Mesh Class Reference

#include <geom.h>

Inheritance diagram for Mesh:

Public Member Functions
	Mesh (int ndim, int nvert_e=0, int ndof_e=0)
virtual	~Mesh ()
int	Nelems () const
int	NverticesElements () const
int	NdofsElement () const
int	Nnodes () const
int	Ndims () const
void	Resize_Connectivity (int nelem, int nvert_e)
const std::vector< int > &	GetConnectivity () const
std::vector< int > &	GetConnectivity ()
void	Resize_Coords (int nnodes, int ndim)
const std::vector< double > &	GetCoords () const
std::vector< double > &	GetCoords ()
void	SetValues (std::vector< double > &v, const std::function< double(double, double)> &func) const
void	Debug () const
virtual std::vector< int >	Index_DirichletNodes () const =0
void	Write_ascii_matlab (std::string const &fname, std::vector< double > const &v) const
void	Visualize (std::vector< double > const &v) const

Protected Member Functions
void	SetNelem (int nelem)
void	SetNverticesElement (int nvert)
void	SetNdofsElement (int ndof)
void	SetNnode (int nnode)
void	SetNdim (int ndim)

Detailed Description

Basis class for finite element meshes.

Definition at line 11 of file geom.h.

Constructor & Destructor Documentation

Mesh()

Mesh::Mesh ( int  ndim, int  nvert_e = 0, int  ndof_e = 0  )

explicit

Constructor initializing the members with default values.

Parameters

[in]	ndim	space dimensions (dimension for coordinates)
[in]	nvert_e	number of vertices per element (dimension for connectivity)
[in]	ndof_e	degrees of freedom per element (= nvert_e for linear elements)

Definition at line 13 of file geom.cpp.

~Mesh()

Mesh::~Mesh ( )

virtual

Destructor.

See clang warning on weak-vtables.

Definition at line 18 of file geom.cpp.

Member Function Documentation

Debug()

void Mesh::Debug

(

)

const

Prints the information for a finite element mesh

Definition at line 32 of file geom.cpp.

GetConnectivity() [1/2]

std::vector<int>& Mesh::GetConnectivity ( )

inline

Access/Change connectivity information (g1,g2,g3)_i.

Returns

convectivity vector [nelems*ndofs].

Definition at line 102 of file geom.h.

GetConnectivity() [2/2]

const std::vector<int>& Mesh::GetConnectivity ( ) const

inline

Read connectivity information (g1,g2,g3)_i.

Returns

convectivity vector [nelems*ndofs].

Definition at line 93 of file geom.h.

GetCoords() [1/2]

std::vector<double>& Mesh::GetCoords ( )

inline

Access/Change coordinates of vertices (x,y)_i.

Returns

coordinates vector [nnodes*2].

Definition at line 133 of file geom.h.

GetCoords() [2/2]

const std::vector<double>& Mesh::GetCoords ( ) const

inline

Read coordinates of vertices (x,y)_i.

Returns

coordinates vector [nnodes*2].

Definition at line 124 of file geom.h.

Index_DirichletNodes()

virtual std::vector<int> Mesh::Index_DirichletNodes ( ) const

pure virtual

Determines the indices of those vertices with Dirichlet boundary conditions

Returns

index vector.

Implemented in Mesh_2d_3_matlab, and Mesh_2d_3_square.

Ndims()

int Mesh::Ndims ( ) const

inline

Space dimension.

Returns

number of dimensions.

Definition at line 71 of file geom.h.

NdofsElement()

int Mesh::NdofsElement ( ) const

inline

Global number of degrees of freedom (dof) for each finite element.

Returns

degrees of freedom per element.

Definition at line 53 of file geom.h.

Nelems()

int Mesh::Nelems ( ) const

inline

Number of finite elements in (sub)domain.

Returns

number of elements.

Definition at line 35 of file geom.h.

Nnodes()

int Mesh::Nnodes ( ) const

inline

Number of vertices in mesh.

Returns

number of vertices.

Definition at line 62 of file geom.h.

NverticesElements()

int Mesh::NverticesElements ( ) const

inline

Global number of vertices for each finite element.

Returns

number of vertices per element.

Definition at line 44 of file geom.h.

Resize_Connectivity()

void Mesh::Resize_Connectivity ( int  nelem, int  nvert_e  )

inline

(Re-)Allocates memory for the element connectivity and redefines the appropriate dimensions.

Parameters

[in]	nelem	number of elements
[in]	nvert_e	number of vertices per element

Definition at line 82 of file geom.h.

Resize_Coords()

void Mesh::Resize_Coords ( int  nnodes, int  ndim  )

inline

(Re-)Allocates memory for the element connectivity and redefines the appropriate dimensions.

Parameters

[in]	nnodes	number of nodes
[in]	ndim	space dimension

Definition at line 113 of file geom.h.

SetNdim()

void Mesh::SetNdim ( int  ndim )

inlineprotected

Definition at line 201 of file geom.h.

SetNdofsElement()

void Mesh::SetNdofsElement ( int  ndof )

inlineprotected

Definition at line 191 of file geom.h.

SetNelem()

void Mesh::SetNelem ( int  nelem )

inlineprotected

Definition at line 181 of file geom.h.

SetNnode()

void Mesh::SetNnode ( int  nnode )

inlineprotected

Definition at line 196 of file geom.h.

SetNverticesElement()

void Mesh::SetNverticesElement ( int  nvert )

inlineprotected

Definition at line 186 of file geom.h.

SetValues()

void Mesh::SetValues	(	std::vector< double > &	v,
		const std::function< double(double, double)> &	func
	)		const

Calculate values in vector v via function func(x,y)

Parameters

[in]	v	vector
[in]	func	function of (x,y) returning a double value.

Definition at line 21 of file geom.cpp.

Visualize()

void Mesh::Visualize

(

std::vector< double > const &

v

)

const

Visualize v together with its mesh information via matlab or octave.

Comment/uncomment those code lines in method Mesh:Visualize (geom.cpp) that are supported on your system.

Parameters

[in]

v

vector

Warning

matlab files ascii_read_meshvector.m visualize_results.m must be in the executing directory.

Definition at line 106 of file geom.cpp.

Write_ascii_matlab()

void Mesh::Write_ascii_matlab	(	std::string const &	fname,
		std::vector< double > const &	v
	)		const

Write vector v toghether with its mesh information to an ASCii file fname.

The data are written in C-style.

Parameters

[in]	fname	file name
[in]	v	vector

Definition at line 56 of file geom.cpp.

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

• geom.h
• geom.cpp