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b6895dd8 | 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 | |
cf98c13f | 18 | /////////////////////////////////////////////////////////////////////////////// |
19 | // // | |
20 | // Time Projection Chamber track hits object // | |
21 | // | |
22 | // Origin: Marian Ivanov , GSI Darmstadt | |
23 | // | |
24 | // Class for storing simulated AliTPCHits for given track // | |
25 | // -average compression comparing to classical ClonesArray is // | |
26 | // around 5-7 (depending on the required hit precision) // | |
27 | // // | |
28 | //Begin_Html | |
29 | /* | |
30 | <img src="gif/AliTPCTrackHits.gif"> | |
31 | */ | |
32 | //End_Html | |
33 | // // | |
34 | // // | |
35 | /////////////////////////////////////////////////////////////////////////////// | |
36 | ||
6d171107 | 37 | #include <TError.h> |
cf98c13f | 38 | |
6d171107 | 39 | #include "AliTPC.h" |
40 | #include "AliTPCTrackHits.h" | |
ef00250a | 41 | // Interface classes |
42 | #include "AliTPCTrackHitsInterfaces.h" | |
cf98c13f | 43 | |
44 | ClassImp(AliTPCTrackHits) | |
45 | LClassImp(AliTrackHitsInfo) | |
46 | LClassImp(AliTrackHitsParam) | |
47 | LClassImp(AliHitInfo) | |
48 | ||
49 | Int_t AliTrackHitsInfo::fgCounter1 =0; | |
50 | Int_t AliTrackHitsInfo::fgCounter2 =0; | |
51 | Int_t AliTrackHitsParam::fgCounter1 =0; | |
52 | Int_t AliTrackHitsParam::fgCounter2 =0; | |
53 | Int_t AliHitInfo::fgCounter1 =0; | |
54 | Int_t AliHitInfo::fgCounter2 =0; | |
55 | Int_t AliTPCTrackHits::fgCounter1 =0; | |
56 | Int_t AliTPCTrackHits::fgCounter2 =0; | |
57 | const Double_t AliTPCTrackHits::fgkPrecision=1e-6; //precision | |
58 | const Double_t AliTPCTrackHits::fgkPrecision2=1e-20; //precision | |
e61fd20d | 59 | const Double_t AliTPCTrackHits::fgkTimePrecision=20.e-9; //hit time precision |
cf98c13f | 60 | |
61 | ||
6d171107 | 62 | class AliTPCCurrentHit { |
982aff31 | 63 | friend class AliTPCTrackHits; |
64 | private: | |
65 | AliTPChit fHit; // - hit in "standard" representation | |
cf98c13f | 66 | UInt_t fInfoIndex;// - current info pointer |
67 | UInt_t fParamIndex;// - current param pointer | |
68 | UInt_t fStackIndex; // - current hit stack index | |
69 | Double_t fR; //current Radius | |
70 | Bool_t fStatus; //current status | |
71 | }; | |
72 | ||
73 | ||
6d171107 | 74 | class AliTPCTempHitInfo { |
982aff31 | 75 | friend class AliTPCTrackHits; |
76 | private: | |
77 | enum { kStackSize = 100}; | |
e15899a0 | 78 | AliTPCTempHitInfo(); |
6d171107 | 79 | AliTPCTempHitInfo(const AliTPCTempHitInfo &) |
80 | {::Fatal("copy ctor","Not implemented\n");} | |
81 | AliTPCTempHitInfo & operator = (const AliTPCTempHitInfo &) | |
82 | {::Fatal("= operator","Not implemented\n");return *this;} | |
83 | ||
e61fd20d | 84 | void NewParam(Double_t r, Double_t z, Double_t fi, Int_t q, Float_t time); |
85 | void SetHit(Double_t r, Double_t z, Double_t fi, Int_t q, Float_t time); | |
cf98c13f | 86 | Double_t * GetPosition(Int_t index){return &fPositionStack[index*3];} |
87 | void UpdateParam(Double_t maxdelta); //recal | |
88 | void Fit2(Double_t fSumY, Double_t fSumYX, Double_t fSumYX2, | |
89 | Double_t fSumX, Double_t fSumX2, Double_t fSumX3, | |
90 | Double_t fSumX4, Int_t n, | |
91 | Double_t &a, Double_t &b, Double_t &c); | |
92 | void Fit(AliTrackHitsParam * param); | |
835b3d81 | 93 | Double_t fSumDr; //fSumDr |
94 | Double_t fSumDr2; //fSumDr2 | |
95 | Double_t fSumDr3; // fSumDr3 | |
96 | Double_t fSumDr4; //fSumDr4 | |
97 | Double_t fSumDFi; //fSumDFi | |
98 | Double_t fSumDFiDr; // fSumDFiDr | |
99 | Double_t fSumDFiDr2;//fSumDFiDr2 | |
100 | Double_t fSumDZ; //fSumDZ | |
101 | Double_t fSumDZDr; //fSumDZDr | |
102 | Double_t fSumDZDr2; //fSumDZDr2 | |
cf98c13f | 103 | Double_t fOldR; //previos r |
982aff31 | 104 | Double_t fPositionStack[3*kStackSize]; //position stack |
105 | UInt_t fQStack[kStackSize]; //Q stack | |
e61fd20d | 106 | Float_t fTimeStack[kStackSize]; //time stack |
