1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
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 **************************************************************************/
16 #include "AliMagWrapCheb.h"
21 ClassImp(AliMagWrapCheb)
23 //__________________________________________________________________________________________
24 AliMagWrapCheb::AliMagWrapCheb() :
73 // default constructor
76 //__________________________________________________________________________________________
77 AliMagWrapCheb::AliMagWrapCheb(const AliMagWrapCheb& src) :
130 //__________________________________________________________________________________________
131 void AliMagWrapCheb::CopyFrom(const AliMagWrapCheb& src)
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;
143 fNZSegDip = src.fNZSegDip;
144 fNYSegDip = src.fNYSegDip;
145 fNXSegDip = src.fNXSegDip;
147 fMinZSol = src.fMinZSol;
148 fMaxZSol = src.fMaxZSol;
149 fMaxRSol = src.fMaxRSol;
151 fMinZDip = src.fMinZDip;
152 fMaxZDip = src.fMaxZDip;
154 fMinZTPCInt = src.fMinZTPCInt;
155 fMaxZTPCInt = src.fMaxZTPCInt;
156 fMaxRTPCInt = src.fMaxRTPCInt;
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);
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);
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);
191 //__________________________________________________________________________________________
192 AliMagWrapCheb& AliMagWrapCheb::operator=(const AliMagWrapCheb& rhs)
203 //__________________________________________________________________________________________
204 void AliMagWrapCheb::Clear(const Option_t *)
206 // clear all dynamic parts
215 if (fNParamsTPCInt) {
216 delete fParamsTPCInt;
217 delete[] fSegZTPCInt;
218 delete[] fSegRTPCInt;
219 delete[] fNSegRTPCInt;
220 delete[] fSegZIdTPCInt;
228 delete[] fBegSegYDip;
230 delete[] fBegSegXDip;
234 fNParamsSol = fNParamsTPCInt = fNParamsDip = fNZSegDip = fNYSegDip = fNXSegDip = 0;
235 fNSegZSol = fNSegZTPCInt = 0;
236 fMinZSol = fMinZDip = fMinZTPCInt = 1e6;
237 fMaxZSol = fMaxZDip = fMaxZTPCInt = fMaxRSol = fMaxRTPCInt = -1e6;
241 //__________________________________________________________________________________________
242 void AliMagWrapCheb::Field(const Double_t *xyz, Double_t *b) const
244 // compute field in cartesian coordinates. If point is outside of the parameterized region
245 // get it at closest valid point
246 static Double_t rphiz[3];
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;}
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;
259 GetParamDip(FindDipSegment(xyz))->Eval(xyz,b); return;
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;}
269 FieldCylSol(rphiz,b);
271 // convert field to cartesian system
272 CylToCartCylB(rphiz, b,b);
276 //__________________________________________________________________________________________
277 Double_t AliMagWrapCheb::GetBz(const Double_t *xyz) const
279 // compute Bz for the point in cartesian coordinates. If point is outside of the parameterized region
280 // get it at closest valid point
281 static Double_t rphiz[3];
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()) ) return 0;
288 if (xyz[2]<fMaxZDip) { // dipole part?
