[831] | 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: G4FConicalSurface.hh,v 1.13 2006/06/29 18:39:21 gunter Exp $ |
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[1228] | 28 | // GEANT4 tag $Name: geant4-09-03 $ |
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[831] | 29 | // |
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| 30 | // ---------------------------------------------------------------------- |
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| 31 | // Class G4FConicalSurface |
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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 conical surface. |
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| 36 | /* |
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| 37 | Position.axis| |
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| 38 | | |
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| 39 | -- ---|--- small_radius |
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| 40 | l | / | \ |
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| 41 | e | / | \ |
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| 42 | n | / | \ |
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| 43 | g | / | \ |
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| 44 | t | / | \ |
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| 45 | h | / | \ |
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| 46 | -- ---------|--------- large_radius |
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| 47 | Position |
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| 48 | */ |
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| 49 | |
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| 50 | // The code for G4FConicalSurface has been derived from the original |
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| 51 | // implementation in the "Gismo" package. |
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| 52 | // |
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| 53 | // Author: Alan Breakstone |
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| 54 | // Adaptation: J.Sulkimo, P.Urban. |
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| 55 | // Revisions by: L.Broglia, G.Cosmo. |
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| 56 | // ---------------------------------------------------------------------- |
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| 57 | #ifndef __FCONIC_H |
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| 58 | #define __FCONIC_H |
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| 59 | |
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| 60 | #include "G4PointRat.hh" |
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| 61 | #include "G4Axis2Placement3D.hh" |
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| 62 | #include "G4Surface.hh" |
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| 63 | |
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| 64 | class G4FConicalSurface : public G4Surface |
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| 65 | { |
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| 66 | |
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| 67 | public: // with description |
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| 68 | |
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| 69 | G4FConicalSurface(); |
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| 70 | virtual ~G4FConicalSurface(); |
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| 71 | // Default constructor and destructor. |
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| 72 | |
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| 73 | G4FConicalSurface( const G4Point3D& o, const G4Vector3D& a, |
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| 74 | G4double l, G4double sr, G4double lr ); |
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| 75 | // o : origin of the G4FConicalSurface. |
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| 76 | // a : axis of the G4FConicalSurface. |
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| 77 | // l : length of the G4FConicalSurface. |
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| 78 | // sl: small radius of the G4FConicalSurface. |
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| 79 | // lr: large radius of the G4FConicalSurface. |
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| 80 | |
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| 81 | virtual G4Vector3D SurfaceNormal( const G4Point3D& p ) const; |
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| 82 | // Returns the normal to the surface on point p. |
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| 83 | |
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| 84 | G4int Inside( const G4Vector3D& x ) const; |
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| 85 | // Returns 0 if point x is outside G4ConicalSurface, 1 if Inside. |
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| 86 | |
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| 87 | inline G4String GetEntityType() const; |
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| 88 | // Returns the type identifier. |
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| 89 | |
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| 90 | virtual const char* Name() const; |
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| 91 | // Returns the class type name. |
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| 92 | |
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| 93 | virtual void PrintOn( std::ostream& os = G4cout ) const; |
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| 94 | // Printing function. |
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| 95 | |
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| 96 | G4int operator==( const G4FConicalSurface& c ) const; |
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| 97 | // Equality operator. |
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| 98 | |
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| 99 | G4int Intersect( const G4Ray& ry ); |
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| 100 | // Counts the number of intersections of a bounded conical surface by a ray. |
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| 101 | // At first, calculates the intersections with the semi-infinite |
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| 102 | // conical surface; then, it counts the intersections within the |
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| 103 | // finite conical surface boundaries, and sets the "distance" to the |
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| 104 | // closest distance from the start point to the nearest intersection. |
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| 105 | // If the point is on the surface it returns or the intersection with |
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| 106 | // the opposite surface or kInfinity. |
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| 107 | // If no intersection is found, it sets distance = kInfinity and returns 0. |
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| 108 | |
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| 109 | void CalcBBox(); |
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| 110 | // Computes the bounding-box. |
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| 111 | |
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| 112 | virtual G4double HowNear( const G4Vector3D& x ) const; |
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| 113 | // Computes the shortest distance from the point x to the G4FConicalSurface. |
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| 114 | // The distance will always be positive. |
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| 115 | // This function works only with Cone axis equal (0,0,1) or (0,0,-1), |
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| 116 | // it projects the surface and the point on the x,z plane and computes |
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| 117 | // the distance in analytical way. |
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| 118 | |
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| 119 | virtual G4int WithinBoundary( const G4Vector3D& x ) const; |
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| 120 | // Returns 1 if the point x is within the boundary, returns 0 otherwise. |
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| 121 | |
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| 122 | virtual G4double Scale() const; |
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| 123 | // Returns the size of a G4FConicalSurface. |
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| 124 | // Used for Scale-invariant tests of surface thickness. |
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| 125 | // If the small radius is zero, returns the large radius. |
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| 126 | |
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| 127 | virtual G4double Area() const; |
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| 128 | // Calculates the area of a G4FConicalSurface. |
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| 129 | |
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| 130 | virtual void resize( G4double l, G4double sr, G4double lr ); |
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| 131 | // Changes the radii and length of the G4FConicalSurface. |
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| 132 | // - l (input) argument: the new length |
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| 133 | // - sr (input) argument: the new small radius |
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| 134 | // - lr (input) argument: the new large radius |
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| 135 | |
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| 136 | |
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| 137 | inline G4double GetLength() const; |
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| 138 | inline G4double GetSmallRadius() const; |
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| 139 | inline G4double GetLargeRadius() const; |
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| 140 | inline G4double GetTan_Angle() const; |
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| 141 | // Accessors to dimensions of the G4FConicalSurface. |
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| 142 | |
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| 143 | protected: |
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| 144 | |
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| 145 | G4double length; |
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| 146 | // length of G4FConicalSurface |
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| 147 | |
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| 148 | G4double small_radius; |
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| 149 | // small radius of G4FConicalSurface, can be zero |
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| 150 | G4double large_radius; |
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| 151 | // large radius of G4FConicalSurface, must be greater than the small |
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| 152 | // radius. Note that the angle of the G4ConicalSurface is calculated |
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| 153 | // from these three quantities. |
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| 154 | |
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| 155 | G4Axis2Placement3D Position; |
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| 156 | G4double tan_angle; |
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| 157 | |
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| 158 | private: |
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| 159 | |
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| 160 | G4FConicalSurface(const G4FConicalSurface&); |
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| 161 | G4FConicalSurface& operator=(const G4FConicalSurface&); |
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| 162 | // Private copy constructor and assignment operator. |
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| 163 | |
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| 164 | }; |
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| 165 | |
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| 166 | #include "G4FConicalSurface.icc" |
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| 167 | |
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| 168 | #endif |
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