex = 0; | |
677 | // | |
fce0283f | 678 | // |
679 | ((AliTPChit*)fHit)->fSector = param->fVolumeID; | |
680 | ((AliTPChit*)fHit)->SetTrack(param->fTrackID); | |
681 | ((AliTPChit*)fHit)->SetX(param->fR*TMath::Cos(param->fFi)); | |
682 | ((AliTPChit*)fHit)->SetY(param->fR*TMath::Sin(param->fFi)); | |
683 | ((AliTPChit*)fHit)->SetZ(param->fZ); | |
684 | ((AliTPChit*)fHit)->fQ = param->fCharge[0]; | |
e61fd20d | 685 | ((AliTPChit*)fHit)->fTime = (Float_t)(param->fTime[0]*AliTPCTrackHitsV2::fgkTimePrecision); |
fce0283f | 686 | /* |
687 | fCurrentHit->fHit.fSector = param->fVolumeID; | |
688 | fCurrentHit->fHit.SetTrack(param->fTrackID); | |
689 | fCurrentHit->fHit.SetX(param->fR*TMath::Cos(param->fFi)); | |
690 | fCurrentHit->fHit.SetY(param->fR*TMath::Sin(param->fFi)); | |
691 | fCurrentHit->fHit.SetZ(param->fZ); | |
692 | fCurrentHit->fHit.fQ = param->fCharge[0]; | |
e61fd20d | 693 | fCurrentHit->fHit.fTime = (Float_t)(param->fTime[0]*AliTPCTrackHitsV2::fgkTimePrecision); |
fce0283f | 694 | */ |
f641f6bd | 695 | fCurrentHit->fR = param->fR; |
696 | ||
697 | return fCurrentHit->fStatus = kTRUE; | |
698 | } | |
699 | ||
700 | Bool_t AliTPCTrackHitsV2::Next() | |
701 | { | |
702 | // | |
53110b9d | 703 | // Hit iterator |
704 | // | |
f641f6bd | 705 | if (!(fCurrentHit->fStatus)) |
706 | return kFALSE; | |
707 | ||
708 | fCurrentHit->fStackIndex++; | |
709 | ||
710 | AliTrackHitsParamV2 *param = (AliTrackHitsParamV2 *)fArray->At(fCurrentHit->fParamIndex); | |
711 | if (fCurrentHit->fStackIndex>=param->fNHits){ | |
712 | fCurrentHit->fParamIndex++; | |
713 | if (fCurrentHit->fParamIndex>=fArray->GetEntriesFast()){ | |
714 | fCurrentHit->fStatus=kFALSE; | |
715 | return kFALSE; | |
716 | } | |
717 | param = (AliTrackHitsParamV2 *)fArray->At(fCurrentHit->fParamIndex); | |
718 | fCurrentHit->fStackIndex=0; | |
719 | fCurrentHit->fR = param->fR; | |
720 | } | |
721 | ||
722 | ||
723 | ||
724 | Double_t ratio; | |
725 | { | |
726 | // Double_t dfi2 = param->fAn+2*param->fAd*(fCurrentHit->fR-param->fR); | |
727 | Double_t dfi2 = param->fAn; | |
728 | dfi2*=dfi2*fCurrentHit->fR*fCurrentHit->fR; | |
729 | // Double_t ddz2 = param->fTheta+2*param->fThetaD*(fCurrentHit->fR-param->fR); | |
730 | Double_t ddz2 = param->fTheta; | |
731 | ddz2*=ddz2; | |
732 | ratio = TMath::Sqrt(1.+ dfi2+ ddz2); | |
733 | } | |
734 | ||
735 | fCurrentHit->fR += fStep*param->fHitDistance[fCurrentHit->fStackIndex]/ratio; | |
736 | ||
737 | Double_t dR = fCurrentHit->fR - param->fR; | |
738 | Double_t fi = param->fFi + (param->fAn*dR+param->fAd*dR*dR); | |
739 | Double_t z = param->fZ + (param->fTheta*dR+param->fThetaD*dR*dR); | |
fce0283f | 740 | /* |
f641f6bd | 741 | fCurrentHit->fHit.fQ = param->fCharge[fCurrentHit->fStackIndex]; |
e61fd20d | 742 | fCurrentHit->fHit.fTime = (Float_t)(param->fTime[fCurrentHit->fStackIndex]*AliTPCTrackHitsV2::fgkTimePrecision); |
f641f6bd | 743 | fCurrentHit->fHit.SetX(fCurrentHit->fR*TMath::Cos(fi)); |
744 | fCurrentHit->fHit.SetY(fCurrentHit->fR*TMath::Sin(fi)); | |
745 | fCurrentHit->fHit.SetZ(z); | |
746 | fCurrentHit->fHit.fSector = param->fVolumeID; | |
747 | fCurrentHit->fHit.SetTrack(param->fTrackID); | |
fce0283f | 748 | */ |
749 | ((AliTPChit*)fHit)->fQ = param->fCharge[fCurrentHit->fStackIndex]; | |
e61fd20d | 750 | ((AliTPChit*)fHit)->fTime = (Float_t)(param->fTime[fCurrentHit->fStackIndex]*AliTPCTrackHitsV2::fgkTimePrecision); |
fce0283f | 751 | ((AliTPChit*)fHit)->SetX(fCurrentHit->fR*TMath::Cos(fi)); |
752 | ((AliTPChit*)fHit)->SetY(fCurrentHit->fR*TMath::Sin(fi)); | |
753 | ((AliTPChit*)fHit)->SetZ(z); | |
754 | ((AliTPChit*)fHit)->fSector = param->fVolumeID; | |
755 | ((AliTPChit*)fHit)->SetTrack(param->fTrackID); | |
756 | ||
f641f6bd | 757 | return kTRUE; |
758 | } | |
759 | ||
53110b9d | 760 | AliHit * AliTPCTrackHitsV2::GetHit() const |
f641f6bd | 761 | { |
53110b9d | 762 | // |
763 | // Return one hit | |
f641f6bd | 764 | // |
fce0283f | 765 | return (fCurrentHit->fStatus)? fHit:0; |
f641f6bd | 766 | //return &fCurrentHit->fHit; |
767 | ||
768 | } | |
769 | ||
770 | AliTrackHitsParamV2 * AliTPCTrackHitsV2::GetParam() | |
771 | { | |
53110b9d | 772 | // |
773 | // Return current parameters | |
774 | // | |
775 | return (fCurrentHit->fStatus)? | |
776 | (AliTrackHitsParamV2 *)fArray->At(fCurrentHit->fParamIndex):0; | |
f641f6bd | 777 | } |
53110b9d | 778 |