00001 // 00002 // ******************************************************************** 00003 // * License and Disclaimer * 00004 // * * 00005 // * The Geant4 software is copyright of the Copyright Holders of * 00006 // * the Geant4 Collaboration. It is provided under the terms and * 00007 // * conditions of the Geant4 Software License, included in the file * 00008 // * LICENSE and available at http://cern.ch/geant4/license . These * 00009 // * include a list of copyright holders. * 00010 // * * 00011 // * Neither the authors of this software system, nor their employing * 00012 // * institutes,nor the agencies providing financial support for this * 00013 // * work make any representation or warranty, express or implied, * 00014 // * regarding this software system or assume any liability for its * 00015 // * use. Please see the license in the file LICENSE and URL above * 00016 // * for the full disclaimer and the limitation of liability. * 00017 // * * 00018 // * This code implementation is the result of the scientific and * 00019 // * technical work of the GEANT4 collaboration. * 00020 // * By using, copying, modifying or distributing the software (or * 00021 // * any work based on the software) you agree to acknowledge its * 00022 // * use in resulting scientific publications, and indicate your * 00023 // * acceptance of all terms of the Geant4 Software license. * 00024 // ******************************************************************** 00025 // 00026 // 00027 // $Id$ 00028 // 00029 // ---------------------------------------------------------------------- 00030 // Class G4Line 00031 // 00032 // Class description: 00033 // 00034 // Definition of a generic line. 00035 00036 // Authors: J.Sulkimo, P.Urban. 00037 // Revisions by: L.Broglia, G.Cosmo. 00038 // ---------------------------------------------------------------------- 00039 #ifndef __LINE_H 00040 #define __LINE_H 00041 00042 #include "G4Curve.hh" 00043 00044 class G4Line : public G4Curve 00045 { 00046 00047 public: // with description 00048 00049 G4Line(); 00050 virtual ~G4Line(); 00051 // Constructor & destructor. 00052 00053 G4Line(const G4Line& orig); 00054 G4Line& operator=(const G4Line& right); 00055 // Copy constructor and assignment operator. 00056 00057 G4Curve* Project(const G4Transform3D& tr = G4Transform3D::Identity); 00058 // Transforms and projects the line. 00059 00060 G4bool Tangent(G4CurvePoint& cp, G4Vector3D& vec); 00061 // Returns tangent to line at a given point, if existing. 00062 // The tangent is computed from the 3D point representation. 00063 00064 inline G4double GetPMax() const; 00065 inline G4Point3D GetPoint(G4double param) const; 00066 inline G4double GetPPoint(const G4Point3D& pt) const; 00067 // Accessors methods. 00068 00069 inline G4Point3D GetPnt() const; 00070 inline G4Vector3D GetDir() const; 00071 inline void Init(const G4Point3D& pnt0, const G4Vector3D& dir0); 00072 // Get/Set for the geometric data. 00073 00074 public: // without description 00075 00076 inline G4int IntersectRay2D(const G4Ray& ray); 00077 // void IntersectRay2D(const G4Ray& ray, G4CurveRayIntersection& is); 00078 00079 protected: 00080 00081 inline void InitBounded(); 00082 00083 private: 00084 00085 // geometric data 00086 G4Point3D pnt; 00087 G4Vector3D dir; 00088 G4Vector3D invDir; // dir / |dir|^2 always 00089 G4Vector3D v; // dir / |dir| always 00090 00091 }; 00092 00093 #include "G4Line.icc" 00094 00095 #endif