/usr/include/deal.II/numerics/mesh_worker_output.h is in libdeal.ii-dev 6.3.1-1.1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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// $Id: mesh_worker_output.h 20871 2010-03-21 19:22:22Z kanschat $
//
// Copyright (C) 2010 by the deal.II authors
//
// This file is subject to QPL and may not be distributed
// without copyright and license information. Please refer
// to the file deal.II/doc/license.html for the text and
// further information on this license.
//
//---------------------------------------------------------------------------
#ifndef __deal2__mesh_worker_output_h
#define __deal2__mesh_worker_output_h
#include <numerics/mesh_worker_info.h>
#include <base/named_data.h>
#include <base/smartpointer.h>
#include <lac/block_vector.h>
#include <base/mg_level_object.h>
DEAL_II_NAMESPACE_OPEN
namespace MeshWorker
{
namespace Assembler
{
/**
* A class that, instead of assembling into a matrix or vector,
* outputs the results on a cell to a gnuplot patch. This works only
* for elements with support points. The first dim data vectors will
* be the coordinates, the following are the data.
*
* @note In the current implementation, only cell data can be written.
*/
class GnuplotPatch
{
public:
/**
* Constructor.
*/
GnuplotPatch();
/**
* Initialize for writing
* <i>n</i> data vectors. The
* total number of data
* vectors produced is n+dim
* and the first dim will be
* the space coordinates of
* the points.
*/
void initialize(unsigned int dim, unsigned int n_vectors, unsigned int n_points);
/**
* Set the stream #os to
* which data is written. If
* no stream is selected with
* this function, data goes
* to #deallog.
*/
void initialize_stream(std::ostream& stream);
/**
* Initialize the local data
* in the
* DoFInfo
* object used later for
* assembling.
*
* The second parameter is
* used to distinguish
* between the data used on
* cells and boundary faces
* on the one hand and
* interior faces on the
* other. Interior faces may
* require additional data
* being initialized.
*/
template <int dim>
void initialize_info(DoFInfo<dim>& info,
bool interior_face);
/**
* Assemble the local values
* into the global vectors.
*/
template<int dim>
void assemble(const DoFInfo<dim>& info);
/**
* Assemble both local values
* into the global vectors.
*/
template<int dim>
void assemble(const DoFInfo<dim>& info1,
const DoFInfo<dim>& info2);
private:
/**
* Write the object T either
* to the stream #os, if the
* pointer is nonzero, or to
* #deallog if no pointer has
* been set.
*/
template<typename T>
void write(const T& t) const;
void write_endl () const;
unsigned int patch_dimension;
unsigned int n_vectors;
unsigned int n_points;
std::ostream* os;
};
//----------------------------------------------------------------------//
template <typename T>
inline void
GnuplotPatch::write(const T& d) const
{
if (os == 0)
deallog << d;
else
(*os) << d;
}
inline void
GnuplotPatch::write_endl() const
{
if (os == 0)
deallog << std::endl;
else
(*os) << std::endl;
}
inline
GnuplotPatch::GnuplotPatch()
:
os(0)
{}
inline void
GnuplotPatch::initialize(unsigned int dim, unsigned int np, unsigned int nv)
{
patch_dimension = dim;
n_vectors = nv;
n_points = np;
}
inline void
GnuplotPatch::initialize_stream(std::ostream& stream)
{
os = &stream;
}
template <int dim>
inline void
GnuplotPatch::initialize_info(DoFInfo<dim>& info, bool)
{
AssertDimension(patch_dimension,dim);
info.initialize_quadrature(n_points, n_vectors);
}
template <int dim>
inline void
GnuplotPatch::assemble(const DoFInfo<dim>& info)
{
const unsigned int n_q_points = info.n_quadrature_points();
const unsigned int nv = info.n_quadrature_values();
const unsigned int square_root = std::pow(n_q_points, 1./dim)+.5;
for (unsigned int k1=0; k1<square_root; ++k1)
{
for (unsigned int k2=0; k2<square_root; ++k2)
{
for(unsigned int i=0; i<nv; ++i)
{
write(info.quadrature_value(k1*square_root+k2,i));
write('\t');
}
write_endl();
}
write_endl();
}
write_endl();
}
template <int dim>
inline void
GnuplotPatch::assemble(const DoFInfo<dim>& /*info1*/, const DoFInfo<dim>& /*info2*/)
{
Assert(false, ExcNotImplemented());
}
}
}
DEAL_II_NAMESPACE_CLOSE
#endif
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