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a1dde210 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
a1dde210 16#include "AliMagWrapCheb.h"
da7cd221 17#include <TSystem.h>
18#include <TArrayF.h>
19#include <TArrayI.h>
a1dde210 20
21ClassImp(AliMagWrapCheb)
a1dde210 22
da7cd221 23//__________________________________________________________________________________________
24AliMagWrapCheb::AliMagWrapCheb() :
25 fNParamsSol(0),
26 fNSegZSol(0),
27 fNParamsTPCInt(0),
28 fNSegZTPCInt(0),
29 fNParamsDip(0),
30//
31 fNZSegDip(0),
32 fNYSegDip(0),
33 fNXSegDip(0),
34//
35 fSegZSol(0),
36 fSegRSol(0),
37//
38 fSegZTPCInt(0),
39 fSegRTPCInt(0),
40//
41 fSegZDip(0),
42 fSegYDip(0),
43 fSegXDip(0),
44//
45 fNSegRSol(0),
46 fSegZIdSol(0),
47//
48 fNSegRTPCInt(0),
49 fSegZIdTPCInt(0),
50//
51 fBegSegYDip(0),
52 fNSegYDip(0),
53 fBegSegXDip(0),
54 fNSegXDip(0),
55 fSegIDDip(0),
56//
57 fMinZSol(1e6),
58 fMaxZSol(-1e6),
59 fMaxRSol(-1e6),
60//
61 fMinZDip(1e6),
62 fMaxZDip(-1e6),
63//
64 fMinZTPCInt(1e6),
65 fMaxZTPCInt(-1e6),
66 fMaxRTPCInt(-1e6),
67//
68 fParamsSol(0),
69 fParamsDip(0),
70 fParamsTPCInt(0)
71//
a1dde210 72{
da7cd221 73 // default constructor
a1dde210 74}
75
da7cd221 76//__________________________________________________________________________________________
77AliMagWrapCheb::AliMagWrapCheb(const AliMagWrapCheb& src) :
78 TNamed(src),
79 fNParamsSol(0),
80 fNSegZSol(0),
81 fNParamsTPCInt(0),
82 fNSegZTPCInt(0),
83 fNParamsDip(0),
84//
85 fNZSegDip(0),
86 fNYSegDip(0),
87 fNXSegDip(0),
88//
89 fSegZSol(0),
90 fSegRSol(0),
91//
92 fSegZTPCInt(0),
93 fSegRTPCInt(0),
94//
95 fSegZDip(0),
96 fSegYDip(0),
97 fSegXDip(0),
98//
99 fNSegRSol(0),
100 fSegZIdSol(0),
101//
102 fNSegRTPCInt(0),
103 fSegZIdTPCInt(0),
104//
105 fBegSegYDip(0),
106 fNSegYDip(0),
107 fBegSegXDip(0),
108 fNSegXDip(0),
109 fSegIDDip(0),
110//
111 fMinZSol(1e6),
112 fMaxZSol(-1e6),
113 fMaxRSol(-1e6),
114//
115 fMinZDip(1e6),
116 fMaxZDip(-1e6),
117//
118 fMinZTPCInt(1e6),
119 fMaxZTPCInt(-1e6),
120 fMaxRTPCInt(-1e6),
121//
122 fParamsSol(0),
123 fParamsDip(0),
124 fParamsTPCInt(0)
a1dde210 125{
da7cd221 126 // copy constructor
127 CopyFrom(src);
128}
129
130//__________________________________________________________________________________________
131void AliMagWrapCheb::CopyFrom(const AliMagWrapCheb& src)
132{
133 // copy method
134 Clear();
135 SetName(src.GetName());
136 SetTitle(src.GetTitle());
137 fNParamsSol = src.fNParamsSol;
138 fNSegZSol = src.fNSegZSol;
139 fNParamsTPCInt = src.fNParamsTPCInt;
140 fNSegZTPCInt = src.fNSegZTPCInt;
141 fNParamsDip = src.fNParamsDip;
a1dde210 142 //
da7cd221 143 fNZSegDip = src.fNZSegDip;
144 fNYSegDip = src.fNYSegDip;
145 fNXSegDip = src.fNXSegDip;
146 //
147 fMinZSol = src.fMinZSol;
148 fMaxZSol = src.fMaxZSol;
149 fMaxRSol = src.fMaxRSol;
150 //
151 fMinZDip = src.fMinZDip;
152 fMaxZDip = src.fMaxZDip;
153 //
154 fMinZTPCInt = src.fMinZTPCInt;
155 fMaxZTPCInt = src.fMaxZTPCInt;
156 fMaxRTPCInt = src.fMaxRTPCInt;
157 //
158 if (src.fNParamsSol) {
159 memcpy(fSegZSol = new Float_t[fNSegZSol], src.fSegZSol, sizeof(Float_t)*fNSegZSol);
160 memcpy(fSegRSol = new Float_t[fNParamsSol], src.fSegRSol, sizeof(Float_t)*fNParamsSol);
161 memcpy(fNSegRSol = new Int_t[fNSegZSol], src.fNSegRSol, sizeof(Int_t)*fNSegZSol);
162 memcpy(fSegZIdSol= new Int_t[fNSegZSol], src.fSegZIdSol, sizeof(Int_t)*fNSegZSol);
163 fParamsSol = new TObjArray(fNParamsSol);
164 for (int i=0;i<fNParamsSol;i++) fParamsSol->AddAtAndExpand(new AliCheb3D(*src.GetParamSol(i)),i);
