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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 | |
592e2b50 | 56 | #include <stdlib.h> |
f641f6bd | 57 | //#include "TVector3.h" |
58 | #include "AliTPCTrackHitsV2.h" | |
59 | ||
60 | #include "TClonesArray.h" | |
61 | #include "AliTPC.h" | |
62 | ||
19364939 | 63 | #include <Riostream.h> |
f641f6bd | 64 | |
65 | ||
66 | ||
67 | ClassImp(AliTPCTrackHitsV2) | |
68 | ClassImp(AliTrackHitsParamV2) | |
69 | ||
70 | // | |
71 | Int_t AliTrackHitsParamV2::fgCounter1 =0; | |
72 | Int_t AliTrackHitsParamV2::fgCounter2 =0; | |
73 | // | |
74 | Int_t AliTPCTrackHitsV2::fgCounter1 =0; | |
75 | Int_t AliTPCTrackHitsV2::fgCounter2 =0; | |
76 | // | |
77 | const Double_t AliTPCTrackHitsV2::fgkPrecision=1e-6; //precision | |
78 | const Double_t AliTPCTrackHitsV2::fgkPrecision2=1e-20; //precision | |
79 | ||
80 | ||
81 | ||
82 | ||
f641f6bd | 83 | struct AliTPCTempHitInfoV2 { |
53110b9d | 84 | enum { kStackSize = 10000}; |
f641f6bd | 85 | AliTPCTempHitInfoV2(); |
53110b9d | 86 | AliTPCTempHitInfoV2(const AliTPCTempHitInfoV2 &hit) |
87 | {hit.Copy(*this);} | |
88 | AliTPCTempHitInfoV2& operator = (const AliTPCTempHitInfoV2 &hit) | |
89 | {hit.Copy(*this); return (*this);} | |
f641f6bd | 90 | void NewParam(Double_t r, Double_t z, Double_t fi, Int_t q); |
91 | void SetHit(Double_t r, Double_t z, Double_t fi, Int_t q); | |
92 | Double_t * GetPosition(Int_t index){return &fPositionStack[index*3];} | |
93 | void UpdateParam(Double_t maxdelta); //recal | |
94 | void Fit2(Double_t fSumY, Double_t fSumYX, Double_t fSumYX2, | |
95 | Double_t fSumX, Double_t fSumX2, Double_t fSumX3, | |
96 | Double_t fSumX4, Int_t n, | |
97 | Double_t &a, Double_t &b, Double_t &c); | |
98 | void Fit(AliTrackHitsParamV2 * param); | |
53110b9d | 99 | Double_t fSumDr; // Sum of Dr |
100 | Double_t fSumDr2; // Square of sum of Dr | |
101 | Double_t fSumDr3; // Cube of sum of Dr | |
102 | Double_t fSumDr4; // Fourth power of sum of Dr | |
103 | Double_t fSumDFi; // Sum of DFi | |
104 | Double_t fSumDFiDr; // Sum of DFiDr | |
105 | Double_t fSumDFiDr2;// Sum of square of DFiDr | |
106 | Double_t fSumDZ; // Sum of DZ | |
107 | Double_t fSumDZDr; // Sum of DZDr | |
108 | Double_t fSumDZDr2; // Sum of square of DZDr | |
f641f6bd | 109 | Double_t fOldR; //previos r |
53110b9d | 110 | Double_t fPositionStack[3*kStackSize]; //position stack |
111 | UInt_t fQStack[kStackSize]; //Q stack | |
f641f6bd | 112 | UInt_t fStackIndex; //current stack index |
113 | // UInt_t fInfoIndex; //current track info index | |
114 | UInt_t fParamIndex; //current track parameters index | |
115 | // AliTrackHitsInfo * fInfo; //current track info | |
116 | AliTrackHitsParamV2 * fParam; //current track param | |
53110b9d | 117 | private: |
118 | void Copy(AliTPCTempHitInfoV2 &) const | |
119 | {printf("Not Implemented\n"); exit(1);} | |
f641f6bd | 120 | }; |
121 | ||
122 | ||
123 | AliTPCTempHitInfoV2::AliTPCTempHitInfoV2() | |
124 | { | |
125 | // | |
53110b9d | 126 | // Standard constructor |
