[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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[1340] | 27 | // $Id: G4VSolid.cc,v 1.40 2010/10/19 15:19:37 gcosmo Exp $ |
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| 28 | // GEANT4 tag $Name: geommng-V09-03-05 $ |
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[831] | 29 | // |
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| 30 | // class G4VSolid |
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| 31 | // |
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| 32 | // Implementation for solid base class |
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| 33 | // |
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| 34 | // History: |
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| 35 | // |
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| 36 | // 06.12.02 V.Grichine, restored original conditions in ClipPolygon() |
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| 37 | // 10.05.02 V.Grichine, ClipPolygon(): clip only other axis and limited voxels |
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| 38 | // 15.04.02 V.Grichine, bug fixed in ClipPolygon(): clip only one axis |
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| 39 | // 13.03.02 V.Grichine, cosmetics of voxel limit functions |
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| 40 | // 15.11.00 D.Williams, V.Grichine, fix in CalculateClippedPolygonExtent() |
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| 41 | // 10.07.95 P.Kent, Added == operator, solid Store entry |
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| 42 | // 30.06.95 P.Kent, Created. |
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| 43 | // -------------------------------------------------------------------- |
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| 44 | |
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| 45 | #include "G4VSolid.hh" |
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| 46 | #include "G4SolidStore.hh" |
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| 47 | #include "globals.hh" |
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| 48 | #include "Randomize.hh" |
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| 49 | #include "G4GeometryTolerance.hh" |
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| 50 | |
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| 51 | #include "G4VoxelLimits.hh" |
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| 52 | #include "G4AffineTransform.hh" |
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| 53 | #include "G4VisExtent.hh" |
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| 54 | |
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| 55 | ////////////////////////////////////////////////////////////////////////// |
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| 56 | // |
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| 57 | // Constructor |
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| 58 | // - Copies name |
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| 59 | // - Add ourselves to solid Store |
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| 60 | |
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| 61 | G4VSolid::G4VSolid(const G4String& name) |
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| 62 | : fshapeName(name) |
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| 63 | { |
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| 64 | kCarTolerance = G4GeometryTolerance::GetInstance()->GetSurfaceTolerance(); |
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| 65 | |
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| 66 | // Register to store |
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| 67 | // |
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| 68 | G4SolidStore::GetInstance()->Register(this); |
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| 69 | } |
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| 70 | |
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| 71 | ////////////////////////////////////////////////////////////////////////// |
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| 72 | // |
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[921] | 73 | // Copy constructor |
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[831] | 74 | // |
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| 75 | |
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| 76 | G4VSolid::G4VSolid(const G4VSolid& rhs) |
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| 77 | : kCarTolerance(rhs.kCarTolerance), fshapeName(rhs.fshapeName) |
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| 78 | { |
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| 79 | // Register to store |
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| 80 | // |
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| 81 | G4SolidStore::GetInstance()->Register(this); |
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| 82 | } |
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| 83 | |
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| 84 | ////////////////////////////////////////////////////////////////////////// |
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| 85 | // |
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| 86 | // Fake default constructor - sets only member data and allocates memory |
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| 87 | // for usage restricted to object persistency. |
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| 88 | // |
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| 89 | G4VSolid::G4VSolid( __void__& ) |
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| 90 | : fshapeName("") |
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| 91 | { |
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| 92 | // Register to store |
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| 93 | // |
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| 94 | G4SolidStore::GetInstance()->Register(this); |
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| 95 | } |
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| 96 | |
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| 97 | ////////////////////////////////////////////////////////////////////////// |
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| 98 | // |
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| 99 | // Destructor (virtual) |
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| 100 | // - Remove ourselves from solid Store |
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| 101 | |
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| 102 | G4VSolid::~G4VSolid() |
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| 103 | { |
