Gabriele Cosmo
181 lines
6.6 KiB
C++
181 lines
6.6 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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//
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// $Id: G4Para.hh,v 1.18 2006/10/19 15:33:37 gcosmo Exp $
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// GEANT4 tag $Name: geant4-09-01 $
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//
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//
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// --------------------------------------------------------------------
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// GEANT 4 class header file
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//
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// G4Para
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//
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// Class description:
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//
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// A G4Parallepiped, essentially a box with half lengths dx,dy,dz
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// `skewed' so that there are angles theta & phi of the polar line
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// joining the faces at +-dz in z, and alpha formed by the y axis
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// and the plane joinng the centre of the faces G4Parallel to the
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// z-x plane at -dy and +dy.
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//
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// A G4Para is defined by:
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// dx,dy,dz - Half-length in x,y,z
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// alpha - Angle formed by the y axis and by the plane joining
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// the centre of the faces G4Parallel to the z-x plane
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// at -dy and +dy
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// theta - Polar angle of the line joining the centres of the
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// faces at -dz and +dz in z
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// phi - Azimuthal angle of the line joining the centres of the
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// faces at -dz and +dz in z
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// Member data:
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//
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// Note that the angles parameters are not stored - precomputed trig is
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// stored instead.
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//
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// fDx Half-length in x
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// fDy Half-length in y
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// fDz Half-length in z
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//
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// fTalpha Tan of alpha
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// fTthetaCphi Tan theta * Cos phi
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// fTthetaSphi Tan theta * Sin phi
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// History:
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// 21.3.94 P.Kent Old C++ code converted to tolerant geometry
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// 31.10.96 V.Grichine Modifications according G4Box/Tubs before to commit
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// 18.11.99 V.Grichine , kUndefined was added to ESide
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// --------------------------------------------------------------------
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#ifndef G4Para_HH
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#define G4Para_HH
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#include "G4CSGSolid.hh"
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class G4Para : public G4CSGSolid
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{
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public: // with description
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G4Para(const G4String& pName,
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G4double pDx, G4double pDy, G4double pDz,
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G4double pAlpha, G4double pTheta, G4double pPhi);
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G4Para(const G4String& pName,
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const G4ThreeVector pt[8]);
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virtual ~G4Para();
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// Accessors
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inline G4double GetZHalfLength() const;
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inline G4ThreeVector GetSymAxis() const;
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inline G4double GetYHalfLength() const;
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inline G4double GetXHalfLength() const;
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inline G4double GetTanAlpha() const;
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// Modifiers
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inline void SetXHalfLength(G4double val);
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inline void SetYHalfLength(G4double val);
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inline void SetZHalfLength(G4double val);
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inline void SetAlpha(G4double alpha);
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inline void SetTanAlpha(G4double val);
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inline void SetThetaAndPhi(double pTheta, double pPhi);
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void SetAllParameters(G4double pDx, G4double pDy, G4double pDz,
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G4double pAlpha, G4double pTheta, G4double pPhi);
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// Other methods of solid
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inline G4double GetCubicVolume();
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inline G4double GetSurfaceArea();
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void ComputeDimensions(G4VPVParameterisation* p,
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const G4int n,
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const G4VPhysicalVolume* pRep);
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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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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, const G4ThreeVector& v,
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const G4bool calcNorm=G4bool(false),
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G4bool *validNorm=0, G4ThreeVector *n=0) const;
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G4double DistanceToOut(const G4ThreeVector& p) const;
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G4GeometryType GetEntityType() const;
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G4ThreeVector GetPointOnSurface() const;
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std::ostream& StreamInfo(std::ostream& os) const;
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// Visualisation functions
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void DescribeYourselfTo (G4VGraphicsScene& scene) const;
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G4Polyhedron* CreatePolyhedron () const;
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G4NURBS* CreateNURBS () const;
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public: // without description
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G4Para(__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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protected: // without description
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G4ThreeVectorList*
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CreateRotatedVertices(const G4AffineTransform& pTransform) const;
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private:
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G4ThreeVector ApproxSurfaceNormal( const G4ThreeVector& p) const;
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// Algorithm for SurfaceNormal() following the original
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// specification for points not on the surface
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G4ThreeVector GetPointOnPlane(G4ThreeVector p0, G4ThreeVector p1,
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G4ThreeVector p2, G4ThreeVector p3,
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G4double& area) const;
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// Returns a random point on the surface of one of the faces.
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private:
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G4double fDx,fDy,fDz;
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G4double fTalpha,fTthetaCphi,fTthetaSphi;
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};
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#include "G4Para.icc"
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#endif
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