modifications to satisfy the coding conventions
[u/mrichter/AliRoot.git] / STEER / AliMagFCheb.cxx
CommitLineData
5406439e 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 **************************************************************************/
0eea9d4d 15
16#include "AliMagFCheb.h"
5406439e 17#include <TSystem.h>
0eea9d4d 18
19ClassImp(AliMagFCheb)
20
0eea9d4d 21//__________________________________________________________________________________________
d28e407c 22AliMagFCheb::AliMagFCheb() :
23 fNParamsSol(0),
24 fNSegZSol(0),
25 fNParamsTPCInt(0),
26 fNSegZTPCInt(0),
27 fNParamsDip(0),
28//
29 fNZSegDip(0),
30 fNYSegDip(0),
31 fNXSegDip(0),
32//
33 fSegZSol(0),
34 fSegRSol(0),
35//
36 fSegZTPCInt(0),
37 fSegRTPCInt(0),
38//
39 fSegZDip(0),
40 fSegYDip(0),
41 fSegXDip(0),
42//
43 fNSegRSol(0),
44 fSegZIdSol(0),
45//
46 fNSegRTPCInt(0),
47 fSegZIdTPCInt(0),
48//
49 fBegSegYDip(0),
50 fNSegYDip(0),
51 fBegSegXDip(0),
52 fNSegXDip(0),
53 fSegIDDip(0),
54//
55 fMinZSol(1e6),
56 fMaxZSol(-1e6),
57 fMaxRSol(-1e6),
58//
59 fMinZDip(1e6),
60 fMaxZDip(-1e6),
61//
62 fMinZTPCInt(1e6),
63 fMaxZTPCInt(-1e6),
64 fMaxRTPCInt(-1e6),
65//
66 fParamsSol(0),
67 fParamsDip(0),
68 fParamsTPCInt(0)
69//
5406439e 70{
71 // default constructor
72}
0bc7b414 73
d28e407c 74//__________________________________________________________________________________________
75AliMagFCheb::AliMagFCheb(const AliMagFCheb& src) :
76 TNamed(src),
77 fNParamsSol(0),
78 fNSegZSol(0),
79 fNParamsTPCInt(0),
80 fNSegZTPCInt(0),
81 fNParamsDip(0),
82//
83 fNZSegDip(0),
84 fNYSegDip(0),
85 fNXSegDip(0),
86//
87 fSegZSol(0),
88 fSegRSol(0),
89//
90 fSegZTPCInt(0),
91 fSegRTPCInt(0),
92//
93 fSegZDip(0),
94 fSegYDip(0),
95 fSegXDip(0),
96//
97 fNSegRSol(0),
98 fSegZIdSol(0),
99//
100 fNSegRTPCInt(0),
101 fSegZIdTPCInt(0),
102//
103 fBegSegYDip(0),
104 fNSegYDip(0),
105 fBegSegXDip(0),
106 fNSegXDip(0),
107 fSegIDDip(0),
108//
109 fMinZSol(1e6),
110 fMaxZSol(-1e6),
111 fMaxRSol(-1e6),
112//
113 fMinZDip(1e6),
114 fMaxZDip(-1e6),
115//
116 fMinZTPCInt(1e6),
117 fMaxZTPCInt(-1e6),
118 fMaxRTPCInt(-1e6),
119//
120 fParamsSol(0),
121 fParamsDip(0),
122 fParamsTPCInt(0)
0eea9d4d 123{
5406439e 124 // copy constructor
d28e407c 125 CopyFrom(src);
0eea9d4d 126}
127
c437b1a5 128//__________________________________________________________________________________________
d28e407c 129void AliMagFCheb::CopyFrom(const AliMagFCheb& src)
130{
5406439e 131 // copy method
d28e407c 132 Clear();
133 SetName(src.GetName());
134 SetTitle(src.GetTitle());
135 fNParamsSol = src.fNParamsSol;
136 fNSegZSol = src.fNSegZSol;
137 fNParamsTPCInt = src.fNParamsTPCInt;
138 fNSegZTPCInt = src.fNSegZTPCInt;
139 fNParamsDip = src.fNParamsDip;
140 //
141 fNZSegDip = src.fNZSegDip;
142 fNYSegDip = src.fNYSegDip;
143 fNXSegDip = src.fNXSegDip;
144 //
145 fMinZSol = src.fMinZSol;
146 fMaxZSol = src.fMaxZSol;
147 fMaxRSol = src.fMaxRSol;
148 //
149 fMinZDip = src.fMinZDip;
150 fMaxZDip = src.fMaxZDip;
151 //
152 fMinZTPCInt = src.fMinZTPCInt;
153 fMaxZTPCInt = src.fMaxZTPCInt;
154 fMaxRTPCInt = src.fMaxRTPCInt;
155 //
156 if (src.fNParamsSol) {
157 memcpy(fSegZSol = new Float_t[fNSegZSol], src.fSegZSol, sizeof(Float_t)*fNSegZSol);
158 memcpy(fSegRSol = new Float_t[fNParamsSol], src.fSegRSol, sizeof(Float_t)*fNParamsSol);
159 memcpy(fNSegRSol = new Int_t[fNSegZSol], src.fNSegRSol, sizeof(Int_t)*fNSegZSol);
160 memcpy(fSegZIdSol= new Int_t[fNSegZSol], src.fSegZIdSol, sizeof(Int_t)*fNSegZSol);
161 fParamsSol = new TObjArray(fNParamsSol);
162 for (int i=0;i<fNParamsSol;i++) fParamsSol->AddAtAndExpand(new AliCheb3D(*src.GetParamSol(i)),i);
c437b1a5 163 }
d28e407c 164 //
