| 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: G4GenericTrap.hh,v 1.9 2010/06/11 09:42:28 gcosmo Exp $
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| 28 | // GEANT4 tag $Name: geant4-09-04-beta-01 $
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| 29 | //
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| 30 | //
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| 31 | // --------------------------------------------------------------------
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| 32 | // GEANT 4 class header file
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| 33 | //
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| 34 | //
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| 35 | // G4GenericTrap
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| 36 | //
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| 37 | // Class description:
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| 38 | //
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| 39 | // G4GenericTrap is a solid which represents an arbitrary trapezoid with
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| 40 | // up to 8 vertices standing on two parallel planes perpendicular to Z axis.
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| 41 | //
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| 42 | // Parameters in the constructor:
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| 43 | // - name - solid name
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| 44 | // - hz - the solid half length in Z
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| 45 | // - vertices - the (x,y) coordinates of vertices:
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| 46 | // o first four points: vertices[i], i<4
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| 47 | // are the vertices sitting on the -hz plane;
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| 48 | // o last four points: vertices[i], i>=4
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| 49 | // are the vertices sitting on the +hz plane.
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| 50 | //
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| 51 | // The order of defining the vertices of the solid is the following:
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| 52 | // - point 0 is connected with points 1,3,4
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| 53 | // - point 1 is connected with points 0,2,5
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| 54 | // - point 2 is connected with points 1,3,6
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| 55 | // - point 3 is connected with points 0,2,7
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| 56 | // - point 4 is connected with points 0,5,7
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| 57 | // - point 5 is connected with points 1,4,6
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| 58 | // - point 6 is connected with points 2,5,7
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| 59 | // - point 7 is connected with points 3,4,6
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| 60 | // Points can be identical in order to create shapes with less than
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| 61 | // 8 vertices.
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| 62 |
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| 63 | // Authors:
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| 64 | // Tatiana Nikitina, CERN; Ivana Hrivnacova, IPN Orsay
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| 65 | // Adapted from Root Arb8 implementation, author Andrea Gheata, CERN
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| 66 | // -------------------------------------------------------------------
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| 67 |
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| 68 | #ifndef G4GenericTrap_HH
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| 69 | #define G4GenericTrap_HH
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| 70 |
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| 71 | #include <vector>
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| 72 |
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| 73 | #include "G4TwoVector.hh"
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| 74 | #include "G4VSolid.hh"
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| 75 | #include "globals.hh"
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| 76 |
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| 77 | class G4VFacet;
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| 78 | class G4TessellatedSolid;
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| 79 |
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| 80 | class G4GenericTrap : public G4VSolid
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| 81 | {
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| 82 | public: // with description
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| 83 |
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| 84 | G4GenericTrap( const G4String& name, G4double hz,
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| 85 | const std::vector<G4TwoVector>& vertices );
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| 86 | // Constructor
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| 87 |
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| 88 | ~G4GenericTrap();
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| 89 | // Destructor
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| 90 |
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| 91 | // Accessors
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| 92 |
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| 93 | inline G4double GetZHalfLength() const;
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| 94 | inline G4int GetNofVertices() const;
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| 95 | inline G4TwoVector GetVertex(G4int index) const;
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| 96 | inline const std::vector<G4TwoVector>& GetVertices() const;
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| 97 | inline G4double GetTwistAngle(G4int index) const;
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| 98 | inline G4bool IsTwisted() const;
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| 99 | inline G4int GetVisSubdivisions() const;
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| 100 | inline void SetVisSubdivisions(G4int subdiv);
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| 101 |
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| 102 | // Solid methods
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| 103 |
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| 104 | EInside Inside(const G4ThreeVector& p) const;
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| 105 | G4ThreeVector SurfaceNormal(const G4ThreeVector& p) const;
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| 106 | G4double DistanceToIn(const G4ThreeVector& p,
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| 107 | const G4ThreeVector& v) const;
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| 108 | G4double DistanceToIn(const G4ThreeVector& p) const;
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| 109 | G4double DistanceToOut(const G4ThreeVector& p,
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| 110 | const G4ThreeVector& v,
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| 111 | const G4bool calcNorm = false,
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| 112 | G4bool *validNorm = 0,
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| 113 | G4ThreeVector *n = 0) const;
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| 114 | G4double DistanceToOut(const G4ThreeVector& p) const;
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| 115 | G4bool 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, G4double& pmax) const;
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| 119 |
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| 120 | inline G4GeometryType GetEntityType() const;
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| 121 |
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| 122 | std::ostream& StreamInfo(std::ostream& os) const;
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| 123 |
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| 124 | G4ThreeVector GetPointOnSurface() const ;
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| 125 |
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| 126 | inline G4double GetCubicVolume();
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| 127 | G4double GetSurfaceArea();
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| 128 |
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| 129 | // Visualisation functions
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| 130 |
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| 131 | G4Polyhedron* GetPolyhedron () const;
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| 132 | void DescribeYourselfTo(G4VGraphicsScene& scene) const;
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| 133 | G4VisExtent GetExtent() const;
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| 134 | G4Polyhedron* CreatePolyhedron() const;
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| 135 | G4NURBS* CreateNURBS() const;
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| 136 |
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| 137 | public: // without description
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| 138 |
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| 139 | G4GenericTrap(__void__&);
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| 140 | // Fake default constructor for usage restricted to direct object
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| 141 | // persistency for clients requiring preallocation of memory for
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| 142 | // persistifiable objects.