289 #ifndef _BRING_TO_BOUNDARY_
290 AliCheb3D* par = GetParamDip(FindDipSegment(xyz));
291 if (par->IsInside(xyz)) return par->Eval(xyz,2);
294 return GetParamDip(FindDipSegment(xyz))->Eval(xyz,2);
297 // Sol region: convert coordinates to cyl system
298 CartToCyl(xyz,rphiz);
299 return FieldCylSolBz(rphiz);
303 //__________________________________________________________________________________________
304 void AliMagWrapCheb::Print(Option_t *) const
307 printf("Alice magnetic field parameterized by Chebyshev polynomials\n");
308 printf("Segmentation for Solenoid (%+.2f<Z<%+.2f cm | R<%.2f cm)\n",fMinZSol,fMaxZSol,fMaxRSol);
310 if (fParamsSol) fParamsSol->Print();
312 for (int iz=0;iz<fNSegZSol;iz++) {
313 AliCheb3D* param = GetParamSol( fSegZIdSol[iz] );
314 printf("*** Z Segment %2d (%+7.2f<Z<%+7.2f)\t***\n",iz,param->GetBoundMin(2),param->GetBoundMax(2));
315 for (int ir=0;ir<fNSegRSol[iz];ir++) {
316 param = GetParamSol( fSegZIdSol[iz]+ir );
317 printf(" R Segment %2d (%+7.2f<R<%+7.2f, Precision: %.1e) (ID=%2d)\n",ir, param->GetBoundMin(0),
318 param->GetBoundMax(0),param->GetPrecision(),fSegZIdSol[iz]+ir);
323 printf("Segmentation for TPC field integral (%+.2f<Z<%+.2f cm | R<%.2f cm)\n",fMinZTPCInt,fMaxZTPCInt,fMaxRTPCInt);
325 if (fParamsTPCInt) fParamsTPCInt->Print();
327 for (int iz=0;iz<fNSegZTPCInt;iz++) {
328 AliCheb3D* param = GetParamTPCInt( fSegZIdTPCInt[iz] );
329 printf("*** Z Segment %2d (%+7.2f<Z<%+7.2f)\t***\n",iz,param->GetBoundMin(2),param->GetBoundMax(2));
330 for (int ir=0;ir<fNSegRTPCInt[iz];ir++) {
331 param = GetParamTPCInt( fSegZIdTPCInt[iz]+ir );
332 printf(" R Segment %2d (%+7.2f<R<%+7.2f, Precision: %.1e) (ID=%2d)\n",ir, param->GetBoundMin(0),
333 param->GetBoundMax(0),param->GetPrecision(),fSegZIdTPCInt[iz]+ir);
338 printf("Segmentation for Dipole (%+.2f<Z<%+.2f cm)\n",fMinZDip,fMaxZDip);
339 if (fParamsDip) fParamsDip->Print();
346 //__________________________________________________________________________________________________
347 Int_t AliMagWrapCheb::FindDipSegment(const Double_t *xyz) const
349 // find the segment containing point xyz. If it is outside find the closest segment
350 int xid,yid,zid = TMath::BinarySearch(fNZSegDip,fSegZDip,(Float_t)xyz[2]); // find zsegment
351 int ysegBeg = fBegSegYDip[zid];
353 for (yid=0;yid<fNSegYDip[zid];yid++) if (xyz[1]<fSegYDip[ysegBeg+yid]) break;
354 if ( --yid < 0 ) yid = 0;
357 int xsegBeg = fBegSegXDip[yid];
358 for (xid=0;xid<fNSegXDip[yid];xid++) if (xyz[0]<fSegXDip[xsegBeg+xid]) break;
359 if ( --xid < 0) xid = 0;
362 return fSegIDDip[xid];
365 //__________________________________________________________________________________________
366 void AliMagWrapCheb::GetTPCInt(const Double_t *xyz, Double_t *b) const
368 // compute TPC region field integral in cartesian coordinates.
