-/**************************************************************************
- * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
- * *
- * Author: The ALICE Off-line Project. *
- * Contributors are mentioned in the code where appropriate. *
- * *
- * Permission to use, copy, modify and distribute this software and its *
- * documentation strictly for non-commercial purposes is hereby granted *
- * without fee, provided that the above copyright notice appears in all *
- * copies and that both the copyright notice and this permission notice *
- * appear in the supporting documentation. The authors make no claims *
- * about the suitability of this software for any purpose. It is *
- * provided "as is" without express or implied warranty. *
- **************************************************************************/
-
-/* $Id$ */
-
///////////////////////////////////////////////////////////////////////////////////
// //
// Wrapper for the set of mag.field parameterizations by Chebyshev polinomials //
// For cylindrical coordinates/components: //
// FieldCyl(float* rphiz, float* brphiz) //
// //
-// For the moment only the solenoid part is parameterized in the volume defined //
-// by R<500, -550<Z<550 cm //
+// The solenoid part is parameterized in the volume R<500, -550<Z<550 cm //
// //
// The region R<423 cm, -343.3<Z<481.3 for 30kA and -343.3<Z<481.3 for 12kA //
// is parameterized using measured data while outside the Tosca calculation //
// is used (matched to data on the boundary of the measurements) //
// //
-// If the querried point is outside the validity region no the return values //
-// for the field components are set to 0. //
+// Two options are possible: //
+// 1) _BRING_TO_BOUNDARY_ is defined in the AliCheb3D: //
+// If the querried point is outside of the validity region then the field //
+// at the closest point on the fitted surface is returned. //
+// 2) _BRING_TO_BOUNDARY_ is not defined in the AliCheb3D: //
+// If the querried point is outside of the validity region the return //
+// value for the field components are set to 0. //
+// //
+// To obtain the field integral in the TPC region from given point to nearest //
+// cathod plane (+- 250 cm) use: //
+// GetTPCInt(float* xyz, float* bxyz); for Cartesian frame //
+// or //
+// GetTPCIntCyl(Float_t *rphiz, Float_t *b); for Cylindrical frame //
+// //
+// //
+// The units are kiloGauss and cm. //
// //
///////////////////////////////////////////////////////////////////////////////////
-#include "AliLog.h"
#include "AliMagFCheb.h"
ClassImp(AliMagFCheb)
-
-
//__________________________________________________________________________________________
-AliMagFCheb::AliMagFCheb() :
- TNamed(),
- fNParamsSol(0),
- fNSegZSol(0),
- fNParamsDip(0),
- fSegZSol(0),
- fSegRSol(0),
- fNSegRSol(0),
- fSegZIdSol(0),
- fMinZSol(0.),
- fMaxZSol(0.),
- fMaxRSol(0.),
- fParamsSol(0),
- fParamsDip(0)
-{
- Init0();
-}
+AliMagFCheb::AliMagFCheb() :
+ fNParamsSol(0),
+ fNSegZSol(0),
+ fNParamsTPCInt(0),
+ fNSegZTPCInt(0),
+ fNParamsDip(0),
+//
+ fNZSegDip(0),
+ fNYSegDip(0),
+ fNXSegDip(0),
+//
+ fSegZSol(0),
+ fSegRSol(0),
+//
+ fSegZTPCInt(0),
+ fSegRTPCInt(0),
+//
+ fSegZDip(0),
+ fSegYDip(0),
+ fSegXDip(0),
+//
+ fNSegRSol(0),
+ fSegZIdSol(0),
+//
+ fNSegRTPCInt(0),
+ fSegZIdTPCInt(0),
+//
+ fBegSegYDip(0),
+ fNSegYDip(0),
+ fBegSegXDip(0),
+ fNSegXDip(0),
+ fSegIDDip(0),
+//
+ fMinZSol(1e6),
+ fMaxZSol(-1e6),
+ fMaxRSol(-1e6),
+//
+ fMinZDip(1e6),
+ fMaxZDip(-1e6),
+//
+ fMinZTPCInt(1e6),
+ fMaxZTPCInt(-1e6),
+ fMaxRTPCInt(-1e6),
+//
+ fParamsSol(0),
+ fParamsDip(0),
+ fParamsTPCInt(0)
+//
+{}
-AliMagFCheb::AliMagFCheb(const char* inputFile) :
- TNamed("Field Map", inputFile),
- fNParamsSol(0),
- fNSegZSol(0),
- fNParamsDip(0),
- fSegZSol(0),
- fSegRSol(0),
- fNSegRSol(0),
- fSegZIdSol(0),
- fMinZSol(0.),
- fMaxZSol(0.),
- fMaxRSol(0.),
- fParamsSol(0),
- fParamsDip(0)
+//__________________________________________________________________________________________
+AliMagFCheb::AliMagFCheb(const AliMagFCheb& src) :
+ TNamed(src),
+ fNParamsSol(0),
+ fNSegZSol(0),
+ fNParamsTPCInt(0),
+ fNSegZTPCInt(0),
+ fNParamsDip(0),
+//
+ fNZSegDip(0),
+ fNYSegDip(0),
+ fNXSegDip(0),
