[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: G4SphericalSurface.hh,v 1.10 2006/06/29 18:40:36 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 G4SphericalSurface |
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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 spherical surface. |
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| 36 | |
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| 37 | // The code for G4SphericalSurface has been derived from the original |
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| 38 | // implementation in the "Gismo" package. |
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| 39 | // |
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| 40 | // Authors: L.Lim, A.Breakstone. |
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| 41 | // Adaptation: J.Sulkimo, P.Urban. |
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| 42 | // Revisions by: L.Broglia, G.Cosmo. |
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| 43 | // ---------------------------------------------------------------------- |
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| 44 | #ifndef __G4SpheShell_H |
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| 45 | #define __G4SpheShell_H |
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| 46 | |
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| 47 | #include "G4Surface.hh" |
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| 48 | #include "G4ThreeMat.hh" |
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| 49 | |
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| 50 | class G4SphericalSurface : public G4Surface |
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| 51 | { |
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| 52 | |
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| 53 | public: // with description |
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| 54 | |
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| 55 | G4SphericalSurface(); |
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| 56 | // Default constructor. |
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| 57 | |
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| 58 | G4SphericalSurface( const G4Vector3D& o, |
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| 59 | const G4Vector3D& xhat, const G4Vector3D& zhat, |
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| 60 | G4double r, |
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| 61 | G4double ph1, G4double ph2, |
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| 62 | G4double th1, G4double th2 ); |
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| 63 | // Normal constructor: |
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| 64 | // first argument is the origin of the G4SphericalSurface |
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| 65 | // second argument is the axis of the G4SphericalSurface |
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| 66 | // which defines azimuthal angle equals zero |
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| 67 | // third argument is the axis of the G4SphericalSurface |
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| 68 | // which defines polar angle equals zero |
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| 69 | // fourth argument is the radius of the G4SphericalSurface |
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| 70 | // fifth argument is the lower azimuthal angle limit of the surface |
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| 71 | // sixth argument is the upper azimuthal angle limit of the surface |
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| 72 | // seventh argument is the lower polar angle limit of the surface |
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| 73 | // eigth argument is the upper polar angle limit of the surface |
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| 74 | |
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| 75 | virtual ~G4SphericalSurface(); |
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| 76 | // Destructor. |
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| 77 | |
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| 78 | inline G4int operator==( const G4SphericalSurface& s ); |
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| 79 | // Equality operator. |
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| 80 | |
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| 81 | inline G4String GetEntityType() const; |
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| 82 | // Returns the type identifier. |
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| 83 | |
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| 84 | virtual const char* NameOf() const; |
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| 85 | // Returns the class name. |
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| 86 | |
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| 87 | virtual void PrintOn( std::ostream& os = G4cout ) const; |
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| 88 | // Printing function, streaming surface's attributes. |
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| 89 | |
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| 90 | G4int Intersect(const G4Ray&); |
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| 91 | // Returns the distance along a Ray (straight line with G4Vector3D) to |
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| 92 | // leave or enter a G4SphericalSurface. |
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| 93 | // If the G4Vector3D of the Ray is opposite to that of the Normal to |
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| 94 | // the G4SphericalSurface at the intersection point, it will not leave the |
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| 95 | // G4SphericalSurface. |
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| 96 | // Similarly, if the G4Vector3D of the Ray is along that of the Normal |
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| 97 | // to the G4SphericalSurface at the intersection point, it will not enter |
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| 98 | // the G4SphericalSurface. |
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| 99 | // This method is called by all finite shapes sub-classed to |
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| 100 | // G4SphericalSurface. |
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| 101 | // A negative result means no intersection. |
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| 102 | // If no valid intersection point is found, set the distance |
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| 103 | // and intersection point to large numbers. |
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| 104 | |
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| 105 | void CalcBBox(); |
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| 106 | // Computes the bounding-box. |