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| 104 | G4SolidStore::GetInstance()->DeRegister(this); |
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| 105 | } |
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| 106 | |
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| 107 | ////////////////////////////////////////////////////////////////////////// |
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| 108 | // |
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| 109 | // Assignment operator |
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| 110 | |
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| 111 | G4VSolid& G4VSolid::operator = (const G4VSolid& rhs) |
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| 112 | { |
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| 113 | // Check assignment to self |
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| 114 | // |
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| 115 | if (this == &rhs) { return *this; } |
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| 116 | |
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| 117 | // Copy data |
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| 118 | // |
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| 119 | kCarTolerance = rhs.kCarTolerance; |
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| 120 | fshapeName = rhs.fshapeName; |
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| 121 | |
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| 122 | return *this; |
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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 | // Streaming operator dumping solid contents |
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| 128 | |
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| 129 | std::ostream& operator<< ( std::ostream& os, const G4VSolid& e ) |
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| 130 | { |
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| 131 | return e.StreamInfo(os); |
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| 132 | } |
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| 133 | |
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| 134 | ////////////////////////////////////////////////////////////////////////// |
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| 135 | // |
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| 136 | // Throw exception if ComputeDimensions called for illegal derived class |
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| 137 | |
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| 138 | void G4VSolid::ComputeDimensions(G4VPVParameterisation*, |
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| 139 | const G4int, |
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| 140 | const G4VPhysicalVolume*) |
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| 141 | { |
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| 142 | G4cerr << "ERROR - Illegal call to G4VSolid::ComputeDimensions()" << G4endl |
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| 143 | << " Method not overloaded by derived class !" << G4endl; |
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| 144 | G4Exception("G4VSolid::ComputeDimensions()", "NotApplicable", |
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| 145 | FatalException, "Illegal call to case class."); |
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| 146 | } |
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| 147 | |
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| 148 | ////////////////////////////////////////////////////////////////////////// |
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| 149 | // |
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| 150 | // Throw exception (warning) for solids not implementing the method |
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| 151 | |
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| 152 | G4ThreeVector G4VSolid::GetPointOnSurface() const |
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| 153 | { |
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| 154 | G4cerr << "WARNING - G4VSolid::GetPointOnSurface()" << G4endl |
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| 155 | << " Not implemented for solid: " |
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| 156 | << this->GetEntityType() << " !" << G4endl; |
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| 157 | G4Exception("G4VSolid::GetPointOnSurface()", "NotImplemented", |
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| 158 | JustWarning, "Not implemented for this solid ! Returning origin."); |
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| 159 | return G4ThreeVector(0,0,0); |
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| 160 | } |
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| 161 | |
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[1340] | 162 | ////////////////////////////////////////////////////////////////////////// |
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| 163 | // |
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| 164 | // Dummy implementations ... |
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| 165 | |
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| 166 | const G4VSolid* G4VSolid::GetConstituentSolid(G4int) const |
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| 167 | { return 0; } |
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| 168 | |
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| 169 | G4VSolid* G4VSolid::GetConstituentSolid(G4int) |
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| 170 | { return 0; } |
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| 171 | |
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| 172 | const G4DisplacedSolid* G4VSolid::GetDisplacedSolidPtr() const |
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| 173 | { return 0; } |
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| 174 | |
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| 175 | G4DisplacedSolid* G4VSolid::GetDisplacedSolidPtr() |
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| 176 | { return 0; } |
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| 177 | |
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| 178 | //////////////////////////////////////////////////////////////// |
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| 179 | // |
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| 180 | // Returns an estimation of the solid volume in internal units. |
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| 181 | // The number of statistics and error accuracy is fixed. |
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| 182 | // This method may be overloaded by derived classes to compute the |
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| 183 | // exact geometrical quantity for solids where this is possible. |