127 | // set to default value | |
128 | // | |
f641f6bd | 129 | fSumDr=fSumDr2=fSumDr3=fSumDr4= |
130 | fSumDFi=fSumDFiDr=fSumDFiDr2= | |
131 | fSumDZ=fSumDZDr=fSumDZDr2=0; | |
132 | fStackIndex = 0; | |
133 | // fInfoIndex = 0; | |
134 | fParamIndex = 0; | |
135 | } | |
136 | ||
137 | ||
138 | void AliTPCTempHitInfoV2::NewParam(Double_t r, Double_t z, Double_t fi, Int_t q) | |
139 | { | |
140 | // | |
141 | //reset stack and sum parameters | |
142 | //store line initial point | |
53110b9d | 143 | // |
f641f6bd | 144 | fSumDr=fSumDr2=fSumDr3=fSumDr4= |
145 | fSumDFi=fSumDFiDr=fSumDFiDr2= | |
146 | fSumDZ=fSumDZDr=fSumDZDr2=0; | |
147 | fStackIndex=0; | |
148 | fParam->fR = r; | |
149 | fOldR = r; | |
150 | fParam->fZ = z; | |
151 | fParam->fFi = fi; | |
152 | fParam->fAn = 0.; | |
153 | fParam->fAd = 0.; | |
154 | fParam->fTheta =0.; | |
155 | fParam->fThetaD =0.; | |
156 | SetHit(r,z,fi,q); | |
157 | } | |
158 | ||
159 | void AliTPCTempHitInfoV2::SetHit(Double_t r, Double_t z, Double_t fi, Int_t q) | |
160 | { | |
161 | // | |
162 | //add hit to the stack | |
163 | //recalculate new estimete of line parameters | |
164 | Double_t *f = GetPosition(fStackIndex); | |
165 | f[0] = r; | |
166 | f[1] = z; | |
167 | f[2] = fi; | |
168 | fQStack[fStackIndex]=q; | |
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; | |
292 | fNHits=0; | |
293 | } | |
53110b9d | 294 | |
f641f6bd | 295 | AliTrackHitsParamV2::~AliTrackHitsParamV2() |
296 | { | |
53110b9d | 297 | // |
298 | // Standard destructor | |
299 | // | |
f641f6bd | 300 | fgCounter1--; |
301 | if (fHitDistance) { | |
302 | delete[]fHitDistance; | |
303 | fHitDistance=0; | |
304 | } | |
305 | if (fCharge){ | |
306 | delete[]fCharge; | |
307 | fCharge =0; | |
308 | } | |
309 | } | |
310 | ||
311 | ||
312 | AliTPCTrackHitsV2::AliTPCTrackHitsV2() | |
313 | { | |
314 | // | |
315 | //default constructor | |
316 | // | |
317 | const Float_t kHitPrecision=0.002; //default precision for hit position in cm | |
318 | const Float_t kStep =0.003; //30 mum step | |
319 | const UShort_t kMaxDistance =100; //maximum distance 100 | |
320 | ||
321 | fPrecision=kHitPrecision; //precision in cm | |
322 | fStep = kStep; //step size | |
323 | fMaxDistance = kMaxDistance; //maximum distance | |
324 | fTempInfo =0; | |
325 | fSize=0; | |
326 | //fTrackHitsInfo = new AliObjectArray("AliTrackHitsInfo"); | |
327 | //fTrackHitsParam = new AliObjectArray("AliTrackHitsParamV2"); | |
328 | //fHitsPosAndQ = new TArrayOfArrayVStack("AliHitInfo"); | |
329 | fArray = new TClonesArray("AliTrackHitsParamV2"); | |
330 | fCurrentHit = new AliTPCCurrentHitV2; | |
331 | fVolumes =0; | |
332 | fNVolumes =0; | |
fce0283f | 333 | fHit =0; |
f641f6bd | 334 | fgCounter1++; |
335 | fgCounter2++; | |
336 | ||
337 | } | |
338 | ||
339 | AliTPCTrackHitsV2::~AliTPCTrackHitsV2() | |
340 | { | |
341 | // | |
342 | //default destructor | |
343 | // | |
344 | // if (fTrackHitsInfo) delete fTrackHitsInfo; | |
345 | if (fArray) { | |
346 | delete fArray; | |