+//
+ fSegZSol(0),
+ fSegRSol(0),
+//
+ fSegZTPCInt(0),
+ fSegRTPCInt(0),
+//
+ fSegZDip(0),
+ fSegYDip(0),
+ fSegXDip(0),
+//
+ fNSegRSol(0),
+ fSegZIdSol(0),
+//
+ fNSegRTPCInt(0),
+ fSegZIdTPCInt(0),
+//
+ fBegSegYDip(0),
+ fNSegYDip(0),
+ fBegSegXDip(0),
+ fNSegXDip(0),
+ fSegIDDip(0),
+//
+ fMinZSol(1e6),
+ fMaxZSol(-1e6),
+ fMaxRSol(-1e6),
+//
+ fMinZDip(1e6),
+ fMaxZDip(-1e6),
+//
+ fMinZTPCInt(1e6),
+ fMaxZTPCInt(-1e6),
+ fMaxRTPCInt(-1e6),
+//
+ fParamsSol(0),
+ fParamsDip(0),
+ fParamsTPCInt(0)
{
- Init0();
- LoadData(inputFile);
+ CopyFrom(src);
+ //
}
//__________________________________________________________________________________________
-AliMagFCheb::AliMagFCheb(const AliMagFCheb& src)
- : TNamed(src),
- fNParamsSol(src.fNParamsSol),
- fNSegZSol(src.fNSegZSol),
- fNParamsDip(src.fNParamsDip),
- fSegZSol(0),
- fSegRSol(0),
- fNSegRSol(0),
- fSegZIdSol(0),
- fMinZSol(src.fMinZSol),
- fMaxZSol(src.fMaxZSol),
- fMaxRSol(src.fMaxRSol),
- fParamsSol(0),
- fParamsDip(0)
-{
-// Copy constructor
- if (src.fSegZSol) {
- fSegZSol = new Float_t[fNSegZSol];
- for (int i=fNSegZSol;i--;) fSegZSol[i] = src.fSegZSol[i];
- }
- if (src.fSegRSol) {
- fSegRSol = new Float_t[fNParamsSol];
- for (int i=fNParamsSol;i--;) fSegRSol[i] = src.fSegRSol[i];
- }
- if (src.fNSegRSol) {
- fNSegRSol = new Int_t[fNSegZSol];
- for (int i=fNSegZSol;i--;) fNSegRSol[i] = src.fNSegRSol[i];
+void AliMagFCheb::CopyFrom(const AliMagFCheb& src)
+{
+ Clear();
+ SetName(src.GetName());
+ SetTitle(src.GetTitle());
+ fNParamsSol = src.fNParamsSol;
+ fNSegZSol = src.fNSegZSol;
+ fNParamsTPCInt = src.fNParamsTPCInt;
+ fNSegZTPCInt = src.fNSegZTPCInt;
+ fNParamsDip = src.fNParamsDip;
+ //
+ fNZSegDip = src.fNZSegDip;
+ fNYSegDip = src.fNYSegDip;
+ fNXSegDip = src.fNXSegDip;
+ //
+ fMinZSol = src.fMinZSol;
+ fMaxZSol = src.fMaxZSol;
+ fMaxRSol = src.fMaxRSol;
+ //
+ fMinZDip = src.fMinZDip;
+ fMaxZDip = src.fMaxZDip;
+ //
+ fMinZTPCInt = src.fMinZTPCInt;
+ fMaxZTPCInt = src.fMaxZTPCInt;
+ fMaxRTPCInt = src.fMaxRTPCInt;
+ //
+ if (src.fNParamsSol) {
+ memcpy(fSegZSol = new Float_t[fNSegZSol], src.fSegZSol, sizeof(Float_t)*fNSegZSol);
+ memcpy(fSegRSol = new Float_t[fNParamsSol], src.fSegRSol, sizeof(Float_t)*fNParamsSol);
+ memcpy(fNSegRSol = new Int_t[fNSegZSol], src.fNSegRSol, sizeof(Int_t)*fNSegZSol);
+ memcpy(fSegZIdSol= new Int_t[fNSegZSol], src.fSegZIdSol, sizeof(Int_t)*fNSegZSol);
+ fParamsSol = new TObjArray(fNParamsSol);
+ for (int i=0;i<fNParamsSol;i++) fParamsSol->AddAtAndExpand(new AliCheb3D(*src.GetParamSol(i)),i);
}
- if (src.fSegZIdSol) {
- fSegZIdSol = new Int_t[fNSegZSol];
- for (int i=fNSegZSol;i--;) fSegZIdSol[i] = src.fSegZIdSol[i];
- }
- if (src.fParamsSol) {
- fParamsSol = new TObjArray(fNParamsSol);
- for (int i=0;i<fNParamsSol;i++) {
- AliCheb3D* pr = src.GetParamSol(i);
- if (pr) fParamsSol->AddAtAndExpand(new AliCheb3D(*pr),i);
- }
+ //
+ if (src.fNParamsDip) {
+ memcpy(fSegZDip = new Float_t[fNZSegDip], src.fSegZDip, sizeof(Float_t)*fNZSegDip);
+ memcpy(fSegYDip = new Float_t[fNYSegDip], src.fSegYDip, sizeof(Float_t)*fNYSegDip);
+ memcpy(fSegXDip = new Float_t[fNXSegDip], src.fSegZDip, sizeof(Float_t)*fNXSegDip);
+ memcpy(fBegSegYDip= new Int_t[fNZSegDip], src.fBegSegYDip, sizeof(Int_t)*fNZSegDip);
+ memcpy(fNSegYDip = new Int_t[fNZSegDip], src.fNSegYDip, sizeof(Int_t)*fNZSegDip);
+ memcpy(fBegSegXDip= new Int_t[fNYSegDip], src.fBegSegXDip, sizeof(Int_t)*fNYSegDip);
+ memcpy(fNSegXDip = new Int_t[fNYSegDip], src.fNSegXDip, sizeof(Int_t)*fNYSegDip);
+ memcpy(fSegIDDip = new Int_t[fNXSegDip], src.fSegIDDip, sizeof(Int_t)*fNXSegDip);
+ fParamsDip = new TObjArray(fNParamsDip);
+ for (int i=0;i<fNParamsDip;i++) fParamsDip->AddAtAndExpand(new AliCheb3D(*src.GetParamDip(i)),i);
}
- if (src.fParamsDip) {
- fParamsDip = new TObjArray(fNParamsDip);
- for (int i=0;i<fNParamsDip;i++) {
- AliCheb3D* pr = src.GetParamDip(i);
- if (pr) fParamsDip->AddAtAndExpand(new AliCheb3D(*pr),i);
- }
+ //
+ if (src.fNParamsTPCInt) {
+ memcpy(fSegZTPCInt = new Float_t[fNSegZTPCInt], src.fSegZTPCInt, sizeof(Float_t)*fNSegZTPCInt);
+ memcpy(fSegRTPCInt = new Float_t[fNParamsTPCInt], src.fSegRTPCInt, sizeof(Float_t)*fNParamsTPCInt);