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| 184 | // or anyway to cache the computed value. |
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| 185 | // This implementation does NOT cache the computed value. |
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| 186 | |
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| 187 | G4double G4VSolid::GetCubicVolume() |
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| 188 | { |
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| 189 | G4int cubVolStatistics = 1000000; |
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| 190 | G4double cubVolEpsilon = 0.001; |
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| 191 | return EstimateCubicVolume(cubVolStatistics, cubVolEpsilon); |
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| 192 | } |
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| 193 | |
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| 194 | //////////////////////////////////////////////////////////////// |
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| 195 | // |
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| 196 | // Calculate cubic volume based on Inside() method. |
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| 197 | // Accuracy is limited by the second argument or the statistics |
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| 198 | // expressed by the first argument. |
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| 199 | // Implementation is courtesy of Vasiliki Despoina Mitsou, |
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| 200 | // University of Athens. |
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| 201 | |
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| 202 | G4double G4VSolid::EstimateCubicVolume(G4int nStat, G4double epsilon) const |
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| 203 | { |
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| 204 | G4int iInside=0; |
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| 205 | G4double px,py,pz,minX,maxX,minY,maxY,minZ,maxZ,volume; |
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| 206 | G4bool yesno; |
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| 207 | G4ThreeVector p; |
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| 208 | EInside in; |
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| 209 | |
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| 210 | // values needed for CalculateExtent signature |
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| 211 | |
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| 212 | G4VoxelLimits limit; // Unlimited |
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| 213 | G4AffineTransform origin; |
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| 214 | |
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| 215 | // min max extents of pSolid along X,Y,Z |
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| 216 | |
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| 217 | yesno = this->CalculateExtent(kXAxis,limit,origin,minX,maxX); |
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| 218 | yesno = this->CalculateExtent(kYAxis,limit,origin,minY,maxY); |
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| 219 | yesno = this->CalculateExtent(kZAxis,limit,origin,minZ,maxZ); |
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| 220 | |
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| 221 | // limits |
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| 222 | |
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| 223 | if(nStat < 100) nStat = 100; |
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| 224 | if(epsilon > 0.01) epsilon = 0.01; |
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| 225 | |
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| 226 | for(G4int i = 0; i < nStat; i++ ) |
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| 227 | { |
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| 228 | px = minX+(maxX-minX)*G4UniformRand(); |
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| 229 | py = minY+(maxY-minY)*G4UniformRand(); |
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| 230 | pz = minZ+(maxZ-minZ)*G4UniformRand(); |
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| 231 | p = G4ThreeVector(px,py,pz); |
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| 232 | in = this->Inside(p); |
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| 233 | if(in != kOutside) iInside++; |
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| 234 | } |
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| 235 | volume = (maxX-minX)*(maxY-minY)*(maxZ-minZ)*iInside/nStat; |
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| 236 | return volume; |
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| 237 | } |
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| 238 | |
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| 239 | //////////////////////////////////////////////////////////////// |
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| 240 | // |
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| 241 | // Returns an estimation of the solid surface area in internal units. |
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| 242 | // The number of statistics and error accuracy is fixed. |
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| 243 | // This method may be overloaded by derived classes to compute the |
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| 244 | // exact geometrical quantity for solids where this is possible. |
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| 245 | // or anyway to cache the computed value. |
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| 246 | // This implementation does NOT cache the computed value. |
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| 247 | |
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| 248 | G4double G4VSolid::GetSurfaceArea() |
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| 249 | { |
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| 250 | G4int stat = 1000000; |
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| 251 | G4double ell = -1.; |
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| 252 | return EstimateSurfaceArea(stat,ell); |
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| 253 | } |
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| 254 | |
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| 255 | //////////////////////////////////////////////////////////////// |
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| 256 | // |
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| 257 | // Estimate surface area based on Inside(), DistanceToIn(), and |