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| 107 | |
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| 108 | inline void Comp(G4Vector3D& v, G4Point3D& min , G4Point3D& max); |
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| 109 | // Compares the x,y and z values of v and min |
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| 110 | // versus v and max. min/max-values are replaced if |
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| 111 | // greater/smaller than v-values. |
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| 112 | |
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| 113 | virtual G4double HowNear( const G4Vector3D& x ) const; |
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| 114 | // Returns the distance from a point to a G4SphericalSurface |
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| 115 | // The point x is the (input) argument. |
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| 116 | // The distance is positive if the point is Inside, negative if it |
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| 117 | // is outside |
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| 118 | |
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| 119 | virtual G4Vector3D SurfaceNormal( const G4Point3D& p ) const; |
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| 120 | // Returns the Normal unit vector to the G4SphericalSurface at a point p |
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| 121 | // on (or nearly on) the G4SphericalSurface. |
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| 122 | |
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| 123 | virtual G4int Inside( const G4Vector3D& x ) const; |
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| 124 | // Returns 1 if the point x is Inside the G4SphericalSurface, 0 otherwise. |
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| 125 | |
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| 126 | virtual G4int WithinBoundary( const G4Vector3D& x ) const; |
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| 127 | // Returns 1 if the point x is within the boundary, 0 otherwise. |
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| 128 | |
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| 129 | virtual G4double Scale() const; |
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| 130 | // Returns the radius, unless it is zero, in which case it |
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| 131 | // returns 1. Used for Scale-invariant tests of surface thickness. |
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| 132 | |
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| 133 | virtual G4double Area() const; |
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| 134 | // Calculates the area of a G4SphericalSurface. |
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| 135 | |
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| 136 | virtual void resize( G4double r, G4double ph1, G4double ph2, |
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| 137 | G4double th1, G4double th2); |
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| 138 | // Resizes the G4SphericalSurface to new radius and angle limits. |
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| 139 | // first argument is the radius of the G4SphericalSurface |
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| 140 | // second argument is the lower azimuthal angle limit of the surface |
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| 141 | // third argument is the upper azimuthal angle limit of the surface |
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| 142 | // fourth argument is the lower polar angle limit of the surface |
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| 143 | // fifth argument is the upper polar angle limit of the surface |
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| 144 | |
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| 145 | inline G4Vector3D GetXAxis() const; |
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| 146 | inline G4Vector3D GetZAxis() const; |
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| 147 | inline G4double GetRadius() const; |
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| 148 | inline G4double GetPhi1() const; |
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| 149 | inline G4double GetPhi2() const; |
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| 150 | inline G4double GetTheta1() const; |
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| 151 | inline G4double GetTheta2() const; |
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| 152 | // Accessors methodss to return the axes, radius, and angles |
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| 153 | // of the G4SphericalSurface. |
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| 154 | |
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| 155 | public: // without description |
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| 156 | |
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| 157 | virtual G4Vector3D Normal( const G4Vector3D& p ) const; |
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| 158 | // Returns the Normal unit vector as for SurfaceNormal(). |
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| 159 | |
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| 160 | /* |
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| 161 | virtual G4double distanceAlongRay( G4int which_way, const G4Ray* ry, |
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| 162 | G4ThreeVec& p ) const; |
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| 163 | // Returns the distance along a Ray to enter or leave a G4SphericalSurface. |
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| 164 | // The first (input) argument is +1 to leave or -1 to enter |
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| 165 | // The second (input) argument is a pointer to the Ray |
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| 166 | // The third (output) argument returns the intersection point. |
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| 167 | |
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| 168 | virtual G4double distanceAlongHelix( G4int which_way, const Helix* hx, |
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| 169 | G4ThreeVec& p ) const; |
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| 170 | // Returns the distance along a Helix to enter or leave a G4SphericalSurface. |
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| 171 | // The first (input) argument is +1 to leave or -1 to enter |
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| 172 | // The second (input) argument is a pointer to the Helix |
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| 173 | // The third (output) argument returns the intersection point. |
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| 174 | |