347 | fArray =0; | |
348 | } | |
349 | //if (fHitsPosAndQ) delete fHitsPosAndQ; | |
350 | if (fCurrentHit) delete fCurrentHit; | |
351 | if (fTempInfo) delete fTempInfo; | |
352 | if (fVolumes) { | |
353 | delete [] fVolumes; | |
354 | fVolumes =0; | |
355 | fNVolumes=0; | |
356 | } | |
fce0283f | 357 | if (fHit){ |
358 | delete fHit; | |
359 | fHit=0; | |
360 | } | |
f641f6bd | 361 | fgCounter1--; |
362 | } | |
363 | ||
364 | void AliTPCTrackHitsV2::Clear() | |
365 | { | |
366 | // | |
53110b9d | 367 | // clear object |
368 | // | |
6e493dba | 369 | fSize = 0; |
f641f6bd | 370 | if (fArray){ |
371 | for (Int_t i=0;i<fArray->GetEntriesFast();i++){ | |
372 | AliTrackHitsParamV2 * par = (AliTrackHitsParamV2 *)fArray->UncheckedAt(i); | |
373 | par->~AliTrackHitsParamV2(); // delete object | |
374 | } | |
375 | fArray->Clear(); | |
376 | } | |
377 | if (fTempInfo){ | |
378 | delete fTempInfo; | |
fce0283f | 379 | delete fHit; |
380 | fHit =0; | |
f641f6bd | 381 | fTempInfo =0; |
382 | } | |
383 | if (fVolumes){ | |
384 | delete [] fVolumes; | |
385 | fVolumes=0; | |
386 | fNVolumes=0; | |
387 | } | |
388 | } | |
389 | ||
390 | ||
391 | void AliTPCTrackHitsV2::AddHitKartez(Int_t volumeID, Int_t trackID, Double_t x, | |
392 | Double_t y, Double_t z,Int_t q) | |
393 | { | |
394 | // | |
53110b9d | 395 | // add hit to the container - it add hit at the end - input in global coordinata |
396 | // | |
f641f6bd | 397 | Double_t r = TMath::Sqrt(x*x+y*y); |
398 | Double_t fi = TMath::ACos(x/r); | |
399 | if (y<0) fi*=-1.; | |
400 | AddHit(volumeID,trackID,r,z,fi,q); | |
401 | } | |
402 | ||
403 | ||
404 | void AliTPCTrackHitsV2::AddHit(Int_t volumeID, Int_t trackID, | |
405 | Double_t r, Double_t z, Double_t fi, Int_t q) | |
406 | { | |
53110b9d | 407 | // |
408 | // Adding one hit | |
f641f6bd | 409 | // |
410 | fSize++; | |
411 | Bool_t diff=kFALSE; | |
412 | if (!fTempInfo) { //initialisation of track - initialisation of parameters | |
413 | fTempInfo = new AliTPCTempHitInfoV2; | |
414 | fTempInfo->fParam = new((*fArray)[0]) AliTrackHitsParamV2; | |
415 | fTempInfo->fParam->fVolumeID = volumeID; | |
416 | fTempInfo->fParam->fTrackID = trackID; | |
417 | AddVolume(volumeID); | |
418 | // | |
419 | fTempInfo->fParamIndex = 0; | |
420 | fTempInfo->NewParam(r,z,fi,q); | |
421 | return; | |
422 | } | |
423 | ||
424 | // if new volume or new trackID | |
425 | if ( (volumeID!=fTempInfo->fParam->fVolumeID) || | |
426 | (trackID!=fTempInfo->fParam->fTrackID)){ | |
427 | if (volumeID!=fTempInfo->fParam->fVolumeID) AddVolume(volumeID); | |
428 | diff=kTRUE; | |
429 | FlushHitStack(kTRUE); | |
430 | ||
431 | fTempInfo->fParamIndex++; | |
432 | fTempInfo->fParam = new((*fArray)[fTempInfo->fParamIndex]) AliTrackHitsParamV2; | |
433 | fTempInfo->fParam->fVolumeID = volumeID; | |
434 | fTempInfo->fParam->fTrackID = trackID; | |
435 | fTempInfo->NewParam(r,z,fi,q); | |
436 | return; | |
437 | } | |
438 | ||
439 | //calculate current fit precission to next point | |