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| 258 | // DistanceToOut() methods. Accuracy is limited by the statistics |
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| 259 | // defined by the first argument. Implemented by Mikhail Kosov. |
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| 260 | |
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| 261 | G4double G4VSolid::EstimateSurfaceArea(G4int nStat, G4double ell) const |
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| 262 | { |
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| 263 | G4int inside=0; |
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| 264 | G4double px,py,pz,minX,maxX,minY,maxY,minZ,maxZ,surf; |
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| 265 | G4bool yesno; |
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| 266 | G4ThreeVector p; |
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| 267 | EInside in; |
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| 268 | |
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| 269 | // values needed for CalculateExtent signature |
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| 270 | |
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| 271 | G4VoxelLimits limit; // Unlimited |
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| 272 | G4AffineTransform origin; |
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| 273 | |
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| 274 | // min max extents of pSolid along X,Y,Z |
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| 275 | |
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| 276 | yesno = this->CalculateExtent(kXAxis,limit,origin,minX,maxX); |
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| 277 | yesno = this->CalculateExtent(kYAxis,limit,origin,minY,maxY); |
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| 278 | yesno = this->CalculateExtent(kZAxis,limit,origin,minZ,maxZ); |
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| 279 | |
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| 280 | // limits |
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| 281 | |
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| 282 | if(nStat < 100) { nStat = 100; } |
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| 283 | |
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| 284 | G4double dX=maxX-minX; |
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| 285 | G4double dY=maxY-minY; |
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| 286 | G4double dZ=maxZ-minZ; |
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| 287 | if(ell<=0.) // Automatic definition of skin thickness |
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| 288 | { |
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| 289 | G4double minval=dX; |
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| 290 | if(dY<dX) { minval=dY; } |
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| 291 | if(dZ<minval) { minval=dZ; } |
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| 292 | ell=.01*minval; |
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| 293 | } |
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| 294 | |
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| 295 | G4double dd=2*ell; |
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| 296 | minX-=ell; minY-=ell; minZ-=ell; dX+=dd; dY+=dd; dZ+=dd; |
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| 297 | |
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| 298 | for(G4int i = 0; i < nStat; i++ ) |
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| 299 | { |
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| 300 | px = minX+dX*G4UniformRand(); |
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| 301 | py = minY+dY*G4UniformRand(); |
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| 302 | pz = minZ+dZ*G4UniformRand(); |
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| 303 | p = G4ThreeVector(px,py,pz); |
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| 304 | in = this->Inside(p); |
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| 305 | if(in != kOutside) |
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| 306 | { |
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| 307 | if (DistanceToOut(p)<ell) { inside++; } |
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| 308 | } |
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| 309 | else if(DistanceToIn(p)<ell) { inside++; } |
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| 310 | } |
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| 311 | // @@ The conformal correction can be upgraded |
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| 312 | surf = dX*dY*dZ*inside/dd/nStat; |
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| 313 | return surf; |
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| 314 | } |
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| 315 | |
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[831] | 316 | /////////////////////////////////////////////////////////////////////////// |
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| 317 | // |
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[1340] | 318 | // Returns a pointer of a dynamically allocated copy of the solid. |
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| 319 | // Returns NULL pointer with warning in case the concrete solid does not |
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| 320 | // implement this method. The caller has responsibility for ownership. |
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| 321 | // |
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| 322 | |
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| 323 | G4VSolid* G4VSolid::Clone() const |
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| 324 | { |
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| 325 | G4String ErrMessage = "Clone() method not implemented for type: " |
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| 326 | + GetEntityType() + "! Returning NULL pointer!"; |
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| 327 | G4Exception("G4VSolid::Clone()", "NotImplemented", |
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| 328 | JustWarning, ErrMessage); |
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| 329 | return 0; |
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| 330 | } |
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| 331 | |
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| 332 | /////////////////////////////////////////////////////////////////////////// |
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| 333 | // |
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[831] | 334 | // Calculate the maximum and minimum extents of the polygon described |
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| 335 | // by the vertices: pSectionIndex->pSectionIndex+1-> |
