GMSH Parser

Import, parse and store mesh data for a geometry.

  • This file is a part of the coursework module Personal Programming Project (PPP) in M.Sc. Computational Materials Science, Technische Universität Bergakademie Freiberg.

  • This file is a part of the project Modeling of radiative heat-exchange using finite element method

This file reads *.msh files written with GMSH’s native version 2 file format. (Legacy) ParseElements class classifies the elements according to their type as defined in the GMSH documentation.

class parser.Mesh(CONFIG_FILE: Path = None)

Bases: ParseElements, ParseNodes, ParseFormat

Class that inherits all the above classes. Provides a single entity for all the information.

property coordinates

Coordinates of all the nodes in the mesh.

class parser.ParseElements(CONFIG_FILE: Path = None)

Bases: object

Parses the elements from the mesh file provided.

N_ELEM

Number of elements as present in the file.

Type:

int

ELEM_PARSE_STATUS

Indicator for status of parsing nodes.

Type:

bool

Elements

Dictionary consisting of all the elements parsed.

Type:

dict

property Elements: dict

Dictionary containing all elements as parsed from the mesh file.

property boundaryElements: defaultdict(<class 'set'>, {})

Elements of the boundary.

property boundaryNodes: defaultdict(<class 'set'>, {})

Nodes of the elements present on the boundary.

compute_boundary() → None

Computes elements present on the boundary.

property edgeElements: list

List of all 2-node linear elements present in the mesh file.

group_elements() → None

Method to group elements based on their type. GMSH documentation

property pointElements: list

List of all 1-node elements present in the mesh file.

property quadElements: list

List of all 4-node quadrilateral elements present in the mesh file.

set_elements_content() → None

Sets the output content string.

property triElements: list

List of all 3-node triangular elements present in the mesh file.

class parser.ParseFormat(CONFIG_FILE: Path = None)

Bases: object

Parses the format of the mesh.

version_number

Version number of the mesh file. Currently only Version 2 of GMSH native format supported

Type:

float

file_type

ASCII.

Type:

string

mesh_size
Type:

int

FORMAT_PARSE_STATUS

Indicator for status of the parsing.

Type:

bool

set_format_content() → None

Sets the output string.

class parser.ParseNodes(CONFIG_FILE: Path = None)

Bases: object

Parses the nodes from the mesh file provided.

N_NODES

Number of nodes as present in the file.

Type:

int

NODE_PARSE_STATUS

Indicator for status of parsing nodes.

Type:

bool

Nodes

Dictionary consisting of all the nodes parsed.

Type:

dict

property Nodes: dict

Dictionary containing all nodes as parsed from the mesh file.

set_nodes_content() → None

Sets the output string.