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: G4AuxiliaryNavServices.icc,v 1.4 2007/05/22 07:48:08 gcosmo 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 G4AuxiliaryNavServices Inline implementation |
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32 | // |
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33 | // -------------------------------------------------------------------- |
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34 | |
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35 | inline G4bool |
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36 | G4AuxiliaryNavServices:: |
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37 | CheckPointOnSurface( const G4VSolid* sampleSolid, |
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38 | const G4ThreeVector& localPoint, |
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39 | const G4ThreeVector* globalDirection, |
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40 | const G4AffineTransform& sampleTransform, |
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41 | const G4bool locatedOnEdge) |
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42 | { |
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43 | G4ThreeVector localDirection, sampleNormal; |
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44 | G4bool enter = false; |
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45 | |
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46 | EInside insideSolid = sampleSolid->Inside(localPoint); |
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47 | if ( insideSolid!=kOutside ) |
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48 | { |
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49 | G4bool checkDirection= locatedOnEdge && (globalDirection!=0); |
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50 | if( (insideSolid==kSurface) && checkDirection) |
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51 | { |
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52 | // We are probably located on an edge. |
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53 | // |
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54 | localDirection= sampleTransform.TransformAxis(*globalDirection); |
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55 | |
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56 | // Check whether we enter the volume |
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57 | // |
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58 | sampleNormal = sampleSolid->SurfaceNormal(localPoint); |
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59 | if ( sampleNormal.dot(localDirection) <= 0 ) |
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60 | { |
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61 | if( sampleNormal.dot(localDirection) == 0 ) |
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62 | { |
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63 | // We can't decide yet, let's make sure we're entering the solid. |
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64 | // If by a confusion we entered the next solid we find out now |
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65 | // whether to leave or to enter. |
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66 | // This happens when we're on the surface or edge shared by two |
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67 | // solids |
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68 | // |
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69 | G4double distanceToIn = |
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70 | sampleSolid->DistanceToIn( localPoint, localDirection ); |
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71 | if( distanceToIn != kInfinity ) |
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72 | { |
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73 | enter = true; |
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74 | } |
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75 | } |
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76 | else |
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77 | { |
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78 | enter = true; |
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79 | } |
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80 | } |
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81 | } |
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82 | else |
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83 | { |
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84 | enter = true; |
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85 | } |
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86 | } |
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87 | return enter; |
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88 | } |
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89 | |
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90 | // -------------------------------------------------------------------- |
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91 | |
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92 | inline G4bool |
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93 | G4AuxiliaryNavServices:: |
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94 | CheckPointExiting( const G4VSolid* sampleSolid, |
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95 | const G4ThreeVector& localPoint, |
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96 | const G4ThreeVector* globalDirection, |
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97 | const G4AffineTransform& sampleTransform ) |
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98 | { |
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99 | if( !globalDirection ) { return false; } |
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100 | |
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101 | G4ThreeVector localDirection, sampleNormal; |
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102 | G4bool exiting = false; |
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103 | |
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104 | EInside insideSolid = sampleSolid->Inside(localPoint); |
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105 | if( (insideSolid==kSurface) ) |
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106 | { |
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107 | localDirection= sampleTransform.TransformAxis(*globalDirection); |
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108 | |
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109 | // Check whether we are exiting the volume |
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110 | // |
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111 | sampleNormal = sampleSolid->SurfaceNormal(localPoint); |
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112 | if ( sampleNormal.dot(localDirection) >= 0 ) |
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113 | { |
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114 | if( sampleNormal.dot(localDirection) == 0 ) |
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115 | { |
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116 | // We can't decide yet, let's make sure we're entering the solid. |
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117 | // If by a confusion we entered the next solid we find out now |
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118 | // whether to leave or to exiting. |
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119 | // This happens when we're on the surface or edge shared by two |
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120 | // solids |
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121 | // |
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122 | G4double distanceToIn = |
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123 | sampleSolid->DistanceToIn( localPoint, localDirection ); |
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124 | if( distanceToIn != kInfinity ) |
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125 | { |
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126 | exiting = true; |
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127 | } |
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128 | } |
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129 | else |
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130 | { |
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131 | exiting = true; |
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132 | } |
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133 | } |
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134 | } |
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135 | return exiting; |
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136 | } |
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