Facet_node_enumerator Class Reference

Adaptor for enumerating node IDs of a facet of an element. More...

#include <Element_accessors.h>

Collaboration diagram for Facet_node_enumerator:

Public Member Functions
	Facet_node_enumerator (const Element_node_enumerator *ene, int k)
int	size_of_nodes () const
int	size_of_corners () const
int	size_of_edges () const
void	get_nodes (std::vector< int > &nodes, bool quad_ret)
int	operator[] (int i) const

Protected Attributes
const Element_node_enumerator *const	_ene
const int	_k
const int	_ne
const int *	_fn_list

Static Protected Attributes
static const int	_face_node_lists_tets [4][6]
static const int	_face_node_lists_pyra [5][8]
static const int	_face_node_lists_pris [5][9]
static const int	_face_node_lists_hexa [6][9]

Detailed Description

Adaptor for enumerating node IDs of a facet of an element.

Definition at line 200 of file Element_accessors.h.

Constructor & Destructor Documentation

Facet_node_enumerator	(	const Element_node_enumerator *	ene,
		int	k
	)

Definition at line 154 of file Element_accessors.C.

References _face_node_lists_hexa, _face_node_lists_pris, _face_node_lists_pyra, _face_node_lists_tets, _fn_list, _k, _ne, COM_assertion_msg, Element_node_enumerator::dimension(), and Element_node_enumerator::size_of_nodes().

  : _ene(ene), _k(k), _ne(0) {
  if ( ene->dimension() == 2) {
    const_cast<int&>(_ne) = 1;
    _fn_list = NULL;
  }
  else {
    switch ( ene->size_of_nodes()) {
    case 4:    // Tetrahedra
    case 10: {
      const_cast<int&>(_ne) = 3;
      _fn_list = _face_node_lists_tets[_k];
      break;
    }
    case 5:    // Pyramids
    case 14: {
      const_cast<int&>(_ne) = (_k==0)? 4 : 3;
      _fn_list = _face_node_lists_pyra[_k];
      break;
    }
    case 6:    // Prisms (Pentahedra)
    case 15:
    case 18: {
      const_cast<int&>(_ne) = (_k<3)? 4 : 3;
      _fn_list = _face_node_lists_pris[_k];
      break;
    }
    case 8:    // Hexahedra
    case 20:
    case 27: {
      const_cast<int&>(_ne) = 4;
      _fn_list = _face_node_lists_hexa[_k];
      break;
    }
    default: COM_assertion_msg(false, "Not supported yet.");
    }
  }
}

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Member Function Documentation

void get_nodes	(	std::vector< int > &	nodes,
		bool	quad_ret
	)

Definition at line 217 of file Element_accessors.C.

References _ene, _fn_list, _k, _ne, i, size_of_corners(), Element_node_enumerator::size_of_edges(), and size_of_nodes().

Referenced by Pane_boundary::determine_border_nodes_3().

                                                   {
  int nn = quad_ret ? size_of_nodes() : size_of_corners();
  nodes.resize( nn);

  if ( _ne == 1) {
    int num_edges = _ene->size_of_edges(); 
    // Retrun the nodes on each edge.
    nodes[0] = (*_ene)[(_k)%num_edges];
    nodes[1] = (*_ene)[(_k+1)%num_edges];

    if (nn>2) nodes[2] = (*_ene)[num_edges+_k];
  } 
  else {
    for ( int i=0; i<nn; ++i) nodes[i] = (*_ene)[_fn_list[i]];
  }
}

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int operator[]

(

int

i

)

const

Definition at line 207 of file Element_accessors.C.

References _ene, _fn_list, _k, _ne, i, and Element_node_enumerator::size_of_edges().

                                                   {
  if ( _ne > 1) 
    return (*_ene)[_fn_list[i]];
  else {
    if ( i<2) return (*_ene)[(_k+i)%_ene->size_of_edges()];
    else return (*_ene)[_ene->size_of_edges()+_k];
  }
}

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int size_of_corners ( ) const

inline

Definition at line 209 of file Element_accessors.h.

References _ne.

Referenced by get_nodes(), and Pane_boundary::min_squared_edge_len().

{ return (_ne == 1) ? 2 : _ne ; }

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int size_of_edges ( ) const

inline

Definition at line 212 of file Element_accessors.h.

References _ne.

Referenced by Pane_boundary::determine_border_nodes_3().

{ return _ne;  }

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int size_of_nodes

(

)

const

Definition at line 193 of file Element_accessors.C.

References _ene, _k, _ne, Element_node_enumerator::is_quadratic(), num_nodes, and Element_node_enumerator::size_of_nodes().

Referenced by get_nodes().

                                               {
  if ( _ne == 1)
    return _ene->is_quadratic() ? 3 : 2;
  else {
    int nn = _ne; // Number of nodes per face

    if ( _ene->is_quadratic()) {
      int num_nodes = _ene->size_of_nodes();
      nn += _ne + (num_nodes == 18 && _k<3 || num_nodes == 27);
    }
    return nn;
  }
}

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Member Data Documentation

const Element_node_enumerator* const _ene

protected

Definition at line 226 of file Element_accessors.h.

Referenced by get_nodes(), operator[](), and size_of_nodes().

const int _face_node_lists_hexa

staticprotected

Initial value:

=
{ {0,3,2,1,11,10,9, 8, 20}, {0,1,5,4,8, 13,16,12,21},
  {1,2,6,5,9, 14,17,13,22}, {2,3,7,6,10,15,18,14,23},
  {0,4,7,3,12,19,15,11,24}, {4,5,6,7,16,17,18,19,25}}

Definition at line 224 of file Element_accessors.h.

Referenced by Facet_node_enumerator().

const int _face_node_lists_pris

staticprotected

Initial value:

=
{ {0,1,4,3,6,10,12,9,15}, {1,2,5,4,7,11,13,10,16}, {2,0,3,5,8,9,14,11,17},
  {0,2,1,8,7,6,-1,-1,-1}, {3,4,5,12,13,14,-1,-1,-1}}

Definition at line 223 of file Element_accessors.h.

Referenced by Facet_node_enumerator().

const int _face_node_lists_pyra

staticprotected

Initial value:

=
{ {0,3,2,1,8,7,6,5}, {0,1,4,5,10,9,-1,-1}, {1,2,4,6,11,10,-1,-1},
  {2,3,4,7,12,11,-1,-1}, {3,0,4,8,9,12,-1,-1}}

Definition at line 222 of file Element_accessors.h.

Referenced by Facet_node_enumerator().

const int _face_node_lists_tets

staticprotected

Initial value:

=
{ {0, 2, 1, 6, 5, 4}, { 0, 1, 3, 4, 8, 7}, 
  {1, 2, 3, 5, 9, 8}, {2, 0, 3, 6, 7, 9}}

Definition at line 221 of file Element_accessors.h.

Referenced by Facet_node_enumerator().

const int* _fn_list

protected

Definition at line 229 of file Element_accessors.h.

Referenced by Facet_node_enumerator(), get_nodes(), and operator[]().

const int _k

protected

Definition at line 227 of file Element_accessors.h.

Referenced by Facet_node_enumerator(), get_nodes(), operator[](), and size_of_nodes().

const int _ne

protected

Definition at line 228 of file Element_accessors.h.

Referenced by Facet_node_enumerator(), get_nodes(), operator[](), size_of_corners(), size_of_edges(), and size_of_nodes().

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

• Element_accessors.h
• Element_accessors.C