[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: G4SubtractionSolid.cc,v 1.31 2007/10/23 14:42:31 grichine Exp $ |
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[1228] | 28 | // GEANT4 tag $Name: geant4-09-03 $ |
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[831] | 29 | // |
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| 30 | // Implementation of methods for the class G4IntersectionSolid |
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| 31 | // |
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| 32 | // History: |
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| 33 | // |
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| 34 | // 14.10.98 V.Grichine: implementation of the first version |
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| 35 | // 19.10.98 V.Grichine: new algorithm of DistanceToIn(p,v) |
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| 36 | // 02.08.99 V.Grichine: bugs fixed in DistanceToOut(p,v,...) |
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| 37 | // while -> do-while & surfaceA limitations |
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| 38 | // 13.09.00 V.Grichine: bug fixed in SurfaceNormal(p), p can be inside |
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| 39 | // |
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| 40 | // -------------------------------------------------------------------- |
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| 41 | |
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| 42 | #include "G4SubtractionSolid.hh" |
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| 43 | |
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| 44 | #include "G4VoxelLimits.hh" |
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| 45 | #include "G4VPVParameterisation.hh" |
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| 46 | #include "G4GeometryTolerance.hh" |
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| 47 | |
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| 48 | #include "G4VGraphicsScene.hh" |
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| 49 | #include "G4Polyhedron.hh" |
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| 50 | #include "G4NURBS.hh" |
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| 51 | // #include "G4NURBSbox.hh" |
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| 52 | |
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| 53 | #include <sstream> |
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| 54 | |
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| 55 | /////////////////////////////////////////////////////////////////// |
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| 56 | // |
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| 57 | // Transfer all data members to G4BooleanSolid which is responsible |
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| 58 | // for them. pName will be in turn sent to G4VSolid |
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| 59 | |
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| 60 | G4SubtractionSolid::G4SubtractionSolid( const G4String& pName, |
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| 61 | G4VSolid* pSolidA , |
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| 62 | G4VSolid* pSolidB ) |
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| 63 | : G4BooleanSolid(pName,pSolidA,pSolidB) |
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| 64 | { |
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| 65 | } |
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| 66 | |
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| 67 | /////////////////////////////////////////////////////////////// |
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| 68 | // |
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| 69 | // Constructor |
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| 70 | |
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| 71 | G4SubtractionSolid::G4SubtractionSolid( const G4String& pName, |
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| 72 | G4VSolid* pSolidA , |
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| 73 | G4VSolid* pSolidB , |
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| 74 | G4RotationMatrix* rotMatrix, |
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| 75 | const G4ThreeVector& transVector ) |
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| 76 | : G4BooleanSolid(pName,pSolidA,pSolidB,rotMatrix,transVector) |
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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 | // |
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| 82 | // Constructor |
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| 83 | |
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| 84 | G4SubtractionSolid::G4SubtractionSolid( const G4String& pName, |
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| 85 | G4VSolid* pSolidA , |
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| 86 | G4VSolid* pSolidB , |
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| 87 | const G4Transform3D& transform ) |
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| 88 | : G4BooleanSolid(pName,pSolidA,pSolidB,transform) |
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| 89 | { |
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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 | // Fake default constructor - sets only member data and allocates memory |
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| 95 | // for usage restricted to object persistency. |
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| 96 | |
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| 97 | G4SubtractionSolid::G4SubtractionSolid( __void__& a ) |
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| 98 | : G4BooleanSolid(a) |
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| 99 | { |
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| 100 | } |
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| 101 | |
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| 102 | /////////////////////////////////////////////////////////////// |
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| 103 | // |
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| 104 | // Destructor |
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| 105 | |
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| 106 | G4SubtractionSolid::~G4SubtractionSolid() |
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| 107 | { |
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| 108 | } |
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| 109 | |
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| 110 | /////////////////////////////////////////////////////////////// |
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| 111 | // |
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| 112 | // CalculateExtent |
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| 113 | |
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| 114 | G4bool |
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| 115 | G4SubtractionSolid::CalculateExtent( const EAxis pAxis, |
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| 116 | const G4VoxelLimits& pVoxelLimit, |
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| 117 | const G4AffineTransform& pTransform, |
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| 118 | G4double& pMin, |
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| 119 | G4double& pMax ) const |
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| 120 | { |
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| 121 | // Since we cannot be sure how much the second solid subtracts |
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| 122 | // from the first, we must use the first solid's extent! |