a1dde210 165 }
da7cd221 166 //
167 if (src.fNParamsDip) {
168 memcpy(fSegZDip = new Float_t[fNZSegDip], src.fSegZDip, sizeof(Float_t)*fNZSegDip);
169 memcpy(fSegYDip = new Float_t[fNYSegDip], src.fSegYDip, sizeof(Float_t)*fNYSegDip);
170 memcpy(fSegXDip = new Float_t[fNXSegDip], src.fSegZDip, sizeof(Float_t)*fNXSegDip);
171 memcpy(fBegSegYDip= new Int_t[fNZSegDip], src.fBegSegYDip, sizeof(Int_t)*fNZSegDip);
172 memcpy(fNSegYDip = new Int_t[fNZSegDip], src.fNSegYDip, sizeof(Int_t)*fNZSegDip);
173 memcpy(fBegSegXDip= new Int_t[fNYSegDip], src.fBegSegXDip, sizeof(Int_t)*fNYSegDip);
174 memcpy(fNSegXDip = new Int_t[fNYSegDip], src.fNSegXDip, sizeof(Int_t)*fNYSegDip);
175 memcpy(fSegIDDip = new Int_t[fNXSegDip], src.fSegIDDip, sizeof(Int_t)*fNXSegDip);
176 fParamsDip = new TObjArray(fNParamsDip);
177 for (int i=0;i<fNParamsDip;i++) fParamsDip->AddAtAndExpand(new AliCheb3D(*src.GetParamDip(i)),i);
a1dde210 178 }
179 //
da7cd221 180 if (src.fNParamsTPCInt) {
181 memcpy(fSegZTPCInt = new Float_t[fNSegZTPCInt], src.fSegZTPCInt, sizeof(Float_t)*fNSegZTPCInt);
182 memcpy(fSegRTPCInt = new Float_t[fNParamsTPCInt], src.fSegRTPCInt, sizeof(Float_t)*fNParamsTPCInt);
183 memcpy(fNSegRTPCInt = new Int_t[fNSegZTPCInt], src.fNSegRTPCInt, sizeof(Int_t)*fNSegZTPCInt);
184 memcpy(fSegZIdTPCInt= new Int_t[fNSegZTPCInt], src.fSegZIdTPCInt, sizeof(Int_t)*fNSegZTPCInt);
185 fParamsTPCInt = new TObjArray(fNParamsTPCInt);
186 for (int i=0;i<fNParamsTPCInt;i++) fParamsTPCInt->AddAtAndExpand(new AliCheb3D(*src.GetParamTPCInt(i)),i);
187 }
188 //
189}
190
191//__________________________________________________________________________________________
192AliMagWrapCheb& AliMagWrapCheb::operator=(const AliMagWrapCheb& rhs)
193{
194 // assignment
195 if (this != &rhs) {
196 Clear();
197 CopyFrom(rhs);
a1dde210 198 }
da7cd221 199 return *this;
200 //
a1dde210 201}
202
da7cd221 203//__________________________________________________________________________________________
204void AliMagWrapCheb::Clear(const Option_t *)
205{
206 // clear all dynamic parts
207 if (fNParamsSol) {
208 delete fParamsSol;
209 delete[] fSegZSol;
210 delete[] fSegRSol;
211 delete[] fNSegRSol;
212 delete[] fSegZIdSol;
213 }
214 //
215 if (fNParamsTPCInt) {
216 delete fParamsTPCInt;
217 delete[] fSegZTPCInt;
218 delete[] fSegRTPCInt;
219 delete[] fNSegRTPCInt;
220 delete[] fSegZIdTPCInt;
221 }
222 //
223 if (fNParamsDip) {
224 delete fParamsDip;
225 delete[] fSegZDip;
226 delete[] fSegYDip;
227 delete[] fSegXDip;
228 delete[] fBegSegYDip;
229 delete[] fNSegYDip;
230 delete[] fBegSegXDip;
231 delete[] fNSegXDip;
232 delete[] fSegIDDip;
233 }
234 fNParamsSol = fNParamsTPCInt = fNParamsDip = fNZSegDip = fNYSegDip = fNXSegDip = 0;
235 fNSegZSol = fNSegZTPCInt = 0;
236 fMinZSol = fMinZDip = fMinZTPCInt = 1e6;
237 fMaxZSol = fMaxZDip = fMaxZTPCInt = fMaxRSol = fMaxRTPCInt = -1e6;
238 //
239}
a1dde210 240
da7cd221 241//__________________________________________________________________________________________
242void AliMagWrapCheb::Field(const float *xyz, float *b) const
a1dde210 243{
da7cd221 244 // compute field in cartesian coordinates. If point is outside of the parameterized region
245 // get it at closest valid point
246 static float rphiz[3];
247 //
248#ifndef _BRING_TO_BOUNDARY_ // exact matching to fitted volume is requested
249 if ( !(xyz[2]>=GetMinZSol()&&xyz[2]<=GetMaxZSol()) &&
250 !(xyz[2]>=GetMinZDip()&&xyz[2]<=GetMaxZDip()) ) {for (int i=3;i--;) b[i]=0; return;}
251#endif
252 //
253 if (xyz[2]<fMaxZDip) { // dipole part?
