| [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: G4EnclosingCylinder.hh,v 1.8 2006/06/29 18:46:58 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 | // --------------------------------------------------------------------
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| 32 | // GEANT 4 class header file
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| 33 | //
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| 34 | // G4EnclosingCylinder
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| 35 | //
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| 36 | // Class description:
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| 37 | //
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| 38 | // Definition of a utility class for quickly deciding if a point
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| 39 | // is clearly outside a polyhedra or polycone or deciding if
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| 40 | // a trajectory is clearly going to miss those shapes.
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| 41 |
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| 42 | // Author:
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| 43 | // David C. Williams (davidw@scipp.ucsc.edu)
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| 44 | // --------------------------------------------------------------------
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| 45 | #ifndef G4EnclosingCylinder_hh
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| 46 | #define G4EnclosingCylinder_hh
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| 47 |
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| 48 | #include "G4Types.hh"
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| 49 | #include "geomdefs.hh"
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| 50 | #include "G4ThreeVector.hh"
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| 51 |
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| 52 | class G4ReduciblePolygon;
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| 53 |
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| 54 | class G4EnclosingCylinder
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| 55 | {
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| 56 | public: // with description
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| 57 |
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| 58 | G4EnclosingCylinder( const G4ReduciblePolygon *rz,
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| 59 | G4bool phiIsOpen,
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| 60 | G4double startPhi, G4double totalPhi );
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| 61 | ~G4EnclosingCylinder();
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| 62 |
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| 63 | G4bool MustBeOutside( const G4ThreeVector &p ) const;
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| 64 | // Decide very rapidly if the point is outside the cylinder.
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| 65 | // If one is not certain, return false.
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| 66 |
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| 67 | G4bool ShouldMiss( const G4ThreeVector &p, const G4ThreeVector &v ) const;
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| 68 | // Decide very rapidly if the trajectory is going to miss the cylinder.
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| 69 | // If one is not sure, return false.
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| 70 |
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| 71 | public: // without description
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| 72 |
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| 73 | G4EnclosingCylinder(__void__&);
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| 74 | // Fake default constructor for usage restricted to direct object
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| 75 | // persistency for clients requiring preallocation of memory for
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| 76 | // persistifiable objects.
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| 77 |
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| 78 | protected:
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| 79 |
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| 80 | G4double radius; // radius of our cylinder
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| 81 | G4double zLo, zHi; // z extent
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| 82 |
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| 83 | G4bool phiIsOpen; // true if there is a phi segment
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| 84 | G4double startPhi, // for isPhiOpen==true, starting of phi segment
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| 85 | totalPhi; // for isPhiOpen==true, size of phi segment
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| 86 |
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| 87 | G4double rx1, ry1,
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| 88 | dx1, dy1;
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| 89 | G4double rx2, ry2,
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| 90 | dx2, dy2;
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| 91 |
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| 92 | G4bool concave; // true, if x/y cross section is concave
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| 93 |
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| 94 | };
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| 95 |
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| 96 | #endif
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