cf98c13f | 107 | UInt_t fStackIndex; //current stack index |
108 | UInt_t fInfoIndex; //current track info index | |
109 | UInt_t fParamIndex; //current track parameters index | |
110 | AliTrackHitsInfo * fInfo; //current track info | |
111 | AliTrackHitsParam * fParam; //current track param | |
112 | }; | |
113 | ||
114 | ||
115 | AliTPCTempHitInfo::AliTPCTempHitInfo() | |
116 | { | |
117 | // | |
118 | //set to default value | |
119 | fSumDr=fSumDr2=fSumDr3=fSumDr4= | |
120 | fSumDFi=fSumDFiDr=fSumDFiDr2= | |
121 | fSumDZ=fSumDZDr=fSumDZDr2=0; | |
122 | fStackIndex = 0; | |
123 | fInfoIndex = 0; | |
124 | fParamIndex = 0; | |
125 | } | |
126 | ||
127 | ||
e61fd20d | 128 | void AliTPCTempHitInfo::NewParam(Double_t r, Double_t z, Double_t fi, Int_t q, Float_t time) |
cf98c13f | 129 | { |
130 | // | |
131 | //reset stack and sum parameters | |
132 | //store line initial point | |
133 | fSumDr=fSumDr2=fSumDr3=fSumDr4= | |
134 | fSumDFi=fSumDFiDr=fSumDFiDr2= | |
135 | fSumDZ=fSumDZDr=fSumDZDr2=0; | |
136 | fStackIndex=0; | |
137 | fParam->fR = r; | |
138 | fOldR = r; | |
139 | fParam->fZ = z; | |
140 | fParam->fFi = fi; | |
141 | fParam->fAn = 0.; | |
142 | fParam->fAd = 0.; | |
143 | fParam->fTheta =0.; | |
144 | fParam->fThetaD =0.; | |
e61fd20d | 145 | SetHit(r,z,fi,q,time); |
cf98c13f | 146 | } |
147 | ||
e61fd20d | 148 | void AliTPCTempHitInfo::SetHit(Double_t r, Double_t z, Double_t fi, Int_t q, Float_t time) |
cf98c13f | 149 | { |
150 | // | |
151 | //add hit to the stack | |
152 | //recalculate new estimete of line parameters | |
153 | Double_t *f = GetPosition(fStackIndex); | |
154 | f[0] = r; | |
155 | f[1] = z; | |
156 | f[2] = fi; | |
157 | fQStack[fStackIndex]=q; | |
e61fd20d | 158 | fTimeStack[fStackIndex]=time; |
cf98c13f | 159 | if (fStackIndex==0) return; |
160 | Double_t dr = (r-fParam->fR); | |
161 | if (TMath::Abs(dr)<AliTPCTrackHits::fgkPrecision) dr =AliTPCTrackHits::fgkPrecision; | |
162 | Double_t dfi = fi-fParam->fFi; | |
163 | Double_t dz = z -fParam->fZ; | |
164 | Double_t dr2 =dr*dr; | |
165 | Double_t dr3 =dr2*dr; | |
166 | Double_t dr4 =dr3*dr; | |
167 | fSumDr +=dr; | |
168 | fSumDr2+=dr2; | |
169 | fSumDr3+=dr3; | |
170 | fSumDr4+=dr4; | |
171 | fSumDFi +=dfi; | |
172 | fSumDFiDr+=dfi*dr; | |
173 | fSumDFiDr2+=dfi*dr2; | |
174 | fSumDZ +=dz; | |
175 | fSumDZDr+=dz*dr; | |
176 | fSumDZDr2+=dz*dr2; | |
177 | ||
178 | //update fit parameters | |
179 | // | |
180 | Double_t det = fSumDr2*fSumDr4-fSumDr3*fSumDr3; | |
181 | if (TMath::Abs(det)<AliTPCTrackHits::fgkPrecision2) return; | |
182 | if ( ( fStackIndex>1 ) ){ | |
183 | fParam->fAn = (fSumDr4*fSumDFiDr-fSumDr3*fSumDFiDr2)/det; | |
184 | fParam->fAd = (fSumDr2*fSumDFiDr2-fSumDr3*fSumDFiDr)/det; | |
185 | } | |
186 | else | |
187 | fParam->fAn = fSumDFiDr/fSumDr2; | |
188 | if ( ( fStackIndex>1 ) ){ | |
189 | fParam->fTheta = (fSumDr4*fSumDZDr-fSumDr3*fSumDZDr2)/det; | |
190 | fParam->fThetaD= (fSumDr2*fSumDZDr2-fSumDr3*fSumDZDr)/det; | |
191 | } | |
192 | else | |
193 | fParam->fTheta = fSumDZDr/fSumDr2; | |
194 | } | |
195 | ||
196 | ||
197 | void AliTPCTempHitInfo::UpdateParam(Double_t maxdelta) | |
198 | { | |
199 | //recalc parameters not fixing origin point | |
200 | if (fStackIndex>5){ | |
201 | Double_t a,b,c; | |
202 | a=b=c=0; | |
203 | Fit2(fSumDFi, fSumDFiDr, fSumDFiDr2, fSumDr,fSumDr2,fSumDr3,fSumDr4, | |
204 | fStackIndex, a,b,c); | |
205 | if (TMath::Abs(a)<maxdelta){ | |
206 | fParam->fFi +=a/fParam->fR; | |
207 | fParam->fAn = b; | |
208 | fParam->fAd = c; | |
209 | } | |
210 | Fit2(fSumDZ, fSumDZDr, fSumDZDr2, fSumDr,fSumDr2,fSumDr3,fSumDr4, | |
211 | fStackIndex, a,b,c) ; | |
212 | if (TMath::Abs(a)<maxdelta){ | |
213 | fParam->fZ +=a; | |
214 | fParam->fTheta = b; | |
215 | fParam->fThetaD = c; | |
216 | } | |
217 | } | |
218 | ||
219 | } | |
220 | void AliTPCTempHitInfo::Fit2(Double_t fSumY, Double_t fSumYX, Double_t fSumYX2, | |
221 | Double_t fSumX, Double_t fSumX2, Double_t fSumX3, | |
