mirror of
https://git.salome-platform.org/gitpub/modules/smesh.git
synced 2024-11-14 17:48:34 +05:00
63 lines
1.8 KiB
Python
63 lines
1.8 KiB
Python
import salome
|
|
salome.salome_init()
|
|
|
|
from salome.geom import geomBuilder
|
|
geompy = geomBuilder.New()
|
|
|
|
# This script demonstrates generation of 3D mesh basing on a modified 2D mesh
|
|
#
|
|
# Purpose is to get a tetrahedral mesh in a sphere cut by a cube.
|
|
# The requirement is to have a surface mesh on the cube comprised of
|
|
# triangles of exactly the same size arranged in a grid pattern.
|
|
#
|
|
# To fulfill this requirement we mesh the box using Quadrangle: Mapping
|
|
# meshing algorithm, split quadrangles into triangles and then generate
|
|
# tetrahedrons.
|
|
|
|
|
|
# Make the geometry
|
|
|
|
Box_1 = geompy.MakeBox(-100,-100,-100, 100, 100, 100)
|
|
Sphere_1 = geompy.MakeSphereR( 300 )
|
|
Cut_1 = geompy.MakeCut(Sphere_1, Box_1, theName="Cut_1")
|
|
# get a spherical face
|
|
Sph_Face = geompy.ExtractShapes( Sphere_1, geompy.ShapeType["FACE"] )[0]
|
|
|
|
# get the shape Sph_Face turned into during MakeCut()
|
|
Sph_Face = geompy.GetInPlace(Cut_1, Sph_Face, isNewImplementation=True, theName="Sphere_1")
|
|
|
|
|
|
# 1) Define a mesh with 1D and 2D meshers
|
|
|
|
import SMESH
|
|
from salome.smesh import smeshBuilder
|
|
smesh = smeshBuilder.New()
|
|
|
|
Mesh_1 = smesh.Mesh(Cut_1)
|
|
|
|
# "global" meshers (assigned to Cut_1) that will be used for the box
|
|
Regular_1D = Mesh_1.Segment()
|
|
Local_Length_1 = Regular_1D.LocalLength(20)
|
|
Quadrangle_2D = Mesh_1.Quadrangle()
|
|
|
|
# a "local" mesher (assigned to a sub-mesh on Sphere_1) to mesh the sphere
|
|
algo_2D = Mesh_1.Triangle( smeshBuilder.NETGEN_1D2D, Sph_Face )
|
|
algo_2D.SetMaxSize( 70. )
|
|
algo_2D.SetFineness( smeshBuilder.Moderate )
|
|
algo_2D.SetMinSize( 7. )
|
|
|
|
# 2) Compute 2D mesh
|
|
isDone = Mesh_1.Compute()
|
|
|
|
# 3) Split quadrangles into triangles
|
|
isDone = Mesh_1.SplitQuadObject( Mesh_1, Diag13=True )
|
|
|
|
# 4) Define a 3D mesher
|
|
Mesh_1.Tetrahedron()
|
|
|
|
# 5) Compute 3D mesh
|
|
Mesh_1.Compute()
|
|
|
|
if salome.sg.hasDesktop():
|
|
salome.sg.updateObjBrowser()
|