165 if (src.fNParamsDip) {
166 memcpy(fSegZDip = new Float_t[fNZSegDip], src.fSegZDip, sizeof(Float_t)*fNZSegDip);
167 memcpy(fSegYDip = new Float_t[fNYSegDip], src.fSegYDip, sizeof(Float_t)*fNYSegDip);
168 memcpy(fSegXDip = new Float_t[fNXSegDip], src.fSegZDip, sizeof(Float_t)*fNXSegDip);
169 memcpy(fBegSegYDip= new Int_t[fNZSegDip], src.fBegSegYDip, sizeof(Int_t)*fNZSegDip);
170 memcpy(fNSegYDip = new Int_t[fNZSegDip], src.fNSegYDip, sizeof(Int_t)*fNZSegDip);
171 memcpy(fBegSegXDip= new Int_t[fNYSegDip], src.fBegSegXDip, sizeof(Int_t)*fNYSegDip);
172 memcpy(fNSegXDip = new Int_t[fNYSegDip], src.fNSegXDip, sizeof(Int_t)*fNYSegDip);
173 memcpy(fSegIDDip = new Int_t[fNXSegDip], src.fSegIDDip, sizeof(Int_t)*fNXSegDip);
174 fParamsDip = new TObjArray(fNParamsDip);
175 for (int i=0;i<fNParamsDip;i++) fParamsDip->AddAtAndExpand(new AliCheb3D(*src.GetParamDip(i)),i);
c437b1a5 176 }
d28e407c 177 //
178 if (src.fNParamsTPCInt) {
179 memcpy(fSegZTPCInt = new Float_t[fNSegZTPCInt], src.fSegZTPCInt, sizeof(Float_t)*fNSegZTPCInt);
180 memcpy(fSegRTPCInt = new Float_t[fNParamsTPCInt], src.fSegRTPCInt, sizeof(Float_t)*fNParamsTPCInt);
181 memcpy(fNSegRTPCInt = new Int_t[fNSegZTPCInt], src.fNSegRTPCInt, sizeof(Int_t)*fNSegZTPCInt);
182 memcpy(fSegZIdTPCInt= new Int_t[fNSegZTPCInt], src.fSegZIdTPCInt, sizeof(Int_t)*fNSegZTPCInt);
183 fParamsTPCInt = new TObjArray(fNParamsTPCInt);
184 for (int i=0;i<fNParamsTPCInt;i++) fParamsTPCInt->AddAtAndExpand(new AliCheb3D(*src.GetParamTPCInt(i)),i);
c437b1a5 185 }
0bc7b414 186 //
0bc7b414 187}
188
d28e407c 189//__________________________________________________________________________________________
c437b1a5 190AliMagFCheb& AliMagFCheb::operator=(const AliMagFCheb& rhs)
0bc7b414 191{
5406439e 192 // assignment
d28e407c 193 if (this != &rhs) {
194 Clear();
195 CopyFrom(rhs);
196 }
197 return *this;
198 //
0bc7b414 199}
200
0eea9d4d 201//__________________________________________________________________________________________
5406439e 202void AliMagFCheb::Clear(const Option_t *)
0eea9d4d 203{
5406439e 204 // clear all dynamic parts
0eea9d4d 205 if (fNParamsSol) {
d28e407c 206 delete fParamsSol;
0eea9d4d 207 delete[] fSegZSol;
208 delete[] fSegRSol;
209 delete[] fNSegRSol;
210 delete[] fSegZIdSol;
211 }
212 //
d28e407c 213 if (fNParamsTPCInt) {
214 delete fParamsTPCInt;
215 delete[] fSegZTPCInt;
216 delete[] fSegRTPCInt;
217 delete[] fNSegRTPCInt;
218 delete[] fSegZIdTPCInt;
219 }
220 //
0eea9d4d 221 if (fNParamsDip) {
d28e407c 222 delete fParamsDip;
223 delete[] fSegZDip;
224 delete[] fSegYDip;
225 delete[] fSegXDip;
226 delete[] fBegSegYDip;
227 delete[] fNSegYDip;
228 delete[] fBegSegXDip;
229 delete[] fNSegXDip;
230 delete[] fSegIDDip;
0eea9d4d 231 }
d28e407c 232 fNParamsSol = fNParamsTPCInt = fNParamsDip = fNZSegDip = fNYSegDip = fNXSegDip = 0;
233 fNSegZSol = fNSegZTPCInt = 0;
234 fMinZSol = fMinZDip = fMinZTPCInt = 1e6;
235 fMaxZSol = fMaxZDip = fMaxZTPCInt = fMaxRSol = fMaxRTPCInt = -1e6;
236 //
0eea9d4d 237}
238
239//__________________________________________________________________________________________
d28e407c 240void AliMagFCheb::Field(Float_t *xyz, Float_t *b) const
0eea9d4d 241{
d28e407c 242 // compute field in cartesian coordinates. If point is outside of the parameterized region
243 // get it at closest valid point
244 static float rphiz[3];
245 //
246#ifndef _BRING_TO_BOUNDARY_ // exact matching to fitted volume is requested
247 if ( !(xyz[2]>=GetMinZSol()&&xyz[2]<=GetMaxZSol()) &&
248 !(xyz[2]>=GetMinZDip()&&xyz[2]<=GetMaxZDip()) ) {for (int i=3;i--;) b[i]=0; return;}
249#endif
250 //
251 if (xyz[2]<fMaxZDip) { // dipole part?
