Gabriele Cosmo
186 lines
5.9 KiB
C++
186 lines
5.9 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: G4Hype.hh,v 1.4 2000/11/02 16:54:48 gcosmo Exp $
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// $Original: G4Hype.hh,v 1.0 1998/06/09 16:57:50 safai 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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//
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// G4Hype
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//
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// Class description:
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//
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// This class implements in G4 the volume equivalent to the
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// HYPE volume in Geant 3.21, i.e. a tube with hyperbolic profile.
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//
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// For further informations, please read G4Hype.history and G4Hype.doc.
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//
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// An hyperbolic volume with curved sides parallel to the z-axis.
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// The Hype has a specified half-length along the z axis, about which
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// it is centred, and a given minimum and maximum radius.
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// A minimum radius of 0 signifies a filled Hype (with hyperbolical
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// inner surface). To have a filled Hype the user must specify
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// inner radius = 0 AND inner stereo angle = 0.
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//
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// The inner and outer hyperbolical surfaces can have different
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// stereo angles. A stereo angle of 0 gives a cylindrical surface.
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//
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// Member functions:
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//
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// As inherited from G4VSolid,
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//
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// G4Hype(const G4String& pName
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// const G4double innerRadius
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// const G4double outerRadius
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// const G4double innerStereo
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// const G4double outerStereo
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// const G4double halfLenZ )
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//
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// Construct an hype with the given name and dimensions.
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// The provided angles are in radians.
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//
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//
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// Protected:
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//
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// G4ThreeVectorList*
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// CreateRotatedVertices(const G4AffineTransform& pTransform) const
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//
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// Create the List of transformed vertices in the format required
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// for G4VSolid::ClipCrossSection and ClipBetweenSections.
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// Authors:
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// Ernesto Lamanna (Ernesto.Lamanna@roma1.infn.it) &
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// Francesco Safai Tehrani (Francesco.SafaiTehrani@roma1.infn.it)
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// Rome, INFN & University of Rome "La Sapienza", 9 June 1998.
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//
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// History:
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// Updated Feb 2000 D.C. Williams
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//
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// --------------------------------------------------------------------
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#ifndef G4HYPE_HH
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#define G4HYPE_HH
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#include "G4VSolid.hh"
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#include "G4ThreeVector.hh"
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class G4SolidExtentList;
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class G4ClippablePolygon;
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class G4Hype : public G4VSolid
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{
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public:
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G4Hype(const G4String &pName,
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G4double newInnerRadius,
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G4double newOuterRadius,
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G4double newInnerStereo,
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G4double newOuterStereo,
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G4double newHalfLenZ);
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virtual ~G4Hype();
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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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inline G4double GetInnerRadius () const;
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inline G4double GetOuterRadius () const;
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inline G4double GetZHalfLength () const;
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inline G4double GetInnerStereo () const;
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inline G4double GetOuterStereo () const;
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inline void SetInnerRadius (G4double newIRad);
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inline void SetOuterRadius (G4double newORad);
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inline void SetZHalfLength (G4double newHLZ);
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inline void SetInnerStereo (G4double newISte);
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inline void SetOuterStereo (G4double newOSte);
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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,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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inline G4GeometryType GetEntityType() 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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G4NURBS* CreateNURBS () const;
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protected:
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inline G4bool InnerSurfaceExists() const;
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// whether we have an inner surface or not
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static G4double ApproxDistOutside( G4double pr, G4double pz,
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G4double r0, G4double tanPhi );
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static G4double ApproxDistInside( G4double pr, G4double pz,
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G4double r0, G4double tan2Phi );
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// approximate isotropic distance to hyperbolic surface
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inline G4double HypeInnerRadius2(G4double zVal) const;
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inline G4double HypeOuterRadius2(G4double zVal) const;
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// values of hype radius at a given Z
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static G4int IntersectHype( const G4ThreeVector &p, const G4ThreeVector &v,
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G4double r2, G4double tan2Phi, G4double s[2] );
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// intersection with hyperbolic surface
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static void AddPolyToExtent( const G4ThreeVector &v0,
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const G4ThreeVector &v1,
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const G4ThreeVector &w1,
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const G4ThreeVector &w0,
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const G4VoxelLimits &voxelLimit,
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const EAxis axis,
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G4SolidExtentList &extentList );
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protected:
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G4double innerRadius;
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G4double outerRadius;
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G4double halfLenZ;
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G4double innerStereo;
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G4double outerStereo;
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// precalculated parameters, squared quantities
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G4double tanInnerStereo;
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G4double tanOuterStereo;
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G4double tanInnerStereo2; // squared tan of Inner Stereo angle
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G4double tanOuterStereo2; // squared tan of Outer Stereo angle
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G4double innerRadius2; // squared Inner Radius
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G4double outerRadius2; // squared Outer Radius
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G4double endInnerRadius2; // squared endcap Inner Radius
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G4double endOuterRadius2; // squared endcap Outer Radius
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G4double endInnerRadius; // endcap Inner Radius
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G4double endOuterRadius; // endcap Outer Radius
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// Used by distanceToOut
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enum ESide {outerFace,innerFace,leftCap, rightCap};
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};
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#include "G4Hype.icc"
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#endif
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