Wrapper for AliMagFCheb: set of magnetic field data + Tosca parameterization by Cheby...
[u/mrichter/AliRoot.git] / STEER / AliMagWrapCheb.cxx
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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
16
17#include <TClass.h>
18#include <TFile.h>
19#include <TSystem.h>
20
21#include "AliMagWrapCheb.h"
22#include "AliLog.h"
23
24ClassImp(AliMagWrapCheb)
25
26
27//_______________________________________________________________________
28AliMagWrapCheb::AliMagWrapCheb():
29 AliMagF(),
30 fMeasuredMap(0)
31{
32 // Default constructor
33 //
34}
35
36//_______________________________________________________________________
37AliMagWrapCheb::AliMagWrapCheb(const char *name, const char *title, Int_t integ,
38 Float_t factor, Float_t fmax, Int_t map,
39 Bool_t dipoleON,const char* path):
40 AliMagF(name, title, integ, factor, fmax),
41 fMeasuredMap(0)
42{
43 //
44 fMap = map;
45 char* fname = gSystem->ExpandPathName(path);
46 TFile* file = TFile::Open(fname);
47 if (!file) {
48 AliError(Form("Failed to open magnetic field data file %s\n",fname));
49 return;
50 }
51 const char* parname = 0;
52 if (fMap == k2kG) parname = dipoleON ? "Sol12_Dip6_Hole":"Sol12_Dip0_Hole";
53 else if (fMap == k5kG) parname = dipoleON ? "Sol30_Dip6_Hole":"Sol30_Dip0_Hole";
54 else {
55 AliError(Form("Unknown field identifier %d is requested\n",fMap));
56 return;
57 }
58 //
59 fMeasuredMap = dynamic_cast<AliMagFCheb*>(file->Get(parname));
60 if (!fMeasuredMap) {
61 AliError(Form("Did not find field %s in %s\n",parname,fname));
62 return;
63 }
64 file->Close();
65 delete file;
66}
67
68
69//_______________________________________________________________________
70AliMagWrapCheb::AliMagWrapCheb(const AliMagWrapCheb &src):
71 AliMagF(src),
72 fMeasuredMap(0)
73{
74 if (src.fMeasuredMap) fMeasuredMap = new AliMagFCheb(*src.fMeasuredMap);
75}
76
77//_______________________________________________________________________
78AliMagWrapCheb::~AliMagWrapCheb()
79{
80 delete fMeasuredMap;
81}
82
83//_______________________________________________________________________
84void AliMagWrapCheb::GetTPCInt(Float_t *xyz, Float_t *b) const
85{
86 // Method to calculate the integral of magnetic integral from xyz to nearest cathode plane
87 //
88 if (fMeasuredMap) fMeasuredMap->GetTPCInt(xyz,b);
89 for (int i=3;i--;) b[i] *= fFactor;
90}
91
92//_______________________________________________________________________
93void AliMagWrapCheb::GetTPCIntCyl(Float_t *rphiz, Float_t *b) const
94{
95 // Method to calculate the integral of magnetic integral from point to nearest cathode plane
96 // in cylindrical coordiates ( -pi<phi<pi convention )
97 if (fMeasuredMap) fMeasuredMap->GetTPCIntCyl(rphiz,b);
98 for (int i=3;i--;) b[i] *= fFactor;
99}
100
101//_______________________________________________________________________
102void AliMagWrapCheb::Field(Float_t *xyz, Float_t *b) const
103{
104 // Method to calculate the field at point xyz
105 //
106 if (fMeasuredMap) fMeasuredMap->Field(xyz,b);
107 for (int i=3;i--;) b[i] *= fFactor;
108}
109
110//_______________________________________________________________________
111AliMagWrapCheb& AliMagWrapCheb::operator=(const AliMagWrapCheb& maps)
112{
113 if (this != &maps && maps.fMeasuredMap) {
114 if (fMeasuredMap) delete fMeasuredMap;
115 fMeasuredMap = new AliMagFCheb(*maps.fMeasuredMap);
116 }
117 return *this;
118}