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| 123 | |
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| 124 | return fPtrSolidA->CalculateExtent( pAxis, pVoxelLimit, |
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| 125 | pTransform, pMin, pMax ); |
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| 126 | } |
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| 127 | |
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| 128 | ///////////////////////////////////////////////////// |
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| 129 | // |
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| 130 | // Touching ? Empty subtraction ? |
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| 131 | |
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| 132 | EInside G4SubtractionSolid::Inside( const G4ThreeVector& p ) const |
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| 133 | { |
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| 134 | EInside positionA = fPtrSolidA->Inside(p); |
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| 135 | if (positionA == kOutside) return kOutside; |
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| 136 | |
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| 137 | EInside positionB = fPtrSolidB->Inside(p); |
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| 138 | |
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| 139 | if(positionA == kInside && positionB == kOutside) |
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| 140 | { |
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| 141 | return kInside ; |
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| 142 | } |
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| 143 | else |
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| 144 | { |
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| 145 | if(( positionA == kInside && positionB == kSurface) || |
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| 146 | ( positionB == kOutside && positionA == kSurface) || |
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| 147 | ( positionA == kSurface && positionB == kSurface && |
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| 148 | ( fPtrSolidA->SurfaceNormal(p) - |
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| 149 | fPtrSolidB->SurfaceNormal(p) ).mag2() > |
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| 150 | 1000*G4GeometryTolerance::GetInstance()->GetRadialTolerance() ) ) |
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| 151 | { |
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| 152 | return kSurface; |
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| 153 | } |
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| 154 | else |
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| 155 | { |
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| 156 | return kOutside; |
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| 157 | } |
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| 158 | } |
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| 159 | } |
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| 160 | |
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| 161 | ////////////////////////////////////////////////////////////// |
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| 162 | // |
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| 163 | // SurfaceNormal |
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| 164 | |
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| 165 | G4ThreeVector |
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| 166 | G4SubtractionSolid::SurfaceNormal( const G4ThreeVector& p ) const |
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| 167 | { |
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| 168 | G4ThreeVector normal; |
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| 169 | if( Inside(p) == kOutside ) |
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| 170 | { |
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| 171 | #ifdef G4BOOLDEBUG |
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| 172 | G4cout << "WARNING - Invalid call [1] in " |
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| 173 | << "G4SubtractionSolid::SurfaceNormal(p)" << G4endl |
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| 174 | << " Point p is inside !" << G4endl; |
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| 175 | G4cout << " p = " << p << G4endl; |
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| 176 | G4cerr << "WARNING - Invalid call [1] in " |
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| 177 | << "G4SubtractionSolid::SurfaceNormal(p)" << G4endl |
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| 178 | << " Point p is inside !" << G4endl; |
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| 179 | G4cerr << " p = " << p << G4endl; |
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| 180 | #endif |
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| 181 | } |
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| 182 | else |
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| 183 | { |
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| 184 | if( fPtrSolidA->Inside(p) == kSurface && |
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| 185 | fPtrSolidB->Inside(p) != kInside ) |
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| 186 | { |
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| 187 | normal = fPtrSolidA->SurfaceNormal(p) ; |
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| 188 | } |
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| 189 | else if( fPtrSolidA->Inside(p) == kInside && |
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| 190 | fPtrSolidB->Inside(p) != kOutside ) |
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| 191 | { |
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| 192 | normal = -fPtrSolidB->SurfaceNormal(p) ; |
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| 193 | } |
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| 194 | else |
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| 195 | { |
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| 196 | if ( fPtrSolidA->DistanceToOut(p) <= fPtrSolidB->DistanceToIn(p) ) |
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| 197 | { |
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| 198 | normal = fPtrSolidA->SurfaceNormal(p) ; |
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| 199 | } |
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| 200 | else |
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| 201 | { |
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| 202 | normal = -fPtrSolidB->SurfaceNormal(p) ; |
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| 203 | } |
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| 204 | #ifdef G4BOOLDEBUG |
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| 205 | if(Inside(p) == kInside) |
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| 206 | { |
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| 207 | G4cout << "WARNING - Invalid call [2] in " |
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| 208 | << "G4SubtractionSolid::SurfaceNormal(p)" << G4endl |
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| 209 | << " Point p is inside !" << G4endl; |
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| 210 | G4cout << " p = " << p << G4endl; |
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| 211 | G4cerr << "WARNING - Invalid call [2] in " |
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| 212 | << "G4SubtractionSolid::SurfaceNormal(p)" << G4endl |
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| 213 | << " Point p is inside !" << G4endl; |
