smesh/test/SMESH_box3_tetra.py

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# -*- coding: iso-8859-1 -*-
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# Copyright (C) 2007-2023 CEA, EDF, OPEN CASCADE
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#
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# Copyright (C) 2003-2007 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
# CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
#
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# 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
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# version 2.1 of the License, or (at your option) any later version.
#
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# 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.
#
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# 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
#
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# See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
#
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# 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
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geompy = geomBuilder.New()
import SMESH, SALOMEDS
from salome.smesh import smeshBuilder
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smesh = smeshBuilder.New()
# ---- define 3 boxes box1, box2 and box3
box1 = geompy.MakeBox(0., 0., 0., 100., 200., 300.)
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idbox1 = geompy.addToStudy(box1, "box1")
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print("Analysis of the geometry box1 :")
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subShellList = geompy.SubShapeAll(box1, geompy.ShapeType["SHELL"])
subFaceList = geompy.SubShapeAll(box1, geompy.ShapeType["FACE"])
subEdgeList = geompy.SubShapeAll(box1, geompy.ShapeType["EDGE"])
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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.)
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idbox2 = geompy.addToStudy(box2, "box2")
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print("Analysis of the geometry box2 :")
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subShellList = geompy.SubShapeAll(box2, geompy.ShapeType["SHELL"])
subFaceList = geompy.SubShapeAll(box2, geompy.ShapeType["FACE"])
subEdgeList = geompy.SubShapeAll(box2, geompy.ShapeType["EDGE"])
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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.)
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idbox3 = geompy.addToStudy(box3, "box3")
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print("Analysis of the geometry box3 :")
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subShellList = geompy.SubShapeAll(box3, geompy.ShapeType["SHELL"])
subFaceList = geompy.SubShapeAll(box3, geompy.ShapeType["FACE"])
subEdgeList = geompy.SubShapeAll(box3, geompy.ShapeType["EDGE"])
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print("number of Shells in box3 : ", len(subShellList))
print("number of Faces in box3 : ", len(subFaceList))
print("number of Edges in box3 : ", len(subEdgeList))
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shell = geompy.MakePartition([box1, box2, box3])
idshell = geompy.addToStudy(shell,"shell")
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print("Analysis of the geometry shell (union of box1, box2 and box3) :")
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subShellList = geompy.SubShapeAll(shell, geompy.ShapeType["SHELL"])
subFaceList = geompy.SubShapeAll(shell, geompy.ShapeType["FACE"])
subEdgeList = geompy.SubShapeAll(shell, geompy.ShapeType["EDGE"])
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print("number of Shells in shell : ", len(subShellList))
print("number of Faces in shell : ", len(subFaceList))
print("number of Edges in shell : ", len(subEdgeList))
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### ---------------------------- SMESH --------------------------------------
# ---- init a Mesh with the shell
mesh = smesh.Mesh(shell, "MeshBox3")
# ---- set Hypothesis and Algorithm
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print("-------------------------- NumberOfSegments")
numberOfSegments = 10
regular1D = mesh.Segment()
hypNbSeg = regular1D.NumberOfSegments(numberOfSegments)
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print(hypNbSeg.GetName())
print(hypNbSeg.GetId())
print(hypNbSeg.GetNumberOfSegments())
smesh.SetName(hypNbSeg, "NumberOfSegments_" + str(numberOfSegments))
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print("-------------------------- MaxElementArea")
maxElementArea = 500
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triangle = mesh.Triangle()
hypArea = triangle.MaxElementArea(maxElementArea)
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print(hypArea.GetName())
print(hypArea.GetId())
print(hypArea.GetMaxElementArea())
smesh.SetName(hypArea, "MaxElementArea_" + str(maxElementArea))
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print("-------------------------- MaxElementVolume")
maxElementVolume = 500
netgen3D = mesh.Tetrahedron(smeshBuilder.NETGEN)
hypVolume = netgen3D.MaxElementVolume(maxElementVolume)
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print(hypVolume.GetName())
print(hypVolume.GetId())
print(hypVolume.GetMaxElementVolume())
smesh.SetName(hypVolume, "MaxElementVolume_" + str(maxElementVolume))
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print("-------------------------- compute shell")
ret = mesh.Compute()
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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 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())
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salome.sg.updateObjBrowser()