222 | Double_t fSumX4, Int_t n, | |
223 | Double_t &a, Double_t &b, Double_t &c) | |
224 | { | |
225 | //fit of second order | |
226 | Double_t det = | |
227 | n* (fSumX2*fSumX4-fSumX3*fSumX3) - | |
228 | fSumX* (fSumX*fSumX4-fSumX3*fSumX2)+ | |
229 | fSumX2* (fSumX*fSumX3-fSumX2*fSumX2); | |
230 | ||
231 | if (TMath::Abs(det)> AliTPCTrackHits::fgkPrecision) { | |
232 | a = | |
233 | (fSumY * (fSumX2*fSumX4-fSumX3*fSumX3)- | |
234 | fSumX *(fSumYX*fSumX4-fSumYX2*fSumX3)+ | |
235 | fSumX2*(fSumYX*fSumX3-fSumYX2*fSumX2))/det; | |
236 | b= | |
237 | (n*(fSumYX*fSumX4-fSumX3*fSumYX2)- | |
238 | fSumY*(fSumX*fSumX4-fSumX3*fSumX2)+ | |
239 | fSumX2*(fSumX*fSumYX2-fSumYX*fSumX2))/det; | |
240 | c= | |
241 | (n*(fSumX2*fSumYX2-fSumYX*fSumX3)- | |
242 | fSumX*(fSumX*fSumYX2-fSumYX*fSumX2)+ | |
243 | fSumY*(fSumX*fSumX3-fSumX2*fSumX2))/det; | |
244 | } | |
245 | } | |
246 | ||
247 | void AliTPCTempHitInfo::Fit(AliTrackHitsParam * param) | |
248 | { | |
249 | // fit fixing first and the last point | |
250 | //result stored in new param | |
251 | Double_t dx2 = (GetPosition(fStackIndex))[0]-fParam->fR; | |
252 | Double_t det = fSumDr4+dx2*fSumDr2-2*dx2*fSumDr3; | |
253 | if ( (TMath::Abs(det)> AliTPCTrackHits::fgkPrecision) && | |
254 | ((TMath::Abs(dx2)> AliTPCTrackHits::fgkPrecision))){ | |
255 | Double_t dfi2 = (GetPosition(fStackIndex))[1]-fParam->fFi; | |
256 | param->fAd = (fSumDFiDr2+dfi2*fSumDr-dx2*fSumDFiDr-dfi2*fSumDr3/dx2)/det; | |
257 | param->fAn = (dfi2-param->fAd*dx2*dx2)/dx2; | |
258 | ||
259 | Double_t dz2 = (GetPosition(fStackIndex))[1]-fParam->fZ; | |
260 | param->fTheta = (fSumDZDr2+dz2*fSumDr-dx2*fSumDZDr-dz2*fSumDr3/dx2)/det; | |
261 | param->fTheta = (dz2-param->fAd*dx2*dx2)/dx2; | |
262 | } | |
263 | ||
264 | } | |
265 | ||
783ce8a7 | 266 | //______________________________________________________________________ |
267 | AliTrackHitsInfo::AliTrackHitsInfo() : | |
268 | fTrackID(0), | |
269 | fVolumeID(0), | |
270 | fHitParamIndex(0) | |
271 | { | |
272 | // | |
273 | // Default constructor | |
274 | // | |
275 | fgCounter1++; | |
276 | fgCounter2++; | |
277 | } | |
cf98c13f | 278 | |
783ce8a7 | 279 | //______________________________________________________________________ |
280 | AliTrackHitsParam::AliTrackHitsParam() : | |
281 | fR(0), | |
282 | fZ(0), | |
283 | fFi(0), | |
284 | fAn(0), | |
285 | fAd(0), | |
286 | fTheta(0), | |
287 | fThetaD(0) | |
288 | { | |
289 | // | |
290 | // Default constructor | |
291 | // | |
292 | fgCounter1++; | |
293 | fgCounter2++; | |
294 | } | |
cf98c13f | 295 | |
296 | ||
297 | AliTPCTrackHits::AliTPCTrackHits() | |
298 | { | |
299 | // | |
300 | //default constructor | |
301 | // | |
302 | const Float_t kHitPrecision=0.002; //default precision for hit position in cm | |
303 | const Float_t kStep =0.003; //30 mum step | |
304 | const UShort_t kMaxDistance =100; //maximum distance 100 | |
305 | ||
306 | fPrecision=kHitPrecision; //precision in cm | |
307 | fStep = kStep; //step size | |
308 | fMaxDistance = kMaxDistance; //maximum distance | |
309 | fTempInfo =0; | |
310 | fTrackHitsInfo = new AliObjectArray("AliTrackHitsInfo"); | |
311 | fTrackHitsParam = new AliObjectArray("AliTrackHitsParam"); | |
633d3715 | 312 | fHitsPosAndQ = new TArrayOfArrayVStack("AliHitInfo"); |
cf98c13f | 313 | fCurrentHit = new AliTPCCurrentHit; |
314 | fgCounter1++; | |
315 | fgCounter2++; | |
316 | ||
317 | } | |
318 | ||
835b3d81 | 319 | AliTPCTrackHits::AliTPCTrackHits(const AliTPCTrackHits& r) : TObject(r) |
320 | { | |
e15899a0 | 321 | //dummy |
322 | } | |
323 | AliTPCTrackHits &AliTPCTrackHits::operator=(const AliTPCTrackHits& /* r */) | |
324 | { | |
325 | //dummy | |
326 | return *this; | |
835b3d81 | 327 | } |
835b3d81 | 328 | |
cf98c13f | 329 | AliTPCTrackHits::~AliTPCTrackHits() |
330 | { | |
331 | // | |
332 | //default destructor | |
333 | // | |
334 | if (fTrackHitsInfo) delete fTrackHitsInfo; | |
