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 | // |
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28 | // |
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29 | |
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30 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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31 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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32 | |
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33 | #ifndef F04ElementField_h |
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34 | #define F04ElementField_h 1 |
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35 | |
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36 | #include "globals.hh" |
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37 | |
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38 | #include "G4Navigator.hh" |
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39 | #include "G4TransportationManager.hh" |
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40 | |
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41 | #include "G4UserLimits.hh" |
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42 | #include "G4VisAttributes.hh" |
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43 | |
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44 | // class F04ElementField - interface for the EM field of one element |
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45 | |
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46 | // This is the interface class used by GlobalField to compute the field |
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47 | // value at a given point[]. |
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48 | |
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49 | // An element that represents an element with an EM field will |
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50 | // derive a class from this one and implement the computation for the |
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51 | // element. The construct() function will add the derived object into |
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52 | // GlobalField. |
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53 | |
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54 | class F04ElementField |
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55 | { |
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56 | |
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57 | private: |
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58 | |
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59 | F04ElementField& operator=(const F04ElementField&); |
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60 | |
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61 | public: |
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62 | |
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63 | /// Constructor. |
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64 | F04ElementField(const G4ThreeVector, G4LogicalVolume*); |
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65 | |
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66 | /// the actual implementation constructs the F04ElementField |
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67 | void construct(); |
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68 | |
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69 | /// Destructor. |
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70 | virtual ~F04ElementField() { if (aNavigator) delete aNavigator; } |
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71 | |
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72 | /// setMaxStep(G4double) sets the max. step size |
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73 | void setMaxStep(G4double s) |
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74 | { |
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75 | maxStep = s; |
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76 | userLimits->SetMaxAllowedStep(maxStep); |
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77 | lvolume->SetUserLimits(userLimits); |
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78 | } |
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79 | |
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80 | /// getMaxStep() returns the max. step size |
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81 | G4double getMaxStep() { return maxStep; } |
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82 | |
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83 | /// setColor(G4String) sets the color |
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84 | void setColor(G4String c) |
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85 | { |
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86 | color = c; |
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87 | lvolume->SetVisAttributes(getVisAttribute(color)); |
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88 | } |
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89 | |
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90 | /// getColor() returns the color |
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91 | G4String getColor() { return color; } |
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92 | |
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93 | /// getVisAttribute() returns the appropriate G4VisAttributes. |
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94 | static G4VisAttributes* getVisAttribute(G4String color); |
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95 | |
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96 | /// setGlobalPoint() ensures that the point is within the global |
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97 | /// bounding box of this ElementField's global coordinates. |
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98 | /// Normally called 8 times for the corners of the local bounding |
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99 | /// box, after a local->global coordinate transform. |
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100 | /// If never called, the global bounding box is infinite. |
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101 | /// BEWARE: if called only once, the bounding box is just a point. |
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102 | void setGlobalPoint(const G4double point[4]) |
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103 | { |
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104 | if(minX == -DBL_MAX || minX > point[0]) minX = point[0]; |
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105 | if(minY == -DBL_MAX || minY > point[1]) minY = point[1]; |
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106 | if(minZ == -DBL_MAX || minZ > point[2]) minZ = point[2]; |
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107 | if(maxX == DBL_MAX || maxX < point[0]) maxX = point[0]; |
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108 | if(maxY == DBL_MAX || maxY < point[1]) maxY = point[1]; |
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109 | if(maxZ == DBL_MAX || maxZ < point[2]) maxZ = point[2]; |
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110 | } |
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111 | |
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112 | /// isInBoundingBox() returns true if the point is within the |
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113 | /// global bounding box - global coordinates. |
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114 | bool isInBoundingBox(const G4double point[4]) const |
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115 | { |
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116 | if(point[2] < minZ || point[2] > maxZ) return false; |
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117 | if(point[0] < minX || point[0] > maxX) return false; |
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118 | if(point[1] < minY || point[1] > maxY) return false; |
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119 | return true; |
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120 | } |
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121 | |
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122 | /// addFieldValue() will add the field value for this element to field[]. |
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123 | /// Implementations must be sure to verify that point[] is within |
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124 | /// the field region, and do nothing if not. |
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125 | /// point[] is in global coordinates and geant4 units; x,y,z,t. |
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126 | /// field[] is in geant4 units; Bx,By,Bz,Ex,Ey,Ez. |
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127 | /// For efficiency, the caller may (but need not) call |
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128 | /// isInBoundingBox(point), and only call this function if that |
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129 | /// returns true. |
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130 | virtual void |
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131 | addFieldValue(const G4double point[4], G4double field[6]) const = 0; |
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132 | |
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133 | virtual G4double getLength() = 0; |
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134 | virtual G4double getWidth() = 0; |
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135 | virtual G4double getHeight() = 0; |
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136 | |
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137 | protected: |
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138 | |
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139 | G4LogicalVolume* lvolume; |
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140 | |
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141 | G4AffineTransform global2local; |
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142 | |
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143 | // F04ElementField(const F04ElementField&); |
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144 | |
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145 | private: |
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146 | |
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147 | static G4Navigator* aNavigator; |
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148 | |
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149 | G4String color; |
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150 | |
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151 | G4ThreeVector center; |
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152 | G4double minX, minY, minZ, maxX, maxY,maxZ; |
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153 | |
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154 | G4double maxStep; |
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155 | G4UserLimits* userLimits; |
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156 | |
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157 | }; |
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158 | |
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159 | #endif |
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