| 1 | //
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| 2 | // ********************************************************************
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| 3 | // * License and Disclaimer *
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| 4 | // * *
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| 5 | // * The Geant4 software is copyright of the Copyright Holders of *
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| 6 | // * the Geant4 Collaboration. It is provided under the terms and *
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| 7 | // * conditions of the Geant4 Software License, included in the file *
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| 8 | // * LICENSE and available at http://cern.ch/geant4/license . These *
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| 9 | // * include a list of copyright holders. *
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| 10 | // * *
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| 11 | // * Neither the authors of this software system, nor their employing *
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| 12 | // * institutes,nor the agencies providing financial support for this *
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| 13 | // * work make any representation or warranty, express or implied, *
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| 14 | // * regarding this software system or assume any liability for its *
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| 15 | // * use. Please see the license in the file LICENSE and URL above *
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| 16 | // * for the full disclaimer and the limitation of liability. *
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| 17 | // * *
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| 18 | // * This code implementation is the result of the scientific and *
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| 19 | // * technical work of the GEANT4 collaboration. *
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| 20 | // * By using, copying, modifying or distributing the software (or *
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| 21 | // * any work based on the software) you agree to acknowledge its *
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| 22 | // * use in resulting scientific publications, and indicate your *
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| 23 | // * acceptance of all terms of the Geant4 Software license. *
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| 24 | // ********************************************************************
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| 25 | //
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| 26 | //
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| 27 | // $Id: G4Ellipse.hh,v 1.10 2006/06/29 18:39:16 gunter Exp $
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| 28 | // GEANT4 tag $Name: geant4-09-02-ref-02 $
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| 29 | //
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| 30 | // ----------------------------------------------------------------------
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| 31 | // Class G4Ellipse
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| 32 | //
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| 33 | // Class description:
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| 34 | //
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| 35 | // Definition of a generic ellipse curve.
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| 36 |
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| 37 | // Authors: J.Sulkimo, P.Urban.
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| 38 | // Revisions by: L.Broglia, G.Cosmo.
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| 39 | // ----------------------------------------------------------------------
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| 40 | #ifndef __ELLIPTICCURVE_H
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| 41 | #define __ELLIPTICCURVE_H
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| 42 |
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| 43 | #include "G4CircularCurve.hh"
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| 44 |
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| 45 | class G4Ellipse : public G4Conic
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| 46 | {
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| 47 |
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| 48 | public: // with description
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| 49 |
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| 50 | G4Ellipse();
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| 51 | virtual ~G4Ellipse();
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| 52 | // Constructor & destructor.
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| 53 |
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| 54 | G4Ellipse(const G4Ellipse& right);
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| 55 | G4Ellipse& operator=(const G4Ellipse& right);
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| 56 | // Copy constructor and assignment operator.
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| 57 |
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| 58 | G4Curve* Project(const G4Transform3D& tr=
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| 59 | HepGeom::Transform3D::Identity);
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| 60 | // Transforms and projects the curve.
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| 61 |
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| 62 | G4bool Tangent(G4CurvePoint& cp, G4Vector3D& v);
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| 63 | // Returns tangent to curve at a given point, if existing.
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| 64 | // The tangent is computed from the 3D point representation.
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| 65 |
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| 66 | inline G4double GetPMax() const;
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| 67 | inline G4Point3D GetPoint(G4double param) const;
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| 68 | inline G4double GetPPoint(const G4Point3D& p) const;
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| 69 | // Accessors methods.
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| 70 |
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| 71 | inline G4double GetSemiAxis1() const;
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| 72 | inline G4double GetSemiAxis2() const;
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| 73 | inline void Init(const G4Axis2Placement3D& position0,
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| 74 | G4double semiAxis10, G4double semiAxis20);
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| 75 | // Get/Set methods for the geometric data.
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| 76 |
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| 77 |
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| 78 | public:
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| 79 |
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| 80 | inline G4int IntersectRay2D(const G4Ray& ray);
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| 81 | // void IntersectRay2D(const G4Ray& ray, G4CurveRayIntersection& is);
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| 82 |
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| 83 | protected:
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| 84 |
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| 85 | void InitBounded();
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| 86 |
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| 87 | private:
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| 88 |
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| 89 | // geometric data
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| 90 |
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| 91 | G4double semiAxis1;
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| 92 | G4double semiAxis2;
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| 93 | G4double ratioAxis2Axis1;
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| 94 |
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| 95 | G4Transform3D toUnitCircle;
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| 96 |
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| 97 | G4double forTangent; // -R_1^2/R_2^2
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| 98 | };
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| 99 |
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| 100 | #include "G4Ellipse.icc"
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| 101 |
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| 102 | #endif
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