smesh/test/SMESH_box_tetra.py

#  -*- coding: iso-8859-1 -*-
# Copyright (C) 2007-2023  CEA, EDF, 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 a simple box. 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 a box

box = geompy.MakeBox(0., 0., 0., 100., 200., 300.)

idbox = geompy.addToStudy(box, "box")

print("Analysis of the geometry box :")
subShellList = geompy.SubShapeAll(box, geompy.ShapeType["SHELL"])
subFaceList  = geompy.SubShapeAll(box, geompy.ShapeType["FACE"])
subEdgeList  = geompy.SubShapeAll(box, geompy.ShapeType["EDGE"])

print("number of Shells in box : ", len(subShellList))
print("number of Faces  in box : ", len(subFaceList))
print("number of Edges  in box : ", len(subEdgeList))


### ---------------------------- SMESH --------------------------------------

# ---- init a Mesh with the box

mesh = smesh.Mesh(box, "MeshBox")

# ---- 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

triangle = mesh.Triangle()
hypArea = triangle.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 the mesh of the box")
ret = mesh.Compute()
print(ret)
if not ret:
    raise Exception("Error when computing Mesh")

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())

salome.sg.updateObjBrowser()