254#ifndef _BRING_TO_BOUNDARY_
255 AliCheb3D* par = GetParamDip(FindDipSegment(xyz));
256 if (par->IsInside(xyz)) {par->Eval(xyz,b); return;}
257 for (int i=3;i--;) b[i]=0; return;
258#else
259 GetParamDip(FindDipSegment(xyz))->Eval(xyz,b); return;
260#endif
261 }
262 //
263 // Sol region: convert coordinates to cyl system
264 CartToCyl(xyz,rphiz);
265#ifndef _BRING_TO_BOUNDARY_
266 if (rphiz[0]>GetMaxRSol()) {for (int i=3;i--;) b[i]=0; return;}
267#endif
268 //
269 FieldCylSol(rphiz,b);
270 //
271 // convert field to cartesian system
272 CylToCartCylB(rphiz, b,b);
273 //
a1dde210 274}
275
da7cd221 276//__________________________________________________________________________________________
277void AliMagWrapCheb::Field(const Double_t *xyz, Double_t *b) const
a1dde210 278{
da7cd221 279 // compute field in cartesian coordinates. If point is outside of the parameterized region
280 // get it at closest valid point
281 static Double_t rphiz[3];
282 //
283#ifndef _BRING_TO_BOUNDARY_ // exact matching to fitted volume is requested
284 if ( !(xyz[2]>=GetMinZSol()&&xyz[2]<=GetMaxZSol()) &&
285 !(xyz[2]>=GetMinZDip()&&xyz[2]<=GetMaxZDip()) ) {for (int i=3;i--;) b[i]=0; return;}
286#endif
287 //
288 if (xyz[2]<fMaxZDip) { // dipole part?
289#ifndef _BRING_TO_BOUNDARY_
290 AliCheb3D* par = GetParamDip(FindDipSegment(xyz));
291 if (par->IsInside(xyz)) {par->Eval(xyz,b); return;}
292 for (int i=3;i--;) b[i]=0; return;
293#else
294 GetParamDip(FindDipSegment(xyz))->Eval(xyz,b); return;
295#endif
296 }
297 //
298 // Sol region: convert coordinates to cyl system
299 CartToCyl(xyz,rphiz);
300#ifndef _BRING_TO_BOUNDARY_
301 if (rphiz[0]>GetMaxRSol()) {for (int i=3;i--;) b[i]=0; return;}
302#endif
303 //
304 FieldCylSol(rphiz,b);
305 //
306 // convert field to cartesian system
307 CylToCartCylB(rphiz, b,b);
308 //
a1dde210 309}
310
da7cd221 311//__________________________________________________________________________________________
611fa94a 312void AliMagWrapCheb::GetTPCInt(const Float_t *xyz, Float_t *b) const
a1dde210 313{
da7cd221 314 // compute TPC region field integral in cartesian coordinates.
315 // If point is outside of the parameterized region get it at closeset valid point
316 static float rphiz[3];
317 //
318 // TPCInt region
319 // convert coordinates to cyl system
320 CartToCyl(xyz,rphiz);
321#ifndef _BRING_TO_BOUNDARY_
322 if ( (rphiz[2]>GetMaxZTPCInt()||rphiz[2]<GetMinZTPCInt()) ||
323 rphiz[0]>GetMaxRTPCInt()) {for (int i=3;i--;) b[i]=0; return;}
324#endif
325 //
326 GetTPCIntCyl(rphiz,b);
327 //
328 // convert field to cartesian system
329 CylToCartCylB(rphiz, b,b);
330 //
331}
332
333//__________________________________________________________________________________________
334void AliMagWrapCheb::FieldCylSol(const float *rphiz, float *b) const
335{
336 // compute Solenoid field in Cylindircal coordinates
337 // note: if the point is outside the volume get the field in closest parameterized point
338 int SolZId = 0;
339 while (rphiz[2]>fSegZSol[SolZId] && SolZId<fNSegZSol-1) ++SolZId; // find Z segment
340 int SolRId = fSegZIdSol[SolZId]; // first R segment for this Z
341 int SolRMax = SolRId + fNSegRSol[SolZId];
342 while (rphiz[0]>fSegRSol[SolRId] && SolRId<SolRMax-1) ++SolRId; // find R segment
343 GetParamSol( SolRId )->Eval(rphiz,b);
344 //
345}
346
347//__________________________________________________________________________________________
348void AliMagWrapCheb::FieldCylSol(const Double_t *rphiz, Double_t *b) const
349{
350 // compute Solenoid field in Cylindircal coordinates
351 // note: if the point is outside the volume get the field in closest parameterized point
352 int SolZId = 0;
