Python Interface

Python package GMSHPluginBuilder defines several classes, destined for creation of the 2D and 3D meshes.

Documentation for GMSHPlugin package is available in linear form grouped by classes, declared in the GMSHPluginBuilder.py file.

Below you can see an example of usage of the GMSHPluginBuilder package for mesh generation:

Example of 2d and 3d mesh generation with GMSH:

# -*- coding: iso-8859-1 -*-
 
import salome
 
salome.salome_init()
 
from salome.geom import geomBuilder
geompy = geomBuilder.New()
 
from salome.smesh import smeshBuilder
smesh = smeshBuilder.New()
 
from salome.GMSHPlugin import GMSHPluginBuilder
 
# create a box
Box = geompy.MakeBoxDXDYDZ(10, 10, 10)
geompy.addToStudy( Box, 'Box' )
 
# 1. Create a 2D mesh on the box with GMSH_2D algorithm
Mesh_2D = smesh.Mesh(Box, "Box : 2D mesh by GMSH_2D")
# create a Gmsh 2D algorithm for solids
Algo_2D = Mesh_2D.Triangle(algo=smeshBuilder.GMSH_2D)
# define hypotheses
Param_2D = Algo_2D.Parameters()
# define algorithm
Param_2D.Set2DAlgo( 0 )
# define min element
Param_2D.SetMinSize( 0 )
# define max element
Param_2D.SetMaxSize( 2 )
 
# 2. Create a 3D mesh on the box with GMSH_3D algorithm
Mesh_3D = smesh.Mesh(Box, "Box : 3D mesh by GMSH_3D")
# create a Gmsh 3D algorithm for solids
Algo_3D = Mesh_3D.Tetrahedron(algo=smeshBuilder.GMSH)
# define hypotheses
Param_3D = Algo_3D.Parameters()
# define algorithms
Param_3D.Set2DAlgo( 0 )
Param_3D.SetIs2d( 0 )
Param_3D.Set3DAlgo( 0 )
# define min element size
Param_3D.SetMinSize( 0 )
# define max element size
Param_3D.SetMaxSize( 2 )
 
# compute the meshes
Mesh_2D.Compute()
Mesh_3D.Compute()
 
if salome.sg.hasDesktop():
  salome.sg.updateObjBrowser()

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