335 | if (fTrackHitsParam) delete fTrackHitsParam; | |
336 | if (fHitsPosAndQ) delete fHitsPosAndQ; | |
337 | if (fCurrentHit) delete fCurrentHit; | |
338 | if (fTempInfo) delete fTempInfo; | |
339 | fgCounter1--; | |
340 | } | |
341 | ||
342 | void AliTPCTrackHits::Clear() | |
343 | { | |
344 | // | |
345 | //clear object | |
633d3715 | 346 | fTrackHitsInfo->Clear(); |
347 | fTrackHitsParam->Clear(); | |
348 | //fTrackHitsInfo->Resize(0); | |
349 | //fTrackHitsParam->Resize(0); | |
cf98c13f | 350 | fHitsPosAndQ->Clear(); |
351 | ||
352 | if (fTempInfo){ | |
353 | delete fTempInfo; | |
354 | fTempInfo =0; | |
355 | } | |
356 | } | |
357 | ||
358 | ||
359 | void AliTPCTrackHits::AddHitKartez(Int_t volumeID, Int_t trackID, Double_t x, | |
e61fd20d | 360 | Double_t y, Double_t z,Int_t q, Float_t time) |
cf98c13f | 361 | { |
835b3d81 | 362 | //add hits (cartesian) |
cf98c13f | 363 | Double_t r = TMath::Sqrt(x*x+y*y); |
364 | Double_t fi = TMath::ACos(x/r); | |
365 | if (y<0) fi*=-1.; | |
e61fd20d | 366 | AddHit(volumeID,trackID,r,z,fi,q,time); |
cf98c13f | 367 | } |
368 | ||
369 | void AliTPCTrackHits::AddHit(Int_t volumeID, Int_t trackID, | |
e61fd20d | 370 | Double_t r, Double_t z, Double_t fi, Int_t q, Float_t time) |
cf98c13f | 371 | { |
372 | // | |
373 | Bool_t diff=kFALSE; | |
374 | if (!fTempInfo) { //initialsation of track | |
375 | fTempInfo = new AliTPCTempHitInfo; | |
376 | // | |
377 | if (fTrackHitsInfo->GetCapacity()<10) fTrackHitsInfo->Reserve(10); | |
378 | fTrackHitsInfo->Resize(1); | |
379 | fTempInfo->fInfoIndex =0; | |
380 | if (fTrackHitsParam->GetCapacity()<100) fTrackHitsParam->Reserve(100); | |
381 | fTrackHitsParam->Resize(1); | |
382 | // | |
383 | fTempInfo->fInfo = | |
384 | (AliTrackHitsInfo*) (fTrackHitsInfo->At(0)); | |
385 | fTempInfo->fInfo->fVolumeID = volumeID; | |
386 | fTempInfo->fInfo->fTrackID = trackID; | |
387 | fTempInfo->fInfo->fHitParamIndex =0; | |
388 | fTempInfo->fInfoIndex = 0; | |
389 | // | |
390 | fTempInfo->fParam = | |
391 | (AliTrackHitsParam*) (fTrackHitsParam->At(0)); | |
392 | fTempInfo->fParamIndex = 0; | |
e61fd20d | 393 | fTempInfo->NewParam(r,z,fi,q,time); |
cf98c13f | 394 | return; |
395 | } | |
396 | ||
397 | Int_t size = fHitsPosAndQ->GetSize(); | |
398 | if (size>(Int_t)fTempInfo->fParamIndex) { | |
399 | fTempInfo->fParamIndex++; | |
400 | if (fTempInfo->fParamIndex+1>fTrackHitsParam->GetSize()) | |
401 | fTrackHitsParam->Resize(fTempInfo->fParamIndex+1); | |
402 | fTempInfo->fParam = | |
403 | (AliTrackHitsParam*) (fTrackHitsParam->At(fTempInfo->fParamIndex)); | |
e61fd20d | 404 | fTempInfo->NewParam(r,z,fi,q,time); |
cf98c13f | 405 | return; |
406 | } | |
407 | ||
408 | ||
409 | // if new volume or new trackID | |
410 | if ( (volumeID!=fTempInfo->fInfo->fVolumeID) || | |
411 | (trackID!=fTempInfo->fInfo->fTrackID)){ | |
412 | diff=kTRUE; | |
413 | ||
414 | FlushHitStack(kTRUE); | |
415 | ||
416 | fTempInfo->fInfoIndex++; | |
417 | if (fTempInfo->fInfoIndex+1>fTrackHitsInfo->GetSize()) | |
418 | fTrackHitsInfo->Resize(fTempInfo->fInfoIndex+1); | |
419 | fTempInfo->fInfo = | |
420 | (AliTrackHitsInfo*) (fTrackHitsInfo->At(fTempInfo->fInfoIndex)); | |
421 | fTempInfo->fInfo->fVolumeID = volumeID; | |
422 | fTempInfo->fInfo->fTrackID = trackID; | |
423 | fTempInfo->fInfo->fHitParamIndex =fTempInfo->fParamIndex+1; | |
424 | // FlushHitStack(kTRUE); | |
425 | ||
426 | fTempInfo->fParamIndex++; | |
427 | if (fTempInfo->fParamIndex+1>fTrackHitsParam->GetSize()) | |
428 | fTrackHitsParam->Resize(fTempInfo->fParamIndex+1); | |
429 | fTempInfo->fParam = | |
430 | (AliTrackHitsParam*) (fTrackHitsParam->At(fTempInfo->fParamIndex)); | |
e61fd20d | 431 | fTempInfo->NewParam(r,z,fi,q,time); |
cf98c13f | 432 | return; |
433 | } | |
434 | ||
435 | //calculate current fit precission to next point | |
436 | AliTrackHitsParam ¶m = *(fTempInfo->fParam); | |
437 | Double_t dd=0; | |
438 | Double_t dl=0; | |
439 | Double_t ratio=0; | |
440 | Double_t dr,dz,dfi,ddz,ddfi; | |