252#ifndef _BRING_TO_BOUNDARY_
253 AliCheb3D* par = GetParamDip(FindDipSegment(xyz));
254 if (par->IsInside(xyz)) {par->Eval(xyz,b); return;}
255 for (int i=3;i--;) b[i]=0; return;
256#else
257 GetParamDip(FindDipSegment(xyz))->Eval(xyz,b); return;
258#endif
259 }
260 //
261 // Sol region: convert coordinates to cyl system
262 CartToCyl(xyz,rphiz);
263#ifndef _BRING_TO_BOUNDARY_
264 if (rphiz[0]>GetMaxRSol()) {for (int i=3;i--;) b[i]=0; return;}
265#endif
266 //
267 FieldCylSol(rphiz,b);
268 //
269 // convert field to cartesian system
270 CylToCartCylB(rphiz, b,b);
271 //
272}
273
274//__________________________________________________________________________________________
275void AliMagFCheb::GetTPCInt(Float_t *xyz, Float_t *b) const
276{
277 // compute TPC region field integral in cartesian coordinates.
278 // If point is outside of the parameterized region get it at closeset valid point
279 static float rphiz[3];
280 //
281 // TPCInt region
282 // convert coordinates to cyl system
283 CartToCyl(xyz,rphiz);
284#ifndef _BRING_TO_BOUNDARY_
285 if ( (rphiz[2]>GetMaxZTPCInt()||rphiz[2]<GetMinZTPCInt()) ||
286 rphiz[0]>GetMaxRTPCInt()) {for (int i=3;i--;) b[i]=0; return;}
287#endif
288 //
289 GetTPCIntCyl(rphiz,b);
290 //
291 // convert field to cartesian system
292 CylToCartCylB(rphiz, b,b);
293 //
294}
295
296//__________________________________________________________________________________________
5406439e 297void AliMagFCheb::FieldCylSol(const Float_t *rphiz, Float_t *b) const
d28e407c 298{
299 // compute Solenoid field in Cylindircal coordinates
300 // note: if the point is outside the volume get the field in closest parameterized point
5406439e 301 const float &r = rphiz[0];
302 const float &z = rphiz[2];
d28e407c 303 int SolZId = 0;
4bf5ea44 304 while (z>fSegZSol[SolZId] && SolZId<fNSegZSol-1) ++SolZId; // find Z segment
d28e407c 305 int SolRId = fSegZIdSol[SolZId]; // first R segment for this Z
306 int SolRMax = SolRId + fNSegRSol[SolZId];
4bf5ea44 307 while (r>fSegRSol[SolRId] && SolRId<SolRMax-1) ++SolRId; // find R segment
d28e407c 308 GetParamSol( SolRId )->Eval(rphiz,b);
309 //
310}
311
312//__________________________________________________________________________________________
313void AliMagFCheb::GetTPCIntCyl(Float_t *rphiz, Float_t *b) const
314{
315 // compute field integral in TPC region in Cylindircal coordinates
316 // note: the check for the point being inside the parameterized region is done outside
5406439e 317 const float &r = rphiz[0];
318 const float &z = rphiz[2];
319 int tpcIntZId = 0;
320 while (z>fSegZTPCInt[tpcIntZId] && tpcIntZId<fNSegZTPCInt) ++tpcIntZId; // find Z segment
321 int tpcIntRId = fSegZIdTPCInt[tpcIntZId]; // first R segment for this Z
322 int tpcIntRIdMax = tpcIntRId + fNSegRTPCInt[tpcIntZId];
323 while (r>fSegRTPCInt[tpcIntRId] && tpcIntRId<tpcIntRIdMax) ++tpcIntRId; // find R segment
324 GetParamTPCInt( tpcIntRId )->Eval(rphiz,b);
d28e407c 325 //
326}
327
328
329//__________________________________________________________________________________________
330void AliMagFCheb::Print(Option_t *) const
331{
5406439e 332 // print info
d28e407c 333 printf("Alice magnetic field parameterized by Chebyshev polynomials\n");
334 printf("Segmentation for Solenoid (%+.2f<Z<%+.2f cm | R<%.2f cm)\n",fMinZSol,fMaxZSol,fMaxRSol);
335 //
336 if (fParamsSol) fParamsSol->Print();
337 /*
338 for (int iz=0;iz<fNSegZSol;iz++) {
339 AliCheb3D* param = GetParamSol( fSegZIdSol[iz] );
340 printf("*** Z Segment %2d (%+7.2f<Z<%+7.2f)\t***\n",iz,param->GetBoundMin(2),param->GetBoundMax(2));