353 while (rphiz[2]>fSegZSol[SolZId] && SolZId<fNSegZSol-1) ++SolZId; // find Z segment
354 int SolRId = fSegZIdSol[SolZId]; // first R segment for this Z
355 int SolRMax = SolRId + fNSegRSol[SolZId];
356 while (rphiz[0]>fSegRSol[SolRId] && SolRId<SolRMax-1) ++SolRId; // find R segment
357 GetParamSol( SolRId )->Eval(rphiz,b);
a1dde210 358 //
a1dde210 359}
360
da7cd221 361//__________________________________________________________________________________________
611fa94a 362void AliMagWrapCheb::GetTPCIntCyl(const Float_t *rphiz, Float_t *b) const
a1dde210 363{
da7cd221 364 // compute field integral in TPC region in Cylindircal coordinates
365 // note: the check for the point being inside the parameterized region is done outside
366 int tpcIntZId = 0;
367 while (rphiz[2]>fSegZTPCInt[tpcIntZId] && tpcIntZId<fNSegZTPCInt) ++tpcIntZId; // find Z segment
368 int tpcIntRId = fSegZIdTPCInt[tpcIntZId]; // first R segment for this Z
369 int tpcIntRIdMax = tpcIntRId + fNSegRTPCInt[tpcIntZId];
370 while (rphiz[0]>fSegRTPCInt[tpcIntRId] && tpcIntRId<tpcIntRIdMax) ++tpcIntRId; // find R segment
371 GetParamTPCInt( tpcIntRId )->Eval(rphiz,b);
372 //
a1dde210 373}
374
da7cd221 375
376//__________________________________________________________________________________________
377void AliMagWrapCheb::Print(Option_t *) const
ff66b122 378{
da7cd221 379 // print info
380 printf("Alice magnetic field parameterized by Chebyshev polynomials\n");
381 printf("Segmentation for Solenoid (%+.2f<Z<%+.2f cm | R<%.2f cm)\n",fMinZSol,fMaxZSol,fMaxRSol);
ff66b122 382 //
da7cd221 383 if (fParamsSol) fParamsSol->Print();
384 /*
385 for (int iz=0;iz<fNSegZSol;iz++) {
386 AliCheb3D* param = GetParamSol( fSegZIdSol[iz] );
387 printf("*** Z Segment %2d (%+7.2f<Z<%+7.2f)\t***\n",iz,param->GetBoundMin(2),param->GetBoundMax(2));
388 for (int ir=0;ir<fNSegRSol[iz];ir++) {
389 param = GetParamSol( fSegZIdSol[iz]+ir );
390 printf(" R Segment %2d (%+7.2f<R<%+7.2f, Precision: %.1e) (ID=%2d)\n",ir, param->GetBoundMin(0),
391 param->GetBoundMax(0),param->GetPrecision(),fSegZIdSol[iz]+ir);
392 }
393 }
394 */
395 //
396 printf("Segmentation for TPC field integral (%+.2f<Z<%+.2f cm | R<%.2f cm)\n",fMinZTPCInt,fMaxZTPCInt,fMaxRTPCInt);
397 //
398 if (fParamsTPCInt) fParamsTPCInt->Print();
399 /*
400 for (int iz=0;iz<fNSegZTPCInt;iz++) {
401 AliCheb3D* param = GetParamTPCInt( fSegZIdTPCInt[iz] );
402 printf("*** Z Segment %2d (%+7.2f<Z<%+7.2f)\t***\n",iz,param->GetBoundMin(2),param->GetBoundMax(2));
403 for (int ir=0;ir<fNSegRTPCInt[iz];ir++) {
404 param = GetParamTPCInt( fSegZIdTPCInt[iz]+ir );
405 printf(" R Segment %2d (%+7.2f<R<%+7.2f, Precision: %.1e) (ID=%2d)\n",ir, param->GetBoundMin(0),
406 param->GetBoundMax(0),param->GetPrecision(),fSegZIdTPCInt[iz]+ir);
ff66b122 407 }
da7cd221 408 }
409 */
410 //
411 printf("Segmentation for Dipole (%+.2f<Z<%+.2f cm)\n",fMinZDip,fMaxZDip);
412 if (fParamsDip) fParamsDip->Print();
413 //
414
415
ff66b122 416}
da7cd221 417#ifdef _INC_CREATION_ALICHEB3D_
418//_______________________________________________
419void AliMagWrapCheb::LoadData(const char* inpfile)
420{
421 // read coefficients data from the text file
422 //
423 TString strf = inpfile;
424 gSystem->ExpandPathName(strf);
425 FILE* stream = fopen(strf,"r");
426 if (!stream) {
427 printf("Did not find input file %s\n",strf.Data());
428 return;
429 }
430 //
431 TString buffs;
432 AliCheb3DCalc::ReadLine(buffs,stream);
433 if (!buffs.BeginsWith("START")) {
434 Error("LoadData","Expected: \"START <name>\", found \"%s\"\nStop\n",buffs.Data());
435 exit(1);
436 }
437 if (buffs.First(' ')>0) SetName(buffs.Data()+buffs.First(' ')+1);
438 //