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| 175 | virtual G4Vector3D Normal( const G4Point3D& p ) const; |
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| 176 | // Returns the Normal unit vector to a G4SphericalSurface at a point p |
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| 177 | // on (or nearly on) the G4SphericalSurface. |
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| 178 | |
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| 179 | virtual void rotate( G4double alpha, G4double beta, |
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| 180 | G4double gamma, G4ThreeMat& m, G4int inverse ); |
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| 181 | // Rotates the G4SphericalSurface (angles are assumed to be given in |
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| 182 | // radians), arguments: |
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| 183 | // - first about global x_axis by angle alpha, |
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| 184 | // - second about global y-axis by angle beta, |
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| 185 | // - third about global z_axis by angle gamma, |
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| 186 | // - fourth (output) argument gives the calculated rotation matrix, |
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| 187 | // - fifth (input) argument is an integer flag which if |
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| 188 | // non-zero reverses the order of the rotations. |
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| 189 | |
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| 190 | virtual void rotate( G4double alpha, G4double beta, |
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| 191 | G4double gamma, G4int inverse ); |
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| 192 | // Rotates the G4SphericalSurface (angles are assumed to be given in |
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| 193 | // radians), arguments: |
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| 194 | // - first about global x_axis by angle alpha, |
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| 195 | // - second about global y-axis by angle beta, |
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| 196 | // - third about global z_axis by angle gamma, |
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| 197 | // - fourth (input) argument is an integer flag which if |
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| 198 | // non-zero reverses the order of the rotations. |
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| 199 | */ |
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| 200 | |
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| 201 | protected: // with description |
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| 202 | |
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| 203 | G4Vector3D x_axis; |
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| 204 | // Direction (unit vector) of axis of G4SphericalSurface |
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| 205 | // which defines azimuthal angle of zero. |
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| 206 | |
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| 207 | G4Vector3D z_axis; |
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| 208 | // Direction (unit vector) of axis of G4SphericalSurface |
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| 209 | // which defines polar angle of zero. |
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| 210 | |
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| 211 | G4double radius; |
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| 212 | // Radius of G4SphericalSurface. |
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| 213 | |
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| 214 | G4double phi_1; |
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| 215 | // Lower azimuthal angle limit of G4SphericalSurface |
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| 216 | // (in radians). Allowed range: 0 <= phi_1 < 2*PI. |
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| 217 | |
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| 218 | G4double phi_2; |
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| 219 | // Upper azimuthal angle limit of G4SphericalSurface |
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| 220 | // (in radians). Allowed range: phi_1 < phi_2 <= phi_1 + 2*PI |
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| 221 | |
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| 222 | G4double theta_1; |
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| 223 | // Lower polar angle limit of G4SphericalSurface |
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| 224 | // (in radians). Allowed range: 0 <= theta_1 < PI. |
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| 225 | |
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| 226 | G4double theta_2; |
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| 227 | // Upper polar angle limit of G4SphericalSurface |
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| 228 | // (in radians). Allowed range: theta_1 < theta_2 <= theta_1 + PI. |
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| 229 | |
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| 230 | private: |
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| 231 | |
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| 232 | G4SphericalSurface(const G4SphericalSurface&); |
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| 233 | G4SphericalSurface& operator=(const G4SphericalSurface&); |
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| 234 | // Private copy constructor and assignment operator. |
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| 235 | |
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| 236 | // virtual G4double gropeAlongHelix( const Helix* hx ) const; |
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| 237 | // Private function to use a crude technique to find the intersection |
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| 238 | // of a Helix with a G4SphericalSurface. It returns the turning angle |
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| 239 | // along the Helix at which the intersection occurs or -1.0 if no |
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| 240 | // intersection point is found. The argument to the call is the pointer |
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| 241 | // to the Helix. |
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| 242 | |
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| 243 | }; |
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| 244 | |
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| 245 | #include "G4SphericalSurface.icc" |
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| 246 | |
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| 247 | #endif |
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