369 // If point is outside of the parameterized region get it at closeset valid point
370 static Double_t rphiz[3];
373 // convert coordinates to cyl system
374 CartToCyl(xyz,rphiz);
375 #ifndef _BRING_TO_BOUNDARY_
376 if ( (rphiz[2]>GetMaxZTPCInt()||rphiz[2]<GetMinZTPCInt()) ||
377 rphiz[0]>GetMaxRTPCInt()) {for (int i=3;i--;) b[i]=0; return;}
380 GetTPCIntCyl(rphiz,b);
382 // convert field to cartesian system
383 CylToCartCylB(rphiz, b,b);
387 //__________________________________________________________________________________________
388 void AliMagWrapCheb::FieldCylSol(const Double_t *rphiz, Double_t *b) const
390 // compute Solenoid field in Cylindircal coordinates
391 // note: if the point is outside the volume get the field in closest parameterized point
393 while (rphiz[2]>fSegZSol[SolZId] && SolZId<fNSegZSol-1) ++SolZId; // find Z segment
394 int SolRId = fSegZIdSol[SolZId]; // first R segment for this Z
395 int SolRMax = SolRId + fNSegRSol[SolZId];
396 while (rphiz[0]>fSegRSol[SolRId] && SolRId<SolRMax-1) ++SolRId; // find R segment
397 GetParamSol( SolRId )->Eval(rphiz,b);
401 //__________________________________________________________________________________________
402 Double_t AliMagWrapCheb::FieldCylSolBz(const Double_t *rphiz) const
404 // compute Solenoid field in Cylindircal coordinates
405 // note: if the point is outside the volume get the field in closest parameterized point
407 while (rphiz[2]>fSegZSol[SolZId] && SolZId<fNSegZSol-1) ++SolZId; // find Z segment
408 int SolRId = fSegZIdSol[SolZId]; // first R segment for this Z
409 int SolRMax = SolRId + fNSegRSol[SolZId];
410 while (rphiz[0]>fSegRSol[SolRId] && SolRId<SolRMax-1) ++SolRId; // find R segment
411 return GetParamSol( SolRId )->Eval(rphiz,2);
415 //__________________________________________________________________________________________
416 void AliMagWrapCheb::GetTPCIntCyl(const Double_t *rphiz, Double_t *b) const
418 // compute field integral in TPC region in Cylindircal coordinates
419 // note: the check for the point being inside the parameterized region is done outside
421 while (rphiz[2]>fSegZTPCInt[tpcIntZId] && tpcIntZId<fNSegZTPCInt) ++tpcIntZId; // find Z segment
422 int tpcIntRId = fSegZIdTPCInt[tpcIntZId]; // first R segment for this Z
423 int tpcIntRIdMax = tpcIntRId + fNSegRTPCInt[tpcIntZId];
424 while (rphiz[0]>fSegRTPCInt[tpcIntRId] && tpcIntRId<tpcIntRIdMax) ++tpcIntRId; // find R segment
425 GetParamTPCInt( tpcIntRId )->Eval(rphiz,b);
430 #ifdef _INC_CREATION_ALICHEB3D_
431 //_______________________________________________
432 void AliMagWrapCheb::LoadData(const char* inpfile)
434 // read coefficients data from the text file
436 TString strf = inpfile;
437 gSystem->ExpandPathName(strf);
438 FILE* stream = fopen(strf,"r");
440 printf("Did not find input file %s\n",strf.Data());
445 AliCheb3DCalc::ReadLine(buffs,stream);
446 if (!buffs.BeginsWith("START")) {
447 Error("LoadData","Expected: \"START <name>\", found \"%s\"\nStop\n",buffs.Data());
