+# -*- coding: iso-8859-1 -*-
+# Copyright (C) 2007-2022 CEA/DEN, EDF R&D, OPEN CASCADE
+#
+# Copyright (C) 2003-2007 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
+# CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
+#
+# 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
+# version 2.1 of the License, or (at your option) any later version.
+#
+# 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.
+#
+# 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
+#
+# See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
+#
+
+# =======================================
+#
+import salome
+salome.salome_init()
+import GEOM
+from salome.geom import geomBuilder
+geompy = geomBuilder.New()
+
+import SMESH, SALOMEDS
+from salome.smesh import smeshBuilder
+smesh = smeshBuilder.New()
+
+# Geometry
+# ========
+
+# 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
+
+# Values
+# ------
+
+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)
+
+e_hauteur = 2*g_hauteur
+e_centre = geompy.MakeVertex(g_x, g_y-g_hauteur, g_z)
+e_dir = geompy.MakeVectorDXDYDZ(0, 1, 0)
+
+e_cyl1 = geompy.MakeCylinder(e_centre, e_dir, g_rayon3, e_hauteur)
+
+e_blo1 = geompy.MakeCut(e_boite, e_cyl1)
+
+e_cyl2 = geompy.MakeCylinder(e_centre, e_dir, g_rayon2, e_hauteur)
+
+e_blo2 = geompy.MakeCut(e_cyl1, e_cyl2)
+
+e_cyl3 = geompy.MakeCylinder(e_centre, e_dir, g_rayon1, e_hauteur)
+
+e_blo3 = geompy.MakeCut(e_cyl2, e_cyl3)
+
+# Partition and repair
+# --------------------
+
+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))
+
+p_part = geompy.MakePartition([e_blo1, e_blo2, e_blo3], p_tools, [], [], geompy.ShapeType["SOLID"])
+
+p_element = geompy.RemoveExtraEdges(p_part, doUnionFaces=True)
+
+# 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)
+
+# Add in study
+# ------------
+
+piece_id = geompy.addToStudy(piece, "ex11_grid3partition")
+
+# Meshing
+# =======
+
+# Create a hexahedral mesh
+# ------------------------
+
+hexa = smesh.Mesh(piece, "ex11_grid3partition:hexa")
+
+algo = hexa.Segment()
+algo.NumberOfSegments(3)
+
+hexa.Quadrangle()
+
+hexa.Hexahedron()
+
+# Mesh calculus
+# -------------
+
+hexa.Compute()
+
+# Update object browser
+# ---------------------
+
+salome.sg.updateObjBrowser()
