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geant4/source/geometry/biasing/include/G4ImportanceAlgorithm.hh
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//
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//
// G4ImportanceAlgorithm
//
// Class description:
//
// An implementation of a G4VImportanceAlgorithm (see description in
// G4VImportanceAlgorithm header).
// Author: Michael Dressel (CERN), 2002
// ----------------------------------------------------------------------
#ifndef G4IMPORTANCEALGORITHM_HH
#define G4IMPORTANCEALGORITHM_HH
#include "G4Threading.hh"
#include "G4VImportanceAlgorithm.hh"
/**
* @brief G4ImportanceAlgorithm is a concrete implementation of a
* G4VImportanceAlgorithm.
*/
class G4ImportanceAlgorithm : public G4VImportanceAlgorithm
{
public:
/**
* Default Constructor and Destructor.
*/
G4ImportanceAlgorithm() = default;
~G4ImportanceAlgorithm() override = default;
/**
* Calculates the number of tracks and their weight according to the
* pre and post importance value and the weight of the mother track.
* @param[in] ipre "pre" importance value.
* @param[in] ipost "post" importance value.
* @param[in] init_w Initial weight value.
* @returns A struct containing the number of copies (including the
* mother track) to be produced and the weight of each track.
*/
G4Nsplit_Weight Calculate(G4double ipre,
G4double ipost,
G4double init_w) const override;
private:
/**
* Simple internal loggers.
*/
void Error(const G4String& m) const;
void Warning(const G4String& m) const;
private:
mutable G4bool fWarned = false;
};
#endif