Gabriele Cosmo
115 lines
4.1 KiB
C++
115 lines
4.1 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: G4ToroidalSurface.hh,v 1.7 2006/06/29 18:41:01 gunter Exp $
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// GEANT4 tag $Name: geant4-09-01 $
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//
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// ----------------------------------------------------------------------
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// Class G4ToroidalSurface
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//
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// Class Description:
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//
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// Definition of a toroidal surface.
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// Authors: J.Sulkimo, P.Urban.
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// Revisions by: L.Broglia, G.Cosmo.
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// ----------------------------------------------------------------------
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#ifndef __G4TOROIDALSURAFCE
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#define __G4TOROIDALSURAFCE
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#include "G4FPlane.hh"
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#include "G4OsloMatrix.hh"
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class G4ToroidalSurface : public G4Surface
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{
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public: // with description
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G4ToroidalSurface();
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G4ToroidalSurface(const G4Vector3D&,
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const G4Vector3D&,
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const G4Vector3D&,
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G4double,
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G4double);
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virtual ~G4ToroidalSurface();
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// Constructors & destructor.
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inline G4String GetEntityType() const;
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// Returns type identifier of the shape.
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G4int Intersect(const G4Ray&);
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// Determines the intersection of a ray with a torus.
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// Returns 1 if the ray intersects the torus.
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void CalcBBox();
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// Computes the bounding-box.
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inline G4Vector3D GetDirection() const;
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inline G4Vector3D GetAxis() const;
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inline G4Point3D GetLocation() const;
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inline G4double GetMinRadius() const;
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inline G4double GetMaxRadius() const;
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// Accessors to geometrical data.
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G4double ClosestDistanceToPoint(const G4Point3D& x);
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// Returns the closest distance to the torus surface from a point x.
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virtual G4Vector3D SurfaceNormal(const G4Point3D& Pt) const;
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// Returns the Normal unit vector to the G4ToroidalSurface at a point Pt
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// on (or nearly on) the G4ToroidalSurface.
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inline void MultiplyPointByMatrix(G4Point3D& Base);
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inline void MultiplyVectorByMatrix(G4Vector3D& DCos);
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// Utility methods.
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private:
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G4ToroidalSurface(const G4ToroidalSurface&);
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G4ToroidalSurface& operator=(const G4ToroidalSurface&);
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// Private copy constructor and assignment operator.
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inline G4int IsZero(G4double x) const;
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G4int SolveQuartic(G4double c[], G4double s[]);
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G4int SolveCubic (G4double c[], G4double s[]);
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G4int SolveQuadric(G4double c[], G4double s[]);
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// Algorithms for solving quadratic, cubic and quartic equations.
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private:
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G4Axis2Placement3D Placement;
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G4double MinRadius;
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G4double MaxRadius;
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G4PointMatrix* TransMatrix; // transformation matrix
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G4Point3D hitpoint;
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const G4double EQN_EPS;
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};
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#include "G4ToroidalSurface.icc"
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#endif
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