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| 214 | G4cerr << " p = " << p << G4endl; |
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| 215 | } |
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| 216 | #endif |
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| 217 | } |
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| 218 | } |
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| 219 | return normal; |
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| 220 | } |
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| 221 | |
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| 222 | ///////////////////////////////////////////////////////////// |
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| 223 | // |
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| 224 | // The same algorithm as in DistanceToIn(p) |
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| 225 | |
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| 226 | G4double |
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| 227 | G4SubtractionSolid::DistanceToIn( const G4ThreeVector& p, |
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| 228 | const G4ThreeVector& v ) const |
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| 229 | { |
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| 230 | G4double dist = 0.0,disTmp = 0.0 ; |
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| 231 | |
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| 232 | #ifdef G4BOOLDEBUG |
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| 233 | if( Inside(p) == kInside ) |
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| 234 | { |
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| 235 | G4cout << "WARNING - Invalid call in " |
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| 236 | << "G4SubtractionSolid::DistanceToIn(p,v)" << G4endl |
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| 237 | << " Point p is inside !" << G4endl; |
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| 238 | G4cout << " p = " << p << G4endl; |
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| 239 | G4cout << " v = " << v << G4endl; |
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| 240 | G4cerr << "WARNING - Invalid call in " |
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| 241 | << "G4SubtractionSolid::DistanceToIn(p,v)" << G4endl |
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| 242 | << " Point p is inside !" << G4endl; |
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| 243 | G4cerr << " p = " << p << G4endl; |
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| 244 | G4cerr << " v = " << v << G4endl; |
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| 245 | } |
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| 246 | #endif |
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| 247 | |
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| 248 | // if( // ( fPtrSolidA->Inside(p) != kOutside) && // case1:p in both A&B |
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| 249 | if ( fPtrSolidB->Inside(p) != kOutside ) // start: out of B |
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| 250 | { |
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| 251 | dist = fPtrSolidB->DistanceToOut(p,v) ; // ,calcNorm,validNorm,n) ; |
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| 252 | |
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| 253 | if( fPtrSolidA->Inside(p+dist*v) != kInside ) |
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| 254 | { |
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| 255 | do |
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| 256 | { |
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| 257 | disTmp = fPtrSolidA->DistanceToIn(p+dist*v,v) ; |
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| 258 | |
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| 259 | if(disTmp == kInfinity) |
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| 260 | { |
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| 261 | return kInfinity ; |
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| 262 | } |
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| 263 | dist += disTmp ; |
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| 264 | |
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| 265 | if( Inside(p+dist*v) == kOutside ) |
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| 266 | { |
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| 267 | disTmp = fPtrSolidB->DistanceToOut(p+dist*v,v) ; |
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| 268 | dist += disTmp ; |
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| 269 | } |
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| 270 | } |
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| 271 | while( Inside(p+dist*v) == kOutside ) ; |
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| 272 | } |
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| 273 | } |
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| 274 | else // p outside A, start in A |
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| 275 | { |
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| 276 | dist = fPtrSolidA->DistanceToIn(p,v) ; |
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| 277 | |
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| 278 | if( dist == kInfinity ) // past A, hence past A\B |
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| 279 | { |
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| 280 | return kInfinity ; |
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| 281 | } |
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| 282 | else |
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| 283 | { |
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| 284 | while( Inside(p+dist*v) == kOutside ) // pushing loop |
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| 285 | { |
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| 286 | disTmp = fPtrSolidB->DistanceToOut(p+dist*v,v) ; |
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| 287 | dist += disTmp ; |
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| 288 | |
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| 289 | if( Inside(p+dist*v) == kOutside ) |
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| 290 | { |
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| 291 | disTmp = fPtrSolidA->DistanceToIn(p+dist*v,v) ; |
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| 292 | |
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| 293 | if(disTmp == kInfinity) // past A, hence past A\B |
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| 294 | { |
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| 295 | return kInfinity ; |
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| 296 | } |
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| 297 | dist += disTmp ; |
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| 298 | } |
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| 299 | } |
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| 300 | } |
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| 301 | } |
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| 302 | |
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| 303 | return dist ; |
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| 304 | } |
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| 305 | |
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| 306 | //////////////////////////////////////////////////////// |
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| 307 | // |
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| 308 | // Approximate nearest distance from the point p to the intersection of |
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| 309 | // two solids. It is usually underestimated from the point of view of |