450 if (buffs.First(' ')>0) SetName(buffs.Data()+buffs.First(' ')+1);
452 // Solenoid part -----------------------------------------------------------
453 AliCheb3DCalc::ReadLine(buffs,stream);
454 if (!buffs.BeginsWith("START SOLENOID")) {
455 Error("LoadData","Expected: \"START SOLENOID\", found \"%s\"\nStop\n",buffs.Data());
458 AliCheb3DCalc::ReadLine(buffs,stream); // nparam
459 int nparSol = buffs.Atoi();
461 for (int ip=0;ip<nparSol;ip++) {
462 AliCheb3D* cheb = new AliCheb3D();
463 cheb->LoadData(stream);
467 AliCheb3DCalc::ReadLine(buffs,stream);
468 if (!buffs.BeginsWith("END SOLENOID")) {
469 Error("LoadData","Expected \"END SOLENOID\", found \"%s\"\nStop\n",buffs.Data());
473 // TPCInt part -----------------------------------------------------------
474 AliCheb3DCalc::ReadLine(buffs,stream);
475 if (!buffs.BeginsWith("START TPCINT")) {
476 Error("LoadData","Expected: \"START TPCINT\", found \"%s\"\nStop\n",buffs.Data());
479 AliCheb3DCalc::ReadLine(buffs,stream); // nparam
480 int nparTPCInt = buffs.Atoi();
482 for (int ip=0;ip<nparTPCInt;ip++) {
483 AliCheb3D* cheb = new AliCheb3D();
484 cheb->LoadData(stream);
485 AddParamTPCInt(cheb);
488 AliCheb3DCalc::ReadLine(buffs,stream);
489 if (!buffs.BeginsWith("END TPCINT")) {
490 Error("LoadData","Expected \"END TPCINT\", found \"%s\"\nStop\n",buffs.Data());
494 // Dipole part -----------------------------------------------------------
495 AliCheb3DCalc::ReadLine(buffs,stream);
496 if (!buffs.BeginsWith("START DIPOLE")) {
497 Error("LoadData","Expected: \"START DIPOLE\", found \"%s\"\nStop\n",buffs.Data());
500 AliCheb3DCalc::ReadLine(buffs,stream); // nparam
501 int nparDip = buffs.Atoi();
503 for (int ip=0;ip<nparDip;ip++) {
504 AliCheb3D* cheb = new AliCheb3D();
505 cheb->LoadData(stream);
509 AliCheb3DCalc::ReadLine(buffs,stream);
510 if (!buffs.BeginsWith("END DIPOLE")) {
511 Error("LoadData","Expected \"END DIPOLE\", found \"%s\"\nStop\n",GetName(),buffs.Data());
515 AliCheb3DCalc::ReadLine(buffs,stream);
516 if (!buffs.BeginsWith("END") || !buffs.Contains(GetName())) {
517 Error("LoadData","Expected: \"END %s\", found \"%s\"\nStop\n",GetName(),buffs.Data());
521 // ---------------------------------------------------------------------------
526 printf("Loaded magnetic field \"%s\" from %s\n",GetName(),strf.Data());
531 //_______________________________________________
532 #ifdef _INC_CREATION_ALICHEB3D_
534 //__________________________________________________________________________________________
535 AliMagWrapCheb::AliMagWrapCheb(const char* inputFile) :
585 // construct from coeffs from the text file
589 //__________________________________________________________________________________________
590 void AliMagWrapCheb::AddParamSol(const AliCheb3D* param)
592 // adds new parameterization piece for Sol
593 // NOTE: pieces must be added strictly in increasing R then increasing Z order
595 if (!fParamsSol) fParamsSol = new TObjArray();
596 fParamsSol->Add( (AliCheb3D*)param );
