QProjector< dim >::DataSetDescriptor Class Reference

#include <deal.II/base/qprojector.h>

Public Member Functions
	DataSetDescriptor ()
	operator unsigned int () const

Static Public Member Functions
static DataSetDescriptor	cell ()
static DataSetDescriptor	face (const unsigned int face_no, const bool face_orientation, const bool face_flip, const bool face_rotation, const unsigned int n_quadrature_points)
static DataSetDescriptor	subface (const unsigned int face_no, const unsigned int subface_no, const bool face_orientation, const bool face_flip, const bool face_rotation, const unsigned int n_quadrature_points, const internal::SubfaceCase< dim > ref_case=internal::SubfaceCase< dim >::case_isotropic)

Private Member Functions
	DataSetDescriptor (const unsigned int dataset_offset)

Private Attributes
const unsigned int	dataset_offset

Detailed Description

template<int dim>
class QProjector< dim >::DataSetDescriptor

Since the project_to_all_faces() and project_to_all_subfaces() functions chain together the quadrature points and weights of all projections of a face quadrature formula to the faces or subfaces of a cell, we need a way to identify where the starting index of the points and weights for a particular face or subface is. This class provides this: there are static member functions that generate objects of this type, given face or subface indices, and you can then use the generated object in place of an integer that denotes the offset of a given dataset.

Author

Wolfgang Bangerth, 2003

Definition at line 218 of file qprojector.h.

Constructor & Destructor Documentation

DataSetDescriptor() [1/2]

template<int dim>

QProjector< dim >::DataSetDescriptor::DataSetDescriptor ( )

inline

Default constructor. This doesn't do much except generating an invalid index, since you didn't give a valid descriptor of the cell, face, or subface you wanted.

Definition at line 339 of file qprojector.h.

DataSetDescriptor() [2/2]

template<int dim>

QProjector< dim >::DataSetDescriptor::DataSetDescriptor ( const unsigned int  dataset_offset )

inlineprivate

This is the real constructor, but it is private and thus only available to the static member functions above.

Definition at line 330 of file qprojector.h.

Member Function Documentation

cell()

template<int dim>

QProjector< dim >::DataSetDescriptor QProjector< dim >::DataSetDescriptor::cell ( )

static

Static function to generate the offset of a cell. Since we only have one cell per quadrature object, this offset is of course zero, but we carry this function around for consistency with the other static functions.

Definition at line 348 of file qprojector.h.

face()

template<int dim>

QProjector< dim >::DataSetDescriptor QProjector< dim >::DataSetDescriptor::face ( const unsigned int  face_no, const bool  face_orientation, const bool  face_flip, const bool  face_rotation, const unsigned int  n_quadrature_points  )

static

Static function to generate an offset object for a given face of a cell with the given face orientation, flip and rotation. This function of course is only allowed if dim>=2, and the face orientation, flip and rotation are ignored if the space dimension equals 2.

The last argument denotes the number of quadrature points the lower- dimensional face quadrature formula (the one that has been projected onto the faces) has.

Definition at line 1174 of file quadrature.cc.

subface()

template<int dim>

static DataSetDescriptor QProjector< dim >::DataSetDescriptor::subface ( const unsigned int  face_no, const unsigned int  subface_no, const bool  face_orientation, const bool  face_flip, const bool  face_rotation, const unsigned int  n_quadrature_points, const internal::SubfaceCase< dim >  ref_case = internal::SubfaceCase< dim >::case_isotropic  )

static

Static function to generate an offset object for a given subface of a cell with the given face orientation, flip and rotation. This function of course is only allowed if dim>=2, and the face orientation, flip and rotation are ignored if the space dimension equals 2.

The last but one argument denotes the number of quadrature points the lower-dimensional face quadrature formula (the one that has been projected onto the faces) has.

Through the last argument anisotropic refinement can be respected.

operator unsigned int()

template<int dim>

QProjector< dim >::DataSetDescriptor::operator unsigned int ( ) const

inline

Conversion operator to an integer denoting the offset of the first element of this dataset in the set of quadrature formulas all projected onto faces and subfaces. This conversion operator allows us to use offset descriptor objects in place of integer offsets.

Definition at line 357 of file qprojector.h.

Member Data Documentation

dataset_offset

template<int dim>

const unsigned int QProjector< dim >::DataSetDescriptor::dataset_offset

private

Store the integer offset for a given cell, face, or subface.

Definition at line 288 of file qprojector.h.

---

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

• deal.II/base/qprojector.h
• source/base/quadrature.cc