341 for (int ir=0;ir<fNSegRSol[iz];ir++) {
342 param = GetParamSol( fSegZIdSol[iz]+ir );
343 printf(" R Segment %2d (%+7.2f<R<%+7.2f, Precision: %.1e) (ID=%2d)\n",ir, param->GetBoundMin(0),
344 param->GetBoundMax(0),param->GetPrecision(),fSegZIdSol[iz]+ir);
345 }
346 }
347 */
348 //
349 printf("Segmentation for TPC field integral (%+.2f<Z<%+.2f cm | R<%.2f cm)\n",fMinZTPCInt,fMaxZTPCInt,fMaxRTPCInt);
350 //
351 if (fParamsTPCInt) fParamsTPCInt->Print();
352 /*
353 for (int iz=0;iz<fNSegZTPCInt;iz++) {
354 AliCheb3D* param = GetParamTPCInt( fSegZIdTPCInt[iz] );
355 printf("*** Z Segment %2d (%+7.2f<Z<%+7.2f)\t***\n",iz,param->GetBoundMin(2),param->GetBoundMax(2));
356 for (int ir=0;ir<fNSegRTPCInt[iz];ir++) {
357 param = GetParamTPCInt( fSegZIdTPCInt[iz]+ir );
358 printf(" R Segment %2d (%+7.2f<R<%+7.2f, Precision: %.1e) (ID=%2d)\n",ir, param->GetBoundMin(0),
359 param->GetBoundMax(0),param->GetPrecision(),fSegZIdTPCInt[iz]+ir);
360 }
361 }
362 */
363 //
364 printf("Segmentation for Dipole (%+.2f<Z<%+.2f cm)\n",fMinZDip,fMaxZDip);
365 if (fParamsDip) fParamsDip->Print();
366 //
367
368
369}
1cf34ee8 370#ifdef _INC_CREATION_ALICHEB3D_
d28e407c 371//_______________________________________________
372void AliMagFCheb::LoadData(const char* inpfile)
373{
374 // read coefficients data from the text file
375 //
376 TString strf = inpfile;
377 gSystem->ExpandPathName(strf);
378 FILE* stream = fopen(strf,"r");
379 if (!stream) {
380 printf("Did not find input file %s\n",strf.Data());
381 return;
382 }
383 //
384 TString buffs;
385 AliCheb3DCalc::ReadLine(buffs,stream);
386 if (!buffs.BeginsWith("START")) {
387 Error("LoadData","Expected: \"START <name>\", found \"%s\"\nStop\n",buffs.Data());
388 exit(1);
389 }
390 if (buffs.First(' ')>0) SetName(buffs.Data()+buffs.First(' ')+1);
391 //
392 // Solenoid part -----------------------------------------------------------
393 AliCheb3DCalc::ReadLine(buffs,stream);
394 if (!buffs.BeginsWith("START SOLENOID")) {
395 Error("LoadData","Expected: \"START SOLENOID\", found \"%s\"\nStop\n",buffs.Data());
396 exit(1);
397 }
398 AliCheb3DCalc::ReadLine(buffs,stream); // nparam
399 int nparSol = buffs.Atoi();
400 //
401 for (int ip=0;ip<nparSol;ip++) {
402 AliCheb3D* cheb = new AliCheb3D();
403 cheb->LoadData(stream);
404 AddParamSol(cheb);
405 }
406 //
407 AliCheb3DCalc::ReadLine(buffs,stream);
408 if (!buffs.BeginsWith("END SOLENOID")) {
409 Error("LoadData","Expected \"END SOLENOID\", found \"%s\"\nStop\n",buffs.Data());
410 exit(1);
411 }
412 //
413 // TPCInt part -----------------------------------------------------------
414 AliCheb3DCalc::ReadLine(buffs,stream);
415 if (!buffs.BeginsWith("START TPCINT")) {
416 Error("LoadData","Expected: \"START TPCINT\", found \"%s\"\nStop\n",buffs.Data());
417 exit(1);
418 }
419 AliCheb3DCalc::ReadLine(buffs,stream); // nparam
420 int nparTPCInt = buffs.Atoi();
421 //
422 for (int ip=0;ip<nparTPCInt;ip++) {
423 AliCheb3D* cheb = new AliCheb3D();
424 cheb->LoadData(stream);
425 AddParamTPCInt(cheb);
426 }
427 //
428 AliCheb3DCalc::ReadLine(buffs,stream);
429 if (!buffs.BeginsWith("END TPCINT")) {
430 Error("LoadData","Expected \"END TPCINT\", found \"%s\"\nStop\n",buffs.Data());
431 exit(1);
432 }
433 //
434 // Dipole part -----------------------------------------------------------
435 AliCheb3DCalc::ReadLine(buffs,stream);
436 if (!buffs.BeginsWith("START DIPOLE")) {
437 Error("LoadData","Expected: \"START DIPOLE\", found \"%s\"\nStop\n",buffs.Data());
