moab::AdjSides< CORNERS >::Side Struct Reference

Public Member Functions
bool	skin () const
	Side (const EntityHandle *array, int idx, EntityHandle adj, unsigned short)
	Side (const EntityHandle *array, int idx, EntityHandle adj, unsigned short, const short *indices)
bool	operator== (const Side &other) const
	Side (const EntityHandle *array, int idx, EntityHandle adj, unsigned short)
	Side (const EntityHandle *array, int idx, EntityHandle adj, unsigned short, const short *indices)
bool	operator== (const Side &other) const

Public Attributes
EntityHandle	handles [CORNERS - 1]
	side vertices, except for implicit one More...
EntityHandle	adj_elem
	element that this is a side of, or zero More...

Detailed Description

template<unsigned CORNERS>
struct moab::AdjSides< CORNERS >::Side

This struct is used to for a reduced representation of element "sides" adjacent to a give vertex. As such, it a) does not store the initial vertex that all sides are adjacent to b) orders the remaining vertices in a specific way for fast comparison.

For edge elements, only the opposite vertex is stored. For triangle elements, only the other two vertices are stored, and they are stored with the smaller of those two handles first. For quad elements, only the other three vertices are stored. They are stored such that the vertex opposite the implicit (not stored) vertex is always in slot 1. The other two vertices (in slots 0 and 2) are ordered such that the handle of the one in slot 0 is smaller than the handle in slot 2.

For each side, the adj_elem field is used to store the element that it is a side of as long as the element is considered to be on the skin. The adj_elem field is cleared (set to zero) to indicate that this side is no longer considered to be on the skin (and is the side of more than one element.)

Definition at line 1168 of file Skinner.cpp.

Constructor & Destructor Documentation

Side() [1/4]

template<unsigned CORNERS>

moab::AdjSides< CORNERS >::Side::Side ( const EntityHandle *  array, int  idx, EntityHandle  adj, unsigned short    )

inline

construct from connectivity of side

Parameters

array	The connectivity of the element side.
idx	The index of the implicit vertex (contained in all sides in the list.)
adj	The element that this is a side of.

Definition at line 1183 of file Skinner.cpp.

 : adj_elem( adj )
 {
 switch( CORNERS )
 {
 case 3:
 handles[1] = array[( idx + 2 ) % CORNERS];
 // fall through
 case 2:
 if( 3 == CORNERS ) handles[1] = array[( idx + 2 ) % CORNERS];
 if( 2 <= CORNERS ) handles[0] = array[( idx + 1 ) % CORNERS];
 break;
 default:
 assert( false );
 break;
 }
 if( CORNERS == 3 && handles[1] > handles[0] ) std::swap( handles[0], handles[1] );
 }

References moab::AdjSides< CORNERS >::Side::handles.

Side() [2/4]

template<unsigned CORNERS>

moab::AdjSides< CORNERS >::Side::Side ( const EntityHandle *  array, int  idx, EntityHandle  adj, unsigned short  , const short *  indices  )

inline

construct from connectivity of parent element

Parameters

array	The connectivity of the parent element
idx	The index of the implicit vertex (contained in all sides in the list.) This is an index into 'indices', not 'array'.
adj	The element that this is a side of.
indices	The indices into 'array' at which the vertices representing the side occur.

Definition at line 1210 of file Skinner.cpp.

 : adj_elem( adj )
 {
 switch( CORNERS )
 {
 case 3:
 handles[1] = array[indices[( idx + 2 ) % CORNERS]];
 // fall through
 case 2:
 if( 3 == CORNERS ) handles[1] = array[indices[( idx + 2 ) % CORNERS]];
 if( 2 <= CORNERS ) handles[0] = array[indices[( idx + 1 ) % CORNERS]];
 break;
 default:
 assert( false );
 break;
 }
 if( CORNERS == 3 && handles[1] > handles[0] ) std::swap( handles[0], handles[1] );
 }

References moab::AdjSides< CORNERS >::Side::handles.

Side() [3/4]

moab::AdjSides::Side< 4 >::Side	(	const EntityHandle *	array,
		int	idx,
		EntityHandle	adj,
		unsigned short
	)

construct from connectivity of side

Parameters

array	The connectivity of the element side.
idx	The index of the implicit vertex (contained in all sides in the list.)
adj	The element that this is a side of.

Definition at line 1378 of file Skinner.cpp.

 : adj_elem( adj )
{
 const unsigned int CORNERS = 4;
 handles[2] = array[( idx + 3 ) % CORNERS];
 handles[1] = array[( idx + 2 ) % CORNERS];
 handles[0] = array[( idx + 1 ) % CORNERS];
 if( handles[2] > handles[0] ) std::swap( handles[0], handles[2] );
}

References moab::AdjSides< CORNERS >::Side::handles.

Side() [4/4]

moab::AdjSides::Side< 4 >::Side	(	const EntityHandle *	array,
		int	idx,
		EntityHandle	adj,
		unsigned short	,
		const short *	indices
	)

construct from connectivity of parent element

Parameters

array	The connectivity of the parent element
idx	The index of the implicit vertex (contained in all sides in the list.) This is an index into 'indices', not 'array'.
adj	The element that this is a side of.
indices	The indices into 'array' at which the vertices representing the side occur.

Definition at line 1397 of file Skinner.cpp.

 : adj_elem( adj )
{
 const unsigned int CORNERS = 4;
 handles[2] = array[indices[( idx + 3 ) % CORNERS]];
 handles[1] = array[indices[( idx + 2 ) % CORNERS]];
 handles[0] = array[indices[( idx + 1 ) % CORNERS]];
 if( handles[2] > handles[0] ) std::swap( handles[0], handles[2] );
}

References moab::AdjSides< CORNERS >::Side::handles.

Member Function Documentation

operator==() [1/2]

template<unsigned CORNERS>

bool moab::AdjSides< CORNERS >::Side::operator== ( const Side &  other ) const

inline

Definition at line 1231 of file Skinner.cpp.

 {
 switch( CORNERS )
 {
 case 3:
 return handles[0] == other.handles[0] && handles[1] == other.handles[1];
 case 2:
 return handles[0] == other.handles[0];
 default:
 assert( false );
 return false;
 }
 }

References moab::AdjSides< CORNERS >::Side::handles.

operator==() [2/2]

bool moab::AdjSides::Side< 4 >::operator==

(

const Side &

other

)

const

Definition at line 1410 of file Skinner.cpp.

{
 return handles[0] == other.handles[0] && handles[1] == other.handles[1] && handles[2] == other.handles[2];
}

References moab::AdjSides< CORNERS >::Side::handles.

skin()

template<unsigned CORNERS>

bool moab::AdjSides< CORNERS >::Side::skin ( ) const

inline

Definition at line 1172 of file Skinner.cpp.

 {
 return 0 != adj_elem;
 }

References moab::AdjSides< CORNERS >::Side::adj_elem.

Member Data Documentation

adj_elem

template<unsigned CORNERS>

EntityHandle moab::AdjSides< CORNERS >::Side::adj_elem

element that this is a side of, or zero

Definition at line 1171 of file Skinner.cpp.

Referenced by moab::AdjSides< CORNERS >::Side::skin().

handles

template<unsigned CORNERS>

EntityHandle moab::AdjSides< CORNERS >::Side::handles[CORNERS - 1]

side vertices, except for implicit one

Definition at line 1170 of file Skinner.cpp.

Referenced by moab::AdjSides< CORNERS >::Side::operator==(), and moab::AdjSides< CORNERS >::Side::Side().

---

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

• Skinner.cpp