601 //__________________________________________________________________________________________
602 void AliMagWrapCheb::AddParamTPCInt(const AliCheb3D* param)
604 // adds new parameterization piece for TPCInt
605 // NOTE: pieces must be added strictly in increasing R then increasing Z order
607 if (!fParamsTPCInt) fParamsTPCInt = new TObjArray();
608 fParamsTPCInt->Add( (AliCheb3D*)param);
613 //__________________________________________________________________________________________
614 void AliMagWrapCheb::AddParamDip(const AliCheb3D* param)
616 // adds new parameterization piece for Dipole
618 if (!fParamsDip) fParamsDip = new TObjArray();
619 fParamsDip->Add( (AliCheb3D*)param);
624 //__________________________________________________________________________________________
625 void AliMagWrapCheb::ResetTPCInt()
627 // clean TPC field integral (used for update)
628 if (!fNParamsTPCInt) return;
629 delete fParamsTPCInt;
630 delete[] fSegZTPCInt;
631 delete[] fSegRTPCInt;
632 delete[] fNSegRTPCInt;
633 delete[] fSegZIdTPCInt;
648 //__________________________________________________
649 void AliMagWrapCheb::BuildTableDip()
651 // build lookup table for dipole
654 TArrayI begSegYDip,begSegXDip;
655 TArrayI nsegYDip,nsegXDip;
657 float *tmpSegZ,*tmpSegY,*tmpSegX;
659 // create segmentation in Z
660 fNZSegDip = SegmentDipDimension(&tmpSegZ, fParamsDip, fNParamsDip, 2, 1,-1, 1,-1, 1,-1) - 1;
664 // for each Z slice create segmentation in Y
665 begSegYDip.Set(fNZSegDip);
666 nsegYDip.Set(fNZSegDip);
668 for (int iz=0;iz<fNZSegDip;iz++) {
669 printf("\nZSegment#%d %+e : %+e\n",iz,tmpSegZ[iz],tmpSegZ[iz+1]);
670 int ny = SegmentDipDimension(&tmpSegY, fParamsDip, fNParamsDip, 1,
671 1,-1, 1,-1, tmpSegZ[iz],tmpSegZ[iz+1]) - 1;
672 segY.Set(ny + fNYSegDip);
673 for (int iy=0;iy<ny;iy++) segY[fNYSegDip+iy] = tmpSegY[iy];
674 begSegYDip[iz] = fNYSegDip;
676 printf(" Found %d YSegments, to start from %d\n",ny, begSegYDip[iz]);
678 // for each slice in Z and Y create segmentation in X
679 begSegXDip.Set(fNYSegDip+ny);
680 nsegXDip.Set(fNYSegDip+ny);
681 xyz[2] = (tmpSegZ[iz]+tmpSegZ[iz+1])/2.; // mean Z of this segment
683 for (int iy=0;iy<ny;iy++) {
684 int isg = fNYSegDip+iy;
685 printf("\n YSegment#%d %+e : %+e\n",iy, tmpSegY[iy],tmpSegY[iy+1]);
686 int nx = SegmentDipDimension(&tmpSegX, fParamsDip, fNParamsDip, 0,
687 1,-1, tmpSegY[iy],tmpSegY[iy+1], tmpSegZ[iz],tmpSegZ[iz+1]) - 1;
689 segX.Set(nx + fNXSegDip);
690 for (int ix=0;ix<nx;ix++) segX[fNXSegDip+ix] = tmpSegX[ix];
691 begSegXDip[isg] = fNXSegDip;
693 printf(" Found %d XSegments, to start from %d\n",nx, begSegXDip[isg]);
695 segID.Set(fNXSegDip+nx);
697 // find corresponding params
698 xyz[1] = (tmpSegY[iy]+tmpSegY[iy+1])/2.; // mean Y of this segment
700 for (int ix=0;ix<nx;ix++) {
701 xyz[0] = (tmpSegX[ix]+tmpSegX[ix+1])/2.; // mean X of this segment
702 for (int ipar=0;ipar<fNParamsDip;ipar++) {
703 AliCheb3D* cheb = (AliCheb3D*) fParamsDip->At(ipar);
704 if (!cheb->IsInside(xyz)) continue;
705 segID[fNXSegDip+ix] = ipar;
717 fMinZDip = tmpSegZ[0];
