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//
// $Id: G4PhysicsLogVector.cc,v 1.22 2009/06/25 10:05:26 vnivanch Exp $
// GEANT4 tag $Name: geant4-09-03 $
//
// 
// --------------------------------------------------------------
//      GEANT 4 class implementation file
//
//  G4PhysicsLogVector.cc
//
//  History:
//    02 Dec. 1995, G.Cosmo : Structure created based on object model
//    15 Feb. 1996, K.Amako : Implemented the 1st version
//    01 Jul. 1996, K.Amako : Hidden bin from the user introduced
//    26 Sep. 1996, K.Amako : Constructor with only 'bin size' added
//    11 Nov. 2000, H.Kurashige : use STL vector for dataVector and binVector
//    9  Mar. 2001, H.Kurashige : added PhysicsVector type and Retrieve
//    05 Sep. 2008, V.Ivanchenko : added protections for zero-length vector
//    19 Jun. 2009, V.Ivanchenko : removed hidden bin 
//
// --------------------------------------------------------------

#include "G4PhysicsLogVector.hh"

G4PhysicsLogVector::G4PhysicsLogVector()
  : G4PhysicsVector(), dBin(0.), baseBin(0.)
{ 
  type = T_G4PhysicsLogVector;
}

G4PhysicsLogVector::G4PhysicsLogVector(size_t theNbin)
  : G4PhysicsVector(), dBin(0.), baseBin(0.)
{
  type = T_G4PhysicsLogVector;

  numberOfNodes = theNbin + 1;
  dataVector.reserve(numberOfNodes);
  binVector.reserve(numberOfNodes);      

  for (size_t i=0; i<numberOfNodes; i++)
  {
     binVector.push_back(0.0);
     dataVector.push_back(0.0);
  }
}  

G4PhysicsLogVector::G4PhysicsLogVector(G4double theEmin, 
                                       G4double theEmax, size_t theNbin)
  : G4PhysicsVector(), dBin(std::log10(theEmax/theEmin)/theNbin),
    baseBin(std::log10(theEmin)/dBin)
{
  type = T_G4PhysicsLogVector;

  numberOfNodes = theNbin + 1;
  dataVector.reserve(numberOfNodes);
  binVector.reserve(numberOfNodes);
  static const G4double g4log10 = std::log(10.); 

  for (size_t i=0; i<numberOfNodes; i++)
  {
    binVector.push_back(std::exp(g4log10*(baseBin+i)*dBin));
    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)
  {
    G4double theEmin = binVector[0];
    dBin = std::log10(binVector[1]/theEmin);
    baseBin = std::log10(theEmin)/dBin;
  }
  return success;
}

G4PhysicsLogVector::G4PhysicsLogVector(const G4PhysicsLogVector& right)
  : G4PhysicsVector(right)
{
  dBin = right.dBin;
  baseBin = right.baseBin;
}

G4PhysicsLogVector& 
G4PhysicsLogVector::operator=(const G4PhysicsLogVector& right)
{
  // Check assignment to self
  //
  if(this == &right) { return *this; }

  DeleteData();
  CopyData(right);

  dBin    = right.dBin;
  baseBin = right.baseBin;
  return *this;
}