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| 310 | // isotropic safety |
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| 311 | |
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| 312 | G4double |
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| 313 | G4SubtractionSolid::DistanceToIn( const G4ThreeVector& p ) const |
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| 314 | { |
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| 315 | G4double dist=0.0; |
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| 316 | |
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| 317 | #ifdef G4BOOLDEBUG |
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| 318 | if( Inside(p) == kInside ) |
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| 319 | { |
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| 320 | G4cout << "WARNING - Invalid call in " |
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| 321 | << "G4SubtractionSolid::DistanceToIn(p)" << G4endl |
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| 322 | << " Point p is inside !" << G4endl; |
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| 323 | G4cout << " p = " << p << G4endl; |
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| 324 | G4cerr << "WARNING - Invalid call in " |
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| 325 | << "G4SubtractionSolid::DistanceToIn(p)" << G4endl |
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| 326 | << " Point p is inside !" << G4endl; |
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| 327 | G4cerr << " p = " << p << G4endl; |
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| 328 | } |
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| 329 | #endif |
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| 330 | |
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| 331 | if( ( fPtrSolidA->Inside(p) != kOutside) && // case 1 |
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| 332 | ( fPtrSolidB->Inside(p) != kOutside) ) |
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| 333 | { |
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| 334 | dist= fPtrSolidB->DistanceToOut(p) ; |
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| 335 | } |
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| 336 | else |
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| 337 | { |
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| 338 | dist= fPtrSolidA->DistanceToIn(p) ; |
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| 339 | } |
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| 340 | |
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| 341 | return dist; |
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| 342 | } |
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| 343 | |
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| 344 | ////////////////////////////////////////////////////////// |
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| 345 | // |
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| 346 | // The same algorithm as DistanceToOut(p) |
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| 347 | |
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| 348 | G4double |
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| 349 | G4SubtractionSolid::DistanceToOut( const G4ThreeVector& p, |
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| 350 | const G4ThreeVector& v, |
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| 351 | const G4bool calcNorm, |
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| 352 | G4bool *validNorm, |
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| 353 | G4ThreeVector *n ) const |
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| 354 | { |
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| 355 | #ifdef G4BOOLDEBUG |
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| 356 | if( Inside(p) == kOutside ) |
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| 357 | { |
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| 358 | G4cout << "Position:" << G4endl << G4endl; |
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| 359 | G4cout << "p.x() = " << p.x()/mm << " mm" << G4endl; |
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| 360 | G4cout << "p.y() = " << p.y()/mm << " mm" << G4endl; |
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| 361 | G4cout << "p.z() = " << p.z()/mm << " mm" << G4endl << G4endl; |
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| 362 | G4cout << "Direction:" << G4endl << G4endl; |
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| 363 | G4cout << "v.x() = " << v.x() << G4endl; |
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| 364 | G4cout << "v.y() = " << v.y() << G4endl; |
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| 365 | G4cout << "v.z() = " << v.z() << G4endl << G4endl; |
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| 366 | G4cout << "WARNING - Invalid call in " |
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| 367 | << "G4SubtractionSolid::DistanceToOut(p,v)" << G4endl |
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| 368 | << " Point p is outside !" << G4endl; |
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| 369 | G4cout << " p = " << p << G4endl; |
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| 370 | G4cout << " v = " << v << G4endl; |
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| 371 | G4cerr << "WARNING - Invalid call in " |
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| 372 | << "G4SubtractionSolid::DistanceToOut(p,v)" << G4endl |
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| 373 | << " Point p is outside !" << G4endl; |
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| 374 | G4cerr << " p = " << p << G4endl; |
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| 375 | G4cerr << " v = " << v << G4endl; |
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| 376 | } |
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| 377 | #endif |
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| 378 | |
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| 379 | G4double distout; |
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| 380 | G4double distA = fPtrSolidA->DistanceToOut(p,v,calcNorm,validNorm,n) ; |
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| 381 | G4double distB = fPtrSolidB->DistanceToIn(p,v) ; |
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| 382 | if(distB < distA) |
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| 383 | { |
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| 384 | if(calcNorm) |
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| 385 | { |
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| 386 | *n = -(fPtrSolidB->SurfaceNormal(p+distB*v)) ; |
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| 387 | *validNorm = false ; |
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| 388 | } |
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| 389 | distout= distB ; |
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| 390 | } |
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| 391 | else |
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| 392 | { |
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| 393 | distout= distA ; |
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| 394 | } |
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| 395 | return distout; |
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| 396 | } |
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| 397 | |
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| 398 | ////////////////////////////////////////////////////////////// |
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| 399 | // |
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| 400 | // Inverted algorithm of DistanceToIn(p) |