718 fMaxZDip = tmpSegZ[fNZSegDip];
719 fSegZDip = new Float_t[fNZSegDip];
720 for (int i=fNZSegDip;i--;) fSegZDip[i] = tmpSegZ[i];
723 fSegYDip = new Float_t[fNYSegDip];
724 fSegXDip = new Float_t[fNXSegDip];
725 fBegSegYDip = new Int_t[fNZSegDip];
726 fNSegYDip = new Int_t[fNZSegDip];
727 fBegSegXDip = new Int_t[fNYSegDip];
728 fNSegXDip = new Int_t[fNYSegDip];
729 fSegIDDip = new Int_t[fNXSegDip];
731 for (int i=fNYSegDip;i--;) fSegYDip[i] = segY[i];
732 for (int i=fNXSegDip;i--;) fSegXDip[i] = segX[i];
733 for (int i=fNZSegDip;i--;) {fBegSegYDip[i] = begSegYDip[i]; fNSegYDip[i] = nsegYDip[i];}
734 for (int i=fNYSegDip;i--;) {fBegSegXDip[i] = begSegXDip[i]; fNSegXDip[i] = nsegXDip[i];}
735 for (int i=fNXSegDip;i--;) {fSegIDDip[i] = segID[i];}
739 //__________________________________________________________________________________________
740 void AliMagWrapCheb::BuildTableSol()
742 // build the indexes for each parameterization of Solenoid
744 const float kSafety=0.001;
746 if (fNParamsSol<1) return;
749 fSegRSol = new Float_t[fNParamsSol];
750 float *tmpbufF = new float[fNParamsSol+1];
751 int *tmpbufI = new int[fNParamsSol+1];
752 int *tmpbufI1 = new int[fNParamsSol+1];
754 // count number of Z slices and number of R slices in each Z slice
755 for (int ip=0;ip<fNParamsSol;ip++) {
756 if (ip==0 || (GetParamSol(ip)->GetBoundMax(2)-GetParamSol(ip-1)->GetBoundMax(2))>kSafety) { // new Z slice
757 tmpbufF[fNSegZSol] = GetParamSol(ip)->GetBoundMax(2); //
758 tmpbufI[fNSegZSol] = 0;
759 tmpbufI1[fNSegZSol++] = ip;
761 fSegRSol[ip] = GetParamSol(ip)->GetBoundMax(0); // upper R
762 tmpbufI[fNSegZSol-1]++;
763 if (fMaxRSol<fSegRSol[ip]) fMaxRSol = fSegRSol[ip];
766 fSegZSol = new Float_t[fNSegZSol];
767 fSegZIdSol = new Int_t[fNSegZSol];
768 fNSegRSol = new Int_t[fNSegZSol];
769 for (int iz=0;iz<fNSegZSol;iz++) {
770 fSegZSol[iz] = tmpbufF[iz];
771 fNSegRSol[iz] = tmpbufI[iz];
772 fSegZIdSol[iz] = tmpbufI1[iz];
775 fMinZSol = GetParamSol(0)->GetBoundMin(2);
776 fMaxZSol = GetParamSol(fNParamsSol-1)->GetBoundMax(2);
785 //__________________________________________________________________________________________
786 void AliMagWrapCheb::BuildTableTPCInt()
788 // build the indexes for each parameterization of TPC field integral
790 const float kSafety=0.001;
792 if (fNParamsTPCInt<1) return;
794 fSegRTPCInt = new Float_t[fNParamsTPCInt];
795 float *tmpbufF = new float[fNParamsTPCInt+1];
796 int *tmpbufI = new int[fNParamsTPCInt+1];
797 int *tmpbufI1 = new int[fNParamsTPCInt+1];
799 // count number of Z slices and number of R slices in each Z slice
800 for (int ip=0;ip<fNParamsTPCInt;ip++) {
801 if (ip==0 || (GetParamTPCInt(ip)->GetBoundMax(2)-GetParamTPCInt(ip-1)->GetBoundMax(2))>kSafety) { // new Z slice
802 tmpbufF[fNSegZTPCInt] = GetParamTPCInt(ip)->GetBoundMax(2); //
803 tmpbufI[fNSegZTPCInt] = 0;
804 tmpbufI1[fNSegZTPCInt++] = ip;
806 fSegRTPCInt[ip] = GetParamTPCInt(ip)->GetBoundMax(0); // upper R
807 tmpbufI[fNSegZTPCInt-1]++;
810 fSegZTPCInt = new Float_t[fNSegZTPCInt];
