--- /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
+#
+
+#==============================================================================
+# Info.
+# Bug (from script, bug) : SMESH_demo_hexa2_upd.py, PAL6781
+# Modified : 25/11/2004
+# Author : Kovaltchuk Alexey
+# Project : PAL/SALOME
+#==============================================================================
+# Tetrahedrization of a geometry (box minus a inner cylinder).
+# Hypothesis and algorithms for the mesh generation are not global:
+# the mesh of some edges is thinner
+#
+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
+
+
+# -----------------------------------------------------------------------------
+
+ShapeTypeShell = 3
+ShapeTypeFace = 4
+ShapeTypeEdge = 6
+
+a = math.sqrt(2.)/4.
+ma = - a
+zero = 0.
+un = 1.
+mun= - un
+demi = 1./2.
+
+Orig = geompy.MakeVertex(zero,zero,zero)
+P0 = geompy.MakeVertex(a,a,zero)
+P1 = geompy.MakeVertex(zero,demi,zero)
+P2 = geompy.MakeVertex(ma,a,zero)
+P3 = geompy.MakeVertex(mun,un,zero)
+P4 = geompy.MakeVertex(un,un,zero)
+P5 = geompy.MakeVertex(zero,zero,un)
+
+arc = geompy.MakeArc(P0,P1,P2)
+e1 = geompy.MakeEdge(P2,P3)
+e2 = geompy.MakeEdge(P3,P4)
+e3 = geompy.MakeEdge(P4,P0)
+
+list = []
+list.append(arc)
+list.append(e1)
+list.append(e2)
+list.append(e3)
+
+wire = geompy.MakeWire(list)
+face = geompy.MakeFace(wire,1)
+
+dir = geompy.MakeVector(Orig,P5)
+vol1 = geompy.MakePipe(face,dir)
+
+angle = math.pi/2.
+#dir = geom.MakeVector(Orig,P5)
+vol2 = geompy.MakeRotation(vol1,dir,angle)
+
+vol3 = geompy.MakeRotation(vol2,dir,angle)
+
+vol4 = geompy.MakeRotation(vol3,dir,angle)
+
+list = []
+list.append(vol1)
+list.append(vol2)
+list.append(vol3)
+list.append(vol4)
+
+volComp = geompy.MakeCompound(list)
+
+tol3d = 1.e-3
+vol = geompy.MakeGlueFaces(volComp,tol3d)
+idVol = geompy.addToStudy(vol,"volume")
+
+print("Analysis of the final volume:")
+subShellList = geompy.SubShapeAllSorted(vol,ShapeTypeShell)
+subFaceList = geompy.SubShapeAllSorted(vol,ShapeTypeFace)
+subEdgeList = geompy.SubShapeAllSorted(vol,ShapeTypeEdge)
+
+print("number of Shells in the volume : ",len(subShellList))
+print("number of Faces in the volume : ",len(subFaceList))
+print("number of Edges in the volume : ",len(subEdgeList))
+
+idSubEdge = []
+for k in range(len(subEdgeList)):
+ idSubEdge.append(geompy.addToStudyInFather(vol,subEdgeList[k],"SubEdge"+str(k)))
+
+edgeZ = []
+edgeZ.append(subEdgeList[0])
+edgeZ.append(subEdgeList[3])
+edgeZ.append(subEdgeList[10])
+edgeZ.append(subEdgeList[11])
+edgeZ.append(subEdgeList[20])
+edgeZ.append(subEdgeList[21])
+edgeZ.append(subEdgeList[28])
+edgeZ.append(subEdgeList[31])
+
+idEdgeZ = []
+for i in range(8):
+ idEdgeZ.append(geompy.addToStudyInFather(vol,edgeZ[i],"EdgeZ"+str(i+1)))
+
+### ---------------------------- SMESH --------------------------------------
+smesh.UpdateStudy()
+
+# ---- init a Mesh with the volume
+
+mesh = smesh.Mesh(vol, "meshVolume")
+
+# ---- set Hypothesis and Algorithm to main shape
+
+print("-------------------------- NumberOfSegments the global one")
+
+numberOfSegments = 10
+
+regular1D = mesh.Segment()
+regular1D.SetName("Wire Discretisation")
+hypNbSeg = regular1D.NumberOfSegments(numberOfSegments)
+print(hypNbSeg.GetName())
+print(hypNbSeg.GetId())
+print(hypNbSeg.GetNumberOfSegments())
+smesh.SetName(hypNbSeg, "NumberOfSegments")
+
+
+print("-------------------------- Quadrangle_2D")
+
+quad2D=mesh.Quadrangle()
+quad2D.SetName("Quadrangle_2D")
+
+print("-------------------------- Hexa_3D")
+
+hexa3D=mesh.Hexahedron()
+hexa3D.SetName("Hexa_3D")
+
+
+print("-------------------------- NumberOfSegments in the Z direction")
+
+numberOfSegmentsZ = 40
+
+for i in range(8):
+ print("-------------------------- add hypothesis to edge in the Z directions", (i+1))
+
+ algo = mesh.Segment(edgeZ[i])
+ hyp = algo.NumberOfSegments(numberOfSegmentsZ)
+ smesh.SetName(hyp, "NumberOfSegmentsZ")
+ smesh.SetName(algo.GetSubMesh(), "SubMeshEdgeZ_"+str(i+1))
+
+
+salome.sg.updateObjBrowser()
+
+print("-------------------------- compute the mesh of the volume")
+
+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 MeshBox :")
+ 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("problem when Computing the mesh")
+
+salome.sg.updateObjBrowser()
