A relation between two mesh entities with a relation identifier and kind . More...

#include <Relation.hpp>

Public Types
typedef uint32_t	raw_relation_id_type
typedef uint32_t	attribute_type
Public Member Functions
	Relation ()
	Constructor.
	Relation (Entity &entity, RelationIdentifier identifier)
	Construct a relation from a referenced entity and local identifier.
attribute_type	attribute () const
void	set_attribute (attribute_type attr) const
raw_relation_id_type	raw_relation_id () const
	The encoded relation raw_relation_id.
unsigned	entity_rank () const
	The rank of the referenced entity.
RelationIdentifier	identifier () const
	The local relation identifier.
Entity *	entity () const
	The referenced entity.
bool	operator== (const Relation &r) const
	Equality operator.
bool	operator!= (const Relation &r) const
	Inequality operator.
bool	operator< (const Relation &r) const
	Ordering operator.
Static Public Member Functions
static raw_relation_id_type	raw_relation_id (unsigned rank, unsigned id)
	The encoded relation raw_relation_id.

Detailed Description

A relation between two mesh entities with a relation identifier and kind .

Each entity owns a collection of relations to other entities. Each of these relations has a referenced entity, direction, relation identifier, and kind.

The direction specifies whether the relation is from the entity owning the relation to the referenced entity or conversely from the referenced entity to the owning entity.
The identifier provides a local numbering convention for relations, for example the local numbering convention for the nodes of an element.
Relations can be given a kind raw_relation_id to differentiate between topological relations (kind = 0) and other kinds of relationships such as constraints.

Relations are ordered by their

kind of relation,
type of the referenced entity,
if the relation is forward or converse,
local relation identifier, and then
referenced entity's identifier.

Definition at line 58 of file Relation.hpp.

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

Public Types

Public Member Functions

Static Public Member Functions

Detailed Description