+ memcpy(fNSegRTPCInt = new Int_t[fNSegZTPCInt], src.fNSegRTPCInt, sizeof(Int_t)*fNSegZTPCInt);
+ memcpy(fSegZIdTPCInt= new Int_t[fNSegZTPCInt], src.fSegZIdTPCInt, sizeof(Int_t)*fNSegZTPCInt);
+ fParamsTPCInt = new TObjArray(fNParamsTPCInt);
+ for (int i=0;i<fNParamsTPCInt;i++) fParamsTPCInt->AddAtAndExpand(new AliCheb3D(*src.GetParamTPCInt(i)),i);
}
//
}
-
+//__________________________________________________________________________________________
AliMagFCheb& AliMagFCheb::operator=(const AliMagFCheb& rhs)
{
-// Assignment operator
- if (this != &rhs) {
- Clear();
- SetName(rhs.GetName());
- SetTitle(rhs.GetTitle());
- fNParamsSol = rhs.fNParamsSol;
- fNSegZSol = rhs.fNSegZSol;
- fMinZSol = rhs.fMinZSol;
- fMaxZSol = rhs.fMaxZSol;
- fMaxRSol = rhs.fMaxRSol;
- fNParamsDip = rhs.fNParamsDip;
- fSegZSol = fSegRSol = 0;
- fNSegRSol = fSegZIdSol = 0;
- fParamsSol = fParamsDip = 0;
- //
- if (rhs.fSegZSol) {
- fSegZSol = new Float_t[fNSegZSol];
- for (int i=fNSegZSol;i--;) fSegZSol[i] = rhs.fSegZSol[i];
- }
- if (rhs.fSegRSol) {
- fSegRSol = new Float_t[fNParamsSol];
- for (int i=fNParamsSol;i--;) fSegRSol[i] = rhs.fSegRSol[i];
- }
- if (rhs.fNSegRSol) {
- fNSegRSol = new Int_t[fNSegZSol];
- for (int i=fNSegZSol;i--;) fNSegRSol[i] = rhs.fNSegRSol[i];
- }
- if (rhs.fSegZIdSol) {
- fSegZIdSol = new Int_t[fNSegZSol];
- for (int i=fNSegZSol;i--;) fSegZIdSol[i] = rhs.fSegZIdSol[i];
- }
- if (rhs.fParamsSol) {
- fParamsSol = new TObjArray(fNParamsSol);
- for (int i=0;i<fNParamsSol;i++) {
- AliCheb3D* pr = rhs.GetParamSol(i);
- if (pr) fParamsSol->AddAtAndExpand(new AliCheb3D(*pr),i);
- }
- }
- if (rhs.fParamsDip) {
- fParamsDip = new TObjArray(fNParamsDip);
- for (int i=0;i<fNParamsDip;i++) {
- AliCheb3D* pr = rhs.GetParamDip(i);
- if (pr) fParamsDip->AddAtAndExpand(new AliCheb3D(*pr),i);
- }
- }
- }
- return *this;
- //
+ if (this != &rhs) {
+ Clear();
+ CopyFrom(rhs);
+ }
+ return *this;
+ //
}
-
//__________________________________________________________________________________________
-AliMagFCheb::~AliMagFCheb()
+void AliMagFCheb::Clear(Option_t *)
{
if (fNParamsSol) {
- delete fParamsSol;
+ delete fParamsSol;
delete[] fSegZSol;
delete[] fSegRSol;
delete[] fNSegRSol;
delete[] fSegZIdSol;
}
//
- // Dipole part ...
+ if (fNParamsTPCInt) {
+ delete fParamsTPCInt;
+ delete[] fSegZTPCInt;
+ delete[] fSegRTPCInt;
+ delete[] fNSegRTPCInt;
+ delete[] fSegZIdTPCInt;
+ }
+ //
if (fNParamsDip) {
- delete fParamsDip;
+ delete fParamsDip;
+ delete[] fSegZDip;
+ delete[] fSegYDip;
+ delete[] fSegXDip;
+ delete[] fBegSegYDip;
+ delete[] fNSegYDip;
+ delete[] fBegSegXDip;
+ delete[] fNSegXDip;
+ delete[] fSegIDDip;
}
+ fNParamsSol = fNParamsTPCInt = fNParamsDip = fNZSegDip = fNYSegDip = fNXSegDip = 0;
+ fNSegZSol = fNSegZTPCInt = 0;
+ fMinZSol = fMinZDip = fMinZTPCInt = 1e6;
+ fMaxZSol = fMaxZDip = fMaxZTPCInt = fMaxRSol = fMaxRTPCInt = -1e6;
+ //
}
//__________________________________________________________________________________________
-void AliMagFCheb::Init0()
+void AliMagFCheb::Field(Float_t *xyz, Float_t *b) const
{
- // Solenoid part
- fNParamsSol = 0;
- fNSegZSol = 0;
+ // compute field in cartesian coordinates. If point is outside of the parameterized region
+ // get it at closest valid point
+ static float rphiz[3];
//
- fSegZSol = 0;
- fSegRSol = 0;
+#ifndef _BRING_TO_BOUNDARY_ // exact matching to fitted volume is requested
+ if ( !(xyz[2]>=GetMinZSol()&&xyz[2]<=GetMaxZSol()) &&
+ !(xyz[2]>=GetMinZDip()&&xyz[2]<=GetMaxZDip()) ) {for (int i=3;i--;) b[i]=0; return;}
+#endif
//
- fNSegRSol = 0;
- fSegZIdSol = 0;
+ if (xyz[2]<fMaxZDip) { // dipole part?
+#ifndef _BRING_TO_BOUNDARY_
+ AliCheb3D* par = GetParamDip(FindDipSegment(xyz));
+ if (par->IsInside(xyz)) {par->Eval(xyz,b); return;}
+ for (int i=3;i--;) b[i]=0; return;
+#else
+ GetParamDip(FindDipSegment(xyz))->Eval(xyz,b); return;
+#endif
+ }
+ //
+ // Sol region: convert coordinates to cyl system
+ CartToCyl(xyz,rphiz);
+#ifndef _BRING_TO_BOUNDARY_
+ if (rphiz[0]>GetMaxRSol()) {for (int i=3;i--;) b[i]=0; return;}
+#endif
+ //
+ FieldCylSol(rphiz,b);
//
- fMinZSol = fMaxZSol = fMaxRSol = fMaxRSol = 0;
- fParamsSol = 0;
+ // convert field to cartesian system
+ CylToCartCylB(rphiz, b,b);
//
- // Dipole part ...
