Geant4 Cross Reference

Cross-Referencing   Geant4
Geant4/geometry/solids/specific/include/G4IntersectingCone.hh

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 25 //
 26 // G4IntersectingCone
 27 //
 28 // Class description:
 29 //
 30 //   Utility class which calculates the intersection
 31 //   of an arbitrary line with a fixed cone
 32 
 33 // Author: David C. Williams (davidw@scipp.ucsc.edu)
 34 // --------------------------------------------------------------------
 35 #ifndef G4INTERSECTINGCONE_HH
 36 #define G4INTERSECTINGCONE_HH
 37 
 38 #include "G4Types.hh"
 39 #include "geomdefs.hh"
 40 #include "G4ThreeVector.hh"
 41 
 42 class G4IntersectingCone
 43 {
 44   public:
 45 
 46     G4IntersectingCone( const G4double r[2], const G4double z[2] );
 47     virtual ~G4IntersectingCone();
 48   
 49     G4int LineHitsCone( const G4ThreeVector& p, const G4ThreeVector& v,
 50                               G4double* s1, G4double* s2 );
 51   
 52     G4bool HitOn( const G4double r, const G4double z );
 53   
 54     inline G4double RLo() const { return rLo; }
 55     inline G4double RHi() const { return rHi; }
 56     inline G4double ZLo() const { return zLo; }
 57     inline G4double ZHi() const { return zHi; }
 58   
 59     G4IntersectingCone(__void__&);
 60       // Fake default constructor for usage restricted to direct object
 61       // persistency for clients requiring preallocation of memory for
 62       // persistifiable objects.
 63 
 64 
 65   protected:
 66 
 67     G4double zLo, zHi,  // Z bounds of side
 68              rLo, rHi;  // R bounds of side
 69 
 70     G4bool type1 = false;    // True if cone is type 1
 71                              // (std::fabs(z1-z2)>std::fabs(r1-r2))
 72     G4double A, B;     // Cone radius parameter:
 73                        //  type 1: r = A + B*z
 74                        //  type 2: z = A + B*r
 75 
 76     G4int LineHitsCone1( const G4ThreeVector& p, const G4ThreeVector& v,
 77                                G4double* s1, G4double* s2 );
 78     G4int LineHitsCone2( const G4ThreeVector& p, const G4ThreeVector& v,
 79                                G4double* s1, G4double* s2 );
 80 };
 81 
 82 #endif
 83