440 | AliTrackHitsParamV2 ¶m = *(fTempInfo->fParam); | |
441 | Double_t dd=0; | |
442 | Double_t dl=0; | |
443 | Double_t ratio=0; | |
444 | Double_t dr,dz,dfi,ddz,ddfi; | |
445 | Double_t drhit,ddl; | |
446 | dr=dz=dfi=ddz=ddfi=0; | |
447 | drhit = r-fTempInfo->fOldR; | |
448 | { | |
449 | //Double_t dfi2 = param.fAn+2*param.fAd*(r-param.fR); | |
450 | Double_t dfi2 = param.fAn; | |
451 | dfi2*=dfi2*fTempInfo->fOldR*fTempInfo->fOldR; | |
452 | //Double_t ddz2 = param.fTheta+2*param.fThetaD*(r-param.fR); | |
453 | Double_t ddz2 = param.fTheta; | |
454 | ddz2*=ddz2; | |
455 | ratio = TMath::Sqrt(1.+ dfi2+ ddz2); | |
456 | } | |
c4a237ae | 457 | // |
458 | // dl = fStep * Short_t(TMath::Nint(drhit*ratio/fStep)); // MI change - range check | |
459 | dl = drhit*ratio/fStep; | |
460 | if (TMath::Abs(dl)>32765) dl =0; | |
461 | dl = fStep * Short_t(TMath::Nint(dl)); | |
462 | // | |
f641f6bd | 463 | ddl = dl - drhit*ratio; |
464 | fTempInfo->fOldR += dl/ratio; | |
465 | ||
466 | if (fTempInfo->fStackIndex>2){ | |
467 | dr = r-param.fR; | |
468 | dz = z-param.fZ; | |
469 | dfi = fi-param.fFi; | |
470 | ddz = dr*param.fTheta+dr*dr*param.fThetaD-dz; | |
471 | ddfi= dr*param.fAn+dr*dr*param.fAd-dfi; | |
472 | dd = TMath::Sqrt(ddz*ddz+r*r*ddfi*ddfi+ddl*ddl); | |
473 | // | |
474 | } | |
475 | //safety factor 1.25 | |
476 | if ( ( (dd*1.25>fPrecision) ) || | |
53110b9d | 477 | (fTempInfo->fStackIndex+4>fTempInfo->kStackSize) || |
f641f6bd | 478 | (TMath::Abs(dl/fStep)>fMaxDistance) ) |
479 | diff=kTRUE; | |
480 | else{ // if precision OK | |
481 | fTempInfo->fStackIndex++; | |
482 | fTempInfo->SetHit(r,z,fi,q); | |
483 | return; | |
484 | } | |
485 | ||
486 | ||
487 | //if parameter changed | |
488 | if (FlushHitStack(kFALSE)){ //if full buffer flushed | |
489 | fTempInfo->fParamIndex++; | |
490 | fTempInfo->fParam = new((*fArray)[fTempInfo->fParamIndex]) AliTrackHitsParamV2; | |
491 | fTempInfo->fParam->fVolumeID = volumeID; | |
492 | fTempInfo->fParam->fTrackID = trackID; | |
493 | fTempInfo->NewParam(r,z,fi,q); | |
494 | } | |
495 | else{ | |
496 | fTempInfo->fStackIndex++; | |
497 | fTempInfo->SetHit(r,z,fi,q); | |
498 | } | |
499 | } | |
500 | ||
501 | Bool_t AliTPCTrackHitsV2::FlushHitStack(Bool_t force) | |
502 | { | |
503 | // | |
53110b9d | 504 | // write fHitsPosAndQ information from the stack to te arrays |
505 | // | |
f641f6bd | 506 | if (!fTempInfo) return kFALSE; |
507 | ||
508 | AliTrackHitsParamV2 & param = *(fTempInfo->fParam); | |
509 | //recalculate track parameter not fixing first point | |
510 | fTempInfo->UpdateParam(fStep/4.); | |
511 | //fTempInfo->Fit(fTempInfo->fParam); //- fixing the first and the last point | |
512 | ||
513 | Double_t oldr = param.fR; | |
514 | UInt_t i; | |
515 | Double_t dd; | |
516 | param.fNHits = fTempInfo->fStackIndex+1; | |
517 | if (param.fHitDistance) delete []param.fHitDistance; | |
518 | if (param.fCharge) delete []param.fCharge; | |
519 | param.fHitDistance = new Short_t[param.fNHits]; | |
520 | param.fCharge = new Short_t[param.fNHits]; | |
