G4PhysicsLogVector.cc

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//
// G4PhysicsLogVector class implementation
//
// Authors:
// - 02 Dec. 1995, G.Cosmo: Structure created based on object model
// - 03 Mar. 1996, K.Amako: Implemented the 1st version
// Revisions:
// - 11 Nov. 2000, H.Kurashige : Use STL vector for dataVector and binVector
// - 19 Jun. 2009, V.Ivanchenko : removed hidden bin
// --------------------------------------------------------------------
 
#include "G4PhysicsLogVector.hh"
#include "G4Exp.hh"
 
// --------------------------------------------------------------------
G4PhysicsLogVector::G4PhysicsLogVector()
  : G4PhysicsVector()
{
  type = T_G4PhysicsLogVector;
}
 
// --------------------------------------------------------------------
G4PhysicsLogVector::G4PhysicsLogVector(G4double theEmin, G4double theEmax,
                                       std::size_t theNbin)
  : G4PhysicsVector()
{
  numberOfNodes = theNbin + 1;
  if(theNbin < 2 || theEmin == theEmax)
  {
    G4ExceptionDescription ed;
    ed << "G4PhysicsLogVector with wrong parameters: theNbin= " << theNbin
       << " theEmin= " << theEmin << " theEmax= " << theEmax;
    G4Exception("G4PhysicsLogVector::G4PhysicsLogVector()", "glob03",
                FatalException, ed, "theNbins should be > 2");
  }
  if(numberOfNodes < 3)
  {
    numberOfNodes = 3;
  }
  type = T_G4PhysicsLogVector;
 
  invdBin = 1. / (G4Log(theEmax / theEmin) / (G4double) (numberOfNodes - 1));
  baseBin = G4Log(theEmin) * invdBin;
 
  dataVector.reserve(numberOfNodes);
  binVector.reserve(numberOfNodes);
 
  binVector.push_back(theEmin);
  dataVector.push_back(0.0);
 
  for(std::size_t i = 1; i < numberOfNodes - 1; ++i)
  {
    binVector.push_back(G4Exp((baseBin + i) / invdBin));
    dataVector.push_back(0.0);
  }
  binVector.push_back(theEmax);
  dataVector.push_back(0.0);
 
  edgeMin = binVector[0];
  edgeMax = binVector[numberOfNodes - 1];
}
 
// --------------------------------------------------------------------
G4PhysicsLogVector::~G4PhysicsLogVector() {}
 
// --------------------------------------------------------------------
G4bool G4PhysicsLogVector::Retrieve(std::ifstream& fIn, G4bool ascii)
{
  G4bool success = G4PhysicsVector::Retrieve(fIn, ascii);
  if(success)
  {
    invdBin = 1. / G4Log(binVector[1] / edgeMin);
    baseBin = G4Log(edgeMin) * invdBin;
  }
  return success;
}
 
// --------------------------------------------------------------------
void G4PhysicsLogVector::ScaleVector(G4double factorE, G4double factorV)
{
  G4PhysicsVector::ScaleVector(factorE, factorV);
  invdBin = 1. / G4Log(binVector[1] / edgeMin);
  baseBin = G4Log(edgeMin) * invdBin;
}