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| 143 |
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| 144 | private:
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| 145 |
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| 146 | // Internal methods
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| 147 |
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| 148 | inline void SetTwistAngle(G4int index, G4double twist);
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| 149 | G4bool ComputeIsTwisted() ;
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| 150 | G4bool CheckOrder(const std::vector<G4TwoVector>& vertices) const;
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| 151 | G4bool IsSegCrossing(const G4TwoVector& a, const G4TwoVector& b,
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| 152 | const G4TwoVector& c, const G4TwoVector& d) const;
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| 153 | G4ThreeVectorList* CreateRotatedVertices(const
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| 154 | G4AffineTransform& pTransform) const;
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| 155 | void ReorderVertices(std::vector<G4ThreeVector>& vertices) const;
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| 156 | void ComputeBBox();
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| 157 | inline G4ThreeVector GetMinimumBBox() const;
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| 158 | inline G4ThreeVector GetMaximumBBox() const;
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| 159 |
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| 160 | G4VFacet* MakeDownFacet(const std::vector<G4ThreeVector>& fromVertices,
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| 161 | G4int ind1, G4int ind2, G4int ind3) const;
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| 162 | G4VFacet* MakeUpFacet(const std::vector<G4ThreeVector>& fromVertices,
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| 163 | G4int ind1, G4int ind2, G4int ind3) const;
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| 164 | G4VFacet* MakeSideFacet(const G4ThreeVector& downVertex0,
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| 165 | const G4ThreeVector& downVertex1,
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| 166 | const G4ThreeVector& upVertex1,
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| 167 | const G4ThreeVector& upVertex0) const;
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| 168 | G4TessellatedSolid* CreateTessellatedSolid() const;
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| 169 |
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| 170 | EInside InsidePolygone(const G4ThreeVector& p,
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| 171 | const std::vector<G4TwoVector>& poly) const;
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| 172 | G4double DistToPlane(const G4ThreeVector& p,
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| 173 | const G4ThreeVector& v, const G4int ipl) const ;
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| 174 | G4double DistToTriangle(const G4ThreeVector& p,
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| 175 | const G4ThreeVector& v, const G4int ipl) const;
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| 176 | G4ThreeVector NormalToPlane(const G4ThreeVector& p,
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| 177 | const G4int ipl) const;
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| 178 | G4double SafetyToFace(const G4ThreeVector& p, const G4int iseg) const;
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| 179 | G4double GetFaceSurfaceArea(const G4ThreeVector& p0,
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| 180 | const G4ThreeVector& p1,
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| 181 | const G4ThreeVector& p2,
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| 182 | const G4ThreeVector& p3) const;
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| 183 | protected:
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| 184 |
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| 185 | mutable G4Polyhedron* fpPolyhedron;
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| 186 |
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| 187 | private:
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| 188 |
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| 189 | // static data members
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| 190 |
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| 191 | static const G4int fgkNofVertices;
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| 192 | static const G4double fgkTolerance;
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| 193 |
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| 194 | // data members
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| 195 |
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| 196 | G4double fDz;
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| 197 | std::vector<G4TwoVector> fVertices;
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| 198 | G4bool fIsTwisted;
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| 199 | G4double fTwist[4];
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| 200 | G4TessellatedSolid* fTessellatedSolid;
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| 201 | G4ThreeVector fMinBBoxVector;
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| 202 | G4ThreeVector fMaxBBoxVector;
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| 203 | G4int fVisSubdivisions;
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| 204 |
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| 205 | enum ESide {kUndefined,kXY0,kXY1,kXY2,kXY3,kMZ,kPZ};
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| 206 | // Codes for faces (kXY[num]=num of lateral face,kMZ= minus z face etc)
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| 207 |
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| 208 | G4double fSurfaceArea;
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| 209 | G4double fCubicVolume;
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| 210 | // Surface and Volume
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| 211 | };
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| 212 |
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| 213 | #include "G4GenericTrap.icc"
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| 214 |
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| 215 | #endif
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