Gabriele Cosmo
148 lines
4.7 KiB
C++
148 lines
4.7 KiB
C++
// This code implementation is the intellectual property of
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// the GEANT4 collaboration.
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//
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// By copying, distributing or modifying the Program (or any work
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// based on the Program) you indicate your acceptance of this statement,
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// and all its terms.
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//
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// $Id: G4Para.hh,v 1.6 2000/11/02 17:06:39 gcosmo Exp $
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// GEANT4 tag $Name: geant4-03-00 $
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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:
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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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// Access functions
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G4double GetZHalfLength() const { return fDz ; }
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G4ThreeVector GetSymAxis() const
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{
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G4double cosTheta = 1.0/sqrt(1+fTthetaCphi*fTthetaCphi +
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fTthetaSphi*fTthetaSphi) ;
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return G4ThreeVector(fTthetaCphi*cosTheta,
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fTthetaSphi*cosTheta,
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cosTheta) ;
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}
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G4double GetYHalfLength() const { return fDy ; }
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G4double GetXHalfLength() const { return fDx ; }
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G4double GetTanAlpha() const { return fTalpha ; }
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// Set functions
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void SetXHalfLength(G4double val) { fDx= val; }
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void SetYHalfLength(G4double val) { fDy= val; }
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void SetZHalfLength(G4double val) { fDz= val; }
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void SetAlpha(G4double alpha) { fTalpha= tan(alpha); }
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void SetTanAlpha(G4double val) { fTalpha= val; }
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void SetThetaAndPhi(double pTheta, double pPhi)
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{
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fTthetaCphi=tan(pTheta)*cos(pPhi);
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fTthetaSphi=tan(pTheta)*sin(pPhi);
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}
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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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// Methods
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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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// Naming method (pseudo-RTTI : run-time type identification
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G4GeometryType GetEntityType() const { return G4String("G4Para"); }
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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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protected:
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G4ThreeVectorList*
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CreateRotatedVertices(const G4AffineTransform& pTransform) const;
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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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#endif
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