- fNParamsDip = 0;
- fParamsDip = 0;
+}
+
+//__________________________________________________________________________________________
+void AliMagFCheb::GetTPCInt(Float_t *xyz, Float_t *b) const
+{
+ // compute TPC region field integral in cartesian coordinates.
+ // If point is outside of the parameterized region get it at closeset valid point
+ static float rphiz[3];
+ //
+ // TPCInt region
+ // convert coordinates to cyl system
+ CartToCyl(xyz,rphiz);
+#ifndef _BRING_TO_BOUNDARY_
+ if ( (rphiz[2]>GetMaxZTPCInt()||rphiz[2]<GetMinZTPCInt()) ||
+ rphiz[0]>GetMaxRTPCInt()) {for (int i=3;i--;) b[i]=0; return;}
+#endif
+ //
+ GetTPCIntCyl(rphiz,b);
+ //
+ // convert field to cartesian system
+ CylToCartCylB(rphiz, b,b);
+ //
+}
+
+//__________________________________________________________________________________________
+void AliMagFCheb::FieldCylSol(Float_t *rphiz, Float_t *b) const
+{
+ // compute Solenoid field in Cylindircal coordinates
+ // note: if the point is outside the volume get the field in closest parameterized point
+ float &r = rphiz[0];
+ float &z = rphiz[2];
+ int SolZId = 0;
+ while (z>fSegZSol[SolZId] && SolZId<fNSegZSol-1) ++SolZId; // find Z segment
+ int SolRId = fSegZIdSol[SolZId]; // first R segment for this Z
+ int SolRMax = SolRId + fNSegRSol[SolZId];
+ while (r>fSegRSol[SolRId] && SolRId<SolRMax-1) ++SolRId; // find R segment
+ GetParamSol( SolRId )->Eval(rphiz,b);
+ //
+}
+
+//__________________________________________________________________________________________
+void AliMagFCheb::GetTPCIntCyl(Float_t *rphiz, Float_t *b) const
+{
+ // compute field integral in TPC region in Cylindircal coordinates
+ // note: the check for the point being inside the parameterized region is done outside
+ float &r = rphiz[0];
+ float &z = rphiz[2];
+ int TPCIntZId = 0;
+ while (z>fSegZTPCInt[TPCIntZId] && TPCIntZId<fNSegZTPCInt) ++TPCIntZId; // find Z segment
+ int TPCIntRId = fSegZIdTPCInt[TPCIntZId]; // first R segment for this Z
+ int TPCIntRIdMax = TPCIntRId + fNSegRTPCInt[TPCIntZId];
+ while (r>fSegRTPCInt[TPCIntRId] && TPCIntRId<TPCIntRIdMax) ++TPCIntRId; // find R segment
+ GetParamTPCInt( TPCIntRId )->Eval(rphiz,b);
//
}
+
+//__________________________________________________________________________________________
+void AliMagFCheb::Print(Option_t *) const
+{
+ printf("Alice magnetic field parameterized by Chebyshev polynomials\n");
+ printf("Segmentation for Solenoid (%+.2f<Z<%+.2f cm | R<%.2f cm)\n",fMinZSol,fMaxZSol,fMaxRSol);
+ //
+ if (fParamsSol) fParamsSol->Print();
+ /*
+ for (int iz=0;iz<fNSegZSol;iz++) {
+ AliCheb3D* param = GetParamSol( fSegZIdSol[iz] );
+ printf("*** Z Segment %2d (%+7.2f<Z<%+7.2f)\t***\n",iz,param->GetBoundMin(2),param->GetBoundMax(2));
+ for (int ir=0;ir<fNSegRSol[iz];ir++) {
+ param = GetParamSol( fSegZIdSol[iz]+ir );
+ printf(" R Segment %2d (%+7.2f<R<%+7.2f, Precision: %.1e) (ID=%2d)\n",ir, param->GetBoundMin(0),
+ param->GetBoundMax(0),param->GetPrecision(),fSegZIdSol[iz]+ir);
+ }
+ }
+ */
+ //
+ printf("Segmentation for TPC field integral (%+.2f<Z<%+.2f cm | R<%.2f cm)\n",fMinZTPCInt,fMaxZTPCInt,fMaxRTPCInt);
+ //
+ if (fParamsTPCInt) fParamsTPCInt->Print();
+ /*
+ for (int iz=0;iz<fNSegZTPCInt;iz++) {
+ AliCheb3D* param = GetParamTPCInt( fSegZIdTPCInt[iz] );
+ printf("*** Z Segment %2d (%+7.2f<Z<%+7.2f)\t***\n",iz,param->GetBoundMin(2),param->GetBoundMax(2));
+ for (int ir=0;ir<fNSegRTPCInt[iz];ir++) {
+ param = GetParamTPCInt( fSegZIdTPCInt[iz]+ir );
+ printf(" R Segment %2d (%+7.2f<R<%+7.2f, Precision: %.1e) (ID=%2d)\n",ir, param->GetBoundMin(0),
+ param->GetBoundMax(0),param->GetPrecision(),fSegZIdTPCInt[iz]+ir);
+ }
+ }
+ */
+ //
+ printf("Segmentation for Dipole (%+.2f<Z<%+.2f cm)\n",fMinZDip,fMaxZDip);
+ if (fParamsDip) fParamsDip->Print();
+ //
+
+
+}
+#ifdef _INC_CREATION_ALICHEB3D_
+//_______________________________________________
+void AliMagFCheb::LoadData(const char* inpfile)
+{
+ // read coefficients data from the text file
+ //
+ TString strf = inpfile;
+ gSystem->ExpandPathName(strf);
+ FILE* stream = fopen(strf,"r");
+ if (!stream) {
+ printf("Did not find input file %s\n",strf.Data());
+ return;
+ }
+ //
+ TString buffs;
+ AliCheb3DCalc::ReadLine(buffs,stream);
+ if (!buffs.BeginsWith("START")) {