439 // Solenoid part -----------------------------------------------------------
440 AliCheb3DCalc::ReadLine(buffs,stream);
441 if (!buffs.BeginsWith("START SOLENOID")) {
442 Error("LoadData","Expected: \"START SOLENOID\", found \"%s\"\nStop\n",buffs.Data());
443 exit(1);
444 }
445 AliCheb3DCalc::ReadLine(buffs,stream); // nparam
446 int nparSol = buffs.Atoi();
447 //
448 for (int ip=0;ip<nparSol;ip++) {
449 AliCheb3D* cheb = new AliCheb3D();
450 cheb->LoadData(stream);
451 AddParamSol(cheb);
452 }
453 //
454 AliCheb3DCalc::ReadLine(buffs,stream);
455 if (!buffs.BeginsWith("END SOLENOID")) {
456 Error("LoadData","Expected \"END SOLENOID\", found \"%s\"\nStop\n",buffs.Data());
457 exit(1);
458 }
459 //
460 // TPCInt part -----------------------------------------------------------
461 AliCheb3DCalc::ReadLine(buffs,stream);
462 if (!buffs.BeginsWith("START TPCINT")) {
463 Error("LoadData","Expected: \"START TPCINT\", found \"%s\"\nStop\n",buffs.Data());
464 exit(1);
465 }
466 AliCheb3DCalc::ReadLine(buffs,stream); // nparam
467 int nparTPCInt = buffs.Atoi();
468 //
469 for (int ip=0;ip<nparTPCInt;ip++) {
470 AliCheb3D* cheb = new AliCheb3D();
471 cheb->LoadData(stream);
472 AddParamTPCInt(cheb);
473 }
474 //
475 AliCheb3DCalc::ReadLine(buffs,stream);
476 if (!buffs.BeginsWith("END TPCINT")) {
477 Error("LoadData","Expected \"END TPCINT\", found \"%s\"\nStop\n",buffs.Data());
478 exit(1);
479 }
480 //
481 // Dipole part -----------------------------------------------------------
482 AliCheb3DCalc::ReadLine(buffs,stream);
483 if (!buffs.BeginsWith("START DIPOLE")) {
484 Error("LoadData","Expected: \"START DIPOLE\", found \"%s\"\nStop\n",buffs.Data());
485 exit(1);
486 }
487 AliCheb3DCalc::ReadLine(buffs,stream); // nparam
488 int nparDip = buffs.Atoi();
489 //
490 for (int ip=0;ip<nparDip;ip++) {
491 AliCheb3D* cheb = new AliCheb3D();
492 cheb->LoadData(stream);
493 AddParamDip(cheb);
494 }
495 //
496 AliCheb3DCalc::ReadLine(buffs,stream);
497 if (!buffs.BeginsWith("END DIPOLE")) {
498 Error("LoadData","Expected \"END DIPOLE\", found \"%s\"\nStop\n",GetName(),buffs.Data());
499 exit(1);
500 }
501 //
502 AliCheb3DCalc::ReadLine(buffs,stream);
503 if (!buffs.BeginsWith("END") || !buffs.Contains(GetName())) {
504 Error("LoadData","Expected: \"END %s\", found \"%s\"\nStop\n",GetName(),buffs.Data());
505 exit(1);
506 }
507 //
508 // ---------------------------------------------------------------------------
509 fclose(stream);
510 BuildTableSol();
511 BuildTableTPCInt();
512 BuildTableDip();
513 printf("Loaded magnetic field \"%s\" from %s\n",GetName(),strf.Data());
514 //
515}
516#endif
ff66b122 517
da7cd221 518//_______________________________________________
519#ifdef _INC_CREATION_ALICHEB3D_
520
521//__________________________________________________________________________________________
522AliMagWrapCheb::AliMagWrapCheb(const char* inputFile) :
523 fNParamsSol(0),
524 fNSegZSol(0),
525 fNParamsTPCInt(0),
526 fNSegZTPCInt(0),
527 fNParamsDip(0),
528//
529 fNZSegDip(0),
530 fNYSegDip(0),
531 fNXSegDip(0),
532//
533 fSegZSol(0),
534 fSegRSol(0),
535//
536 fSegZTPCInt(0),
537 fSegRTPCInt(0),
538//
539 fSegZDip(0),
540 fSegYDip(0),
541 fSegXDip(0),
542//
543 fNSegRSol(0),
544 fSegZIdSol(0),
545//
546 fNSegRTPCInt(0),
547 fSegZIdTPCInt(0),
548//
549 fBegSegYDip(0),
550 fNSegYDip(0),
551 fBegSegXDip(0),
552 fNSegXDip(0),
553 fSegIDDip(0),
554//
555 fMinZSol(0),
556 fMaxZSol(0),
557 fMaxRSol(0),
558//
559 fMinZDip(0),
560 fMaxZDip(0),
561//
562 fMinZTPCInt(0),
563 fMaxZTPCInt(0),
564 fMaxRTPCInt(0),
565//
566 fParamsSol(0),
567 fParamsDip(0),
568 fParamsTPCInt(0)
569//
570//
571{
572 // construct from coeffs from the text file
573 LoadData(inputFile);
574}
575
