Adding track references at decay points (M.Ivanov)
[u/mrichter/AliRoot.git] / STEER / AliMagF.cxx
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4c039060 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
acd84897 16/* $Id$ */
4c039060 17
5d8718b8 18//----------------------------------------------------------------------
116cbefd 19// Basic magnetic field class
5d8718b8 20// Used in all the detectors, and also in the traking classes
21// Author:
22//----------------------------------------------------------------------
fe4da5cc 23
24#include "AliMagF.h"
7a15f6b8 25
fe4da5cc 26ClassImp(AliMagF)
27
e2afb3b6 28//_______________________________________________________________________
29AliMagF::AliMagF():
30 fMap(0),
31 fType(0),
32 fInteg(0),
33 fFactor(0),
34 fMax(0),
35 fDebug(0)
36{
37 //
38 // Default constructor
39 //
40}
41
42//_______________________________________________________________________
aee8290b 43AliMagF::AliMagF(const char *name, const char *title, const Int_t integ,
e2afb3b6 44 const Float_t factor, const Float_t fmax):
45 TNamed(name,title),
46 fMap(0),
47 fType(0),
48 fInteg(0),
49 fFactor(factor),
50 fMax(fmax),
51 fDebug(0)
fe4da5cc 52{
aee8290b 53 //
54 // Standard constructor
55 //
d8408e76 56 if(integ<0 || integ > 2) {
e2afb3b6 57 Warning("SetField",
58 "Invalid magnetic field flag: %5d; Helix tracking chosen instead\n"
59 ,integ);
60 fInteg = 2;
d8408e76 61 } else {
e2afb3b6 62 fInteg = integ;
d8408e76 63 }
64 fType = kUndef;
9e1a0ddb 65 //
66 fDebug = 0;
fe4da5cc 67}
68
e2afb3b6 69//_______________________________________________________________________
fe4da5cc 70void AliMagF::Field(Float_t*, Float_t *b)
71{
aee8290b 72 //
73 // Method to return the field in one point -- dummy in this case
74 //
e2afb3b6 75 Warning("Field","Undefined MagF Field called, returning 0\n");
fe4da5cc 76 b[0]=b[1]=b[2]=0;
77}