+ Error("LoadData","Expected: \"START <name>\", found \"%s\"\nStop\n",buffs.Data());
+ exit(1);
+ }
+ if (buffs.First(' ')>0) SetName(buffs.Data()+buffs.First(' ')+1);
+ //
+ // Solenoid part -----------------------------------------------------------
+ AliCheb3DCalc::ReadLine(buffs,stream);
+ if (!buffs.BeginsWith("START SOLENOID")) {
+ Error("LoadData","Expected: \"START SOLENOID\", found \"%s\"\nStop\n",buffs.Data());
+ exit(1);
+ }
+ AliCheb3DCalc::ReadLine(buffs,stream); // nparam
+ int nparSol = buffs.Atoi();
+ //
+ for (int ip=0;ip<nparSol;ip++) {
+ AliCheb3D* cheb = new AliCheb3D();
+ cheb->LoadData(stream);
+ AddParamSol(cheb);
+ }
+ //
+ AliCheb3DCalc::ReadLine(buffs,stream);
+ if (!buffs.BeginsWith("END SOLENOID")) {
+ Error("LoadData","Expected \"END SOLENOID\", found \"%s\"\nStop\n",buffs.Data());
+ exit(1);
+ }
+ //
+ // TPCInt part -----------------------------------------------------------
+ AliCheb3DCalc::ReadLine(buffs,stream);
+ if (!buffs.BeginsWith("START TPCINT")) {
+ Error("LoadData","Expected: \"START TPCINT\", found \"%s\"\nStop\n",buffs.Data());
+ exit(1);
+ }
+ AliCheb3DCalc::ReadLine(buffs,stream); // nparam
+ int nparTPCInt = buffs.Atoi();
+ //
+ for (int ip=0;ip<nparTPCInt;ip++) {
+ AliCheb3D* cheb = new AliCheb3D();
+ cheb->LoadData(stream);
+ AddParamTPCInt(cheb);
+ }
+ //
+ AliCheb3DCalc::ReadLine(buffs,stream);
+ if (!buffs.BeginsWith("END TPCINT")) {
+ Error("LoadData","Expected \"END TPCINT\", found \"%s\"\nStop\n",buffs.Data());
+ exit(1);
+ }
+ //
+ // Dipole part -----------------------------------------------------------
+ AliCheb3DCalc::ReadLine(buffs,stream);
+ if (!buffs.BeginsWith("START DIPOLE")) {
+ Error("LoadData","Expected: \"START DIPOLE\", found \"%s\"\nStop\n",buffs.Data());
+ exit(1);
+ }
+ AliCheb3DCalc::ReadLine(buffs,stream); // nparam
+ int nparDip = buffs.Atoi();
+ //
+ for (int ip=0;ip<nparDip;ip++) {
+ AliCheb3D* cheb = new AliCheb3D();
+ cheb->LoadData(stream);
+ AddParamDip(cheb);
+ }
+ //
+ AliCheb3DCalc::ReadLine(buffs,stream);
+ if (!buffs.BeginsWith("END DIPOLE")) {
+ Error("LoadData","Expected \"END DIPOLE\", found \"%s\"\nStop\n",GetName(),buffs.Data());
+ exit(1);
+ }
+ //
+ AliCheb3DCalc::ReadLine(buffs,stream);
+ if (!buffs.BeginsWith("END") || !buffs.Contains(GetName())) {
+ Error("LoadData","Expected: \"END %s\", found \"%s\"\nStop\n",GetName(),buffs.Data());
+ exit(1);
+ }
+ //
+ // ---------------------------------------------------------------------------
+ fclose(stream);
+ BuildTableSol();
+ BuildTableTPCInt();
+ BuildTableDip();
+ printf("Loaded magnetic field \"%s\" from %s\n",GetName(),strf.Data());
+ //
+}
+#endif
+
+//_________________________________________________________________________
+Int_t AliMagFCheb::FindDipSegment(float *xyz) const
+{
+ // find the segment containing point xyz. If it is outside find the closest segment
+ int xid,yid,zid = TMath::BinarySearch(fNZSegDip,fSegZDip,xyz[2]); // find zsegment
+ int ysegBeg = fBegSegYDip[zid];
+ //
+ for (yid=0;yid<fNSegYDip[zid];yid++) if (xyz[1]<fSegYDip[ysegBeg+yid]) break;
+ if ( --yid < 0 ) yid = 0;
+ yid += ysegBeg;
+ //
+ int xsegBeg = fBegSegXDip[yid];
+ for (xid=0;xid<fNSegXDip[yid];xid++) if (xyz[0]<fSegXDip[xsegBeg+xid]) break;
+ if ( --xid < 0) xid = 0;
+ xid += xsegBeg;
+ //
+ return fSegIDDip[xid];
+}
+
+//_______________________________________________
+#ifdef _INC_CREATION_ALICHEB3D_
+
+
+//__________________________________________________________________________________________
+AliMagFCheb::AliMagFCheb(const char* inputFile) :
+ fNParamsSol(0),
+ fNSegZSol(0),
+ fNParamsTPCInt(0),
+ fNSegZTPCInt(0),
+ fNParamsDip(0),
+//
+ fNZSegDip(0),
+ fNYSegDip(0),
+ fNXSegDip(0),
+//
+ fSegZSol(0),
+ fSegRSol(0),
+//
+ fSegZTPCInt(0),
+ fSegRTPCInt(0),
+//
+ fSegZDip(0),
+ fSegYDip(0),
+ fSegXDip(0),
+//
+ fNSegRSol(0),
+ fSegZIdSol(0),
+//
+ fNSegRTPCInt(0),
+ fSegZIdTPCInt(0),
+//
+ fBegSegYDip(0),
+ fNSegYDip(0),
+ fBegSegXDip(0),
+ fNSegXDip(0),
+ fSegIDDip(0),
+//
+ fMinZSol(0),
+ fMaxZSol(0),
+ fMaxRSol(0),
+//
+ fMinZDip(0),
+ fMaxZDip(0),
+//
+ fMinZTPCInt(0),
+ fMaxZTPCInt(0),
+ fMaxRTPCInt(0),
+//
+ fParamsSol(0),
+ fParamsDip(0),
+ fParamsTPCInt(0)
+//
+//
+{
+ LoadData(inputFile);
+}
+
//__________________________________________________________________________________________
