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: geant4-09-04-beta-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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