smesh/test/ex11_grid3partition.py

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# -*- coding: iso-8859-1 -*-
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# Copyright (C) 2007-2023 CEA, EDF, OPEN CASCADE
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#
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# Copyright (C) 2003-2007 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
# CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
#
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# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
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# version 2.1 of the License, or (at your option) any later version.
#
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# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
#
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# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
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# See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
#
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# =======================================
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#
import salome
salome.salome_init()
import GEOM
from salome.geom import geomBuilder
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geompy = geomBuilder.New()
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import SMESH, SALOMEDS
from salome.smesh import smeshBuilder
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smesh = smeshBuilder.New()
# Geometry
# ========
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# grid compound of 3 x 3 elements
# an element is compound of 3 cylinders concentriques
# an element is centered in a square of the grid
# the smaller cylinder is a hole
# prism the grid, and mesh it in hexahedral way
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# Values
# ------
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g_x = 0
g_y = 0
g_z = 0
g_arete = 50
g_hauteur = 30
g_rayon1 = 20
g_rayon2 = 30
g_rayon3 = 40
g_grid = 3
g_trim = 1000
# Element
# -------
e_boite = geompy.MakeBox(g_x-g_arete, g_y-g_hauteur, g_z-g_arete, g_x+g_arete, g_y+g_hauteur, g_z+g_arete)
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e_hauteur = 2*g_hauteur
e_centre = geompy.MakeVertex(g_x, g_y-g_hauteur, g_z)
e_dir = geompy.MakeVectorDXDYDZ(0, 1, 0)
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e_cyl1 = geompy.MakeCylinder(e_centre, e_dir, g_rayon3, e_hauteur)
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e_blo1 = geompy.MakeCut(e_boite, e_cyl1)
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e_cyl2 = geompy.MakeCylinder(e_centre, e_dir, g_rayon2, e_hauteur)
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e_blo2 = geompy.MakeCut(e_cyl1, e_cyl2)
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e_cyl3 = geompy.MakeCylinder(e_centre, e_dir, g_rayon1, e_hauteur)
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e_blo3 = geompy.MakeCut(e_cyl2, e_cyl3)
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# Partition and repair
# --------------------
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p_tools = []
p_tools.append(geompy.MakePlane(e_centre, geompy.MakeVectorDXDYDZ( 1, 0, 1), g_trim))
p_tools.append(geompy.MakePlane(e_centre, geompy.MakeVectorDXDYDZ(-1, 0, 1), g_trim))
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p_part = geompy.MakePartition([e_blo1, e_blo2, e_blo3], p_tools, [], [], geompy.ShapeType["SOLID"])
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p_element = geompy.RemoveExtraEdges(p_part, doUnionFaces=True)
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# Grid and glue
# -------------
grid = geompy.MakeMultiTranslation2D(p_element, geompy.MakeVectorDXDYDZ(1, 0, 0), 2*g_arete, g_grid, geompy.MakeVectorDXDYDZ(0, 0, 1), 2*g_arete, g_grid)
piece = geompy.MakeGlueFaces(grid, 1e-5)
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# Add in study
# ------------
piece_id = geompy.addToStudy(piece, "ex11_grid3partition")
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# Meshing
# =======
# Create a hexahedral mesh
# ------------------------
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hexa = smesh.Mesh(piece, "ex11_grid3partition:hexa")
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algo = hexa.Segment()
algo.NumberOfSegments(3)
hexa.Quadrangle()
hexa.Hexahedron()
# Mesh calculus
# -------------
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isDone = hexa.Compute()
if not isDone:
raise Exception("Error when computing Mesh")
# Update object browser
# ---------------------
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salome.sg.updateObjBrowser()