| 1 | //
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| 2 | // ********************************************************************
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| 3 | // * License and Disclaimer *
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| 4 | // * *
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| 5 | // * The Geant4 software is copyright of the Copyright Holders of *
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| 6 | // * the Geant4 Collaboration. It is provided under the terms and *
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| 7 | // * conditions of the Geant4 Software License, included in the file *
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| 8 | // * LICENSE and available at http://cern.ch/geant4/license . These *
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| 9 | // * include a list of copyright holders. *
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| 10 | // * *
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| 11 | // * Neither the authors of this software system, nor their employing *
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| 12 | // * institutes,nor the agencies providing financial support for this *
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| 13 | // * work make any representation or warranty, express or implied, *
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| 14 | // * regarding this software system or assume any liability for its *
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| 15 | // * use. Please see the license in the file LICENSE and URL above *
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| 16 | // * for the full disclaimer and the limitation of liability. *
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| 17 | // * *
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| 18 | // * This code implementation is the result of the scientific and *
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| 19 | // * technical work of the GEANT4 collaboration. *
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| 20 | // * By using, copying, modifying or distributing the software (or *
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| 21 | // * any work based on the software) you agree to acknowledge its *
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| 22 | // * use in resulting scientific publications, and indicate your *
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| 23 | // * acceptance of all terms of the Geant4 Software license. *
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| 24 | // ********************************************************************
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| 25 | //
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| 26 | //
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| 27 | // $Id: G4UniformMagField.cc,v 1.11 2006/06/29 18:24:58 gunter Exp $
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| 28 | // GEANT4 tag $Name: geant4-09-02-cand-01 $
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| 29 | //
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| 30 | //
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| 31 | // Class for creation of uniform Magnetic Field
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| 32 | //
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| 33 | // 30.1.97 V.Grichine
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| 34 | //
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| 35 | // -------------------------------------------------------------------
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| 36 |
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| 37 | #include "G4UniformMagField.hh"
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| 38 |
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| 39 | G4UniformMagField::G4UniformMagField(const G4ThreeVector& FieldVector )
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| 40 | {
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| 41 | fFieldComponents[0] = FieldVector.x();
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| 42 | fFieldComponents[1] = FieldVector.y();
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| 43 | fFieldComponents[2] = FieldVector.z();
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| 44 | }
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| 45 |
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| 46 | void
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| 47 | G4UniformMagField::SetFieldValue(const G4ThreeVector& newFieldVector )
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| 48 | {
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| 49 | fFieldComponents[0] = newFieldVector.x();
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| 50 | fFieldComponents[1] = newFieldVector.y();
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| 51 | fFieldComponents[2] = newFieldVector.z();
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| 52 | }
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| 53 |
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| 54 | G4UniformMagField::G4UniformMagField(G4double vField,
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| 55 | G4double vTheta,
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| 56 | G4double vPhi )
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| 57 | {
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| 58 | if(vField >= 0 &&
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| 59 | vTheta >= 0 && vTheta <= pi &&
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| 60 | vPhi >= 0 && vPhi <= twopi)
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| 61 | {
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| 62 | fFieldComponents[0] = vField*std::sin(vTheta)*std::cos(vPhi) ;
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| 63 | fFieldComponents[1] = vField*std::sin(vTheta)*std::sin(vPhi) ;
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| 64 | fFieldComponents[2] = vField*std::cos(vTheta) ;
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| 65 | }
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| 66 | else
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| 67 | {
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| 68 | G4Exception("G4UniformMagField::G4UniformMagField()",
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| 69 | "WrongArgumentValue", FatalException, "Invalid parameters.") ;
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| 70 | }
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| 71 | }
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| 72 |
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| 73 | G4UniformMagField::~G4UniformMagField()
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| 74 | {
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| 75 | }
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| 76 |
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| 77 | G4UniformMagField::G4UniformMagField (const G4UniformMagField &p)
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| 78 | : G4MagneticField(p)
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| 79 | {
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| 80 | for (G4int i=0; i<3; i++)
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| 81 | fFieldComponents[i] = p.fFieldComponents[i];
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| 82 | }
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| 83 |
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| 84 | G4UniformMagField& G4UniformMagField::operator = (const G4UniformMagField &p)
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| 85 | {
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| 86 | if (&p == this) return *this;
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| 87 | for (G4int i=0; i<3; i++)
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| 88 | fFieldComponents[i] = p.fFieldComponents[i];
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| 89 | return *this;
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| 90 | }
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| 91 |
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| 92 | // ------------------------------------------------------------------------
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| 93 |
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| 94 | void G4UniformMagField::GetFieldValue (const G4double [4],
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| 95 | G4double *B ) const
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| 96 | {
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| 97 | B[0]= fFieldComponents[0] ;
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| 98 | B[1]= fFieldComponents[1] ;
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| 99 | B[2]= fFieldComponents[2] ;
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| 100 | }
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| 101 |
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| 102 | G4ThreeVector G4UniformMagField::GetConstantFieldValue() const
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| 103 | {
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| 104 | G4ThreeVector B(fFieldComponents[0],
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| 105 | fFieldComponents[1],
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| 106 | fFieldComponents[2]);
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| 107 | return B;
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| 108 | }
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