void AliMagFCheb::AddParamSol(AliCheb3D* param)
{
//
}
+//__________________________________________________________________________________________
+void AliMagFCheb::AddParamTPCInt(AliCheb3D* param)
+{
+ // adds new parameterization piece for TPCInt
+ // NOTE: pieces must be added strictly in increasing R then increasing Z order
+ //
+ if (!fParamsTPCInt) fParamsTPCInt = new TObjArray();
+ fParamsTPCInt->Add(param);
+ fNParamsTPCInt++;
+ //
+}
+
//__________________________________________________________________________________________
void AliMagFCheb::AddParamDip(AliCheb3D* param)
{
//
}
+//__________________________________________________________________________________________
+void AliMagFCheb::ResetTPCInt()
+{
+ // clean TPC field integral (used for update)
+ if (!fNParamsTPCInt) return;
+ delete fParamsTPCInt;
+ delete[] fSegZTPCInt;
+ delete[] fSegRTPCInt;
+ delete[] fNSegRTPCInt;
+ delete[] fSegZIdTPCInt;
+ //
+ fNParamsTPCInt = 0;
+ fNSegZTPCInt = 0;
+ fSegZTPCInt = 0;
+ fSegRTPCInt = 0;
+ fNSegRTPCInt = 0;
+ fSegZIdTPCInt = 0;
+ fMinZTPCInt = 0;
+ fMaxZTPCInt = 0;
+ fMaxRTPCInt = 0;
+ fParamsTPCInt = 0;
+ //
+}
+
+//__________________________________________________
+void AliMagFCheb::BuildTableDip()
+{
+ //
+ TArrayF segY,segX;
+ TArrayI begSegYDip,begSegXDip;
+ TArrayI nsegYDip,nsegXDip;
+ TArrayI segID;
+ float *tmpSegZ,*tmpSegY,*tmpSegX;
+ //
+ // create segmentation in Z
+ fNZSegDip = SegmentDipDimension(&tmpSegZ, fParamsDip, fNParamsDip, 2, 1,-1, 1,-1, 1,-1) - 1;
+ fNYSegDip = 0;
+ fNXSegDip = 0;
+ //
+ // for each Z slice create segmentation in Y
+ begSegYDip.Set(fNZSegDip);
+ nsegYDip.Set(fNZSegDip);
+ float xyz[3];
+ for (int iz=0;iz<fNZSegDip;iz++) {
+ printf("\nZSegment#%d %+e : %+e\n",iz,tmpSegZ[iz],tmpSegZ[iz+1]);
+ int ny = SegmentDipDimension(&tmpSegY, fParamsDip, fNParamsDip, 1,
+ 1,-1, 1,-1, tmpSegZ[iz],tmpSegZ[iz+1]) - 1;
+ segY.Set(ny + fNYSegDip);
+ for (int iy=0;iy<ny;iy++) segY[fNYSegDip+iy] = tmpSegY[iy];
+ begSegYDip[iz] = fNYSegDip;
+ nsegYDip[iz] = ny;
+ printf(" Found %d YSegments, to start from %d\n",ny, begSegYDip[iz]);
+ //
+ // for each slice in Z and Y create segmentation in X
+ begSegXDip.Set(fNYSegDip+ny);
+ nsegXDip.Set(fNYSegDip+ny);
+ xyz[2] = (tmpSegZ[iz]+tmpSegZ[iz+1])/2.; // mean Z of this segment
+ //
+ for (int iy=0;iy<ny;iy++) {
+ int isg = fNYSegDip+iy;
+ printf("\n YSegment#%d %+e : %+e\n",iy, tmpSegY[iy],tmpSegY[iy+1]);
+ int nx = SegmentDipDimension(&tmpSegX, fParamsDip, fNParamsDip, 0,
+ 1,-1, tmpSegY[iy],tmpSegY[iy+1], tmpSegZ[iz],tmpSegZ[iz+1]) - 1;
+ //
+ segX.Set(nx + fNXSegDip);
+ for (int ix=0;ix<nx;ix++) segX[fNXSegDip+ix] = tmpSegX[ix];
+ begSegXDip[isg] = fNXSegDip;
+ nsegXDip[isg] = nx;
+ printf(" Found %d XSegments, to start from %d\n",nx, begSegXDip[isg]);
+ //
+ segID.Set(fNXSegDip+nx);
+ //
+ // find corresponding params
+ xyz[1] = (tmpSegY[iy]+tmpSegY[iy+1])/2.; // mean Y of this segment
+ //
+ for (int ix=0;ix<nx;ix++) {
+ xyz[0] = (tmpSegX[ix]+tmpSegX[ix+1])/2.; // mean X of this segment
+ for (int ipar=0;ipar<fNParamsDip;ipar++) {
+ AliCheb3D* cheb = (AliCheb3D*) fParamsDip->At(ipar);
+ if (!cheb->IsInside(xyz)) continue;
+ segID[fNXSegDip+ix] = ipar;
+ break;
+ }
+ }
+ fNXSegDip += nx;
+ //
+ delete[] tmpSegX;
+ }
+ delete[] tmpSegY;
+ fNYSegDip += ny;
+ }
+ //
+ fMinZDip = tmpSegZ[0];
+ fMaxZDip = tmpSegZ[fNZSegDip];
+ fSegZDip = new Float_t[fNZSegDip];
+ for (int i=fNZSegDip;i--;) fSegZDip[i] = tmpSegZ[i];
+ delete[] tmpSegZ;
+ //
+ fSegYDip = new Float_t[fNYSegDip];
+ fSegXDip = new Float_t[fNXSegDip];
+ fBegSegYDip = new Int_t[fNZSegDip];
+ fNSegYDip = new Int_t[fNZSegDip];
+ fBegSegXDip = new Int_t[fNYSegDip];
+ fNSegXDip = new Int_t[fNYSegDip];
+ fSegIDDip = new Int_t[fNXSegDip];
+ //
+ for (int i=fNYSegDip;i--;) fSegYDip[i] = segY[i];
+ for (int i=fNXSegDip;i--;) fSegXDip[i] = segX[i];
+ for (int i=fNZSegDip;i--;) {fBegSegYDip[i] = begSegYDip[i]; fNSegYDip[i] = nsegYDip[i];}
+ for (int i=fNYSegDip;i--;) {fBegSegXDip[i] = begSegXDip[i]; fNSegXDip[i] = nsegXDip[i];}
+ for (int i=fNXSegDip;i--;) {fSegIDDip[i] = segID[i];}
+ //
+}
+
//__________________________________________________________________________________________
void AliMagFCheb::BuildTableSol()
{
//
const float kSafety=0.001;
