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[u/mrichter/AliRoot.git] / STEER / AliMagFCM.h
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aee8290b 1#ifndef ALIMAGFCM_H
2#define ALIMAGFCM_H
3/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * See cxx source for full Copyright notice */
5
6/* $Id$ */
7
8#include "AliMagF.h"
94de3818 9#include "TVector.h"
aee8290b 10
11class AliMagFCM : public AliMagF
12{
13 //Alice Magnetic Field with constan mesh
14
15public:
16 AliMagFCM(){}
17 AliMagFCM(const char *name, const char *title, const Int_t integ, const Int_t map,
18 const Float_t factor, const Float_t fmax);
19 AliMagFCM(const AliMagFCM &mag);
20 virtual ~AliMagFCM() {delete fB;}
21 virtual void Field(Float_t *x, Float_t *b);
22 virtual void ReadField();
ef42d733 23 void Copy(AliMagFCM &magf) const;
aee8290b 24 virtual AliMagFCM & operator=(const AliMagFCM &magf);
25
26 Float_t Bx(const Int_t ix, const Int_t iy, const Int_t iz) {
27 return (*fB)(3*(iz*(fXn*fYn)+iy*fXn+ix));
28 }
29 Float_t By(const Int_t ix, const Int_t iy, const Int_t iz) {
30 return (*fB)(3*(iz*(fXn*fYn)+iy*fXn+ix)+1);
31 }
32 Float_t Bz(const Int_t ix, const Int_t iy, const Int_t iz) {
33 return (*fB)(3*(iz*(fXn*fYn)+iy*fXn+ix)+2);
34 }
35
36protected:
37
38 Float_t fXbeg; // Start of mesh in x
39 Float_t fYbeg; // Start of mesh in y
40 Float_t fZbeg; // Start of mesh in z
41 Float_t fXdel; // Mesh step in x
42 Float_t fYdel; // Mesh step in y
43 Float_t fZdel; // Mesh step in z
44 Double_t fXdeli; // Inverse of Mesh step in x
45 Double_t fYdeli; // Inverse of Mesh step in y
46 Double_t fZdeli; // Inverse of Mesh step in z
47 Int_t fXn; // Number of mesh points in x
48 Int_t fYn; // Number of mesh points in y
49 Int_t fZn; // Number of mesh points in z
50 TVector *fB; // Field map
51
52 ClassDef(AliMagFCM,1) //Class for all Alice MagField with Constant Mesh
53};
54
55#endif