[831] | 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: G4SolidExtentList.cc,v 1.5 2007/05/11 13:54:29 gcosmo Exp $ |
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[1228] | 28 | // GEANT4 tag $Name: geant4-09-03 $ |
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[831] | 29 | // |
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| 30 | // |
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| 31 | // -------------------------------------------------------------------- |
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| 32 | // GEANT 4 class source file |
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| 33 | // |
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| 34 | // |
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| 35 | // G4SolidExtentList.cc |
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| 36 | // |
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| 37 | // Implementation of a list of (voxel) extents along one axis |
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| 38 | // |
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| 39 | // -------------------------------------------------------------------- |
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| 40 | |
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| 41 | #include "G4SolidExtentList.hh" |
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| 42 | #include "G4VoxelLimits.hh" |
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| 43 | #include "G4GeometryTolerance.hh" |
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| 44 | |
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| 45 | |
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| 46 | // |
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| 47 | // Constructor (default) |
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| 48 | // |
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| 49 | G4SolidExtentList::G4SolidExtentList() |
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| 50 | { |
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| 51 | axis = kZAxis; |
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| 52 | limited = false; |
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| 53 | minLimit = -DBL_MAX; |
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| 54 | maxLimit = +DBL_MAX; |
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| 55 | } |
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| 56 | |
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| 57 | |
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| 58 | // |
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| 59 | // Constructor (limited case) |
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| 60 | // |
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| 61 | G4SolidExtentList::G4SolidExtentList( const EAxis targetAxis, |
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| 62 | const G4VoxelLimits &voxelLimits ) |
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| 63 | { |
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| 64 | axis = targetAxis; |
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| 65 | |
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| 66 | limited = voxelLimits.IsLimited( axis ); |
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| 67 | if (limited) |
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| 68 | { |
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| 69 | minLimit = voxelLimits.GetMinExtent( axis ); |
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| 70 | maxLimit = voxelLimits.GetMaxExtent( axis ); |
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| 71 | } |
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| 72 | else |
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| 73 | { |
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| 74 | minLimit = -DBL_MAX; |
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| 75 | maxLimit = +DBL_MAX; |
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| 76 | } |
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| 77 | } |
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| 78 | |
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| 79 | |
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| 80 | // |
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| 81 | // Destructor |
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| 82 | // |
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| 83 | G4SolidExtentList::~G4SolidExtentList() |
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| 84 | { |
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| 85 | } |
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| 86 | |
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| 87 | |
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| 88 | // |
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| 89 | // AddSurface |
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| 90 | // |
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| 91 | // |
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| 92 | void G4SolidExtentList::AddSurface( const G4ClippablePolygon &surface ) |
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| 93 | { |
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| 94 | // |
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| 95 | // Keep track of four surfaces |
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| 96 | // |
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| 97 | G4double min, max; |
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| 98 | |
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| 99 | surface.GetExtent( axis, min, max ); |
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| 100 | |
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| 101 | if (min > maxLimit) |
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| 102 | { |
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| 103 | // |
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| 104 | // Nearest surface beyond maximum limit |
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| 105 | // |
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| 106 | if (surface.InFrontOf(minAbove,axis)) minAbove = surface; |
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| 107 | } |
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| 108 | else if (max < minLimit) |
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| 109 | { |
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| 110 | // |
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| 111 | // Nearest surface below minimum limit |
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| 112 | // |
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| 113 | if (surface.BehindOf(maxBelow,axis)) maxBelow = surface; |
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| 114 | } |
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| 115 | else |
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| 116 | { |
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| 117 | // |
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| 118 | // Max and min surfaces inside |
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| 119 | // |
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| 120 | if (surface.BehindOf(maxSurface,axis)) maxSurface = surface; |
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| 121 | if (surface.InFrontOf(minSurface,axis)) minSurface = surface; |
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| 122 | } |
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| 123 | } |
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| 124 | |
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| 125 | |
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| 126 | |
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| 127 | // |
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| 128 | // GetExtent |
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| 129 | // |
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| 130 | // Return extent after processing all surfaces |
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| 131 | // |
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| 132 | G4bool G4SolidExtentList::GetExtent( G4double &min, G4double &max ) const |
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| 133 | { |
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| 134 | G4double kCarTolerance = G4GeometryTolerance::GetInstance() |
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| 135 | ->GetSurfaceTolerance(); |
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| 136 | // |
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| 137 | // Did we have any surfaces within the limits? |
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| 138 | // |
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| 139 | if (minSurface.Empty()) |
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| 140 | { |
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| 141 | // |
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| 142 | // Nothing! Do we have anything above? |
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| 143 | // |
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| 144 | if (minAbove.Empty()) return false; |
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| 145 | |
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| 146 | // |
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| 147 | // Yup. Is it facing inwards? |
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| 148 | // |
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| 149 | if (minAbove.GetNormal().operator()(axis) < 0) return false; |
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| 150 | |
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| 151 | // |
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| 152 | // No. We must be entirely within the solid |
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| 153 | // |
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| 154 | max = maxLimit + kCarTolerance; |
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| 155 | min = minLimit - kCarTolerance; |
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| 156 | return true; |
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| 157 | } |
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| 158 | |
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| 159 | // |
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| 160 | // Check max surface |
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| 161 | // |
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| 162 | if (maxSurface.GetNormal().operator()(axis) < 0) |
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| 163 | { |
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| 164 | // |
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| 165 | // Inward facing: max limit must be embedded within solid |
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| 166 | // |
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| 167 | max = maxLimit + kCarTolerance; |
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| 168 | } |
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| 169 | else |
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| 170 | { |
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| 171 | G4double sMin, sMax; |
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| 172 | maxSurface.GetExtent( axis, sMin, sMax ); |
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| 173 | max = ( (sMax > maxLimit) ? maxLimit : sMax ) + kCarTolerance; |
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| 174 | } |
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| 175 | |
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| 176 | // |
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| 177 | // Check min surface |
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| 178 | // |
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| 179 | if (minSurface.GetNormal().operator()(axis) > 0) |
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| 180 | { |
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| 181 | // |
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| 182 | // Inward facing: max limit must be embedded within solid |
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| 183 | // |
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| 184 | min = minLimit - kCarTolerance; |
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| 185 | } |
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| 186 | else |
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| 187 | { |
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| 188 | G4double sMin, sMax; |
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| 189 | minSurface.GetExtent( axis, sMin, sMax ); |
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| 190 | min = ( (sMin < minLimit) ? minLimit : sMin ) - kCarTolerance; |
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| 191 | } |
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| 192 | |
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| 193 | return true; |
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| 194 | } |
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| 195 | |
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