A helper class implementing common code for handling group sets, specially handling group nodes. Is inherited by GmCellDisjointGroupSet and by GmCellGenericGroupSet. More...

Inheritance diagram for GmBaseCellGroupSet:

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Collaboration diagram for GmBaseCellGroupSet:

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Public Member Functions
virtual	~GmBaseCellGroupSet ()
	Destructor.

virtual int	numNodes () const
	Returns the number of nodes shared by the group elements.

virtual int	node (int setIndex) const
	Given an index in the range [0..numNodes()-1], returns the respective mesh node index.

virtual void	clear ()
	Clear the group set in response to a mesh clear() opeartion. It will not clear the list of cellGroups.

virtual const QList< int > &	cellGroups () const
	Returns a list with the cell groups belonging to this group set. Values are the group index in the mesh, ordered by index.

virtual GmCellMesh *	mesh () const
	Returns the mesh owning the cell groups.

Public Member Functions inherited from GmCellGroupSet
virtual int	numCells () const =0
	Returns the number of unique elements in the cell group set.

virtual GmCell *	cell (int setIndex) const =0
	Given an index in the range [0..numCells()-1], returns the respective cell.

virtual bool	ordered () const =0
	Returns true if the the set returned by calls to cell(0) through cell(numCells()-1) is ordered by cell id.

QStringList	cellGroupNames () const
	Returns the result of cellGroups() converted to group names.

Protected Types
typedef QPair< int, int * >	NodeData
	Type for storing node data information: Number of nodes + vector pointer.

Protected Member Functions
	GmBaseCellGroupSet (GmCellMesh *mesh, const QList< int > &groups)
	Base group set constructor. Stores the mesh and an ordered version of the group list.

NodeData *	buildNodeList () const
	Builds the list with nodes used by this element groups. Does not changes the internal state.

NodeData *	nodeData () const
	Auxiliar function that uses the Double Checked Locking Pattern (DCLP) to grab. More...

Protected Attributes
GmCellMesh *	_mesh
	The associated mesh.

QList< int >	_groupList
	The list of mesh cell groups included in this set.

QAtomicPointer< NodeData >	_nodeData
	Atomic pointer to the node data. Contains the number of nodes shared by the group cells and a vector with node indices. Mutable so that it can be filled in a lazy way by nodeData(). Stored in an atomic pointer to enable the use of a DCLP.

QMutex	_nodeDataMutex
	Mutex protecting the creation of _nodeData.

Additional Inherited Members
Static Public Member Functions inherited from GmCellGroupSet
static bool	cellGroupIds (const GmCellMesh *mesh, const QStringList &groupNames, QList< int > &idList, QString &err)
	Given a set of cell group names, creates a set of group ids, filling idList. More...

Detailed Description

A helper class implementing common code for handling group sets, specially handling group nodes. Is inherited by GmCellDisjointGroupSet and by GmCellGenericGroupSet.

Node data is filled in a lazy way only if numNodes() or node() are ever called.