//
+ if (fNParamsSol<1) return;
fSegRSol = new Float_t[fNParamsSol];
float *tmpbufF = new float[fNParamsSol+1];
int *tmpbufI = new int[fNParamsSol+1];
}
//__________________________________________________________________________________________
-void AliMagFCheb::Field(Float_t *xyz, Float_t *b) const
+void AliMagFCheb::BuildTableTPCInt()
{
- // compute field in cartesian coordinates
- float rphiz[3];
- if (xyz[2]>GetMaxZSol() || xyz[2]<GetMinZSol()) {for (int i=3;i--;) b[i]=0; return;}
+ // build the indexes for each parameterization of TPC field integral
//
- // Sol region
- // convert coordinates to cyl system
- rphiz[0] = TMath::Sqrt(xyz[0]*xyz[0]+xyz[1]*xyz[1]);
- rphiz[1] = TMath::ATan2(xyz[1],xyz[0]);
- rphiz[2] = xyz[2];
- if (rphiz[0]>GetMaxRSol()) {for (int i=3;i--;) b[i]=0; return;}
+ const float kSafety=0.001;
//
- FieldCylSol(rphiz,b);
+ if (fNParamsTPCInt<1) return;
+ fSegRTPCInt = new Float_t[fNParamsTPCInt];
+ float *tmpbufF = new float[fNParamsTPCInt+1];
+ int *tmpbufI = new int[fNParamsTPCInt+1];
+ int *tmpbufI1 = new int[fNParamsTPCInt+1];
//
- // convert field to cartesian system
- float btr = TMath::Sqrt(b[0]*b[0]+b[1]*b[1]);
- float psiPLUSphi = rphiz[1] + TMath::ATan2(b[1],b[0]);
- b[0] = btr*TMath::Cos(psiPLUSphi);
- b[1] = btr*TMath::Sin(psiPLUSphi);
+ // count number of Z slices and number of R slices in each Z slice
+ for (int ip=0;ip<fNParamsTPCInt;ip++) {
+ if (ip==0 || (GetParamTPCInt(ip)->GetBoundMax(2)-GetParamTPCInt(ip-1)->GetBoundMax(2))>kSafety) { // new Z slice
+ tmpbufF[fNSegZTPCInt] = GetParamTPCInt(ip)->GetBoundMax(2); //
+ tmpbufI[fNSegZTPCInt] = 0;
+ tmpbufI1[fNSegZTPCInt++] = ip;
+ }
+ fSegRTPCInt[ip] = GetParamTPCInt(ip)->GetBoundMax(0); // upper R
+ tmpbufI[fNSegZTPCInt-1]++;
+ }
//
-}
-
-//__________________________________________________________________________________________
-void AliMagFCheb::FieldCylSol(Float_t *rphiz, Float_t *b) const
-{
- // compute Solenoid field in Cylindircal coordinates
- // note: the check for the point being inside the parameterized region is done outside
- float &r = rphiz[0];
- float &z = rphiz[2];
- int SolZId = 0;
- while (z>fSegZSol[SolZId]) ++SolZId; // find Z segment
- int SolRId = fSegZIdSol[SolZId]; // first R segment for this Z
- while (r>fSegRSol[SolRId]) ++SolRId; // find R segment
- GetParamSol( SolRId )->Eval(rphiz,b);
+ fSegZTPCInt = new Float_t[fNSegZTPCInt];
+ fSegZIdTPCInt = new Int_t[fNSegZTPCInt];
+ fNSegRTPCInt = new Int_t[fNSegZTPCInt];
+ for (int iz=0;iz<fNSegZTPCInt;iz++) {
+ fSegZTPCInt[iz] = tmpbufF[iz];
+ fNSegRTPCInt[iz] = tmpbufI[iz];
+ fSegZIdTPCInt[iz] = tmpbufI1[iz];
+ }
+ //
+ fMinZTPCInt = GetParamTPCInt(0)->GetBoundMin(2);
+ fMaxZTPCInt = GetParamTPCInt(fNParamsTPCInt-1)->GetBoundMax(2);
+ fMaxRTPCInt = GetParamTPCInt(fNParamsTPCInt-1)->GetBoundMax(0);
+ //
+ delete[] tmpbufF;
+ delete[] tmpbufI;
+ delete[] tmpbufI1;
//
-}
-
-//__________________________________________________________________________________________
-void AliMagFCheb::Print(Option_t *) const
-{
- printf("Alice magnetic field parameterized by Chebyshev polynomials\n");
- printf("Segmentation for Solenoid (%+.2f<Z<%+.2f cm | R<%.2f cm)\n",fMinZSol,fMaxZSol,fMaxRSol);
//
- for (int iz=0;iz<fNSegZSol;iz++) {
- AliCheb3D* param = GetParamSol( fSegZIdSol[iz] );
- printf("*** Z Segment %2d (%+7.2f<Z<%+7.2f)\t***\n",iz,param->GetBoundMin(2),param->GetBoundMax(2));
- for (int ir=0;ir<fNSegRSol[iz];ir++) {
- param = GetParamSol( fSegZIdSol[iz]+ir );
- printf(" R Segment %2d (%+7.2f<R<%+7.2f, Precision: %.1e) (ID=%2d)\n",ir, param->GetBoundMin(0),param->GetBoundMax(0),
- param->GetPrecision(),fSegZIdSol[iz]+ir);
- }
- }
}
-//_______________________________________________
-#ifdef _INC_CREATION_ALICHEB3D_
void AliMagFCheb::SaveData(const char* outfile) const
{
// writes coefficients data to output text file
gSystem->ExpandPathName(strf);
FILE* stream = fopen(strf,"w+");
//
- // Sol part
+ // Sol part ---------------------------------------------------------
fprintf(stream,"# Set of Chebyshev parameterizations for ALICE magnetic field\nSTART %s\n",GetName());
fprintf(stream,"START SOLENOID\n#Number of pieces\n%d\n",fNParamsSol);
for (int ip=0;ip<fNParamsSol;ip++) GetParamSol(ip)->SaveData(stream);
fprintf(stream,"#\nEND SOLENOID\n");