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| 336 | // pSectionIndex+2->pSectionIndex+3->pSectionIndex |
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| 337 | // in the List pVertices |
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| 338 | // |
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| 339 | // If the minimum is <pMin pMin is set to the new minimum |
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| 340 | // If the maximum is >pMax pMax is set to the new maximum |
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| 341 | // |
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| 342 | // No modifications are made to pVertices |
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| 343 | // |
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| 344 | |
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| 345 | void G4VSolid::ClipCrossSection( G4ThreeVectorList* pVertices, |
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| 346 | const G4int pSectionIndex, |
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| 347 | const G4VoxelLimits& pVoxelLimit, |
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| 348 | const EAxis pAxis, |
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| 349 | G4double& pMin, G4double& pMax) const |
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| 350 | { |
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| 351 | |
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| 352 | G4ThreeVectorList polygon; |
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[921] | 353 | polygon.reserve(4); |
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[831] | 354 | polygon.push_back((*pVertices)[pSectionIndex]); |
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| 355 | polygon.push_back((*pVertices)[pSectionIndex+1]); |
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| 356 | polygon.push_back((*pVertices)[pSectionIndex+2]); |
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| 357 | polygon.push_back((*pVertices)[pSectionIndex+3]); |
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| 358 | // G4cout<<"ClipCrossSection: 0-1-2-3"<<G4endl; |
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| 359 | CalculateClippedPolygonExtent(polygon,pVoxelLimit,pAxis,pMin,pMax); |
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| 360 | return; |
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| 361 | } |
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| 362 | |
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| 363 | ////////////////////////////////////////////////////////////////////////////////// |
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| 364 | // |
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| 365 | // Calculate the maximum and minimum extents of the polygons |
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| 366 | // joining the CrossSections at pSectionIndex->pSectionIndex+3 and |
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| 367 | // pSectionIndex+4->pSectionIndex7 |
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| 368 | // |
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| 369 | // in the List pVertices, within the boundaries of the voxel limits pVoxelLimit |
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| 370 | // |
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| 371 | // If the minimum is <pMin pMin is set to the new minimum |
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| 372 | // If the maximum is >pMax pMax is set to the new maximum |
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| 373 | // |
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| 374 | // No modifications are made to pVertices |
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| 375 | |
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| 376 | void G4VSolid::ClipBetweenSections( G4ThreeVectorList* pVertices, |
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| 377 | const G4int pSectionIndex, |
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| 378 | const G4VoxelLimits& pVoxelLimit, |
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| 379 | const EAxis pAxis, |
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| 380 | G4double& pMin, G4double& pMax) const |
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| 381 | { |
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| 382 | G4ThreeVectorList polygon; |
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[921] | 383 | polygon.reserve(4); |
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[831] | 384 | polygon.push_back((*pVertices)[pSectionIndex]); |
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| 385 | polygon.push_back((*pVertices)[pSectionIndex+4]); |
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| 386 | polygon.push_back((*pVertices)[pSectionIndex+5]); |
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| 387 | polygon.push_back((*pVertices)[pSectionIndex+1]); |
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| 388 | // G4cout<<"ClipBetweenSections: 0-4-5-1"<<G4endl; |
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| 389 | CalculateClippedPolygonExtent(polygon,pVoxelLimit,pAxis,pMin,pMax); |
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| 390 | polygon.clear(); |
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| 391 | |
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| 392 | polygon.push_back((*pVertices)[pSectionIndex+1]); |
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| 393 | polygon.push_back((*pVertices)[pSectionIndex+5]); |
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| 394 | polygon.push_back((*pVertices)[pSectionIndex+6]); |
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| 395 | polygon.push_back((*pVertices)[pSectionIndex+2]); |
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| 396 | // G4cout<<"ClipBetweenSections: 1-5-6-2"<<G4endl; |
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| 397 | CalculateClippedPolygonExtent(polygon,pVoxelLimit,pAxis,pMin,pMax); |
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| 398 | polygon.clear(); |
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| 399 | |
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| 400 | polygon.push_back((*pVertices)[pSectionIndex+2]); |
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| 401 | polygon.push_back((*pVertices)[pSectionIndex+6]); |
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| 402 | polygon.push_back((*pVertices)[pSectionIndex+7]); |
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| 403 | polygon.push_back((*pVertices)[pSectionIndex+3]); |
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| 404 | // G4cout<<"ClipBetweenSections: 2-6-7-3"<<G4endl; |
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| 405 | CalculateClippedPolygonExtent(polygon,pVoxelLimit,pAxis,pMin,pMax); |
