Gabriele Cosmo
141 lines
5.0 KiB
C++
141 lines
5.0 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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//
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// $Id: G4PhysicsLogVector.cc,v 1.25 2010-05-28 05:13:43 kurasige Exp $
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// GEANT4 tag $Name: not supported by cvs2svn $
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//
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//
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// --------------------------------------------------------------
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// GEANT 4 class implementation file
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//
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// G4PhysicsLogVector.cc
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//
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// History:
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// 02 Dec. 1995, G.Cosmo : Structure created based on object model
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// 15 Feb. 1996, K.Amako : Implemented the 1st version
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// 01 Jul. 1996, K.Amako : Hidden bin from the user introduced
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// 26 Sep. 1996, K.Amako : Constructor with only 'bin size' added
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// 11 Nov. 2000, H.Kurashige : use STL vector for dataVector and binVector
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// 9 Mar. 2001, H.Kurashige : added PhysicsVector type and Retrieve
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// 05 Sep. 2008, V.Ivanchenko : added protections for zero-length vector
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// 19 Jun. 2009, V.Ivanchenko : removed hidden bin
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//
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// --------------------------------------------------------------
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#include "G4PhysicsLogVector.hh"
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G4PhysicsLogVector::G4PhysicsLogVector()
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: G4PhysicsVector()
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{
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type = T_G4PhysicsLogVector;
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}
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G4PhysicsLogVector::G4PhysicsLogVector(size_t theNbin)
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: G4PhysicsVector()
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{
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type = T_G4PhysicsLogVector;
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numberOfNodes = theNbin + 1;
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dataVector.reserve(numberOfNodes);
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binVector.reserve(numberOfNodes);
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for (size_t i=0; i<numberOfNodes; i++)
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{
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binVector.push_back(0.0);
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dataVector.push_back(0.0);
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}
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}
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G4PhysicsLogVector::G4PhysicsLogVector(G4double theEmin,
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G4double theEmax, size_t theNbin)
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: G4PhysicsVector()
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{
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type = T_G4PhysicsLogVector;
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dBin = std::log10(theEmax/theEmin)/theNbin;
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baseBin = std::log10(theEmin)/dBin;
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numberOfNodes = theNbin + 1;
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dataVector.reserve(numberOfNodes);
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binVector.reserve(numberOfNodes);
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static const G4double g4log10 = std::log(10.);
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binVector.push_back(theEmin);
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dataVector.push_back(0.0);
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for (size_t i=1; i<numberOfNodes-1; i++)
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{
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binVector.push_back(std::exp(g4log10*(baseBin+i)*dBin));
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dataVector.push_back(0.0);
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}
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binVector.push_back(theEmax);
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dataVector.push_back(0.0);
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edgeMin = binVector[0];
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edgeMax = binVector[numberOfNodes-1];
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}
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G4PhysicsLogVector::~G4PhysicsLogVector()
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{
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}
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G4bool G4PhysicsLogVector::Retrieve(std::ifstream& fIn, G4bool ascii)
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{
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G4bool success = G4PhysicsVector::Retrieve(fIn, ascii);
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if (success)
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{
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G4double theEmin = binVector[0];
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dBin = std::log10(binVector[1]/theEmin);
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baseBin = std::log10(theEmin)/dBin;
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}
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return success;
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}
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void G4PhysicsLogVector::ScaleVector(G4double factorE, G4double factorV)
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{
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G4PhysicsVector::ScaleVector(factorE, factorV);
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G4double theEmin = binVector[0];
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dBin = std::log10(binVector[1]/theEmin);
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baseBin = std::log10(theEmin)/dBin;
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}
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size_t G4PhysicsLogVector::FindBinLocation(G4double theEnergy) const
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{
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// For G4PhysicsLogVector, FindBinLocation is implemented using
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// a simple arithmetic calculation.
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//
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// Because this is a virtual function, it is accessed through a
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// pointer to the G4PhyiscsVector object for most usages. In this
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// case, 'inline' will not be invoked. However, there is a possibility
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// that the user access to the G4PhysicsLogVector object directly and
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// not through pointers or references. In this case, the 'inline' will
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// be invoked. (See R.B.Murray, "C++ Strategies and Tactics", Chap.6.6)
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//G4cout << "G4PhysicsLogVector::FindBinLocation: e= " << theEnergy
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return size_t( std::log10(theEnergy)/dBin - baseBin );
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}
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