//
- // Dip part
+ // TPCInt part ---------------------------------------------------------
+ fprintf(stream,"# Set of Chebyshev parameterizations for ALICE magnetic field\nSTART %s\n",GetName());
+ fprintf(stream,"START TPCINT\n#Number of pieces\n%d\n",fNParamsTPCInt);
+ for (int ip=0;ip<fNParamsTPCInt;ip++) GetParamTPCInt(ip)->SaveData(stream);
+ fprintf(stream,"#\nEND TPCINT\n");
+ //
+ // Dip part ---------------------------------------------------------
fprintf(stream,"START DIPOLE\n#Number of pieces\n%d\n",fNParamsDip);
for (int ip=0;ip<fNParamsDip;ip++) GetParamDip(ip)->SaveData(stream);
fprintf(stream,"#\nEND DIPOLE\n");
fclose(stream);
//
}
-#endif
-//_______________________________________________
-void AliMagFCheb::LoadData(const char* inpfile)
+Int_t AliMagFCheb::SegmentDipDimension(float** seg,const TObjArray* par,int npar, int dim,
+ float xmn,float xmx,float ymn,float ymx,float zmn,float zmx)
{
- // read coefficients data from the text file
- //
- TString strf = inpfile;
- gSystem->ExpandPathName(strf);
- FILE* stream = fopen(strf,"r");
- if (!stream) {
- printf("Did not find input file %s\n",strf.Data());
- return;
- }
- //
- TString buffs;
- AliCheb3DCalc::ReadLine(buffs,stream);
- if (!buffs.BeginsWith("START")) {Error("LoadData","Expected: \"START <name>\", found \"%s\"\nStop\n",buffs.Data());exit(1);}
- if (buffs.First(' ')>0) SetName(buffs.Data()+buffs.First(' ')+1);
- //
- // Solenoid part
- AliCheb3DCalc::ReadLine(buffs,stream);
- if (!buffs.BeginsWith("START SOLENOID")) {Error("LoadData","Expected: \"START SOLENOID\", found \"%s\"\nStop\n",buffs.Data());exit(1);}
- AliCheb3DCalc::ReadLine(buffs,stream); // nparam
- int nparSol = buffs.Atoi();
- //
- for (int ip=0;ip<nparSol;ip++) {
- AliCheb3D* cheb = new AliCheb3D();
- cheb->LoadData(stream);
- AddParamSol(cheb);
+ // find all boundaries in deimension dim for boxes in given region.
+ // if mn>mx for given projection the check is not done for it.
+ float *tmpC = new float[2*npar];
+ int *tmpInd = new int[2*npar];
+ int nseg0 = 0;
+ for (int ip=0;ip<npar;ip++) {
+ AliCheb3D* cheb = (AliCheb3D*) par->At(ip);
+ if (xmn<xmx && (cheb->GetBoundMin(0)>(xmx+xmn)/2 || cheb->GetBoundMax(0)<(xmn+xmx)/2)) continue;
+ if (ymn<ymx && (cheb->GetBoundMin(1)>(ymx+ymn)/2 || cheb->GetBoundMax(1)<(ymn+ymx)/2)) continue;
+ if (zmn<zmx && (cheb->GetBoundMin(2)>(zmx+zmn)/2 || cheb->GetBoundMax(2)<(zmn+zmx)/2)) continue;
+ //
+ tmpC[nseg0++] = cheb->GetBoundMin(dim);
+ tmpC[nseg0++] = cheb->GetBoundMax(dim);
}
- //
- AliCheb3DCalc::ReadLine(buffs,stream);
- if (!buffs.BeginsWith("END SOLENOID")) {Error("LoadData","Expected \"END SOLENOID\", found \"%s\"\nStop\n",buffs.Data());exit(1);}
- //
- // Dipole part
- AliCheb3DCalc::ReadLine(buffs,stream);
- if (!buffs.BeginsWith("START DIPOLE")) {Error("LoadData","Expected: \"START DIPOLE\", found \"%s\"\nStop\n",buffs.Data());exit(1);}
- AliCheb3DCalc::ReadLine(buffs,stream); // nparam
- int nparDip = buffs.Atoi();
- //
- for (int ip=0;ip<nparDip;ip++) {
- AliCheb3D* cheb = new AliCheb3D();
- cheb->LoadData(stream);
- AddParamDip(cheb);
+ // range Dim's boundaries in increasing order
+ TMath::Sort(nseg0,tmpC,tmpInd,kFALSE);
+ // count number of really different Z's
+ int nseg = 0;
+ float cprev = -1e6;
+ for (int ip=0;ip<nseg0;ip++) {
+ if (TMath::Abs(cprev-tmpC[ tmpInd[ip] ])>1e-4) {
+ cprev = tmpC[ tmpInd[ip] ];
+ nseg++;
+ }
+ else tmpInd[ip] = -1; // supress redundant Z
}
- //
- AliCheb3DCalc::ReadLine(buffs,stream);
- if (!buffs.BeginsWith("END DIPOLE")) {Error("LoadData","Expected \"END DIPOLE\", found \"%s\"\nStop\n",GetName(),buffs.Data());exit(1);}
- //
- AliCheb3DCalc::ReadLine(buffs,stream);
- if (!buffs.BeginsWith("END") || !buffs.Contains(GetName())) {Error("LoadData","Expected: \"END %s\", found \"%s\"\nStop\n",GetName(),buffs.Data());exit(1);}
- //
- fclose(stream);
- BuildTableSol();
- // BuildDipTable();
- printf("Loaded magnetic field \"%s\" from %s\n",GetName(),strf.Data());
- //
+ //
+ *seg = new float[nseg]; // create final Z segmenations
+ nseg = 0;
+ for (int ip=0;ip<nseg0;ip++) if (tmpInd[ip]>=0) (*seg)[nseg++] = tmpC[ tmpInd[ip] ];
+ //
+ delete[] tmpC;
+ delete[] tmpInd;
+ return nseg;
}
+
+#endif
+
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff