#include <fe_compute_data.h>

Public Member Functions
	FEComputeData (const EquationSystems &es, const Point &pin)
void	clear ()
void	init ()
Public Attributes
const EquationSystems &	equation_systems
const Point &	p
std::vector< Number >	shape
Real	phase
Real	speed
Real	frequency

Detailed Description

class FEComputeData hides arbitrary data to be passed to and from children of FEBase through the FEInterface::compute_data() method. This enables the efficient computation of data on the finite element level, while maintaining library integrity. -- With special finite elements disabled (like infinite elements), this class wraps the return values of all shape functions from FEInterface::shape() in a std::vector<Number>. -- With enabled infinite elements, this class returns a vector of physically correct shape functions, both for finite and infinite elements.

Definition at line 46 of file fe_compute_data.h.

Constructor & Destructor Documentation

libMesh::FEComputeData::FEComputeData	(	const EquationSystems &	es,
		const Point &	pin
	)		`[inline]`

Constructor. Takes the required input data and clears the output data using clear().

Definition at line 57 of file fe_compute_data.h.

References clear().

                                   :
    equation_systems(es),
    p(pin)
  {
    this->clear();
  }

Member Function Documentation

void libMesh::FEComputeData::clear ( )

Clears the output data completely.

Definition at line 26 of file fe_compute_data.C.

References frequency, phase, shape, and speed.

Referenced by FEComputeData().

{
  this->shape.clear();
#if defined(LIBMESH_ENABLE_INFINITE_ELEMENTS) && !defined(LIBMESH_USE_COMPLEX_NUMBERS)
  this->phase = 0.;
  this->speed = 0.;
#endif

#if defined (LIBMESH_ENABLE_INFINITE_ELEMENTS) && defined(LIBMESH_USE_COMPLEX_NUMBERS)
  this->speed = 0.;
  this->frequency = 0.;

#endif
}

void libMesh::FEComputeData::init ( )

Inits the output data to default values, provided the fields are correctly resized.

Definition at line 43 of file fe_compute_data.C.

References equation_systems, frequency, libMesh::Parameters::get(), libMesh::Parameters::have_parameter(), libMesh::EquationSystems::parameters, phase, libMesh::Real, shape, and speed.

Referenced by libMesh::FEInterface::compute_data().

{
  if (!(this->shape.empty()))
    std::fill (this->shape.begin(),   this->shape.end(),   0.);

#if defined(LIBMESH_ENABLE_INFINITE_ELEMENTS) && !defined(LIBMESH_USE_COMPLEX_NUMBERS)
  this->phase = 0.;

  if (equation_systems.parameters.have_parameter<Real>("speed"))
    this->speed = this->equation_systems.parameters.get<Real>("speed");
#endif

#if defined (LIBMESH_ENABLE_INFINITE_ELEMENTS) && defined(LIBMESH_USE_COMPLEX_NUMBERS)
  if (equation_systems.parameters.have_parameter<Real>("speed"))
    this->speed = this->equation_systems.parameters.get<Real>("speed");

  if (equation_systems.parameters.have_parameter<Real>("current frequency"))
    this->frequency = this->equation_systems.parameters.get<Real>("current frequency");

#endif
}