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| 406 | polygon.clear(); |
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| 407 | |
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| 408 | polygon.push_back((*pVertices)[pSectionIndex+3]); |
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| 409 | polygon.push_back((*pVertices)[pSectionIndex+7]); |
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| 410 | polygon.push_back((*pVertices)[pSectionIndex+4]); |
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| 411 | polygon.push_back((*pVertices)[pSectionIndex]); |
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| 412 | // G4cout<<"ClipBetweenSections: 3-7-4-0"<<G4endl; |
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| 413 | CalculateClippedPolygonExtent(polygon,pVoxelLimit,pAxis,pMin,pMax); |
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| 414 | return; |
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| 415 | } |
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| 416 | |
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| 417 | |
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| 418 | /////////////////////////////////////////////////////////////////////////////// |
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| 419 | // |
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| 420 | // Calculate the maximum and minimum extents of the convex polygon pPolygon |
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| 421 | // along the axis pAxis, within the limits pVoxelLimit |
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| 422 | // |
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| 423 | |
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| 424 | void |
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| 425 | G4VSolid::CalculateClippedPolygonExtent(G4ThreeVectorList& pPolygon, |
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| 426 | const G4VoxelLimits& pVoxelLimit, |
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| 427 | const EAxis pAxis, |
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| 428 | G4double& pMin, |
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| 429 | G4double& pMax) const |
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| 430 | { |
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| 431 | G4int noLeft,i; |
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| 432 | G4double component; |
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| 433 | /* |
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| 434 | G4cout<<G4endl; |
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| 435 | for(i = 0 ; i < pPolygon.size() ; i++ ) |
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| 436 | { |
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| 437 | G4cout << i << "\t" |
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| 438 | << "p.x = " << pPolygon[i].operator()(pAxis) << "\t" |
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| 439 | // << "p.y = " << pPolygon[i].y() << "\t" |
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| 440 | // << "p.z = " << pPolygon[i].z() << "\t" |
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| 441 | << G4endl; |
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| 442 | } |
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| 443 | G4cout<<G4endl; |
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| 444 | */ |
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| 445 | ClipPolygon(pPolygon,pVoxelLimit,pAxis); |
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| 446 | noLeft = pPolygon.size(); |
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| 447 | |
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| 448 | if ( noLeft ) |
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| 449 | { |
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| 450 | // G4cout<<G4endl; |
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| 451 | for (i=0;i<noLeft;i++) |
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| 452 | { |
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| 453 | component = pPolygon[i].operator()(pAxis); |
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| 454 | // G4cout <<i<<"\t"<<component<<G4endl; |
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| 455 | |
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| 456 | if (component < pMin) |
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| 457 | { |
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| 458 | // G4cout <<i<<"\t"<<"Pmin = "<<component<<G4endl; |
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| 459 | pMin = component; |
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| 460 | } |
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| 461 | if (component > pMax) |
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| 462 | { |
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| 463 | // G4cout <<i<<"\t"<<"PMax = "<<component<<G4endl; |
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| 464 | pMax = component; |
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| 465 | } |
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| 466 | } |
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| 467 | // G4cout<<G4endl; |
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| 468 | } |
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| 469 | // G4cout<<"pMin = "<<pMin<<"\t"<<"pMax = "<<pMax<<G4endl; |
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| 470 | } |
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| 471 | |
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| 472 | ///////////////////////////////////////////////////////////////////////////// |
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| 473 | // |
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| 474 | // Clip the convex polygon described by the vertices at |
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| 475 | // pSectionIndex ->pSectionIndex+3 within pVertices to the limits pVoxelLimit |
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| 476 | // |
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| 477 | // Set pMin to the smallest |
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| 478 | // |
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| 479 | // Calculate the extent of the polygon along pAxis, when clipped to the |
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| 480 | // limits pVoxelLimit. If the polygon exists after clippin, set pMin to |
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| 481 | // the polygon's minimum extent along the axis if <pMin, and set pMax to |
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| 482 | // the polygon's maximum extent along the axis if >pMax. |