441 | Double_t drhit,ddl; | |
442 | dr=dz=dfi=ddz=ddfi=0; | |
443 | drhit = r-fTempInfo->fOldR; | |
444 | { | |
445 | //Double_t dfi2 = param.fAn+2*param.fAd*(r-param.fR); | |
446 | Double_t dfi2 = param.fAn; | |
447 | dfi2*=dfi2*fTempInfo->fOldR*fTempInfo->fOldR; | |
448 | //Double_t ddz2 = param.fTheta+2*param.fThetaD*(r-param.fR); | |
449 | Double_t ddz2 = param.fTheta; | |
450 | ddz2*=ddz2; | |
451 | ratio = TMath::Sqrt(1.+ dfi2+ ddz2); | |
452 | } | |
8217f168 | 453 | // |
454 | ||
455 | ||
456 | dl = (TMath::Abs(drhit*ratio/fStep)<32000) ? fStep * Short_t(TMath::Nint(drhit*ratio/fStep)):0; | |
cf98c13f | 457 | ddl = dl - drhit*ratio; |
458 | fTempInfo->fOldR += dl/ratio; | |
459 | ||
460 | if (fTempInfo->fStackIndex>2){ | |
461 | dr = r-param.fR; | |
462 | dz = z-param.fZ; | |
463 | dfi = fi-param.fFi; | |
464 | ddz = dr*param.fTheta+dr*dr*param.fThetaD-dz; | |
465 | ddfi= dr*param.fAn+dr*dr*param.fAd-dfi; | |
466 | dd = TMath::Sqrt(ddz*ddz+r*r*ddfi*ddfi+ddl*ddl); | |
467 | // | |
468 | } | |
469 | //safety factor 1.25 | |
470 | if ( ( (dd*1.25>fPrecision) ) || | |
982aff31 | 471 | (fTempInfo->fStackIndex+4>fTempInfo->kStackSize) || |
cf98c13f | 472 | (TMath::Abs(dl/fStep)>fMaxDistance) ) |
473 | diff=kTRUE; | |
474 | else{ | |
475 | fTempInfo->fStackIndex++; | |
e61fd20d | 476 | fTempInfo->SetHit(r,z,fi,q,time); |
cf98c13f | 477 | return; |
478 | } | |
479 | //if parameter changed | |
480 | if (FlushHitStack(kFALSE)){ //if full buffer flushed | |
481 | fTempInfo->fParamIndex++; | |
482 | if (fTempInfo->fParamIndex+1>fTrackHitsParam->GetSize()) | |
483 | fTrackHitsParam->Resize(fTempInfo->fParamIndex+1); | |
484 | fTempInfo->fParam = | |
485 | (AliTrackHitsParam*) (fTrackHitsParam->At(fTempInfo->fParamIndex)); | |
e61fd20d | 486 | fTempInfo->NewParam(r,z,fi,q,time); |
cf98c13f | 487 | } |
488 | else{ | |
489 | fTempInfo->fStackIndex++; | |
e61fd20d | 490 | fTempInfo->SetHit(r,z,fi,q,time); |
cf98c13f | 491 | } |
492 | } | |
493 | ||
494 | Bool_t AliTPCTrackHits::FlushHitStack(Bool_t force) | |
495 | { | |
496 | // | |
497 | //write fHitsPosAndQ information from the stack to te arrays | |
498 | if (!fTempInfo) return kFALSE; | |
499 | Int_t size = fHitsPosAndQ->GetSize(); | |
500 | ||
501 | if ( (size>0)&&(size!=(Int_t)fTempInfo->fParamIndex)) return kFALSE; | |
502 | ||
503 | if (fHitsPosAndQ->Push(fTempInfo->fStackIndex+1)!=fTempInfo->fParamIndex){ | |
504 | cout<<"internal error - contact MI\n"; | |
505 | return kFALSE; | |
506 | } | |
507 | AliHitInfo * info; | |
508 | ||
509 | AliTrackHitsParam & param = *(fTempInfo->fParam); | |
510 | //recalculate track parameter not fixing first point | |
511 | fTempInfo->UpdateParam(fStep/4.); | |
512 | //fTempInfo->Fit(fTempInfo->fParam); //- fixing the first and the last point | |
513 | ||
514 | Double_t oldr = param.fR; | |
515 | //cout<<"C3"<<fTempInfo->fStackIndex<<"\n"<<flush; | |
516 | UInt_t i; | |
517 | Double_t dd; | |
518 | for (i=0; i <= fTempInfo->fStackIndex; i++){ | |
519 | Double_t * position = fTempInfo->GetPosition(i); | |
520 | Double_t dr = position[0]-oldr; | |
521 | Double_t ratio; | |
522 | { | |
523 | //Double_t dfi2 = param.fAn+2*param.fAd*(position[0]-param.fR); | |
524 | Double_t dfi2 = param.fAn; | |
525 | dfi2*=dfi2*oldr*oldr; | |
526 | //Double_t ddz2 = param.fTheta+2*param.fThetaD*(position[0]-param.fR); | |
527 | Double_t ddz2 = param.fTheta; | |
528 | ddz2*=ddz2; | |
529 | ratio = TMath::Sqrt(1.+ dfi2+ ddz2); | |
530 | } | |
531 | ||
8217f168 | 532 | Double_t dl = (TMath::Abs(dr*ratio/fStep)<32000) ? fStep*(Short_t)TMath::Nint(dr*ratio/fStep):0; |
cf98c13f | 533 | dr = dl/ratio; |
534 | oldr+=dr; | |
535 | //calculate precission | |
536 | AliTrackHitsParam ¶m = *(fTempInfo->fParam); | |
537 | //real deltas | |
538 | Double_t dr1= position[0]-param.fR; | |
539 | Double_t dz = position[1]-param.fZ; | |
540 | ||
541 | Double_t dfi = position[2]-param.fFi; | |
542 | //extrapolated deltas | |
