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: G4SafetyHelper.hh,v 1.7 2007/05/02 15:32:13 japost Exp $ |
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28 | // GEANT4 tag $Name: HEAD $ |
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29 | // |
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30 | // |
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31 | // class G4SafetyHelper |
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32 | // |
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33 | // Class description: |
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34 | // |
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35 | // This class is a helper for physics processes which require |
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36 | // knowledge of the safety, and the step size for the 'mass' geometry |
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37 | |
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38 | // First version: J. Apostolakis, July 5th, 2006 |
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39 | // Modified: |
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40 | // 10.04.07 V.Ivanchenko Use unique G4SafetyHelper |
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41 | // -------------------------------------------------------------------- |
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42 | |
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43 | #ifndef G4SAFETYHELPER_HH |
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44 | #define G4SAFETYHELPER_HH 1 |
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45 | |
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46 | #include <vector> |
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47 | |
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48 | #include "G4Types.hh" |
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49 | #include "G4ThreeVector.hh" |
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50 | #include "G4Navigator.hh" |
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51 | |
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52 | class G4PathFinder; |
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53 | |
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54 | class G4SafetyHelper |
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55 | { |
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56 | public: // with description |
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57 | |
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58 | G4SafetyHelper(); |
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59 | ~G4SafetyHelper(); |
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60 | // |
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61 | // Constructor and destructor |
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62 | |
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63 | G4double CheckNextStep( const G4ThreeVector& position, |
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64 | const G4ThreeVector& direction, |
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65 | const G4double currentMaxStep, |
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66 | G4double& newSafety ); |
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67 | // |
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68 | // Return linear step for mass geometry |
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69 | |
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70 | G4double ComputeSafety( const G4ThreeVector& pGlobalPoint ); |
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71 | // |
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72 | // Return safety for all geometries |
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73 | |
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74 | void Locate(const G4ThreeVector& pGlobalPoint, |
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75 | const G4ThreeVector& direction); |
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76 | // |
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77 | // Locate the point for all geometries |
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78 | |
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79 | void ReLocateWithinVolume(const G4ThreeVector& pGlobalPoint ); |
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80 | // |
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81 | // Relocate the point in the volume of interest |
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82 | |
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83 | inline void EnableParallelNavigation(G4bool parallel); |
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84 | // |
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85 | // To have parallel worlds considered, must be true. |
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86 | // Alternative is to use single (mass) Navigator directly |
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87 | |
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88 | void InitialiseNavigator(); |
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89 | // |
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90 | // Check for new navigator for tracking, and reinitialise pointer |
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91 | |
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92 | inline G4VPhysicalVolume* GetWorldVolume(); |
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93 | inline void SetCurrentSafety(G4double val, const G4ThreeVector& pos); |
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94 | |
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95 | public: // without description |
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96 | |
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97 | void InitialiseHelper(); |
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98 | |
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99 | private: |
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100 | |
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101 | G4PathFinder* fpPathFinder; |
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102 | G4Navigator* fpMassNavigator; |
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103 | G4int fMassNavigatorId; |
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104 | |
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105 | G4bool fUseParallelGeometries; |
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106 | // Flag whether to use PathFinder or single (mass) Navigator directly |
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107 | G4bool fFirstCall; |
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108 | // Flag of first call |
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109 | |
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110 | // State used during tracking -- for optimisation |
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111 | G4ThreeVector fLastSafetyPosition; |
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112 | G4double fLastSafety; |
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113 | const G4double fRecomputeFactor; |
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114 | // parameter for further optimisation: |
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115 | // if ( move < fact*safety ) do fast recomputation of safety |
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116 | // End State (tracking) |
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117 | }; |
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118 | |
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119 | // Inline definitions |
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120 | |
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121 | inline |
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122 | void G4SafetyHelper::EnableParallelNavigation(G4bool parallel) |
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123 | { |
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124 | fUseParallelGeometries = parallel; |
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125 | } |
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126 | |
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127 | inline |
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128 | G4VPhysicalVolume* G4SafetyHelper::GetWorldVolume() |
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129 | { |
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130 | return fpMassNavigator->GetWorldVolume(); |
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131 | } |
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132 | |
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133 | inline |
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134 | void G4SafetyHelper::SetCurrentSafety(G4double val, const G4ThreeVector& pos) |
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135 | { |
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136 | fLastSafety = val; |
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137 | fLastSafetyPosition = pos; |
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138 | } |
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139 | |
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140 | #endif |
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