576//__________________________________________________________________________________________
577void AliMagWrapCheb::AddParamSol(const AliCheb3D* param)
578{
579 // adds new parameterization piece for Sol
580 // NOTE: pieces must be added strictly in increasing R then increasing Z order
581 //
582 if (!fParamsSol) fParamsSol = new TObjArray();
583 fParamsSol->Add( (AliCheb3D*)param );
584 fNParamsSol++;
585 //
586}
587
588//__________________________________________________________________________________________
589void AliMagWrapCheb::AddParamTPCInt(const AliCheb3D* param)
590{
591 // adds new parameterization piece for TPCInt
592 // NOTE: pieces must be added strictly in increasing R then increasing Z order
593 //
594 if (!fParamsTPCInt) fParamsTPCInt = new TObjArray();
595 fParamsTPCInt->Add( (AliCheb3D*)param);
596 fNParamsTPCInt++;
597 //
598}
599
600//__________________________________________________________________________________________
601void AliMagWrapCheb::AddParamDip(const AliCheb3D* param)
a1dde210 602{
da7cd221 603 // adds new parameterization piece for Dipole
a1dde210 604 //
da7cd221 605 if (!fParamsDip) fParamsDip = new TObjArray();
606 fParamsDip->Add( (AliCheb3D*)param);
607 fNParamsDip++;
608 //
609}
610
611//__________________________________________________________________________________________
612void AliMagWrapCheb::ResetTPCInt()
613{
614 // clean TPC field integral (used for update)
615 if (!fNParamsTPCInt) return;
616 delete fParamsTPCInt;
617 delete[] fSegZTPCInt;
618 delete[] fSegRTPCInt;
619 delete[] fNSegRTPCInt;
620 delete[] fSegZIdTPCInt;
621 //
622 fNParamsTPCInt = 0;
623 fNSegZTPCInt = 0;
624 fSegZTPCInt = 0;
625 fSegRTPCInt = 0;
626 fNSegRTPCInt = 0;
627 fSegZIdTPCInt = 0;
628 fMinZTPCInt = 0;
629 fMaxZTPCInt = 0;
630 fMaxRTPCInt = 0;
631 fParamsTPCInt = 0;
632 //
633}
634
635//__________________________________________________
636void AliMagWrapCheb::BuildTableDip()
637{
638 // build lookup table for dipole
639 //
640 TArrayF segY,segX;
641 TArrayI begSegYDip,begSegXDip;
642 TArrayI nsegYDip,nsegXDip;
643 TArrayI segID;
644 float *tmpSegZ,*tmpSegY,*tmpSegX;
645 //
646 // create segmentation in Z
647 fNZSegDip = SegmentDipDimension(&tmpSegZ, fParamsDip, fNParamsDip, 2, 1,-1, 1,-1, 1,-1) - 1;
648 fNYSegDip = 0;
649 fNXSegDip = 0;
650 //
651 // for each Z slice create segmentation in Y
652 begSegYDip.Set(fNZSegDip);
653 nsegYDip.Set(fNZSegDip);
654 float xyz[3];
655 for (int iz=0;iz<fNZSegDip;iz++) {
656 printf("\nZSegment#%d %+e : %+e\n",iz,tmpSegZ[iz],tmpSegZ[iz+1]);
657 int ny = SegmentDipDimension(&tmpSegY, fParamsDip, fNParamsDip, 1,
658 1,-1, 1,-1, tmpSegZ[iz],tmpSegZ[iz+1]) - 1;
659 segY.Set(ny + fNYSegDip);
660 for (int iy=0;iy<ny;iy++) segY[fNYSegDip+iy] = tmpSegY[iy];
661 begSegYDip[iz] = fNYSegDip;
662 nsegYDip[iz] = ny;
663 printf(" Found %d YSegments, to start from %d\n",ny, begSegYDip[iz]);
664 //
665 // for each slice in Z and Y create segmentation in X
666 begSegXDip.Set(fNYSegDip+ny);
667 nsegXDip.Set(fNYSegDip+ny);
668 xyz[2] = (tmpSegZ[iz]+tmpSegZ[iz+1])/2.; // mean Z of this segment
669 //
670 for (int iy=0;iy<ny;iy++) {
671 int isg = fNYSegDip+iy;
672 printf("\n YSegment#%d %+e : %+e\n",iy, tmpSegY[iy],tmpSegY[iy+1]);
673 int nx = SegmentDipDimension(&tmpSegX, fParamsDip, fNParamsDip, 0,
674 1,-1, tmpSegY[iy],tmpSegY[iy+1], tmpSegZ[iz],tmpSegZ[iz+1]) - 1;
675 //
676 segX.Set(nx + fNXSegDip);
677 for (int ix=0;ix<nx;ix++) segX[fNXSegDip+ix] = tmpSegX[ix];
678 begSegXDip[isg] = fNXSegDip;
679 nsegXDip[isg] = nx;
680 printf(" Found %d XSegments, to start from %d\n",nx, begSegXDip[isg]);
681 //
682 segID.Set(fNXSegDip+nx);
683 //
684 // find corresponding params