438 exit(1);
439 }
440 AliCheb3DCalc::ReadLine(buffs,stream); // nparam
441 int nparDip = buffs.Atoi();
442 //
443 for (int ip=0;ip<nparDip;ip++) {
444 AliCheb3D* cheb = new AliCheb3D();
445 cheb->LoadData(stream);
446 AddParamDip(cheb);
447 }
0eea9d4d 448 //
d28e407c 449 AliCheb3DCalc::ReadLine(buffs,stream);
450 if (!buffs.BeginsWith("END DIPOLE")) {
451 Error("LoadData","Expected \"END DIPOLE\", found \"%s\"\nStop\n",GetName(),buffs.Data());
452 exit(1);
453 }
454 //
455 AliCheb3DCalc::ReadLine(buffs,stream);
456 if (!buffs.BeginsWith("END") || !buffs.Contains(GetName())) {
457 Error("LoadData","Expected: \"END %s\", found \"%s\"\nStop\n",GetName(),buffs.Data());
458 exit(1);
459 }
460 //
461 // ---------------------------------------------------------------------------
462 fclose(stream);
463 BuildTableSol();
464 BuildTableTPCInt();
465 BuildTableDip();
466 printf("Loaded magnetic field \"%s\" from %s\n",GetName(),strf.Data());
0eea9d4d 467 //
d28e407c 468}
1cf34ee8 469#endif
d28e407c 470
471//_________________________________________________________________________
5406439e 472Int_t AliMagFCheb::FindDipSegment(const float *xyz) const
d28e407c 473{
474 // find the segment containing point xyz. If it is outside find the closest segment
475 int xid,yid,zid = TMath::BinarySearch(fNZSegDip,fSegZDip,xyz[2]); // find zsegment
476 int ysegBeg = fBegSegYDip[zid];
0eea9d4d 477 //
d28e407c 478 for (yid=0;yid<fNSegYDip[zid];yid++) if (xyz[1]<fSegYDip[ysegBeg+yid]) break;
479 if ( --yid < 0 ) yid = 0;
480 yid += ysegBeg;
0eea9d4d 481 //
d28e407c 482 int xsegBeg = fBegSegXDip[yid];
483 for (xid=0;xid<fNSegXDip[yid];xid++) if (xyz[0]<fSegXDip[xsegBeg+xid]) break;
484 if ( --xid < 0) xid = 0;
485 xid += xsegBeg;
0eea9d4d 486 //
d28e407c 487 return fSegIDDip[xid];
488}
489
490//_______________________________________________
491#ifdef _INC_CREATION_ALICHEB3D_
492
493
494//__________________________________________________________________________________________
495AliMagFCheb::AliMagFCheb(const char* inputFile) :
496 fNParamsSol(0),
497 fNSegZSol(0),
498 fNParamsTPCInt(0),
499 fNSegZTPCInt(0),
500 fNParamsDip(0),
501//
502 fNZSegDip(0),
503 fNYSegDip(0),
504 fNXSegDip(0),
505//
506 fSegZSol(0),
507 fSegRSol(0),
508//
509 fSegZTPCInt(0),
510 fSegRTPCInt(0),
511//
512 fSegZDip(0),
513 fSegYDip(0),
514 fSegXDip(0),
515//
516 fNSegRSol(0),
517 fSegZIdSol(0),
518//
519 fNSegRTPCInt(0),
520 fSegZIdTPCInt(0),
521//
522 fBegSegYDip(0),
523 fNSegYDip(0),
524 fBegSegXDip(0),
525 fNSegXDip(0),
526 fSegIDDip(0),
527//
528 fMinZSol(0),
529 fMaxZSol(0),
530 fMaxRSol(0),
531//
532 fMinZDip(0),
533 fMaxZDip(0),
534//
535 fMinZTPCInt(0),
536 fMaxZTPCInt(0),
537 fMaxRTPCInt(0),
538//
539 fParamsSol(0),
540 fParamsDip(0),
541 fParamsTPCInt(0)
542//
543//
544{
5406439e 545 // construct from coeffs from the text file
d28e407c 546 LoadData(inputFile);
0eea9d4d 547}
548
549//__________________________________________________________________________________________
5406439e 550void AliMagFCheb::AddParamSol(const AliCheb3D* param)
0eea9d4d 551{
552 // adds new parameterization piece for Sol
553 // NOTE: pieces must be added strictly in increasing R then increasing Z order
554 //
555 if (!fParamsSol) fParamsSol = new TObjArray();
556 fParamsSol->Add(param);
557 fNParamsSol++;
558 //
559}
560
561//__________________________________________________________________________________________
5406439e 562void AliMagFCheb::AddParamTPCInt(const AliCheb3D* param)
d28e407c 563{
564 // adds new parameterization piece for TPCInt