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| 483 | // |
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| 484 | // The polygon is described by a set of vectors, where each vector represents |
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| 485 | // a vertex, so that the polygon is described by the vertex sequence: |
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| 486 | // 0th->1st 1st->2nd 2nd->... nth->0th |
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| 487 | // |
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| 488 | // Modifications to the polygon are made |
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| 489 | // |
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| 490 | // NOTE: Execessive copying during clipping |
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| 491 | |
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| 492 | void G4VSolid::ClipPolygon( G4ThreeVectorList& pPolygon, |
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| 493 | const G4VoxelLimits& pVoxelLimit, |
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| 494 | const EAxis ) const |
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| 495 | { |
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| 496 | G4ThreeVectorList outputPolygon; |
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| 497 | |
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| 498 | if ( pVoxelLimit.IsLimited() ) |
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| 499 | { |
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| 500 | if (pVoxelLimit.IsXLimited() ) // && pAxis != kXAxis) |
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| 501 | { |
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| 502 | G4VoxelLimits simpleLimit1; |
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| 503 | simpleLimit1.AddLimit(kXAxis,pVoxelLimit.GetMinXExtent(),kInfinity); |
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| 504 | // G4cout<<"MinXExtent()"<<G4endl; |
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| 505 | ClipPolygonToSimpleLimits(pPolygon,outputPolygon,simpleLimit1); |
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| 506 | |
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| 507 | pPolygon.clear(); |
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| 508 | |
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| 509 | if ( !outputPolygon.size() ) return; |
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| 510 | |
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| 511 | G4VoxelLimits simpleLimit2; |
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| 512 | // G4cout<<"MaxXExtent()"<<G4endl; |
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| 513 | simpleLimit2.AddLimit(kXAxis,-kInfinity,pVoxelLimit.GetMaxXExtent()); |
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| 514 | ClipPolygonToSimpleLimits(outputPolygon,pPolygon,simpleLimit2); |
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| 515 | |
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| 516 | if ( !pPolygon.size() ) return; |
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| 517 | else outputPolygon.clear(); |
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| 518 | } |
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| 519 | if ( pVoxelLimit.IsYLimited() ) // && pAxis != kYAxis) |
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| 520 | { |
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| 521 | G4VoxelLimits simpleLimit1; |
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| 522 | simpleLimit1.AddLimit(kYAxis,pVoxelLimit.GetMinYExtent(),kInfinity); |
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| 523 | ClipPolygonToSimpleLimits(pPolygon,outputPolygon,simpleLimit1); |
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| 524 | |
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| 525 | // Must always clear pPolygon - for clip to simpleLimit2 and in case of |
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| 526 | // early exit |
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| 527 | |
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| 528 | pPolygon.clear(); |
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| 529 | |
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| 530 | if ( !outputPolygon.size() ) return; |
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| 531 | |
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| 532 | G4VoxelLimits simpleLimit2; |
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| 533 | simpleLimit2.AddLimit(kYAxis,-kInfinity,pVoxelLimit.GetMaxYExtent()); |
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| 534 | ClipPolygonToSimpleLimits(outputPolygon,pPolygon,simpleLimit2); |
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| 535 | |
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| 536 | if ( !pPolygon.size() ) return; |
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| 537 | else outputPolygon.clear(); |
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| 538 | } |
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| 539 | if ( pVoxelLimit.IsZLimited() ) // && pAxis != kZAxis) |
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| 540 | { |
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| 541 | G4VoxelLimits simpleLimit1; |
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| 542 | simpleLimit1.AddLimit(kZAxis,pVoxelLimit.GetMinZExtent(),kInfinity); |
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| 543 | ClipPolygonToSimpleLimits(pPolygon,outputPolygon,simpleLimit1); |
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| 544 | |
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| 545 | // Must always clear pPolygon - for clip to simpleLimit2 and in case of |
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| 546 | // early exit |
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| 547 | |
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| 548 | pPolygon.clear(); |
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| 549 | |
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| 550 | if ( !outputPolygon.size() ) return; |
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| 551 | |
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| 552 | G4VoxelLimits simpleLimit2; |
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| 553 | simpleLimit2.AddLimit(kZAxis,-kInfinity,pVoxelLimit.GetMaxZExtent()); |
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| 554 | ClipPolygonToSimpleLimits(outputPolygon,pPolygon,simpleLimit2); |
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| 555 | |
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| 556 | // Return after final clip - no cleanup |
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| 557 | } |
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| 558 | } |
