SlitFunc Class Reference

Inheritance diagram for SlitFunc:

Public Member Functions
	SlitFunc ()
	~SlitFunc ()
virtual void	init_context (const FEMContext &) override
	Prepares a context object for use. More...
virtual std::unique_ptr< FEMFunctionBase< Number > >	clone () const override
virtual Number	operator() (const FEMContext &c, const Point &p, const Real=0.) override
virtual void	operator() (const FEMContext &c, const Point &p, const Real time, DenseVector< Number > &output) override
void	operator() (const FEMContext &, const Point &p, DenseVector< Number > &output)
	Evaluation function for time-independent vector-valued functions. More...
virtual void	operator() (const FEMContext &, const Point &p, const Real time, DenseVector< Number > &output)=0
	Evaluation function for time-dependent vector-valued functions. More...
virtual Number	component (const FEMContext &, unsigned int i, const Point &p, Real time=0.)

Detailed Description

Definition at line 17 of file slit_mesh_test.C.

Constructor & Destructor Documentation

SlitFunc()

SlitFunc::SlitFunc ( )

inline

Definition at line 21 of file slit_mesh_test.C.

{}

~SlitFunc()

SlitFunc::~SlitFunc ( )

inline

Definition at line 23 of file slit_mesh_test.C.

{}

Member Function Documentation

clone()

virtual std::unique_ptr<FEMFunctionBase<Number> > SlitFunc::clone ( ) const

inlineoverridevirtual

Returns

A new copy of the function.

The new copy should be as "deep" as necessary to allow independent destruction and simultaneous evaluations of the copies in different threads.

Implements libMesh::FEMFunctionBase< Number >.

Definition at line 28 of file slit_mesh_test.C.

  {
    return libmesh_make_unique<SlitFunc>();
  }

component()

Number libMesh::FEMFunctionBase< Number >::component ( const FEMContext &  context, unsigned int  i, const Point &  p, Real  time = 0.  )

inlinevirtualinherited

Returns

The vector component i at coordinate p and time time.

Note

Subclasses aren't required to override this, since the default implementation is based on the full vector evaluation, which is often correct.

Subclasses are recommended to override this, since the default implementation is based on a vector evaluation, which is usually unnecessarily inefficient.

Definition at line 132 of file fem_function_base.h.

{
  DenseVector<Output> outvec(i+1);
  (*this)(context, p, time, outvec);
  return outvec(i);
}

init_context()

virtual void SlitFunc::init_context ( const FEMContext &  )

inlineoverridevirtual

Prepares a context object for use.

Most problems will want to reimplement this for efficiency, in order to call FE::get_*() as their particular function requires.

Reimplemented from libMesh::FEMFunctionBase< Number >.

Definition at line 25 of file slit_mesh_test.C.

{}

operator()() [1/4]

virtual void libMesh::FEMFunctionBase< Number >::operator() ( const FEMContext &  , const Point &  p, const Real  time, DenseVector< Number > &  output  )

pure virtualinherited

Evaluation function for time-dependent vector-valued functions.

Sets output values in the passed-in output DenseVector.

Pure virtual, so you have to override it.

operator()() [2/4]

void libMesh::FEMFunctionBase< Number >::operator() ( const FEMContext &  context, const Point &  p, DenseVector< Number > &  output  )

inlineinherited

Evaluation function for time-independent vector-valued functions.

Sets output values in the passed-in output DenseVector.

Definition at line 144 of file fem_function_base.h.

{
  // Call the time-dependent function with t=0.
  this->operator()(context, p, 0., output);
}

operator()() [3/4]

virtual void SlitFunc::operator() ( const FEMContext &  c, const Point &  p, const Real  time, DenseVector< Number > &  output  )

inlineoverridevirtual

Definition at line 45 of file slit_mesh_test.C.

  {
    for (unsigned int i=0; i != output.size(); ++i)
      output(i) = (*this)(c, p, time);
  }

References libMesh::DenseVector< T >::size().

operator()() [4/4]

virtual Number SlitFunc::operator() ( const FEMContext &  , const Point &  p, const  time = 0.  )

inlineoverridevirtual

Returns

The scalar function value at coordinate p and time time, which defaults to zero.

Pure virtual, so you have to override it.

Implements libMesh::FEMFunctionBase< Number >.

Definition at line 33 of file slit_mesh_test.C.

  {
    const Real & x = p(0);
    const Real & y = p(1);
    const Point centroid = c.get_elem().centroid();
    const Real sign = centroid(1)/std::abs(centroid(1));
 
    return (1 - std::abs(1-x)) * (1-std::abs(y)) * sign;
  }

References std::abs(), libMesh::Elem::centroid(), libMesh::FEMContext::get_elem(), and libMesh::Real.

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The documentation for this class was generated from the following file:

• tests/mesh/slit_mesh_test.C