565 // NOTE: pieces must be added strictly in increasing R then increasing Z order
566 //
567 if (!fParamsTPCInt) fParamsTPCInt = new TObjArray();
568 fParamsTPCInt->Add(param);
569 fNParamsTPCInt++;
570 //
571}
572
573//__________________________________________________________________________________________
5406439e 574void AliMagFCheb::AddParamDip(const AliCheb3D* param)
0eea9d4d 575{
576 // adds new parameterization piece for Dipole
577 //
578 if (!fParamsDip) fParamsDip = new TObjArray();
579 fParamsDip->Add(param);
580 fNParamsDip++;
581 //
582}
583
584//__________________________________________________________________________________________
d28e407c 585void AliMagFCheb::ResetTPCInt()
586{
587 // clean TPC field integral (used for update)
588 if (!fNParamsTPCInt) return;
589 delete fParamsTPCInt;
590 delete[] fSegZTPCInt;
591 delete[] fSegRTPCInt;
592 delete[] fNSegRTPCInt;
593 delete[] fSegZIdTPCInt;
594 //
595 fNParamsTPCInt = 0;
596 fNSegZTPCInt = 0;
597 fSegZTPCInt = 0;
598 fSegRTPCInt = 0;
599 fNSegRTPCInt = 0;
600 fSegZIdTPCInt = 0;
601 fMinZTPCInt = 0;
602 fMaxZTPCInt = 0;
603 fMaxRTPCInt = 0;
604 fParamsTPCInt = 0;
605 //
606}
607
608//__________________________________________________
609void AliMagFCheb::BuildTableDip()
610{
5406439e 611 // build lookup table for dipole
d28e407c 612 //
613 TArrayF segY,segX;
614 TArrayI begSegYDip,begSegXDip;
615 TArrayI nsegYDip,nsegXDip;
616 TArrayI segID;
617 float *tmpSegZ,*tmpSegY,*tmpSegX;
618 //
619 // create segmentation in Z
620 fNZSegDip = SegmentDipDimension(&tmpSegZ, fParamsDip, fNParamsDip, 2, 1,-1, 1,-1, 1,-1) - 1;
621 fNYSegDip = 0;
622 fNXSegDip = 0;
623 //
624 // for each Z slice create segmentation in Y
625 begSegYDip.Set(fNZSegDip);
626 nsegYDip.Set(fNZSegDip);
627 float xyz[3];
628 for (int iz=0;iz<fNZSegDip;iz++) {
629 printf("\nZSegment#%d %+e : %+e\n",iz,tmpSegZ[iz],tmpSegZ[iz+1]);
630 int ny = SegmentDipDimension(&tmpSegY, fParamsDip, fNParamsDip, 1,
631 1,-1, 1,-1, tmpSegZ[iz],tmpSegZ[iz+1]) - 1;
632 segY.Set(ny + fNYSegDip);
633 for (int iy=0;iy<ny;iy++) segY[fNYSegDip+iy] = tmpSegY[iy];
634 begSegYDip[iz] = fNYSegDip;
635 nsegYDip[iz] = ny;
636 printf(" Found %d YSegments, to start from %d\n",ny, begSegYDip[iz]);
637 //
638 // for each slice in Z and Y create segmentation in X
639 begSegXDip.Set(fNYSegDip+ny);
640 nsegXDip.Set(fNYSegDip+ny);
641 xyz[2] = (tmpSegZ[iz]+tmpSegZ[iz+1])/2.; // mean Z of this segment
642 //
643 for (int iy=0;iy<ny;iy++) {
644 int isg = fNYSegDip+iy;
645 printf("\n YSegment#%d %+e : %+e\n",iy, tmpSegY[iy],tmpSegY[iy+1]);
646 int nx = SegmentDipDimension(&tmpSegX, fParamsDip, fNParamsDip, 0,
647 1,-1, tmpSegY[iy],tmpSegY[iy+1], tmpSegZ[iz],tmpSegZ[iz+1]) - 1;
648 //
649 segX.Set(nx + fNXSegDip);
650 for (int ix=0;ix<nx;ix++) segX[fNXSegDip+ix] = tmpSegX[ix];
651 begSegXDip[isg] = fNXSegDip;
652 nsegXDip[isg] = nx;
653 printf(" Found %d XSegments, to start from %d\n",nx, begSegXDip[isg]);
654 //
655 segID.Set(fNXSegDip+nx);
656 //
657 // find corresponding params
658 xyz[1] = (tmpSegY[iy]+tmpSegY[iy+1])/2.; // mean Y of this segment
659 //
660 for (int ix=0;ix<nx;ix++) {
661 xyz[0] = (tmpSegX[ix]+tmpSegX[ix+1])/2.; // mean X of this segment
662 for (int ipar=0;ipar<fNParamsDip;ipar++) {
663 AliCheb3D* cheb = (AliCheb3D*) fParamsDip->At(ipar);
664 if (!cheb->IsInside(xyz)) continue;
665 segID[fNXSegDip+ix] = ipar;
666 break;
667 }
668 }
669 fNXSegDip += nx;
670 //
671 delete[] tmpSegX;
672 }
673 delete[] tmpSegY;
674 fNYSegDip += ny;
675 }
676 //
677 fMinZDip = tmpSegZ[0];
