+# -*- 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()
+
+import math
+
+# Geometry
+# ========
+
+# Element of a grid compound by a square with a cylinder on each vertex build by points, edges, faces and solids
+
+# Values
+# ------
+
+ox = 0
+oy = 0
+oz = 0
+
+arete = 50
+hauteur = 100
+
+rayon = 10
+
+demi = rayon/2
+r3 = demi*math.sqrt(3)
+
+# Points
+# ------
+
+piecePoint111 = geompy.MakeVertex(ox+rayon , oy, oz)
+piecePoint211 = geompy.MakeVertex(ox+arete-rayon, oy, oz)
+piecePoint112 = geompy.MakeVertex(ox , oy, oz+rayon)
+piecePoint212 = geompy.MakeVertex(ox+arete , oy, oz+rayon)
+piecePoint113 = geompy.MakeVertex(ox , oy, oz+arete-rayon)
+piecePoint213 = geompy.MakeVertex(ox+arete , oy, oz+arete-rayon)
+piecePoint114 = geompy.MakeVertex(ox+rayon , oy, oz+arete)
+piecePoint214 = geompy.MakeVertex(ox+arete-rayon, oy, oz+arete)
+
+pieceCenter1 = geompy.MakeVertex(ox , oy, oz)
+pieceCenter2 = geompy.MakeVertex(ox+arete , oy, oz)
+pieceCenter3 = geompy.MakeVertex(ox , oy, oz+arete)
+pieceCenter4 = geompy.MakeVertex(ox+arete , oy, oz+arete)
+
+piecePass1 = geompy.MakeVertex(ox+demi , oy, oz+r3)
+piecePass2 = geompy.MakeVertex(ox+arete-demi , oy, oz+r3)
+piecePass3 = geompy.MakeVertex(ox+arete-demi , oy, oz+arete-r3)
+piecePass4 = geompy.MakeVertex(ox+demi , oy, oz+arete-r3)
+
+# Edges
+# -----
+
+pieceEdgeSquare1 = geompy.MakeEdge(piecePoint111, piecePoint211)
+pieceEdgeSquare2 = geompy.MakeEdge(piecePoint114, piecePoint214)
+pieceEdgeSquare3 = geompy.MakeEdge(piecePoint112, piecePoint113)
+pieceEdgeSquare4 = geompy.MakeEdge(piecePoint212, piecePoint213)
+
+pieceEdgeDiagonal1 = geompy.MakeEdge(piecePoint111, piecePoint213)
+pieceEdgeDiagonal2 = geompy.MakeEdge(piecePoint112, piecePoint214)
+
+pieceEdgeArc1 = geompy.MakeArc(piecePoint111, piecePass1, piecePoint112)
+pieceEdgeArc2 = geompy.MakeArc(piecePoint211, piecePass2, piecePoint212)
+pieceEdgeArc3 = geompy.MakeArc(piecePoint213, piecePass3, piecePoint214)
+pieceEdgeArc4 = geompy.MakeArc(piecePoint113, piecePass4, piecePoint114)
+
+# Faces
+# -----
+
+pieceFace1 = geompy.MakeQuad(pieceEdgeSquare1, pieceEdgeArc2, pieceEdgeSquare4, pieceEdgeDiagonal1)
+pieceFace2 = geompy.MakeQuad(pieceEdgeSquare2, pieceEdgeArc4, pieceEdgeSquare3, pieceEdgeDiagonal2)
+
+pieceFace3 = geompy.MakeQuad(pieceEdgeArc1, pieceEdgeDiagonal1, pieceEdgeArc3, pieceEdgeDiagonal2)
+
+# Solids
+# ------
+
+pieceVector = geompy.MakeVectorDXDYDZ(0, 1, 0)
+
+pieceSolid1 = geompy.MakePrismVecH(pieceFace1, pieceVector, hauteur)
+pieceSolid2 = geompy.MakePrismVecH(pieceFace2, pieceVector, hauteur)
+pieceSolid3 = geompy.MakePrismVecH(pieceFace3, pieceVector, hauteur)
+
+# Compound and glue
+# -----------------
+
+c_cpd = geompy.MakeCompound([pieceSolid1, pieceSolid2, pieceSolid3])
+
+piece = geompy.MakeGlueFaces(c_cpd, 1.e-5)
+
+# Add in study
+# ------------
+
+piece_id = geompy.addToStudy(piece, "ex09_grid4build")
+
+# Meshing
+# =======
+
+# Create a hexahedral mesh
+# ------------------------
+
+hexa = smesh.Mesh(piece, "ex09_grid4build:hexa")
+
+algo = hexa.Segment()
+algo.NumberOfSegments(6)
+
+hexa.Quadrangle()
+
+hexa.Hexahedron()
+
+# Mesh calculus
+# -------------
+
+hexa.Compute()
+
+# Update object browser
+# ---------------------
+
+salome.sg.updateObjBrowser()