521 | ||
522 | ||
523 | for (i=0; i <= fTempInfo->fStackIndex; i++){ | |
524 | Double_t * position = fTempInfo->GetPosition(i); | |
525 | Double_t dr = position[0]-oldr; | |
526 | Double_t ratio; | |
527 | { | |
528 | //Double_t dfi2 = param.fAn+2*param.fAd*(position[0]-param.fR); | |
529 | Double_t dfi2 = param.fAn; | |
530 | dfi2*=dfi2*oldr*oldr; | |
531 | //Double_t ddz2 = param.fTheta+2*param.fThetaD*(position[0]-param.fR); | |
532 | Double_t ddz2 = param.fTheta; | |
533 | ddz2*=ddz2; | |
534 | ratio = TMath::Sqrt(1.+ dfi2+ ddz2); | |
535 | } | |
536 | ||
595c3700 | 537 | // Double_t dl = fStep*(Short_t)TMath::Nint(dr*ratio/fStep); //MI change |
538 | Double_t dl = dr*ratio/fStep; | |
539 | if (TMath::Abs(dl)>32765) dl =0; | |
540 | dl = fStep * Short_t(TMath::Nint(dl)); | |
541 | ||
f641f6bd | 542 | dr = dl/ratio; |
543 | oldr+=dr; | |
544 | //calculate precission | |
545 | AliTrackHitsParamV2 ¶m = *(fTempInfo->fParam); | |
546 | //real deltas | |
547 | Double_t dr1= position[0]-param.fR; | |
548 | Double_t dz = position[1]-param.fZ; | |
549 | Double_t dfi = position[2]-param.fFi; | |
550 | //extrapolated deltas | |
551 | Double_t dr2 = oldr-param.fR; | |
552 | Double_t ddr = dr2-dr1; | |
553 | Double_t ddz = dr2*param.fTheta+dr2*dr2*param.fThetaD-dz; | |
554 | Double_t ddfi= dr2*param.fAn+dr2*dr2*param.fAd-dfi; | |
555 | dd = TMath::Sqrt(ddz*ddz+oldr*oldr*ddfi*ddfi+ddr*ddr); | |
556 | ||
557 | ||
558 | if ( (dd>fPrecision) ){ | |
559 | //if ( (dd<0) ){ | |
560 | if (i==0){ | |
561 | param.fAn = 0; | |
562 | param.fAd = 0; | |
563 | param.fTheta =0; | |
564 | param.fThetaD =0; | |
565 | Double_t ddz = dr2*param.fTheta+dr2*dr2*param.fThetaD-dz; | |
566 | Double_t ddfi= dr2*param.fAn+dr2*dr2*param.fAd-dfi; | |
567 | dl = 0; | |
568 | dd = TMath::Sqrt(ddz*ddz+oldr*oldr*ddfi*ddfi+ddr*ddr); | |
569 | } | |
570 | else | |
571 | break; | |
572 | } | |
573 | ||
574 | param.fHitDistance[i]= Short_t(TMath::Nint(dl/fStep)); | |
575 | param.fCharge[i]= Short_t(fTempInfo->fQStack[i]); | |
576 | } | |
577 | ||
578 | if (i<=fTempInfo->fStackIndex){ //if previous iteration not succesfull | |
579 | Short_t * charge = new Short_t[i]; | |
580 | Short_t * hitDistance= new Short_t[i]; | |
581 | memcpy(charge, param.fCharge,sizeof(Short_t)*i); | |
582 | memcpy(hitDistance, param.fHitDistance,sizeof(Short_t)*i); | |
583 | delete [] param.fCharge; | |
584 | delete [] param.fHitDistance; | |
585 | param.fNHits= i; | |
586 | param.fCharge = charge; | |
587 | param.fHitDistance = hitDistance; | |
588 | // | |
589 | Int_t volumeID = fTempInfo->fParam->fVolumeID; | |
590 | Int_t trackID =fTempInfo->fParam->fTrackID; | |
591 | fTempInfo->fParamIndex++; | |
592 | fTempInfo->fParam = new((*fArray)[fTempInfo->fParamIndex]) AliTrackHitsParamV2; | |
593 | Double_t * p = fTempInfo->GetPosition(i); | |
594 | UInt_t index2 = fTempInfo->fStackIndex; | |
595 | fTempInfo->NewParam(p[0],p[1],p[2],fTempInfo->fQStack[i]); | |
596 | fTempInfo->fParam->fVolumeID= volumeID; | |
597 | fTempInfo->fParam->fTrackID= trackID; | |