678 fMaxZDip = tmpSegZ[fNZSegDip];
679 fSegZDip = new Float_t[fNZSegDip];
680 for (int i=fNZSegDip;i--;) fSegZDip[i] = tmpSegZ[i];
681 delete[] tmpSegZ;
682 //
683 fSegYDip = new Float_t[fNYSegDip];
684 fSegXDip = new Float_t[fNXSegDip];
685 fBegSegYDip = new Int_t[fNZSegDip];
686 fNSegYDip = new Int_t[fNZSegDip];
687 fBegSegXDip = new Int_t[fNYSegDip];
688 fNSegXDip = new Int_t[fNYSegDip];
689 fSegIDDip = new Int_t[fNXSegDip];
690 //
691 for (int i=fNYSegDip;i--;) fSegYDip[i] = segY[i];
692 for (int i=fNXSegDip;i--;) fSegXDip[i] = segX[i];
693 for (int i=fNZSegDip;i--;) {fBegSegYDip[i] = begSegYDip[i]; fNSegYDip[i] = nsegYDip[i];}
694 for (int i=fNYSegDip;i--;) {fBegSegXDip[i] = begSegXDip[i]; fNSegXDip[i] = nsegXDip[i];}
695 for (int i=fNXSegDip;i--;) {fSegIDDip[i] = segID[i];}
696 //
697}
698
699//__________________________________________________________________________________________
0eea9d4d 700void AliMagFCheb::BuildTableSol()
701{
702 // build the indexes for each parameterization of Solenoid
703 //
704 const float kSafety=0.001;
705 //
d28e407c 706 if (fNParamsSol<1) return;
92a04c92 707 fNSegZSol = 0;
708 fMaxRSol = 0;
0eea9d4d 709 fSegRSol = new Float_t[fNParamsSol];
710 float *tmpbufF = new float[fNParamsSol+1];
711 int *tmpbufI = new int[fNParamsSol+1];
712 int *tmpbufI1 = new int[fNParamsSol+1];
713 //
714 // count number of Z slices and number of R slices in each Z slice
715 for (int ip=0;ip<fNParamsSol;ip++) {
716 if (ip==0 || (GetParamSol(ip)->GetBoundMax(2)-GetParamSol(ip-1)->GetBoundMax(2))>kSafety) { // new Z slice
717 tmpbufF[fNSegZSol] = GetParamSol(ip)->GetBoundMax(2); //
718 tmpbufI[fNSegZSol] = 0;
719 tmpbufI1[fNSegZSol++] = ip;
720 }
721 fSegRSol[ip] = GetParamSol(ip)->GetBoundMax(0); // upper R
722 tmpbufI[fNSegZSol-1]++;
92a04c92 723 if (fMaxRSol<fSegRSol[ip]) fMaxRSol = fSegRSol[ip];
0eea9d4d 724 }
725 //
726 fSegZSol = new Float_t[fNSegZSol];
727 fSegZIdSol = new Int_t[fNSegZSol];
728 fNSegRSol = new Int_t[fNSegZSol];
729 for (int iz=0;iz<fNSegZSol;iz++) {
730 fSegZSol[iz] = tmpbufF[iz];
731 fNSegRSol[iz] = tmpbufI[iz];
732 fSegZIdSol[iz] = tmpbufI1[iz];
733 }
734 //
735 fMinZSol = GetParamSol(0)->GetBoundMin(2);
736 fMaxZSol = GetParamSol(fNParamsSol-1)->GetBoundMax(2);
0eea9d4d 737 //
738 delete[] tmpbufF;
739 delete[] tmpbufI;
740 delete[] tmpbufI1;
741 //
742 //
743}
744
745//__________________________________________________________________________________________
d28e407c 746void AliMagFCheb::BuildTableTPCInt()
0eea9d4d 747{
d28e407c 748 // build the indexes for each parameterization of TPC field integral
0eea9d4d 749 //
d28e407c 750 const float kSafety=0.001;
0eea9d4d 751 //
d28e407c 752 if (fNParamsTPCInt<1) return;
92a04c92 753 fNSegZTPCInt = 0;
d28e407c 754 fSegRTPCInt = new Float_t[fNParamsTPCInt];
755 float *tmpbufF = new float[fNParamsTPCInt+1];
756 int *tmpbufI = new int[fNParamsTPCInt+1];
757 int *tmpbufI1 = new int[fNParamsTPCInt+1];
0eea9d4d 758 //
d28e407c 759 // count number of Z slices and number of R slices in each Z slice
760 for (int ip=0;ip<fNParamsTPCInt;ip++) {
761 if (ip==0 || (GetParamTPCInt(ip)->GetBoundMax(2)-GetParamTPCInt(ip-1)->GetBoundMax(2))>kSafety) { // new Z slice
762 tmpbufF[fNSegZTPCInt] = GetParamTPCInt(ip)->GetBoundMax(2); //
763 tmpbufI[fNSegZTPCInt] = 0;
764 tmpbufI1[fNSegZTPCInt++] = ip;
765 }
766 fSegRTPCInt[ip] = GetParamTPCInt(ip)->GetBoundMax(0); // upper R
767 tmpbufI[fNSegZTPCInt-1]++;
768 }
0eea9d4d 769 //
d28e407c 770 fSegZTPCInt = new Float_t[fNSegZTPCInt];