685 xyz[1] = (tmpSegY[iy]+tmpSegY[iy+1])/2.; // mean Y of this segment
686 //
687 for (int ix=0;ix<nx;ix++) {
688 xyz[0] = (tmpSegX[ix]+tmpSegX[ix+1])/2.; // mean X of this segment
689 for (int ipar=0;ipar<fNParamsDip;ipar++) {
690 AliCheb3D* cheb = (AliCheb3D*) fParamsDip->At(ipar);
691 if (!cheb->IsInside(xyz)) continue;
692 segID[fNXSegDip+ix] = ipar;
693 break;
95d9681f 694 }
da7cd221 695 }
696 fNXSegDip += nx;
697 //
698 delete[] tmpSegX;
5de97576 699 }
da7cd221 700 delete[] tmpSegY;
701 fNYSegDip += ny;
702 }
703 //
704 fMinZDip = tmpSegZ[0];
705 fMaxZDip = tmpSegZ[fNZSegDip];
706 fSegZDip = new Float_t[fNZSegDip];
707 for (int i=fNZSegDip;i--;) fSegZDip[i] = tmpSegZ[i];
708 delete[] tmpSegZ;
709 //
710 fSegYDip = new Float_t[fNYSegDip];
711 fSegXDip = new Float_t[fNXSegDip];
712 fBegSegYDip = new Int_t[fNZSegDip];
713 fNSegYDip = new Int_t[fNZSegDip];
714 fBegSegXDip = new Int_t[fNYSegDip];
715 fNSegXDip = new Int_t[fNYSegDip];
716 fSegIDDip = new Int_t[fNXSegDip];
717 //
718 for (int i=fNYSegDip;i--;) fSegYDip[i] = segY[i];
719 for (int i=fNXSegDip;i--;) fSegXDip[i] = segX[i];
720 for (int i=fNZSegDip;i--;) {fBegSegYDip[i] = begSegYDip[i]; fNSegYDip[i] = nsegYDip[i];}
721 for (int i=fNYSegDip;i--;) {fBegSegXDip[i] = begSegXDip[i]; fNSegXDip[i] = nsegXDip[i];}
722 for (int i=fNXSegDip;i--;) {fSegIDDip[i] = segID[i];}
723 //
a1dde210 724}
725
da7cd221 726//__________________________________________________________________________________________
727void AliMagWrapCheb::BuildTableSol()
a1dde210 728{
da7cd221 729 // build the indexes for each parameterization of Solenoid
730 //
731 const float kSafety=0.001;
732 //
733 if (fNParamsSol<1) return;
734 fNSegZSol = 0;
735 fMaxRSol = 0;
736 fSegRSol = new Float_t[fNParamsSol];
737 float *tmpbufF = new float[fNParamsSol+1];
738 int *tmpbufI = new int[fNParamsSol+1];
739 int *tmpbufI1 = new int[fNParamsSol+1];
740 //
741 // count number of Z slices and number of R slices in each Z slice
742 for (int ip=0;ip<fNParamsSol;ip++) {
743 if (ip==0 || (GetParamSol(ip)->GetBoundMax(2)-GetParamSol(ip-1)->GetBoundMax(2))>kSafety) { // new Z slice
744 tmpbufF[fNSegZSol] = GetParamSol(ip)->GetBoundMax(2); //
745 tmpbufI[fNSegZSol] = 0;
746 tmpbufI1[fNSegZSol++] = ip;
747 }
748 fSegRSol[ip] = GetParamSol(ip)->GetBoundMax(0); // upper R
749 tmpbufI[fNSegZSol-1]++;
750 if (fMaxRSol<fSegRSol[ip]) fMaxRSol = fSegRSol[ip];
a1dde210 751 }
da7cd221 752 //
753 fSegZSol = new Float_t[fNSegZSol];
754 fSegZIdSol = new Int_t[fNSegZSol];
755 fNSegRSol = new Int_t[fNSegZSol];
756 for (int iz=0;iz<fNSegZSol;iz++) {
757 fSegZSol[iz] = tmpbufF[iz];
758 fNSegRSol[iz] = tmpbufI[iz];
759 fSegZIdSol[iz] = tmpbufI1[iz];
760 }
761 //
762 fMinZSol = GetParamSol(0)->GetBoundMin(2);
763 fMaxZSol = GetParamSol(fNParamsSol-1)->GetBoundMax(2);
764 //
765 delete[] tmpbufF;
766 delete[] tmpbufI;
767 delete[] tmpbufI1;
768 //
769 //
a1dde210 770}
da7cd221 771
772//__________________________________________________________________________________________
773void AliMagWrapCheb::BuildTableTPCInt()
774{
775 // build the indexes for each parameterization of TPC field integral
776 //
777 const float kSafety=0.001;
778 //
779 if (fNParamsTPCInt<1) return;
780 fNSegZTPCInt = 0;
781 fSegRTPCInt = new Float_t[fNParamsTPCInt];
782 float *tmpbufF = new float[fNParamsTPCInt+1];
783 int *tmpbufI = new int[fNParamsTPCInt+1];
784 int *tmpbufI1 = new int[fNParamsTPCInt+1];
785 //
786 // count number of Z slices and number of R slices in each Z slice
787 for (int ip=0;ip<fNParamsTPCInt;ip++) {
788 if (ip==0 || (GetParamTPCInt(ip)->GetBoundMax(2)-GetParamTPCInt(ip-1)->GetBoundMax(2))>kSafety) { // new Z slice