543 | Double_t dr2 = oldr-param.fR; | |
544 | Double_t ddr = dr2-dr1; | |
545 | Double_t ddz = dr2*param.fTheta+dr2*dr2*param.fThetaD-dz; | |
546 | Double_t ddfi= dr2*param.fAn+dr2*dr2*param.fAd-dfi; | |
547 | dd = TMath::Sqrt(ddz*ddz+oldr*oldr*ddfi*ddfi+ddr*ddr); | |
548 | ||
549 | if ( (dd>fPrecision) ){ | |
550 | if (i==0){ | |
551 | param.fAn = 0; | |
552 | param.fAd = 0; | |
553 | param.fTheta =0; | |
554 | param.fThetaD =0; | |
555 | Double_t ddz = dr2*param.fTheta+dr2*dr2*param.fThetaD-dz; | |
556 | Double_t ddfi= dr2*param.fAn+dr2*dr2*param.fAd-dfi; | |
557 | dl = 0; | |
558 | dd = TMath::Sqrt(ddz*ddz+oldr*oldr*ddfi*ddfi+ddr*ddr); | |
559 | } | |
560 | else | |
561 | break; | |
562 | } | |
563 | ||
564 | info = (AliHitInfo*)(fHitsPosAndQ->At(fTempInfo->fParamIndex,i)); | |
8217f168 | 565 | info->fHitDistance = (TMath::Abs(dl/fStep)<32000) ?Short_t(TMath::Nint(dl/fStep)):0; |
cf98c13f | 566 | info->fCharge = Short_t(fTempInfo->fQStack[i]); |
e61fd20d | 567 | info->fTime = TMath::Nint(fTempInfo->fTimeStack[i]/AliTPCTrackHits::fgkTimePrecision); |
cf98c13f | 568 | /* |
569 | cout<<"C2"; | |
570 | cout<<" "<<fTempInfo->fStackIndex<<" \t"; | |
571 | cout<<" "<<i<<" \t"; | |
572 | cout<<position[0]<<"\t"; | |
573 | cout<<position[1]<<"\t"; | |
574 | cout<<position[2]<<"\t"; | |
575 | cout<<param.fAn<<"\t"; | |
576 | cout<<param.fTheta<<"\t"; | |
577 | cout<<dr1<<"\t"<<ddr<<"\t"<<ddz<<"\t"<<ddfi<<"\t"<<dd<<"\n"<<flush; | |
578 | */ | |
579 | } | |
580 | ||
581 | if (i<=fTempInfo->fStackIndex){ //if previous iteration not succesfull | |
582 | fHitsPosAndQ->Resize(fTempInfo->fParamIndex,i); | |
583 | // | |
584 | fTempInfo->fParamIndex++; | |
585 | if (fTempInfo->fParamIndex+1>fTrackHitsParam->GetSize()) | |
586 | fTrackHitsParam->Resize(fTempInfo->fParamIndex+1); | |
587 | fTempInfo->fParam = | |
588 | (AliTrackHitsParam*) (fTrackHitsParam->At(fTempInfo->fParamIndex)); | |
589 | Double_t * p = fTempInfo->GetPosition(i); | |
590 | UInt_t index2 = fTempInfo->fStackIndex; | |
e61fd20d | 591 | fTempInfo->NewParam(p[0],p[1],p[2],fTempInfo->fQStack[i],fTempInfo->fTimeStack[i]); |
cf98c13f | 592 | if (i+1<=index2) FlushHitStack2(i+1,index2); |
593 | ||
594 | if (force) return FlushHitStack(kTRUE); | |
595 | return kFALSE; | |
596 | } | |
597 | return kTRUE; | |
598 | } | |
599 | ||
600 | ||
601 | void AliTPCTrackHits::FlushHitStack2(Int_t index1, Int_t index2) | |
602 | { | |
603 | // | |
604 | // second iteration flush stack | |
605 | // call only for hits where first iteration were not succesfully interpolated | |
606 | Double_t * positionstack = new Double_t[3*(index2-index1+1)]; | |
607 | UInt_t * qstack = new UInt_t[index2-index1+1]; | |
e61fd20d | 608 | Float_t * timestack = new Float_t[index2-index1+1]; |
cf98c13f | 609 | memcpy(positionstack, &fTempInfo->fPositionStack[3*index1], |
610 | (3*(index2-index1+1))*sizeof(Double_t)); | |
611 | memcpy(qstack, &fTempInfo->fQStack[index1],(index2-index1+1)*sizeof(UInt_t)); | |
e61fd20d | 612 | memcpy(timestack, &fTempInfo->fTimeStack[index1],(index2-index1+1)*sizeof(Float_t)); |
cf98c13f | 613 | Double_t *p = positionstack; |
614 | for (Int_t j=0; j<=index2-index1;j++){ | |
615 | fTempInfo->fStackIndex++; | |
e61fd20d | 616 | fTempInfo->SetHit(p[3*j+0],p[3*j+1],p[3*j+2],qstack[j],timestack[j]); |
cf98c13f | 617 | } |
618 | delete []positionstack; | |
619 | delete []qstack; | |
e61fd20d | 620 | delete []timestack; |
cf98c13f | 621 | } |
622 | ||
623 | ||
624 | ||
625 | ||
626 | ||
627 | ||
628 | ||
629 | ||
630 | ||
631 | Bool_t AliTPCTrackHits::First() | |
632 | { | |
633 | // | |
634 | //set Current hit for the first hit | |
635 | // | |
636 | AliTrackHitsInfo *info = (AliTrackHitsInfo *)fTrackHitsInfo->At(0); | |
637 | AliTrackHitsParam *param = (AliTrackHitsParam *)fTrackHitsParam->At(0); | |
638 | AliHitInfo * hinfo = (AliHitInfo *)fHitsPosAndQ->At(0,0); | |
639 | ||
640 | if (!(info) || !(param) || !(hinfo) ) { | |