771 fSegZIdTPCInt = new Int_t[fNSegZTPCInt];
772 fNSegRTPCInt = new Int_t[fNSegZTPCInt];
773 for (int iz=0;iz<fNSegZTPCInt;iz++) {
774 fSegZTPCInt[iz] = tmpbufF[iz];
775 fNSegRTPCInt[iz] = tmpbufI[iz];
776 fSegZIdTPCInt[iz] = tmpbufI1[iz];
777 }
778 //
779 fMinZTPCInt = GetParamTPCInt(0)->GetBoundMin(2);
780 fMaxZTPCInt = GetParamTPCInt(fNParamsTPCInt-1)->GetBoundMax(2);
781 fMaxRTPCInt = GetParamTPCInt(fNParamsTPCInt-1)->GetBoundMax(0);
782 //
783 delete[] tmpbufF;
784 delete[] tmpbufI;
785 delete[] tmpbufI1;
0eea9d4d 786 //
0eea9d4d 787 //
0eea9d4d 788}
789
0eea9d4d 790void AliMagFCheb::SaveData(const char* outfile) const
791{
792 // writes coefficients data to output text file
793 TString strf = outfile;
794 gSystem->ExpandPathName(strf);
795 FILE* stream = fopen(strf,"w+");
796 //
d28e407c 797 // Sol part ---------------------------------------------------------
0eea9d4d 798 fprintf(stream,"# Set of Chebyshev parameterizations for ALICE magnetic field\nSTART %s\n",GetName());
799 fprintf(stream,"START SOLENOID\n#Number of pieces\n%d\n",fNParamsSol);
800 for (int ip=0;ip<fNParamsSol;ip++) GetParamSol(ip)->SaveData(stream);
801 fprintf(stream,"#\nEND SOLENOID\n");
802 //
d28e407c 803 // TPCInt part ---------------------------------------------------------
804 fprintf(stream,"# Set of Chebyshev parameterizations for ALICE magnetic field\nSTART %s\n",GetName());
805 fprintf(stream,"START TPCINT\n#Number of pieces\n%d\n",fNParamsTPCInt);
806 for (int ip=0;ip<fNParamsTPCInt;ip++) GetParamTPCInt(ip)->SaveData(stream);
807 fprintf(stream,"#\nEND TPCINT\n");
808 //
809 // Dip part ---------------------------------------------------------
0eea9d4d 810 fprintf(stream,"START DIPOLE\n#Number of pieces\n%d\n",fNParamsDip);
811 for (int ip=0;ip<fNParamsDip;ip++) GetParamDip(ip)->SaveData(stream);
812 fprintf(stream,"#\nEND DIPOLE\n");
813 //
814 fprintf(stream,"#\nEND %s\n",GetName());
815 //
816 fclose(stream);
817 //
818}
0eea9d4d 819
d28e407c 820Int_t AliMagFCheb::SegmentDipDimension(float** seg,const TObjArray* par,int npar, int dim,
821 float xmn,float xmx,float ymn,float ymx,float zmn,float zmx)
0eea9d4d 822{
d28e407c 823 // find all boundaries in deimension dim for boxes in given region.
824 // if mn>mx for given projection the check is not done for it.
825 float *tmpC = new float[2*npar];
826 int *tmpInd = new int[2*npar];
827 int nseg0 = 0;
828 for (int ip=0;ip<npar;ip++) {
829 AliCheb3D* cheb = (AliCheb3D*) par->At(ip);
830 if (xmn<xmx && (cheb->GetBoundMin(0)>(xmx+xmn)/2 || cheb->GetBoundMax(0)<(xmn+xmx)/2)) continue;
831 if (ymn<ymx && (cheb->GetBoundMin(1)>(ymx+ymn)/2 || cheb->GetBoundMax(1)<(ymn+ymx)/2)) continue;
832 if (zmn<zmx && (cheb->GetBoundMin(2)>(zmx+zmn)/2 || cheb->GetBoundMax(2)<(zmn+zmx)/2)) continue;
833 //
834 tmpC[nseg0++] = cheb->GetBoundMin(dim);
835 tmpC[nseg0++] = cheb->GetBoundMax(dim);
0eea9d4d 836 }
d28e407c 837 // range Dim's boundaries in increasing order
838 TMath::Sort(nseg0,tmpC,tmpInd,kFALSE);
839 // count number of really different Z's
840 int nseg = 0;
841 float cprev = -1e6;
842 for (int ip=0;ip<nseg0;ip++) {
843 if (TMath::Abs(cprev-tmpC[ tmpInd[ip] ])>1e-4) {
844 cprev = tmpC[ tmpInd[ip] ];
845 nseg++;
846 }
847 else tmpInd[ip] = -1; // supress redundant Z
0eea9d4d 848 }
d28e407c 849 //
850 *seg = new float[nseg]; // create final Z segmenations
851 nseg = 0;
852 for (int ip=0;ip<nseg0;ip++) if (tmpInd[ip]>=0) (*seg)[nseg++] = tmpC[ tmpInd[ip] ];
853 //
854 delete[] tmpC;
855 delete[] tmpInd;
856 return nseg;
0eea9d4d 857}
d28e407c 858
859#endif
860