789 tmpbufF[fNSegZTPCInt] = GetParamTPCInt(ip)->GetBoundMax(2); //
790 tmpbufI[fNSegZTPCInt] = 0;
791 tmpbufI1[fNSegZTPCInt++] = ip;
792 }
793 fSegRTPCInt[ip] = GetParamTPCInt(ip)->GetBoundMax(0); // upper R
794 tmpbufI[fNSegZTPCInt-1]++;
795 }
796 //
797 fSegZTPCInt = new Float_t[fNSegZTPCInt];
798 fSegZIdTPCInt = new Int_t[fNSegZTPCInt];
799 fNSegRTPCInt = new Int_t[fNSegZTPCInt];
800 for (int iz=0;iz<fNSegZTPCInt;iz++) {
801 fSegZTPCInt[iz] = tmpbufF[iz];
802 fNSegRTPCInt[iz] = tmpbufI[iz];
803 fSegZIdTPCInt[iz] = tmpbufI1[iz];
804 }
805 //
806 fMinZTPCInt = GetParamTPCInt(0)->GetBoundMin(2);
807 fMaxZTPCInt = GetParamTPCInt(fNParamsTPCInt-1)->GetBoundMax(2);
808 fMaxRTPCInt = GetParamTPCInt(fNParamsTPCInt-1)->GetBoundMax(0);
809 //
810 delete[] tmpbufF;
811 delete[] tmpbufI;
812 delete[] tmpbufI1;
813 //
814 //
815}
816
817void AliMagWrapCheb::SaveData(const char* outfile) const
818{
819 // writes coefficients data to output text file
820 TString strf = outfile;
821 gSystem->ExpandPathName(strf);
822 FILE* stream = fopen(strf,"w+");
823 //
824 // Sol part ---------------------------------------------------------
825 fprintf(stream,"# Set of Chebyshev parameterizations for ALICE magnetic field\nSTART %s\n",GetName());
826 fprintf(stream,"START SOLENOID\n#Number of pieces\n%d\n",fNParamsSol);
827 for (int ip=0;ip<fNParamsSol;ip++) GetParamSol(ip)->SaveData(stream);
828 fprintf(stream,"#\nEND SOLENOID\n");
829 //
830 // TPCInt part ---------------------------------------------------------
831 fprintf(stream,"# Set of Chebyshev parameterizations for ALICE magnetic field\nSTART %s\n",GetName());
832 fprintf(stream,"START TPCINT\n#Number of pieces\n%d\n",fNParamsTPCInt);
833 for (int ip=0;ip<fNParamsTPCInt;ip++) GetParamTPCInt(ip)->SaveData(stream);
834 fprintf(stream,"#\nEND TPCINT\n");
835 //
836 // Dip part ---------------------------------------------------------
837 fprintf(stream,"START DIPOLE\n#Number of pieces\n%d\n",fNParamsDip);
838 for (int ip=0;ip<fNParamsDip;ip++) GetParamDip(ip)->SaveData(stream);
839 fprintf(stream,"#\nEND DIPOLE\n");
840 //
841 fprintf(stream,"#\nEND %s\n",GetName());
842 //
843 fclose(stream);
844 //
845}
846
847Int_t AliMagWrapCheb::SegmentDipDimension(float** seg,const TObjArray* par,int npar, int dim,
848 float xmn,float xmx,float ymn,float ymx,float zmn,float zmx)
849{
850 // find all boundaries in deimension dim for boxes in given region.
851 // if mn>mx for given projection the check is not done for it.
852 float *tmpC = new float[2*npar];
853 int *tmpInd = new int[2*npar];
854 int nseg0 = 0;
855 for (int ip=0;ip<npar;ip++) {
856 AliCheb3D* cheb = (AliCheb3D*) par->At(ip);
857 if (xmn<xmx && (cheb->GetBoundMin(0)>(xmx+xmn)/2 || cheb->GetBoundMax(0)<(xmn+xmx)/2)) continue;
858 if (ymn<ymx && (cheb->GetBoundMin(1)>(ymx+ymn)/2 || cheb->GetBoundMax(1)<(ymn+ymx)/2)) continue;
859 if (zmn<zmx && (cheb->GetBoundMin(2)>(zmx+zmn)/2 || cheb->GetBoundMax(2)<(zmn+zmx)/2)) continue;
860 //
861 tmpC[nseg0++] = cheb->GetBoundMin(dim);
862 tmpC[nseg0++] = cheb->GetBoundMax(dim);
863 }
864 // range Dim's boundaries in increasing order
865 TMath::Sort(nseg0,tmpC,tmpInd,kFALSE);
866 // count number of really different Z's
867 int nseg = 0;
868 float cprev = -1e6;
869 for (int ip=0;ip<nseg0;ip++) {
870 if (TMath::Abs(cprev-tmpC[ tmpInd[ip] ])>1e-4) {
871 cprev = tmpC[ tmpInd[ip] ];
872 nseg++;
873 }
874 else tmpInd[ip] = -1; // supress redundant Z
875 }
876 //
877 *seg = new float[nseg]; // create final Z segmenations
878 nseg = 0;
879 for (int ip=0;ip<nseg0;ip++) if (tmpInd[ip]>=0) (*seg)[nseg++] = tmpC[ tmpInd[ip] ];
880 //
881 delete[] tmpC;
882 delete[] tmpInd;
883 return nseg;
884}
885
886#endif
887