Geant4  10.03
G4EnclosingCylinder.hh
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27 // $Id: G4EnclosingCylinder.hh 66356 2012-12-18 09:02:32Z gcosmo $
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30 // --------------------------------------------------------------------
31 // GEANT 4 class header file
32 //
33 // G4EnclosingCylinder
34 //
35 // Class description:
36 //
37 // Definition of a utility class for quickly deciding if a point
38 // is clearly outside a polyhedra or polycone or deciding if
39 // a trajectory is clearly going to miss those shapes.
40 
41 // Author:
42 // David C. Williams (davidw@scipp.ucsc.edu)
43 // --------------------------------------------------------------------
44 #ifndef G4EnclosingCylinder_hh
45 #define G4EnclosingCylinder_hh
46 
47 #include "G4Types.hh"
48 #include "geomdefs.hh"
49 #include "G4ThreeVector.hh"
50 
51 class G4ReduciblePolygon;
52 
54 {
55  public: // with description
56 
61 
62  G4bool MustBeOutside( const G4ThreeVector &p ) const;
63  // Decide very rapidly if the point is outside the cylinder.
64  // If one is not certain, return false.
65 
66  G4bool ShouldMiss( const G4ThreeVector &p, const G4ThreeVector &v ) const;
67  // Decide very rapidly if the trajectory is going to miss the cylinder.
68  // If one is not sure, return false.
69 
70  public: // without description
71 
72  G4EnclosingCylinder(__void__&);
73  // Fake default constructor for usage restricted to direct object
74  // persistency for clients requiring preallocation of memory for
75  // persistifiable objects.
76 
77  protected:
78 
79  G4double radius; // radius of our cylinder
80  G4double zLo, zHi; // z extent
81 
82  G4bool phiIsOpen; // true if there is a phi segment
83  G4double startPhi, // for isPhiOpen==true, starting of phi segment
84  totalPhi; // for isPhiOpen==true, size of phi segment
85 
87  dx1, dy1;
89  dx2, dy2;
90 
91  G4bool concave; // true, if x/y cross section is concave
92 
93 };
94 
95 #endif
CLHEP::Hep3Vector G4ThreeVector
G4bool MustBeOutside(const G4ThreeVector &p) const
G4EnclosingCylinder(const G4ReduciblePolygon *rz, G4bool phiIsOpen, G4double startPhi, G4double totalPhi)
bool G4bool
Definition: G4Types.hh:79
double G4double
Definition: G4Types.hh:76
G4bool ShouldMiss(const G4ThreeVector &p, const G4ThreeVector &v) const