641 | fCurrentHit->fStatus = kFALSE; | |
642 | return kFALSE; | |
643 | } | |
644 | ||
645 | fCurrentHit->fInfoIndex = 0; | |
646 | fCurrentHit->fParamIndex = 0; | |
647 | fCurrentHit->fStackIndex = 0; | |
648 | ||
649 | fCurrentHit->fHit.fSector = info->fVolumeID; | |
650 | fCurrentHit->fHit.SetTrack(info->fTrackID); | |
651 | fCurrentHit->fHit.SetX(param->fR*TMath::Cos(param->fFi)); | |
652 | fCurrentHit->fHit.SetY(param->fR*TMath::Sin(param->fFi)); | |
653 | fCurrentHit->fHit.SetZ(param->fZ); | |
e61fd20d | 654 | fCurrentHit->fHit.fQ = (Float_t)(hinfo->fCharge*AliTPCTrackHits::fgkTimePrecision); |
655 | fCurrentHit->fHit.fTime = hinfo->fTime; | |
cf98c13f | 656 | |
657 | fCurrentHit->fR = param->fR; | |
658 | ||
659 | return fCurrentHit->fStatus = kTRUE; | |
660 | } | |
661 | ||
25419831 | 662 | |
663 | /* | |
cf98c13f | 664 | Bool_t AliTPCTrackHits::Next() |
665 | { | |
666 | // | |
667 | // | |
668 | if (!(fCurrentHit->fStatus)) | |
669 | return kFALSE; | |
670 | ||
671 | fCurrentHit->fStackIndex++; | |
672 | AliHitInfo * hinfo = (AliHitInfo *)fHitsPosAndQ->At(fCurrentHit->fParamIndex, | |
673 | fCurrentHit->fStackIndex); | |
674 | AliTrackHitsInfo *info = (AliTrackHitsInfo *)fTrackHitsInfo->At(fCurrentHit->fInfoIndex); | |
675 | AliTrackHitsParam *param = (AliTrackHitsParam *)fTrackHitsParam->At(fCurrentHit->fParamIndex); | |
676 | ||
677 | if (!hinfo) { | |
678 | hinfo = (AliHitInfo *)fHitsPosAndQ->At(fCurrentHit->fParamIndex+1, 0); | |
679 | if (!hinfo) | |
680 | return fCurrentHit->fStatus = kFALSE; | |
681 | if (hinfo){ | |
682 | fCurrentHit->fParamIndex++; | |
683 | fCurrentHit->fStackIndex = 0; | |
684 | param = (AliTrackHitsParam *)fTrackHitsParam->At(fCurrentHit->fParamIndex); | |
685 | if (!param) | |
686 | return fCurrentHit->fStatus = kFALSE; | |
687 | fCurrentHit->fR = param->fR; | |
688 | ||
689 | if ((fCurrentHit->fInfoIndex+1<fTrackHitsInfo->GetSize()) | |
690 | &&((info+1)->fHitParamIndex<=fCurrentHit->fParamIndex)){ | |
691 | fCurrentHit->fInfoIndex++; | |
692 | info = (AliTrackHitsInfo *)fTrackHitsInfo->At(fCurrentHit->fInfoIndex); | |
693 | if (!info) | |
694 | return fCurrentHit->fStatus = kFALSE; | |
695 | fCurrentHit->fHit.fSector = info->fVolumeID; | |
696 | fCurrentHit->fHit.SetTrack(info->fTrackID); | |
697 | } | |
698 | } | |
699 | } | |
700 | Double_t ratio; | |
701 | { | |
702 | // Double_t dfi2 = param->fAn+2*param->fAd*(fCurrentHit->fR-param->fR); | |
703 | Double_t dfi2 = param->fAn; | |
704 | dfi2*=dfi2*fCurrentHit->fR*fCurrentHit->fR; | |
705 | // Double_t ddz2 = param->fTheta+2*param->fThetaD*(fCurrentHit->fR-param->fR); | |
706 | Double_t ddz2 = param->fTheta; | |
707 | ddz2*=ddz2; | |
708 | ratio = TMath::Sqrt(1.+ dfi2+ ddz2); | |
709 | } | |
710 | ||
711 | fCurrentHit->fHit.fQ = hinfo->fCharge; | |
e61fd20d | 712 | fCurrentHit->fHit.fTime = (Float_t)(hinfo->fTime*AliTPCTrackHits::fgkTimePrecision); |
cf98c13f | 713 | fCurrentHit->fR += fStep*hinfo->fHitDistance/ratio; |
714 | Double_t dR = fCurrentHit->fR - param->fR; | |
715 | //Double_t dR =0; | |
716 | Double_t fi = param->fFi + (param->fAn*dR+param->fAd*dR*dR); | |
717 | Double_t z = param->fZ + (param->fTheta*dR+param->fThetaD*dR*dR); | |
718 | ||
719 | fCurrentHit->fHit.SetX(fCurrentHit->fR*TMath::Cos(fi)); | |
720 | fCurrentHit->fHit.SetY(fCurrentHit->fR*TMath::Sin(fi)); | |
721 | fCurrentHit->fHit.SetZ(z); | |
722 | return kTRUE; | |
723 | } | |
25419831 | 724 | |
725 | */ | |
835b3d81 | 726 | AliTPChit * AliTPCTrackHits::GetHit() const |
cf98c13f | 727 | { |
728 | // | |
729 | return (fCurrentHit->fStatus)? &fCurrentHit->fHit:0; | |
730 | //return &fCurrentHit->fHit; | |
731 | ||
732 | } | |
733 | ||
25419831 | 734 | |
735 | ||
736 | Bool_t AliTPCTrackHits::Next(Int_t id) | |
737 | { | |
738 | // | |
739 | // | |
740 | if (!(fCurrentHit->fStatus)) | |
741 | return kFALSE; | |
742 | ||
743 | // fCurrentHit->fStackIndex++; | |
744 | AliHitInfo * hinfo = (AliHitInfo *)fHitsPosAndQ->At(fCurrentHit->fParamIndex, | |