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| 401 | |
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| 402 | G4double |
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| 403 | G4SubtractionSolid::DistanceToOut( const G4ThreeVector& p ) const |
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| 404 | { |
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| 405 | G4double dist=0.0; |
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| 406 | |
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| 407 | if( Inside(p) == kOutside ) |
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| 408 | { |
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| 409 | #ifdef G4BOOLDEBUG |
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| 410 | G4cout << "WARNING - Invalid call in " |
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| 411 | << "G4SubtractionSolid::DistanceToOut(p)" << G4endl |
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| 412 | << " Point p is outside" << G4endl; |
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| 413 | G4cout << " p = " << p << G4endl; |
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| 414 | G4cerr << "WARNING - Invalid call in " |
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| 415 | << "G4SubtractionSolid::DistanceToOut(p)" << G4endl |
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| 416 | << " Point p is outside" << G4endl; |
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| 417 | G4cerr << " p = " << p << G4endl; |
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| 418 | #endif |
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| 419 | } |
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| 420 | else |
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| 421 | { |
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| 422 | dist= std::min(fPtrSolidA->DistanceToOut(p), |
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| 423 | fPtrSolidB->DistanceToIn(p) ) ; |
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| 424 | } |
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| 425 | return dist; |
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| 426 | } |
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| 427 | |
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| 428 | ////////////////////////////////////////////////////////////// |
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| 429 | // |
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| 430 | // |
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| 431 | |
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| 432 | G4GeometryType G4SubtractionSolid::GetEntityType() const |
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| 433 | { |
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| 434 | return G4String("G4SubtractionSolid"); |
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| 435 | } |
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| 436 | |
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| 437 | ////////////////////////////////////////////////////////////// |
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| 438 | // |
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| 439 | // |
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| 440 | |
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| 441 | void |
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| 442 | G4SubtractionSolid::ComputeDimensions( G4VPVParameterisation*, |
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| 443 | const G4int, |
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| 444 | const G4VPhysicalVolume* ) |
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| 445 | { |
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| 446 | } |
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| 447 | |
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| 448 | ///////////////////////////////////////////////// |
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| 449 | // |
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| 450 | // |
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| 451 | |
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| 452 | void |
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| 453 | G4SubtractionSolid::DescribeYourselfTo ( G4VGraphicsScene& scene ) const |
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| 454 | { |
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| 455 | scene.AddSolid (*this); |
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| 456 | } |
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| 457 | |
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| 458 | //////////////////////////////////////////////////// |
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| 459 | // |
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| 460 | // |
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| 461 | |
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| 462 | G4Polyhedron* |
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| 463 | G4SubtractionSolid::CreatePolyhedron () const |
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| 464 | { |
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| 465 | G4Polyhedron* pA = fPtrSolidA->GetPolyhedron(); |
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| 466 | G4Polyhedron* pB = fPtrSolidB->GetPolyhedron(); |
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| 467 | if (pA && pB) |
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| 468 | { |
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| 469 | G4Polyhedron* resultant = new G4Polyhedron (pA->subtract(*pB)); |
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| 470 | return resultant; |
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| 471 | } |
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| 472 | else |
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| 473 | { |
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| 474 | std::ostringstream oss; |
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| 475 | oss << "Solid - " << GetName() |
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| 476 | << " - one of the Boolean components has no" << G4endl |
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| 477 | << " corresponding polyhedron. Returning NULL !"; |
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| 478 | G4Exception("G4SubtractionSolid::CreatePolyhedron()", "InvalidSetup", |
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| 479 | JustWarning, oss.str().c_str()); |
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| 480 | return 0; |
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| 481 | } |
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| 482 | } |
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| 483 | |
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| 484 | ///////////////////////////////////////////////////////// |
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| 485 | // |
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| 486 | // |
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| 487 | |
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| 488 | G4NURBS* |
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| 489 | G4SubtractionSolid::CreateNURBS () const |
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| 490 | { |
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| 491 | // Take into account boolean operation - see CreatePolyhedron. |
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| 492 | // return new G4NURBSbox (1.0, 1.0, 1.0); |
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| 493 | return 0; |
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| 494 | } |
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