Gabriele Cosmo
65 lines
2.9 KiB
C++
65 lines
2.9 KiB
C++
//
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// ********************************************************************
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// * DISCLAIMER *
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// * *
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// * The following disclaimer summarizes all the specific disclaimers *
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// * of contributors to this software. The specific disclaimers,which *
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// * govern, are listed with their locations in: *
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// * http://cern.ch/geant4/license *
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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. *
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// * *
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// * This code implementation is the intellectual property of the *
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// * GEANT4 collaboration. *
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// * By copying, distributing or modifying the Program (or any work *
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// * based on the Program) you indicate your acceptance of this *
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// * statement, and all its terms. *
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// ********************************************************************
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//
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//
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// $Id: G4VImportanceAlgorithm.hh,v 1.7 2002/10/14 12:36:01 dressel Exp $
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// GEANT4 tag $Name: geant4-05-01 $
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//
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// ----------------------------------------------------------------------
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// Class G4VImportanceAlgorithm
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//
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// Class description:
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//
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// This is an interface used by importance sampling to get the
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// number of copies and weight a mother particle should be split
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// into when crossing a boundary of "importance cells".
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// The interface defines the input to be the ratio of the pre over
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// the post importance and the weight of the mother track.
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// It returns a struct containing the number of copies (including
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// the mother track) to be produced and the weight of each track.
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// A user defined algorithm deriving from this interface may be used
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// by the importance sampling.
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// Author: Michael Dressel (Michael.Dressel@cern.ch)
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// ----------------------------------------------------------------------
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#ifndef G4VImportanceAlgorithm_hh
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#define G4VImportanceAlgorithm_hh G4VImportanceAlgorithm_hh
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#include "G4Nsplit_Weight.hh"
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class G4VImportanceAlgorithm
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{
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public: // with description
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G4VImportanceAlgorithm();
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virtual ~G4VImportanceAlgorithm();
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virtual G4Nsplit_Weight Calculate(G4double ipre,
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G4double ipost,
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G4double init_w) const = 0;
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// calculate the number of tracks and their weight according
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// to the pre and post importance value and the weight of
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// the mother track.
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};
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#endif
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