Geant4  10.00.p03
G4EnclosingCylinder.hh
Go to the documentation of this file.
1 //
2 // ********************************************************************
3 // * License and Disclaimer *
4 // * *
5 // * The Geant4 software is copyright of the Copyright Holders of *
6 // * the Geant4 Collaboration. It is provided under the terms and *
7 // * conditions of the Geant4 Software License, included in the file *
8 // * LICENSE and available at http://cern.ch/geant4/license . These *
9 // * include a list of copyright holders. *
10 // * *
11 // * Neither the authors of this software system, nor their employing *
12 // * institutes,nor the agencies providing financial support for this *
13 // * work make any representation or warranty, express or implied, *
14 // * regarding this software system or assume any liability for its *
15 // * use. Please see the license in the file LICENSE and URL above *
16 // * for the full disclaimer and the limitation of liability. *
17 // * *
18 // * This code implementation is the result of the scientific and *
19 // * technical work of the GEANT4 collaboration. *
20 // * By using, copying, modifying or distributing the software (or *
21 // * any work based on the software) you agree to acknowledge its *
22 // * use in resulting scientific publications, and indicate your *
23 // * acceptance of all terms of the Geant4 Software license. *
24 // ********************************************************************
25 //
26 //
27 // $Id: G4EnclosingCylinder.hh 66356 2012-12-18 09:02:32Z gcosmo $
28 //
29 //
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