GmMatrixDof Class Reference

A class to represent the degrees of freedom associated with the set of matrix columns, as seen by a physics object. More...

#include <gmElementDof.h>

Inheritance diagram for GmMatrixDof:

Collaboration diagram for GmMatrixDof:

Public Member Functions
	GmMatrixDof ()
	Default connstructor.
void	clear ()
	Clears the information stored in the object.
void	setDofList (const QVector< int > &dofList)
	Sets the list with dof numbers associated with each node.
void	addNode (int node)
	Adds a new node to the matrix. Each node is associated with the dofs given by setDofList()
virtual int	numDof () const
	Returns the total number of dofs (the number of matrix columns)
int	node (int columnIndex) const
	Given a 'matrix column' index, returns the associated node. columnIndex must be a value less than numDof().
virtual int	dof (int columnIndex) const
	Given a 'matrix column' index, returns the associated dof. columnIndex must be a value less than numDof().
QVector< int > &	globalDofMap ()
	Returns the global map used to translate local column indices into global dof numbers (indices on a global matrix). See comments on the class documentation. This vector is intended for use by the assembler and NOT by physics.
Public Member Functions inherited from GmDofMap

Private Attributes
QVector< int >	_nodeList
	Vector indexed by 'matrix column' storing the column respective node number. Size equal to numDof().
QVector< int >	_dofList
	Vector indexed by 'matrix column' storing the column respective dof number. Size equal to numDof().
QVector< int >	_globalDofMap
	An auxiliar vector that can be used by external classes to store a global (local matrix to global matrix) mapping.

Detailed Description

A class to represent the degrees of freedom associated with the set of matrix columns, as seen by a physics object.

Assumes that the matrix is organized "per node" and each node has the same list of dofs. Example: Nodes = {456, 213, 87 and 95}. Dofs per node = {1, 5}. Matrix organization = {456:1, 456:5, 213:1, 213:5, 87:1, 87:5, 95-:, 95:5} where in each x:y pair, x is the global mesh node index and y is the global dof number.

This object can also store space for a global map that translate local column indices into global dof numbers (indices on a global matrix). This vector is NOT controlled by the class. The MatrixDof object is only used as a convenient place to store it and clears it on a call to clear().

Member Function Documentation

dof()

virtual int GmMatrixDof::dof ( int columnIndex ) const

inlinevirtual

Given a 'matrix column' index, returns the associated dof. columnIndex must be a value less than numDof().

Implements GmDofMap.

numDof()

virtual int GmMatrixDof::numDof ( ) const

inlinevirtual

Returns the total number of dofs (the number of matrix columns)

Implements GmDofMap.

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

• inc/gmElementDof.h