[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: G4CircularCurve.cc,v 1.10 2006/06/29 18:41:52 gunter Exp $ |
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[1228] | 28 | // GEANT4 tag $Name: geant4-09-03 $ |
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[831] | 29 | // |
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| 30 | // ---------------------------------------------------------------------- |
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| 31 | // GEANT 4 class source file |
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| 32 | // |
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| 33 | // G4CircularCurve.cc |
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| 34 | // |
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| 35 | // ---------------------------------------------------------------------- |
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| 36 | |
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| 37 | #include "G4CircularCurve.hh" |
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| 38 | #include "G4Ellipse.hh" |
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| 39 | |
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| 40 | // G4CircularCurve |
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| 41 | G4CircularCurve::G4CircularCurve() {} |
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| 42 | G4CircularCurve::~G4CircularCurve() {} |
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| 43 | |
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| 44 | G4CircularCurve::G4CircularCurve(const G4CircularCurve& right) |
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| 45 | : G4Conic(), radius(right.radius) |
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| 46 | { |
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| 47 | pShift = right.pShift; |
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| 48 | position = right.position; |
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| 49 | bBox = right.bBox; |
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| 50 | start = right.start; |
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| 51 | end = right.end; |
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| 52 | pStart = right.pStart; |
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| 53 | pEnd = right.pEnd; |
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| 54 | pRange = right.pRange; |
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| 55 | bounded = right.bounded; |
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| 56 | sameSense = right.sameSense; |
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| 57 | } |
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| 58 | |
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| 59 | G4CircularCurve& |
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| 60 | G4CircularCurve::operator=(const G4CircularCurve& right) |
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| 61 | { |
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| 62 | if (&right == this) return *this; |
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| 63 | |
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| 64 | radius = right.radius; |
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| 65 | pShift = right.pShift; |
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| 66 | position = right.position; |
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| 67 | bBox = right.bBox; |
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| 68 | start = right.start; |
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| 69 | end = right.end; |
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| 70 | pStart = right.pStart; |
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| 71 | pEnd = right.pEnd; |
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| 72 | pRange = right.pRange; |
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| 73 | bounded = right.bounded; |
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| 74 | sameSense = right.sameSense; |
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| 75 | |
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| 76 | return *this; |
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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 | void G4CircularCurve::InitBounded() |
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| 82 | { |
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| 83 | // the bbox must include the start and endpoints as well as the |
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| 84 | // extreme points if they lie on the curve |
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| 85 | bBox.Init(GetStart(), GetEnd()); |
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| 86 | |
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| 87 | // the parameter values |
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| 88 | // belonging to the points with an extreme x, y and z coordinate |
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| 89 | for (G4int i=0; i<3; i++) |
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| 90 | { |
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| 91 | G4double u = std::atan2(position.GetPY()(i), position.GetPX()(i)); |
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| 92 | |
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| 93 | if (IsPOn(u)) |
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| 94 | bBox.Extend(GetPoint(u)); |
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| 95 | |
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| 96 | if (IsPOn(u+pi)) |
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| 97 | bBox.Extend(GetPoint(u+pi)); |
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| 98 | } |
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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 | G4Curve* G4CircularCurve::Project(const G4Transform3D& tr) |
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| 104 | { |
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| 105 | G4Ellipse e; |
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| 106 | e.Init(position, radius, radius); |
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| 107 | e.SetBounds(GetPStart(), GetPEnd()); |
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| 108 | |
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| 109 | return e.Project(tr); |
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| 110 | } |
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| 111 | |
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| 112 | ////////////////////////////////////////////////////////////////////////////// |
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| 113 | |
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| 114 | G4bool G4CircularCurve::Tangent(G4CurvePoint& cp, G4Vector3D& v) |
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| 115 | { |
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| 116 | // The tangent is computed from the 3D point representation |
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| 117 | // for all conics. An alternaive implementation (based on |
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| 118 | // the parametric point) might be worthwhile adding |
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| 119 | // for efficiency. |
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| 120 | |
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| 121 | const G4Axis2Placement3D& pos= *(GetPosition()); |
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| 122 | G4Point3D p= pos.GetToPlacementCoordinates() * cp.GetPoint(); |
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| 123 | |
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| 124 | v= -p.y()*pos.GetPX() + p.x()*pos.GetPY(); |
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| 125 | return true; |
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| 126 | } |
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| 127 | |
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| 128 | G4double G4CircularCurve::GetPMax() const |
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| 129 | { |
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| 130 | return twopi; |
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| 131 | } |
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| 132 | |
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| 133 | G4Point3D G4CircularCurve::GetPoint(G4double param) const |
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| 134 | { |
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| 135 | return G4Point3D( position.GetLocation()+radius* |
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| 136 | ( std::cos(param)*position.GetPX() + std::sin(param)*position.GetPY() ) ); |
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| 137 | } |
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| 138 | |
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| 139 | G4double G4CircularCurve::GetPPoint(const G4Point3D& pt) const |
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| 140 | { |
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| 141 | G4Point3D ptLocal= position.GetToPlacementCoordinates()*pt; |
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| 142 | G4double angle= std::atan2(ptLocal.y(), ptLocal.x()); |
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| 143 | return (angle<0)? angle+twopi: angle; |
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| 144 | } |
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| 145 | |
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| 146 | //////////////////////////////////////////////////////////////////////////// |
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| 147 | |
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| 148 | /* |
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| 149 | #include "G4CurveRayIntersection.hh" |
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| 150 | |
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| 151 | void G4CircularCurve::IntersectRay2D(const G4Ray&, |
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| 152 | G4CurveRayIntersection&) |
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| 153 | { |
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| 154 | G4Exception("G4CircularCurve::IntersectRay2D()", |
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| 155 | "NotApplicable", FatalException, |
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| 156 | "G4CircularCurve is always 3D!"); |
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| 157 | } |
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| 158 | */ |
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| 159 | |
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| 160 | G4int G4CircularCurve::IntersectRay2D(const G4Ray&) |
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| 161 | { |
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| 162 | G4Exception("G4CircularCurve::IntersectRay2D()", |
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| 163 | "NotApplicable", FatalException, |
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| 164 | "G4CircularCurve is always 3D!"); |
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| 165 | return 0; |
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| 166 | } |
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