598 | if (i+1<=index2) FlushHitStack2(i+1,index2); | |
599 | ||
600 | if (force) return FlushHitStack(kTRUE); | |
601 | return kFALSE; | |
602 | } | |
603 | return kTRUE; | |
604 | } | |
605 | ||
606 | ||
607 | void AliTPCTrackHitsV2::FlushHitStack2(Int_t index1, Int_t index2) | |
608 | { | |
609 | // | |
610 | // second iteration flush stack | |
53110b9d | 611 | // call only for hits where first iteration were not succesfully interpolated |
612 | // | |
f641f6bd | 613 | Double_t * positionstack = new Double_t[3*(index2-index1+1)]; |
614 | UInt_t * qstack = new UInt_t[index2-index1+1]; | |
615 | memcpy(positionstack, &fTempInfo->fPositionStack[3*index1], | |
616 | (3*(index2-index1+1))*sizeof(Double_t)); | |
617 | memcpy(qstack, &fTempInfo->fQStack[index1],(index2-index1+1)*sizeof(UInt_t)); | |
618 | Double_t *p = positionstack; | |
619 | for (Int_t j=0; j<=index2-index1;j++){ | |
620 | fTempInfo->fStackIndex++; | |
621 | fTempInfo->SetHit(p[3*j+0],p[3*j+1],p[3*j+2],qstack[j]); | |
622 | } | |
623 | delete []positionstack; | |
624 | delete []qstack; | |
625 | } | |
626 | ||
627 | ||
628 | void AliTPCTrackHitsV2::AddVolume(Int_t volume) | |
629 | { | |
630 | // | |
631 | //add volumes to tthe list of volumes | |
53110b9d | 632 | // |
f641f6bd | 633 | Int_t * volumes = new Int_t[fNVolumes+1]; |
f55b9162 | 634 | if (fVolumes) memcpy(volumes,fVolumes,(fNVolumes)*sizeof(Int_t)); |
f641f6bd | 635 | volumes[fNVolumes]=volume; |
636 | fNVolumes++; | |
637 | if (fVolumes) delete []fVolumes; | |
638 | fVolumes = volumes; | |
639 | } | |
640 | ||
641 | ||
f641f6bd | 642 | Bool_t AliTPCTrackHitsV2::First() |
643 | { | |
644 | // | |
645 | //set Current hit for the first hit | |
646 | // | |
6e493dba | 647 | |
648 | if (fArray->GetSize()<=0) { | |
649 | fCurrentHit->fStatus = kFALSE; | |
650 | return kFALSE; | |
651 | } | |
652 | ||
f641f6bd | 653 | AliTrackHitsParamV2 *param = (AliTrackHitsParamV2 *)fArray->At(0); |
fce0283f | 654 | if (!fHit) fHit = new AliTPChit; |
f641f6bd | 655 | if (!(param) ) { |
656 | fCurrentHit->fStatus = kFALSE; | |
657 | return kFALSE; | |
658 | } | |
659 | // | |
660 | fCurrentHit->fParamIndex = 0; | |
661 | fCurrentHit->fStackIndex = 0; | |
662 | // | |
fce0283f | 663 | // |
664 | ((AliTPChit*)fHit)->fSector = param->fVolumeID; | |
665 | ((AliTPChit*)fHit)->SetTrack(param->fTrackID); | |
666 | ((AliTPChit*)fHit)->SetX(param->fR*TMath::Cos(param->fFi)); | |
667 | ((AliTPChit*)fHit)->SetY(param->fR*TMath::Sin(param->fFi)); | |
668 | ((AliTPChit*)fHit)->SetZ(param->fZ); | |
669 | ((AliTPChit*)fHit)->fQ = param->fCharge[0]; | |
670 | /* | |
671 | fCurrentHit->fHit.fSector = param->fVolumeID; | |
672 | fCurrentHit->fHit.SetTrack(param->fTrackID); | |
673 | fCurrentHit->fHit.SetX(param->fR*TMath::Cos(param->fFi)); | |
674 | fCurrentHit->fHit.SetY(param->fR*TMath::Sin(param->fFi)); | |
675 | fCurrentHit->fHit.SetZ(param->fZ); | |
676 | fCurrentHit->fHit.fQ = param->fCharge[0]; | |
677 | */ | |
f641f6bd | 678 | fCurrentHit->fR = param->fR; |