811 fSegZIdTPCInt = new Int_t[fNSegZTPCInt];
812 fNSegRTPCInt = new Int_t[fNSegZTPCInt];
813 for (int iz=0;iz<fNSegZTPCInt;iz++) {
814 fSegZTPCInt[iz] = tmpbufF[iz];
815 fNSegRTPCInt[iz] = tmpbufI[iz];
816 fSegZIdTPCInt[iz] = tmpbufI1[iz];
819 fMinZTPCInt = GetParamTPCInt(0)->GetBoundMin(2);
820 fMaxZTPCInt = GetParamTPCInt(fNParamsTPCInt-1)->GetBoundMax(2);
821 fMaxRTPCInt = GetParamTPCInt(fNParamsTPCInt-1)->GetBoundMax(0);
830 void AliMagWrapCheb::SaveData(const char* outfile) const
832 // writes coefficients data to output text file
833 TString strf = outfile;
834 gSystem->ExpandPathName(strf);
835 FILE* stream = fopen(strf,"w+");
837 // Sol part ---------------------------------------------------------
838 fprintf(stream,"# Set of Chebyshev parameterizations for ALICE magnetic field\nSTART %s\n",GetName());
839 fprintf(stream,"START SOLENOID\n#Number of pieces\n%d\n",fNParamsSol);
840 for (int ip=0;ip<fNParamsSol;ip++) GetParamSol(ip)->SaveData(stream);
841 fprintf(stream,"#\nEND SOLENOID\n");
843 // TPCInt part ---------------------------------------------------------
844 fprintf(stream,"# Set of Chebyshev parameterizations for ALICE magnetic field\nSTART %s\n",GetName());
845 fprintf(stream,"START TPCINT\n#Number of pieces\n%d\n",fNParamsTPCInt);
846 for (int ip=0;ip<fNParamsTPCInt;ip++) GetParamTPCInt(ip)->SaveData(stream);
847 fprintf(stream,"#\nEND TPCINT\n");
849 // Dip part ---------------------------------------------------------
850 fprintf(stream,"START DIPOLE\n#Number of pieces\n%d\n",fNParamsDip);
851 for (int ip=0;ip<fNParamsDip;ip++) GetParamDip(ip)->SaveData(stream);
852 fprintf(stream,"#\nEND DIPOLE\n");
854 fprintf(stream,"#\nEND %s\n",GetName());
860 Int_t AliMagWrapCheb::SegmentDipDimension(float** seg,const TObjArray* par,int npar, int dim,
861 float xmn,float xmx,float ymn,float ymx,float zmn,float zmx)
863 // find all boundaries in deimension dim for boxes in given region.
864 // if mn>mx for given projection the check is not done for it.
865 float *tmpC = new float[2*npar];
866 int *tmpInd = new int[2*npar];
868 for (int ip=0;ip<npar;ip++) {
869 AliCheb3D* cheb = (AliCheb3D*) par->At(ip);
870 if (xmn<xmx && (cheb->GetBoundMin(0)>(xmx+xmn)/2 || cheb->GetBoundMax(0)<(xmn+xmx)/2)) continue;
871 if (ymn<ymx && (cheb->GetBoundMin(1)>(ymx+ymn)/2 || cheb->GetBoundMax(1)<(ymn+ymx)/2)) continue;
872 if (zmn<zmx && (cheb->GetBoundMin(2)>(zmx+zmn)/2 || cheb->GetBoundMax(2)<(zmn+zmx)/2)) continue;
874 tmpC[nseg0++] = cheb->GetBoundMin(dim);
875 tmpC[nseg0++] = cheb->GetBoundMax(dim);
877 // range Dim's boundaries in increasing order
878 TMath::Sort(nseg0,tmpC,tmpInd,kFALSE);
879 // count number of really different Z's
882 for (int ip=0;ip<nseg0;ip++) {
883 if (TMath::Abs(cprev-tmpC[ tmpInd[ip] ])>1e-4) {
884 cprev = tmpC[ tmpInd[ip] ];
887 else tmpInd[ip] = -1; // supress redundant Z
890 *seg = new float[nseg]; // create final Z segmenations
892 for (int ip=0;ip<nseg0;ip++) if (tmpInd[ip]>=0) (*seg)[nseg++] = tmpC[ tmpInd[ip] ];