745 | fCurrentHit->fStackIndex); | |
746 | AliTrackHitsInfo *info = (AliTrackHitsInfo *)fTrackHitsInfo->At(fCurrentHit->fInfoIndex); | |
747 | if (!info) { | |
748 | fCurrentHit->fStatus = kFALSE; | |
749 | return kFALSE; | |
750 | } | |
751 | AliTrackHitsParam *param = (AliTrackHitsParam *)fTrackHitsParam->At(fCurrentHit->fParamIndex); | |
752 | ||
753 | if ( (id>=0) && (info!=0) && (info->fVolumeID!=id)){ | |
754 | fCurrentHit->fInfoIndex++; | |
755 | info = (AliTrackHitsInfo *)fTrackHitsInfo->At(fCurrentHit->fInfoIndex); | |
756 | if (!info) { | |
757 | fCurrentHit->fStatus = kFALSE; | |
758 | return kFALSE; | |
759 | } | |
760 | fCurrentHit->fParamIndex = info->fHitParamIndex; | |
761 | param = (AliTrackHitsParam *)fTrackHitsParam->At(fCurrentHit->fParamIndex); | |
762 | fCurrentHit->fStackIndex =0; | |
763 | fCurrentHit->fR = param->fR; | |
764 | return Next(id); | |
765 | } | |
766 | if (!info) { | |
767 | fCurrentHit->fStatus = kFALSE; | |
768 | return kFALSE; | |
769 | } | |
770 | if (!hinfo) { | |
771 | hinfo = (AliHitInfo *)fHitsPosAndQ->At(fCurrentHit->fParamIndex+1, 0); | |
772 | if (!hinfo){ | |
773 | fCurrentHit->fStatus = kFALSE; | |
774 | return kFALSE; | |
775 | } | |
776 | if (hinfo){ | |
777 | fCurrentHit->fParamIndex++; | |
778 | fCurrentHit->fStackIndex = 0; | |
779 | param = (AliTrackHitsParam *)fTrackHitsParam->At(fCurrentHit->fParamIndex); | |
780 | if (!param){ | |
781 | fCurrentHit->fStatus = kFALSE; | |
782 | return kFALSE; | |
783 | } | |
784 | fCurrentHit->fR = param->fR; | |
785 | ||
786 | if ((fCurrentHit->fInfoIndex+1<fTrackHitsInfo->GetSize()) | |
787 | &&((info+1)->fHitParamIndex<=fCurrentHit->fParamIndex)){ | |
788 | fCurrentHit->fInfoIndex++; | |
789 | info = (AliTrackHitsInfo *)fTrackHitsInfo->At(fCurrentHit->fInfoIndex); | |
790 | if (!info){ | |
791 | fCurrentHit->fStatus = kFALSE; | |
792 | return kFALSE; | |
793 | } | |
794 | if ( (id>=0) && (info!=0) && (info->fVolumeID!=id)){ | |
795 | return Next(id); | |
796 | } | |
797 | fCurrentHit->fHit.fSector = info->fVolumeID; | |
798 | fCurrentHit->fHit.SetTrack(info->fTrackID); | |
799 | } | |
800 | } | |
801 | } | |
802 | Double_t ratio; | |
803 | { | |
804 | // Double_t dfi2 = param->fAn+2*param->fAd*(fCurrentHit->fR-param->fR); | |
805 | Double_t dfi2 = param->fAn; | |
806 | dfi2*=dfi2*fCurrentHit->fR*fCurrentHit->fR; | |
807 | // Double_t ddz2 = param->fTheta+2*param->fThetaD*(fCurrentHit->fR-param->fR); | |
808 | Double_t ddz2 = param->fTheta; | |
809 | ddz2*=ddz2; | |
810 | ratio = TMath::Sqrt(1.+ dfi2+ ddz2); | |
811 | } | |
812 | ||
813 | fCurrentHit->fHit.fQ = hinfo->fCharge; | |
e61fd20d | 814 | fCurrentHit->fHit.fTime = (Float_t)(hinfo->fTime*AliTPCTrackHits::fgkTimePrecision); |
25419831 | 815 | fCurrentHit->fR += fStep*hinfo->fHitDistance/ratio; |
816 | Double_t dR = fCurrentHit->fR - param->fR; | |
817 | //Double_t dR =0; | |
818 | Double_t fi = param->fFi + (param->fAn*dR+param->fAd*dR*dR); | |
819 | Double_t z = param->fZ + (param->fTheta*dR+param->fThetaD*dR*dR); | |
820 | ||
821 | fCurrentHit->fHit.SetX(fCurrentHit->fR*TMath::Cos(fi)); | |
822 | fCurrentHit->fHit.SetY(fCurrentHit->fR*TMath::Sin(fi)); | |
823 | fCurrentHit->fHit.SetZ(z); | |
824 | fCurrentHit->fHit.fSector = info->fVolumeID; | |
825 | fCurrentHit->fHit.SetTrack(info->fTrackID); | |
826 | // | |
827 | fCurrentHit->fStatus = kTRUE; | |
828 | fCurrentHit->fStackIndex++; | |
829 | return kTRUE; | |
830 | } | |
831 | ||
832 | ||
cf98c13f | 833 | AliTrackHitsParam * AliTPCTrackHits::GetParam() |
834 | { | |
835 | // | |
836 | return (fCurrentHit->fStatus)? (AliTrackHitsParam *)fTrackHitsParam->At(fCurrentHit->fParamIndex) :0; | |
837 | } | |
838 | ||
839 | AliHitInfo * AliTPCTrackHits::GetHitInfo() | |
840 | { | |
841 | // | |
842 | return (fCurrentHit->fStatus)? | |
843 | (AliHitInfo *)fHitsPosAndQ->At(fCurrentHit->fParamIndex,fCurrentHit->fStackIndex) :0; | |
844 | } | |
845 | ||
846 | ||
847 |