Gabriele Cosmo
224 lines
8.6 KiB
C++
224 lines
8.6 KiB
C++
//
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// ********************************************************************
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// * License and Disclaimer *
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// * *
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// * The Geant4 software is copyright of the Copyright Holders of *
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// * the Geant4 Collaboration. It is provided under the terms and *
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// * conditions of the Geant4 Software License, included in the file *
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// * LICENSE and available at http://cern.ch/geant4/license . These *
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// * include a list of copyright holders. *
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// * *
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// * Neither the authors of this software system, nor their employing *
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// * institutes,nor the agencies providing financial support for this *
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// * work make any representation or warranty, express or implied, *
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// * regarding this software system or assume any liability for its *
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// * use. Please see the license in the file LICENSE and URL above *
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// * for the full disclaimer and the limitation of liability. *
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// * *
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// * This code implementation is the result of the scientific and *
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// * technical work of the GEANT4 collaboration. *
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// * By using, copying, modifying or distributing the software (or *
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// * any work based on the software) you agree to acknowledge its *
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// * use in resulting scientific publications, and indicate your *
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// * acceptance of all terms of the Geant4 Software license. *
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// ********************************************************************
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//
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// G4GenericTrap
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//
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// Class description:
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//
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// G4GenericTrap is a solid which represents an arbitrary trapezoid with
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// up to 8 vertices standing on two parallel planes perpendicular to Z axis.
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//
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// Parameters in the constructor:
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// - name - solid name
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// - halfZ - the solid half length in Z
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// - vertices - the (x,y) coordinates of vertices:
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// o first four points: vertices[i], i<4
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// are the vertices sitting on the -halfZ plane;
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// o last four points: vertices[i], i>=4
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// are the vertices sitting on the +halfZ plane.
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//
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// The order of defining the vertices of the solid is the following:
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// - point 0 is connected with points 1,3,4
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// - point 1 is connected with points 0,2,5
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// - point 2 is connected with points 1,3,6
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// - point 3 is connected with points 0,2,7
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// - point 4 is connected with points 0,5,7
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// - point 5 is connected with points 1,4,6
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// - point 6 is connected with points 2,5,7
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// - point 7 is connected with points 3,4,6
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// Points can be identical in order to create shapes with less than
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// 8 vertices.
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// Authors:
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// Tatiana Nikitina, CERN; Ivana Hrivnacova, IPN Orsay
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// Adapted from Root Arb8 implementation, author Andrei Gheata, CERN
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// -------------------------------------------------------------------
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#ifndef G4GENERICTRAP_HH
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#define G4GENERICTRAP_HH
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#include "G4GeomTypes.hh"
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#if defined(G4GEOM_USE_USOLIDS)
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#define G4GEOM_USE_UGENERICTRAP 1
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#endif
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#if defined(G4GEOM_USE_UGENERICTRAP)
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#define G4UGenericTrap G4GenericTrap
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#include "G4UGenericTrap.hh"
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#else
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#include <vector>
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#include "globals.hh"
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#include "G4TwoVector.hh"
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#include "G4VSolid.hh"
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#include "G4TessellatedSolid.hh"
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class G4GenericTrap : public G4VSolid
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{
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public: // with description
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G4GenericTrap( const G4String& name, G4double halfZ,
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const std::vector<G4TwoVector>& vertices );
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// Constructor
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~G4GenericTrap();
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// Destructor
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// Accessors
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inline G4double GetZHalfLength() const;
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inline G4int GetNofVertices() const;
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inline G4TwoVector GetVertex(G4int index) const;
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inline const std::vector<G4TwoVector>& GetVertices() const;
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inline G4double GetTwistAngle(G4int index) const;
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inline G4bool IsTwisted() const;
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inline G4int GetVisSubdivisions() const;
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inline void SetVisSubdivisions(G4int subdiv);
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// Solid methods
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EInside Inside(const G4ThreeVector& p) const;
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G4ThreeVector SurfaceNormal(const G4ThreeVector& p) const;
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G4double DistanceToIn(const G4ThreeVector& p,
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const G4ThreeVector& v) const;
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G4double DistanceToIn(const G4ThreeVector& p) const;
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G4double DistanceToOut(const G4ThreeVector& p,
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const G4ThreeVector& v,
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const G4bool calcNorm = false,
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G4bool* validNorm = nullptr,
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G4ThreeVector* n = nullptr) const;
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G4double DistanceToOut(const G4ThreeVector& p) const;
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void BoundingLimits(G4ThreeVector& pMin, G4ThreeVector& pMax) const;
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G4bool CalculateExtent(const EAxis pAxis,
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const G4VoxelLimits& pVoxelLimit,
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const G4AffineTransform& pTransform,
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G4double& pmin, G4double& pmax) const;
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G4GeometryType GetEntityType() const;
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G4VSolid* Clone() const;
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std::ostream& StreamInfo(std::ostream& os) const;
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G4ThreeVector GetPointOnSurface() const ;
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G4double GetCubicVolume();
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G4double GetSurfaceArea();
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// Visualisation functions
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G4Polyhedron* GetPolyhedron () const;
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void DescribeYourselfTo(G4VGraphicsScene& scene) const;
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G4VisExtent GetExtent() const;
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G4Polyhedron* CreatePolyhedron() const;
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public: // without description
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G4GenericTrap(__void__&);
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// Fake default constructor for usage restricted to direct object
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// persistency for clients requiring preallocation of memory for
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// persistifiable objects.
