| 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: G4PhysicsLogVector.hh,v 1.13 2008/09/22 08:26:33 gcosmo Exp $
|
|---|
| 28 | // GEANT4 tag $Name: geant4-09-02-ref-02 $
|
|---|
| 29 | //
|
|---|
| 30 | //
|
|---|
| 31 | //--------------------------------------------------------------------
|
|---|
| 32 | // GEANT 4 class header file
|
|---|
| 33 | //
|
|---|
| 34 | // G4PhysicsLogVector.hh
|
|---|
| 35 | //
|
|---|
| 36 | // Class description:
|
|---|
| 37 | //
|
|---|
| 38 | // A physics vector which has values of energy-loss, cross-section,
|
|---|
| 39 | // and other physics values of a particle in matter in a given
|
|---|
| 40 | // range of the energy, momentum, etc. The scale of energy/momentum
|
|---|
| 41 | // bins is in logarithmic.
|
|---|
| 42 |
|
|---|
| 43 | // History:
|
|---|
| 44 | // 02 Dec. 1995, G.Cosmo : Structure created based on object model
|
|---|
| 45 | // 03 Mar. 1996, K.Amako : Implemented the 1st version
|
|---|
| 46 | // 27 Apr. 1996, K.Amako : Cache mechanism added
|
|---|
| 47 | // 01 Jul. 1996, K.Amako : Hidden bin from the user introduced
|
|---|
| 48 | // 26 Sep. 1996, K.Amako : Constructor with only 'bin size' added
|
|---|
| 49 | // 11 Nov. 2000, H.Kurashige : Use STL vector for dataVector and binVector
|
|---|
| 50 | //
|
|---|
| 51 | //--------------------------------------------------------------------
|
|---|
| 52 |
|
|---|
| 53 | #ifndef G4PhysicsLogVector_h
|
|---|
| 54 | #define G4PhysicsLogVector_h 1
|
|---|
| 55 |
|
|---|
| 56 | #include "globals.hh"
|
|---|
| 57 | #include "G4PhysicsVector.hh"
|
|---|
| 58 |
|
|---|
| 59 | class G4PhysicsLogVector : public G4PhysicsVector
|
|---|
| 60 | {
|
|---|
| 61 | public:
|
|---|
| 62 |
|
|---|
| 63 | G4PhysicsLogVector();
|
|---|
| 64 | explicit G4PhysicsLogVector(size_t theNbin);
|
|---|
| 65 | // Constructors
|
|---|
| 66 |
|
|---|
| 67 |
|
|---|
| 68 | public: // with description
|
|---|
| 69 |
|
|---|
| 70 | G4PhysicsLogVector(G4double theEmin, G4double theEmax, size_t theNbin);
|
|---|
| 71 | // Because of logarithmic scale, note that 'theEmin' has to be
|
|---|
| 72 | // greater than zero. No protection exists against this error.
|
|---|
| 73 |
|
|---|
| 74 | ~G4PhysicsLogVector();
|
|---|
| 75 | // Destructor
|
|---|
| 76 |
|
|---|
| 77 | G4PhysicsLogVector(const G4PhysicsLogVector&);
|
|---|
| 78 | G4PhysicsLogVector& operator=(const G4PhysicsLogVector&);
|
|---|
| 79 | // Copy constructor and assignment operator.
|
|---|
| 80 |
|
|---|
| 81 | G4bool Retrieve(std::ifstream& fIn, G4bool ascii);
|
|---|
| 82 | // To retrieve persistent data from file stream.
|
|---|
| 83 |
|
|---|
| 84 | protected:
|
|---|
| 85 |
|
|---|
| 86 | size_t FindBinLocation(G4double theEnergy) const;
|
|---|
| 87 | // Find bin# in which theEnergy belongs - pure virtual function
|
|---|
| 88 |
|
|---|
| 89 | private:
|
|---|
| 90 |
|
|---|
| 91 | G4double dBin; // Bin width - useful only for fixed binning
|
|---|
| 92 | G4double baseBin; // Set this in constructor for performance
|
|---|
| 93 |
|
|---|
| 94 | };
|
|---|
| 95 |
|
|---|
| 96 |
|
|---|
| 97 | inline
|
|---|
| 98 | size_t G4PhysicsLogVector::FindBinLocation(G4double theEnergy) const
|
|---|
| 99 | {
|
|---|
| 100 | // For G4PhysicsLogVector, FindBinLocation is implemented using
|
|---|
| 101 | // a simple arithmetic calculation.
|
|---|
| 102 | //
|
|---|
| 103 | // Because this is a virtual function, it is accessed through a
|
|---|
| 104 | // pointer to the G4PhyiscsVector object for most usages. In this
|
|---|
| 105 | // case, 'inline' will not be invoked. However, there is a possibility
|
|---|
| 106 | // that the user access to the G4PhysicsLogVector object directly and
|
|---|
| 107 | // not through pointers or references. In this case, the 'inline' will
|
|---|
| 108 | // be invoked. (See R.B.Murray, "C++ Strategies and Tactics", Chap.6.6)
|
|---|
| 109 |
|
|---|
| 110 | return size_t( std::log10(theEnergy)/dBin - baseBin );
|
|---|
| 111 | }
|
|---|
| 112 |
|
|---|
| 113 | #endif
|
|---|
