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geant4/source/geometry/magneticfield/src/G4UniformGravityField.cc
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2019-12-06 15:12:28 +01:00

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//
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//
// G4UniformGravityField implementation
//
// Created: P.Gumplinger, 14.06.2011 - Adapted from G4UniformElectricField
// 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()
{
}
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];
}