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| 559 | } |
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| 560 | |
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| 561 | //////////////////////////////////////////////////////////////////////////// |
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| 562 | // |
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| 563 | // pVoxelLimits must be only limited along one axis, and either the maximum |
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| 564 | // along the axis must be +kInfinity, or the minimum -kInfinity |
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| 565 | |
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| 566 | void |
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| 567 | G4VSolid::ClipPolygonToSimpleLimits( G4ThreeVectorList& pPolygon, |
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| 568 | G4ThreeVectorList& outputPolygon, |
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| 569 | const G4VoxelLimits& pVoxelLimit ) const |
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| 570 | { |
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| 571 | G4int i; |
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| 572 | G4int noVertices=pPolygon.size(); |
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| 573 | G4ThreeVector vEnd,vStart; |
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| 574 | |
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| 575 | for (i = 0 ; i < noVertices ; i++ ) |
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| 576 | { |
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| 577 | vStart = pPolygon[i]; |
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| 578 | // G4cout << "i = " << i << G4endl; |
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| 579 | if ( i == noVertices-1 ) vEnd = pPolygon[0]; |
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| 580 | else vEnd = pPolygon[i+1]; |
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| 581 | |
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| 582 | if ( pVoxelLimit.Inside(vStart) ) |
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| 583 | { |
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| 584 | if (pVoxelLimit.Inside(vEnd)) |
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| 585 | { |
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| 586 | // vStart and vEnd inside -> output end point |
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| 587 | // |
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| 588 | outputPolygon.push_back(vEnd); |
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| 589 | } |
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| 590 | else |
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| 591 | { |
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| 592 | // vStart inside, vEnd outside -> output crossing point |
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| 593 | // |
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| 594 | // G4cout << "vStart inside, vEnd outside" << G4endl; |
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| 595 | pVoxelLimit.ClipToLimits(vStart,vEnd); |
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| 596 | outputPolygon.push_back(vEnd); |
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| 597 | } |
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| 598 | } |
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| 599 | else |
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| 600 | { |
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| 601 | if (pVoxelLimit.Inside(vEnd)) |
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| 602 | { |
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| 603 | // vStart outside, vEnd inside -> output inside section |
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| 604 | // |
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| 605 | // G4cout << "vStart outside, vEnd inside" << G4endl; |
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| 606 | pVoxelLimit.ClipToLimits(vStart,vEnd); |
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| 607 | outputPolygon.push_back(vStart); |
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| 608 | outputPolygon.push_back(vEnd); |
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| 609 | } |
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| 610 | else // Both point outside -> no output |
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| 611 | { |
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| 612 | // outputPolygon.push_back(vStart); |
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| 613 | // outputPolygon.push_back(vEnd); |
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| 614 | } |
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| 615 | } |
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| 616 | } |
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| 617 | } |
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| 618 | |
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| 619 | G4VisExtent G4VSolid::GetExtent () const |
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| 620 | { |
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| 621 | G4VisExtent extent; |
---|
| 622 | G4VoxelLimits voxelLimits; // Defaults to "infinite" limits. |
---|
| 623 | G4AffineTransform affineTransform; |
---|
| 624 | G4double vmin, vmax; |
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| 625 | CalculateExtent(kXAxis,voxelLimits,affineTransform,vmin,vmax); |
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| 626 | extent.SetXmin (vmin); |
---|
| 627 | extent.SetXmax (vmax); |
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| 628 | CalculateExtent(kYAxis,voxelLimits,affineTransform,vmin,vmax); |
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| 629 | extent.SetYmin (vmin); |
---|
| 630 | extent.SetYmax (vmax); |
---|
| 631 | CalculateExtent(kZAxis,voxelLimits,affineTransform,vmin,vmax); |
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| 632 | extent.SetZmin (vmin); |
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| 633 | extent.SetZmax (vmax); |
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| 634 | return extent; |
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| 635 | } |
---|
| 636 | |
---|
| 637 | G4Polyhedron* G4VSolid::CreatePolyhedron () const |
---|
| 638 | { |
---|
| 639 | return 0; |
---|
| 640 | } |
---|
| 641 | |
---|
| 642 | G4NURBS* G4VSolid::CreateNURBS () const |
---|
| 643 | { |
---|
| 644 | return 0; |
---|
| 645 | } |
---|
| 646 | |
---|
| 647 | G4Polyhedron* G4VSolid::GetPolyhedron () const |
---|
| 648 | { |
---|
| 649 | return 0; |
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| 650 | } |
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