Gabriele Cosmo
205 lines
7.2 KiB
C++
205 lines
7.2 KiB
C++
//
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// ********************************************************************
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// * License and Disclaimer *
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// * *
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// * The Geant4 software is copyright of the Copyright Holders of *
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// * the Geant4 Collaboration. It is provided under the terms and *
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// * conditions of the Geant4 Software License, included in the file *
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// * LICENSE and available at http://cern.ch/geant4/license . These *
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// * include a list of copyright holders. *
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// * *
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// * Neither the authors of this software system, nor their employing *
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// * institutes,nor the agencies providing financial support for this *
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// * work make any representation or warranty, express or implied, *
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// * regarding this software system or assume any liability for its *
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// * use. Please see the license in the file LICENSE and URL above *
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// * for the full disclaimer and the limitation of liability. *
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// * *
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// * This code implementation is the result of the scientific and *
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// * technical work of the GEANT4 collaboration. *
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// * By using, copying, modifying or distributing the software (or *
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// * any work based on the software) you agree to acknowledge its *
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// * use in resulting scientific publications, and indicate your *
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// * acceptance of all terms of the Geant4 Software license. *
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// ********************************************************************
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//
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// G4SPSRandomGenerator
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//
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// Class Description:
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//
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// Special random number generator used by G4GeneralParticleSource to allow
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// biasing applied at the lowest level for all distributions.
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// This is a shared class between threads.
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// Only one thread should use the set-methods here.
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// Note that this is exactly what is achieved using UI commands.
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// If you use the set methods to set defaults in your
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// application take care that only one thread is executing them.
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// In addition take care of calling these methods before the run is started
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// Do not use the setters during the event loop
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// Author: Fan Lei, QinetiQ ltd.
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// Customer: ESA/ESTEC
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// History:
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// - 05/02/2004, Fan Lei - Created.
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// Based on the G4GeneralParticleSource class
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// - 06/06/2014, Andrea Dotti
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// Added a mutex to protect access to shared resources (data members).
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// Getters and Setters are mutex'd but not the GetRand* methods,
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// because it is assumed these are called only during the event loop
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// during which the status of this class is invariant
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// --------------------------------------------------------------------
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#ifndef G4SPSRandomGenerator_hh
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#define G4SPSRandomGenerator_hh 1
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#include "G4PhysicsFreeVector.hh"
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#include "G4DataInterpolation.hh"
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#include "G4ThreeVector.hh"
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#include "G4Threading.hh"
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#include "G4Cache.hh"
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class G4SPSRandomGenerator
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{
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public:
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G4SPSRandomGenerator();
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// Constructor: initializes variables
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~G4SPSRandomGenerator();
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// Destructor
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// Biasing Methods
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void SetXBias(const G4ThreeVector&);
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// Allows the user to re-distribute the random
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// numbers used to generate x co-ordinates
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void SetYBias(const G4ThreeVector&);
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// Allows the user to re-distribute the random
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// numbers used to generate y co-ordinates
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void SetZBias(const G4ThreeVector&);
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// Allows the user to re-distribute the random
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// numbers used to generate z co-ordinates
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void SetThetaBias(const G4ThreeVector&);
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// Allows the user to re-distribute the random
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// numbers used to generate values of theta
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void SetPhiBias(const G4ThreeVector&);
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// Allows the user to re-distribute the random
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// numbers used to generate values of phi
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void SetEnergyBias(const G4ThreeVector&);
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// Allows the user to re-distribute the random
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// numbers used to generate the energies
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void SetPosThetaBias(const G4ThreeVector&);
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// Allows the user to re-distribute the random
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// numbers used to generate values of theta for position distribution
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void SetPosPhiBias(const G4ThreeVector&);
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// Allows the user to re-distribute the random
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// numbers used to generate values of phi for position distribution
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G4double GenRandX();
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// Generates the random number for x, with or without biasing
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G4double GenRandY();
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// Generates the random number for y, with or without biasing
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G4double GenRandZ();
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// Generates the random number for z, with or without biasing
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G4double GenRandTheta();
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// Generates the random number for theta, with or without biasing
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G4double GenRandPhi();
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// Generates the random number for phi, with or without biasing
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G4double GenRandEnergy();
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// Generates the random number for energy, with or without biasing
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G4double GenRandPosTheta();
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// Generates the random number for theta, with or without biasing
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// for position distribution
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G4double GenRandPosPhi();
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// Generates the random number for phi, with or without biasing
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// for position distribution
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void SetIntensityWeight(G4double weight);
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G4double GetBiasWeight() const ;
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// Returns the weight change after biasing
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// method to re-set the histograms
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void ReSetHist(const G4String&);
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// Resets the histogram for user defined distribution
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void SetVerbosity(G4int a);
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// Sets the verbosity level
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private:
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// Encapsulate in a struct to guarantee that correct
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// initial state is set via constructor
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//
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struct a_check
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{
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G4bool val;
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a_check() { val = false; }
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};
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// See .cc for an explanation of this in method GenRandX()
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//
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G4Cache<a_check> local_IPDFXBias;
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G4bool XBias, IPDFXBias;
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G4PhysicsFreeVector XBiasH;
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G4PhysicsFreeVector IPDFXBiasH;
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G4Cache<a_check> local_IPDFYBias;
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G4bool YBias, IPDFYBias;
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G4PhysicsFreeVector YBiasH;
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G4PhysicsFreeVector IPDFYBiasH;
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G4Cache<a_check> local_IPDFZBias;
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G4bool ZBias, IPDFZBias;
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G4PhysicsFreeVector ZBiasH;
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G4PhysicsFreeVector IPDFZBiasH;
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G4Cache<a_check> local_IPDFThetaBias;
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G4bool ThetaBias, IPDFThetaBias;
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G4PhysicsFreeVector ThetaBiasH;
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G4PhysicsFreeVector IPDFThetaBiasH;
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G4Cache<a_check> local_IPDFPhiBias;
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G4bool PhiBias, IPDFPhiBias;
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G4PhysicsFreeVector PhiBiasH;
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G4PhysicsFreeVector IPDFPhiBiasH;
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G4Cache<a_check> local_IPDFEnergyBias;
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G4bool EnergyBias, IPDFEnergyBias;
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G4PhysicsFreeVector EnergyBiasH;
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G4PhysicsFreeVector IPDFEnergyBiasH;
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G4Cache<a_check> local_IPDFPosThetaBias;
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G4bool PosThetaBias, IPDFPosThetaBias;
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G4PhysicsFreeVector PosThetaBiasH;
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G4PhysicsFreeVector IPDFPosThetaBiasH;
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G4Cache<a_check> local_IPDFPosPhiBias;
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G4bool PosPhiBias, IPDFPosPhiBias;
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G4PhysicsFreeVector PosPhiBiasH;
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G4PhysicsFreeVector IPDFPosPhiBiasH;
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struct bweights_t
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{
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G4double w[9];
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bweights_t();
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G4double& operator[] (const int i);
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};
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G4Cache<bweights_t> bweights;
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// record x,y,z,theta,phi,energy,posThet,posPhi,intensity weights
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G4int verbosityLevel;
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// Verbosity
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G4Mutex mutex;
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// Protect shared resources
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};
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#endif
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