smesh/test/SMESH_Partition1_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
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# Lesser General Public License for more details.
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# 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 generated by the Python script GEOM_Partition1.py
# Hypothesis and algorithms for the mesh generation are global
# -- Rayon de la bariere
#
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()

from math import sqrt


#---------------------------------------------------------------

barier_height = 7.0
barier_radius = 5.6 / 2 # Rayon de la bariere
colis_radius = 1.0 / 2  # Rayon du colis
colis_step = 2.0        # Distance s<>parant deux colis
cc_width = 0.11         # Epaisseur du complement de colisage

# --

cc_radius = colis_radius + cc_width
colis_center = sqrt(2.0)*colis_step/2

# --

boolean_common  = 1
boolean_cut     = 2
boolean_fuse    = 3
boolean_section = 4

# --

p0 = geompy.MakeVertex(0.,0.,0.)
vz = geompy.MakeVectorDXDYDZ(0.,0.,1.)

# --

barier = geompy.MakeCylinder(p0, vz, barier_radius, barier_height)

# --

colis = geompy.MakeCylinder(p0, vz, colis_radius, barier_height)
cc    = geompy.MakeCylinder(p0, vz,    cc_radius, barier_height)

colis_cc = geompy.MakeCompound([colis, cc])
colis_cc = geompy.MakeTranslation(colis_cc, colis_center, 0.0, 0.0)

colis_cc_multi = geompy.MultiRotate1D(colis_cc, vz, 4)

# --

Compound1 = geompy.MakeCompound([colis_cc_multi, barier])
SubShape_theShape = geompy.SubShapeAll(Compound1,geompy.ShapeType["SOLID"])
alveole = geompy.MakePartition(SubShape_theShape)

print("Analysis of the geometry to mesh (right after the Partition) :")

subShellList = geompy.SubShapeAll(alveole, geompy.ShapeType["SHELL"])
subFaceList  = geompy.SubShapeAll(alveole, geompy.ShapeType["FACE"])
subEdgeList  = geompy.SubShapeAll(alveole, geompy.ShapeType["EDGE"])

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

subshapes = geompy.SubShapeAll(alveole, geompy.ShapeType["SHAPE"])

## there are 9 sub-shapes

comp1 = geompy.MakeCompound( [ subshapes[0], subshapes[1] ] )
comp2 = geompy.MakeCompound( [ subshapes[2], subshapes[3] ] )
comp3 = geompy.MakeCompound( [ subshapes[4], subshapes[5] ] )
comp4 = geompy.MakeCompound( [ subshapes[6], subshapes[7] ] )

compGOs = []
compGOs.append( comp1 )
compGOs.append( comp2 )
compGOs.append( comp3 )
compGOs.append( comp4 )
comp = geompy.MakeCompound( compGOs )

alveole = geompy.MakeCompound( [ comp, subshapes[8] ])

idalveole = geompy.addToStudy(alveole, "alveole")

print("Analysis of the geometry to mesh (right after the MakeCompound) :")

subShellList = geompy.SubShapeAll(alveole, geompy.ShapeType["SHELL"])
subFaceList  = geompy.SubShapeAll(alveole, geompy.ShapeType["FACE"])
subEdgeList  = geompy.SubShapeAll(alveole, geompy.ShapeType["EDGE"])

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

status = geompy.CheckShape(alveole)
print(" check status ", status)


# ---- init a Mesh with the alveole
shape_mesh = salome.IDToObject( idalveole )

mesh = smesh.Mesh(shape_mesh, "MeshAlveole")

print("-------------------------- create Hypothesis (In this case global hypothesis are used)")

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 = 0.1

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 = 0.5

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 alveole ")
ret = mesh.Compute()
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 Mesh_mechanic:")
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()