G4UniformGravityField.cc

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//
// G4UniformGravityField implementation
//
// Author: Peter Gumplinger (TRIUMF), 14.06.2011
//         Thanks to P.Fierlinger (PSI), A.Capra and A.Fontana (INFN Pavia)
// -------------------------------------------------------------------
 
#include "G4UniformGravityField.hh"
#include "G4PhysicalConstants.hh"
#include "G4SystemOfUnits.hh"
 
// Construct from a 3-vector
//
G4UniformGravityField::G4UniformGravityField(const G4ThreeVector& FieldVector)
  : G4Field ( true ) //  Gravity flag *on*
{
  fFieldComponents[0] = FieldVector.x();
  fFieldComponents[1] = FieldVector.y();
  fFieldComponents[2] = FieldVector.z();
}
 
// Construct from a double > default = -9.81 m*s^-2
G4UniformGravityField::G4UniformGravityField(const G4double gy)
  : G4Field ( true ) 
{
  fFieldComponents[0] = 0.0;
  fFieldComponents[1] = gy;
  fFieldComponents[2] = 0.0;
}
 
G4UniformGravityField::G4UniformGravityField (const G4UniformGravityField& p)
  : G4Field(p)
{
  for (auto i=0; i<3; ++i)
  {
    fFieldComponents[i] = p.fFieldComponents[i];
  }
}
 
G4UniformGravityField&
G4UniformGravityField::operator = (const G4UniformGravityField& p)
{
  if (&p == this) { return *this; }
  G4Field::operator=(p); 
  for (auto i=0; i<3; ++i)
  {
    fFieldComponents[i] = p.fFieldComponents[i];
  }
  return *this;
}
 
G4Field* G4UniformGravityField::Clone() const
{
  return new G4UniformGravityField( G4ThreeVector(fFieldComponents[0],
                                                  fFieldComponents[1],
                                                  fFieldComponents[2]) );
}
 
// -------------------------------------------------------------------
 
void G4UniformGravityField::GetFieldValue (const G4double [4],
                                                 G4double* G ) const
{
   G[0]= fFieldComponents[0];
   G[1]= fFieldComponents[1];
   G[2]= fFieldComponents[2];
}