--- /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
+#
+
+# Tetrahedrization of the geometry union of 3 boxes aligned where the middle
+# one has a race in common with the two others.
+# Hypothesis and algorithms for the mesh generation are global
+#
+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()
+
+# ---- define 3 boxes box1, box2 and box3
+
+box1 = geompy.MakeBox(0., 0., 0., 100., 200., 300.)
+
+idbox1 = geompy.addToStudy(box1, "box1")
+
+print("Analysis of the geometry box1 :")
+subShellList = geompy.SubShapeAll(box1, geompy.ShapeType["SHELL"])
+subFaceList = geompy.SubShapeAll(box1, geompy.ShapeType["FACE"])
+subEdgeList = geompy.SubShapeAll(box1, geompy.ShapeType["EDGE"])
+
+print("number of Shells in box1 : ", len(subShellList))
+print("number of Faces in box1 : ", len(subFaceList))
+print("number of Edges in box1 : ", len(subEdgeList))
+
+box2 = geompy.MakeBox(100., 0., 0., 200., 200., 300.)
+
+idbox2 = geompy.addToStudy(box2, "box2")
+
+print("Analysis of the geometry box2 :")
+subShellList = geompy.SubShapeAll(box2, geompy.ShapeType["SHELL"])
+subFaceList = geompy.SubShapeAll(box2, geompy.ShapeType["FACE"])
+subEdgeList = geompy.SubShapeAll(box2, geompy.ShapeType["EDGE"])
+
+print("number of Shells in box2 : ", len(subShellList))
+print("number of Faces in box2 : ", len(subFaceList))
+print("number of Edges in box2 : ", len(subEdgeList))
+
+box3 = geompy.MakeBox(0., 0., 300., 200., 200., 500.)
+
+idbox3 = geompy.addToStudy(box3, "box3")
+
+print("Analysis of the geometry box3 :")
+subShellList = geompy.SubShapeAll(box3, geompy.ShapeType["SHELL"])
+subFaceList = geompy.SubShapeAll(box3, geompy.ShapeType["FACE"])
+subEdgeList = geompy.SubShapeAll(box3, geompy.ShapeType["EDGE"])
+
+print("number of Shells in box3 : ", len(subShellList))
+print("number of Faces in box3 : ", len(subFaceList))
+print("number of Edges in box3 : ", len(subEdgeList))
+
+shell = geompy.MakePartition([box1, box2, box3])
+idshell = geompy.addToStudy(shell,"shell")
+
+print("Analysis of the geometry shell (union of box1, box2 and box3) :")
+subShellList = geompy.SubShapeAll(shell, geompy.ShapeType["SHELL"])
+subFaceList = geompy.SubShapeAll(shell, geompy.ShapeType["FACE"])
+subEdgeList = geompy.SubShapeAll(shell, geompy.ShapeType["EDGE"])
+
+print("number of Shells in shell : ", len(subShellList))
+print("number of Faces in shell : ", len(subFaceList))
+print("number of Edges in shell : ", len(subEdgeList))
+
+
+### ---------------------------- SMESH --------------------------------------
+
+# ---- init a Mesh with the shell
+
+mesh = smesh.Mesh(shell, "MeshBox3")
+
+
+# ---- set Hypothesis and Algorithm
+
+print("-------------------------- NumberOfSegments")
+
+numberOfSegments = 10
+
+regular1D = mesh.Segment()
+hypNbSeg = regular1D.NumberOfSegments(numberOfSegments)
+print(hypNbSeg.GetName())
+print(hypNbSeg.GetId())
+print(hypNbSeg.GetNumberOfSegments())
+smesh.SetName(hypNbSeg, "NumberOfSegments_" + str(numberOfSegments))
+
+print("-------------------------- MaxElementArea")
+
+maxElementArea = 500
+
+mefisto2D = mesh.Triangle()
+hypArea = mefisto2D.MaxElementArea(maxElementArea)
+print(hypArea.GetName())
+print(hypArea.GetId())
+print(hypArea.GetMaxElementArea())
+smesh.SetName(hypArea, "MaxElementArea_" + str(maxElementArea))
+
+print("-------------------------- MaxElementVolume")
+
+maxElementVolume = 500
+
+netgen3D = mesh.Tetrahedron(smeshBuilder.NETGEN)
+hypVolume = netgen3D.MaxElementVolume(maxElementVolume)
+print(hypVolume.GetName())
+print(hypVolume.GetId())
+print(hypVolume.GetMaxElementVolume())
+smesh.SetName(hypVolume, "MaxElementVolume_" + str(maxElementVolume))
+
+print("-------------------------- compute shell")
+ret = mesh.Compute()
+print(ret)
+if ret != 0:
+ log = mesh.GetLog(0) # no erase trace
+ # for linelog in log:
+ # print(linelog)
+ print("Information about the MeshBox3:")
+ 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 volumes : ", mesh.NbVolumes())
+ print("Number of tetrahedrons: ", mesh.NbTetras())
+else:
+ print("probleme when computing the mesh")
+
+salome.sg.updateObjBrowser()