679 | ||
680 | return fCurrentHit->fStatus = kTRUE; | |
681 | } | |
682 | ||
683 | Bool_t AliTPCTrackHitsV2::Next() | |
684 | { | |
685 | // | |
53110b9d | 686 | // Hit iterator |
687 | // | |
f641f6bd | 688 | if (!(fCurrentHit->fStatus)) |
689 | return kFALSE; | |
690 | ||
691 | fCurrentHit->fStackIndex++; | |
692 | ||
693 | AliTrackHitsParamV2 *param = (AliTrackHitsParamV2 *)fArray->At(fCurrentHit->fParamIndex); | |
694 | if (fCurrentHit->fStackIndex>=param->fNHits){ | |
695 | fCurrentHit->fParamIndex++; | |
696 | if (fCurrentHit->fParamIndex>=fArray->GetEntriesFast()){ | |
697 | fCurrentHit->fStatus=kFALSE; | |
698 | return kFALSE; | |
699 | } | |
700 | param = (AliTrackHitsParamV2 *)fArray->At(fCurrentHit->fParamIndex); | |
701 | fCurrentHit->fStackIndex=0; | |
702 | fCurrentHit->fR = param->fR; | |
703 | } | |
704 | ||
705 | ||
706 | ||
707 | Double_t ratio; | |
708 | { | |
709 | // Double_t dfi2 = param->fAn+2*param->fAd*(fCurrentHit->fR-param->fR); | |
710 | Double_t dfi2 = param->fAn; | |
711 | dfi2*=dfi2*fCurrentHit->fR*fCurrentHit->fR; | |
712 | // Double_t ddz2 = param->fTheta+2*param->fThetaD*(fCurrentHit->fR-param->fR); | |
713 | Double_t ddz2 = param->fTheta; | |
714 | ddz2*=ddz2; | |
715 | ratio = TMath::Sqrt(1.+ dfi2+ ddz2); | |
716 | } | |
717 | ||
718 | fCurrentHit->fR += fStep*param->fHitDistance[fCurrentHit->fStackIndex]/ratio; | |
719 | ||
720 | Double_t dR = fCurrentHit->fR - param->fR; | |
721 | Double_t fi = param->fFi + (param->fAn*dR+param->fAd*dR*dR); | |
722 | Double_t z = param->fZ + (param->fTheta*dR+param->fThetaD*dR*dR); | |
fce0283f | 723 | /* |
f641f6bd | 724 | fCurrentHit->fHit.fQ = param->fCharge[fCurrentHit->fStackIndex]; |
725 | fCurrentHit->fHit.SetX(fCurrentHit->fR*TMath::Cos(fi)); | |
726 | fCurrentHit->fHit.SetY(fCurrentHit->fR*TMath::Sin(fi)); | |
727 | fCurrentHit->fHit.SetZ(z); | |
728 | fCurrentHit->fHit.fSector = param->fVolumeID; | |
729 | fCurrentHit->fHit.SetTrack(param->fTrackID); | |
fce0283f | 730 | */ |
731 | ((AliTPChit*)fHit)->fQ = param->fCharge[fCurrentHit->fStackIndex]; | |
732 | ((AliTPChit*)fHit)->SetX(fCurrentHit->fR*TMath::Cos(fi)); | |
733 | ((AliTPChit*)fHit)->SetY(fCurrentHit->fR*TMath::Sin(fi)); | |
734 | ((AliTPChit*)fHit)->SetZ(z); | |
735 | ((AliTPChit*)fHit)->fSector = param->fVolumeID; | |
736 | ((AliTPChit*)fHit)->SetTrack(param->fTrackID); | |
737 | ||
f641f6bd | 738 | return kTRUE; |
739 | } | |
740 | ||
53110b9d | 741 | AliHit * AliTPCTrackHitsV2::GetHit() const |
f641f6bd | 742 | { |
53110b9d | 743 | // |
744 | // Return one hit | |
f641f6bd | 745 | // |
fce0283f | 746 | return (fCurrentHit->fStatus)? fHit:0; |
f641f6bd | 747 | //return &fCurrentHit->fHit; |
748 | ||
749 | } | |
750 | ||
751 | AliTrackHitsParamV2 * AliTPCTrackHitsV2::GetParam() | |
752 | { | |
53110b9d | 753 | // |
754 | // Return current parameters | |
755 | // | |
756 | return (fCurrentHit->fStatus)? | |
757 | (AliTrackHitsParamV2 *)fArray->At(fCurrentHit->fParamIndex):0; | |
f641f6bd | 758 | } |
53110b9d | 759 |