--- /dev/null
+# -*- 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
+#
+
+# Quadrangulation of the geometry generated by the Python script
+# SMESH_mechanic.py
+# The new Netgen algorithm is used that discretizes baoundaries itself
+#
+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()
+
+# ---------------------------- GEOM --------------------------------------
+
+# ---- define contiguous arcs and segment to define a closed wire
+p1 = geompy.MakeVertex( 100.0, 0.0, 0.0 )
+p2 = geompy.MakeVertex( 50.0, 50.0, 0.0 )
+p3 = geompy.MakeVertex( 100.0, 100.0, 0.0 )
+arc1 = geompy.MakeArc( p1, p2, p3 )
+
+p4 = geompy.MakeVertex( 170.0, 100.0, 0.0 )
+seg1 = geompy.MakeVector( p3, p4 )
+
+p5 = geompy.MakeVertex( 200.0, 70.0, 0.0 )
+p6 = geompy.MakeVertex( 170.0, 40.0, 0.0 )
+arc2 = geompy.MakeArc( p4, p5, p6 )
+
+p7 = geompy.MakeVertex( 120.0, 30.0, 0.0 )
+arc3 = geompy.MakeArc( p6, p7, p1 )
+
+# ---- define a closed wire with arcs and segment
+List1 = []
+List1.append( arc1 )
+List1.append( seg1 )
+List1.append( arc2 )
+List1.append( arc3 )
+
+wire1 = geompy.MakeWire( List1 )
+Id_wire1 = geompy.addToStudy( wire1, "wire1" )
+
+# ---- define a planar face with wire
+WantPlanarFace = 1 #True
+face1 = geompy.MakeFace( wire1, WantPlanarFace )
+Id_face1 = geompy.addToStudy( face1, "face1" )
+
+# ---- create a shape by extrusion
+pO = geompy.MakeVertex( 0.0, 0.0, 0.0 )
+pz = geompy.MakeVertex( 0.0, 0.0, 100.0 )
+vz = geompy.MakeVector( pO, pz )
+
+prism1 = geompy.MakePrismVecH( face1, vz, 100.0 )
+Id_prism1 = geompy.addToStudy( prism1, "prism1")
+
+# ---- create two cylinders
+
+pc1 = geompy.MakeVertex( 90.0, 50.0, -40.0 )
+pc2 = geompy.MakeVertex( 170.0, 70.0, -40.0 )
+radius = 20.0
+height = 180.0
+cyl1 = geompy.MakeCylinder( pc1, vz, radius, height )
+cyl2 = geompy.MakeCylinder( pc2, vz, radius, height )
+
+Id_Cyl1 = geompy.addToStudy( cyl1, "cyl1" )
+Id_Cyl2 = geompy.addToStudy( cyl2, "cyl2" )
+
+# ---- cut with cyl1
+shape = geompy.MakeBoolean( prism1, cyl1, 2 )
+
+# ---- fuse with cyl2 to obtain the final mechanic piece :)
+mechanic = geompy.MakeBoolean( shape, cyl2, 3 )
+Id_mechanic = geompy.addToStudy( mechanic, "mechanic" )
+
+# ---- Analysis of the geometry
+
+print("Analysis of the geometry mechanic :")
+
+subShellList = geompy.SubShapeAll(mechanic,geompy.ShapeType["SHELL"])
+subFaceList = geompy.SubShapeAll(mechanic,geompy.ShapeType["FACE"])
+subEdgeList = geompy.SubShapeAll(mechanic,geompy.ShapeType["EDGE"])
+
+print("number of Shells in mechanic : ",len(subShellList))
+print("number of Faces in mechanic : ",len(subFaceList))
+print("number of Edges in mechanic : ",len(subEdgeList))
+
+### ---------------------------- SMESH --------------------------------------
+
+print("-------------------------- create Mesh, algorithm, hypothesis")
+
+mesh = smesh.Mesh(mechanic, "Mesh_mechanic");
+netgen = mesh.Triangle(smeshBuilder.NETGEN)
+netgen.SetMaxSize( 50 )
+#netgen.SetSecondOrder( 0 )
+netgen.SetFineness( smeshBuilder.Fine )
+netgen.SetQuadAllowed( 1 )
+#netgen.SetOptimize( 1 )
+
+print("-------------------------- compute mesh")
+ret = mesh.Compute()
+print(ret)
+if ret != 0:
+ print("Information about the MeshcompShel:")
+ print("Number of nodes : ", mesh.NbNodes())
+ print("Number of edges : ", mesh.NbEdges())
+ print("Number of faces : ", mesh.NbFaces())
+ print("Number of triangles : ", mesh.NbTriangles())
+ print("Number of quadrangles : ", mesh.NbQuadrangles())
+ print("Number of volumes : ", mesh.NbVolumes())
+ print("Number of tetrahedrons : ", mesh.NbTetras())
+
+else:
+ print("problem when computing the mesh")
+
+salome.sg.updateObjBrowser()