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G4GenericTrap(const G4GenericTrap& rhs);
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G4GenericTrap& operator=(const G4GenericTrap& rhs);
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// Copy constructor and assignment operator.
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private:
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// Internal methods
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inline void SetTwistAngle(G4int index, G4double twist);
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G4bool ComputeIsTwisted() ;
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G4bool CheckOrder(const std::vector<G4TwoVector>& vertices) const;
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G4bool IsSegCrossing(const G4TwoVector& a, const G4TwoVector& b,
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const G4TwoVector& c, const G4TwoVector& d) const;
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G4bool IsSegCrossingZ(const G4TwoVector& a, const G4TwoVector& b,
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const G4TwoVector& c, const G4TwoVector& d) const;
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void ReorderVertices(std::vector<G4ThreeVector>& vertices) const;
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void ComputeBBox();
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inline G4ThreeVector GetMinimumBBox() const;
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inline G4ThreeVector GetMaximumBBox() const;
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G4VFacet* MakeDownFacet(const std::vector<G4ThreeVector>& fromVertices,
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G4int ind1, G4int ind2, G4int ind3) const;
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G4VFacet* MakeUpFacet(const std::vector<G4ThreeVector>& fromVertices,
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G4int ind1, G4int ind2, G4int ind3) const;
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G4VFacet* MakeSideFacet(const G4ThreeVector& downVertex0,
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const G4ThreeVector& downVertex1,
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const G4ThreeVector& upVertex1,
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const G4ThreeVector& upVertex0) const;
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G4TessellatedSolid* CreateTessellatedSolid() const;
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EInside InsidePolygone(const G4ThreeVector& p,
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const std::vector<G4TwoVector>& poly) const;
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G4double DistToPlane(const G4ThreeVector& p,
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const G4ThreeVector& v, const G4int ipl) const ;
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G4double DistToTriangle(const G4ThreeVector& p,
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const G4ThreeVector& v, const G4int ipl) const;
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G4ThreeVector NormalToPlane(const G4ThreeVector& p,
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const G4int ipl) const;
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G4double SafetyToFace(const G4ThreeVector& p, const G4int iseg) const;
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G4double GetLateralFaceArea(G4int iface) const;
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protected:
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mutable G4bool fRebuildPolyhedron = false;
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mutable G4Polyhedron* fpPolyhedron = nullptr;
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private:
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// static data members
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static const G4int fgkNofVertices;
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static const G4double fgkTolerance;
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G4double halfCarTolerance;
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// data members
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G4double fDz;
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std::vector<G4TwoVector> fVertices;
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G4bool fIsTwisted = false;
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G4double fTwist[4];
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G4TessellatedSolid* fTessellatedSolid = nullptr;
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G4ThreeVector fMinBBoxVector;
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G4ThreeVector fMaxBBoxVector;
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G4int fVisSubdivisions = 0;
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enum ESide {kUndef,kXY0,kXY1,kXY2,kXY3,kMZ,kPZ};
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// Codes for faces (kXY[num]=num of lateral face,kMZ= minus z face etc)
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G4double fSurfaceArea = 0.0;
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G4double fCubicVolume = 0.0;
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// Surface and Volume
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};
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#include "G4GenericTrap.icc"
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#endif
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#endif
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