smesh/test/SMESH_Sphere.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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#
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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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#
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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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#
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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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#
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# See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
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#
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# GEOM GEOM_SWIG : binding of C++ implementation with Python
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# File : GEOM_Sphere.py
# Author : Damien COQUERET, Open CASCADE
# Module : GEOM
# $Header:
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#
import salome
salome.salome_init()
import GEOM
from salome.geom import geomBuilder
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geompy = geomBuilder.New()
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import SMESH, SALOMEDS
from salome.smesh import smeshBuilder
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smesh = smeshBuilder.New()
import math
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# It is an example of creating a hexahedrical mesh on a sphere.
#
# Used approach allows to avoid problems with degenerated and
# seam edges without special processing of geometrical shapes
#-----------------------------------------------------------------------
#Variables
Radius = 100.
Dist = Radius / 2.
Factor = 2.5
Angle90 = math.pi / 2.
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NbSeg = 10
PointsList = []
ShapesList = []
#Basic Elements
P0 = geompy.MakeVertex(0., 0., 0.)
P1 = geompy.MakeVertex(-Dist, -Dist, -Dist)
P2 = geompy.MakeVertex(-Dist, -Dist, Dist)
P3 = geompy.MakeVertex(-Dist, Dist, Dist)
P4 = geompy.MakeVertex(-Dist, Dist, -Dist)
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VZ = geompy.MakeVectorDXDYDZ(0., 0., 1.)
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#Construction Elements
PointsList.append(P1)
PointsList.append(P2)
PointsList.append(P3)
PointsList.append(P4)
PointsList.append(P1)
PolyLine = geompy.MakePolyline(PointsList)
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Face1 = geompy.MakeFace(PolyLine, 1)
Face2 = geompy.MakeScaleTransform(Face1, P0, Factor)
Face3 = geompy.MakeScaleTransform(Face1, P0, -1.)
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#Models
Sphere = geompy.MakeSphereR(Radius)
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Block = geompy.MakeHexa2Faces(Face1, Face2)
Cube = geompy.MakeHexa2Faces(Face1, Face3)
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Common1 = geompy.MakeBoolean(Sphere, Block, 1)
Common2 = geompy.MakeRotation(Common1, VZ, Angle90)
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MultiBlock1 = geompy.MakeMultiTransformation1D(Common1, 20, -1, 3)
MultiBlock2 = geompy.MakeMultiTransformation1D(Common2, 30, -1, 3)
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#Reconstruct sphere from several blocks
ShapesList.append(Cube)
ShapesList.append(MultiBlock1)
ShapesList.append(MultiBlock2)
Compound = geompy.MakeCompound(ShapesList)
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Result = geompy.MakeGlueFaces(Compound, 0.1)
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#addToStudy
Id_Sphere = geompy.addToStudy(Sphere, "Sphere")
Id_Cube = geompy.addToStudy(Cube, "Cube")
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Id_Common1 = geompy.addToStudy(Common1, "Common1")
Id_Common2 = geompy.addToStudy(Common2, "Common2")
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Id_MultiBlock1 = geompy.addToStudy(MultiBlock1, "MultiBlock1")
Id_MultiBlock2 = geompy.addToStudy(MultiBlock2, "MultiBlock2")
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Id_Result = geompy.addToStudy(Result, "Result")
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#-----------------------------------------------------------------------
#Meshing
my_hexa = smesh.Mesh(Result, "Sphere_Mesh")
algo = my_hexa.Segment()
algo.NumberOfSegments(NbSeg)
my_hexa.Quadrangle()
my_hexa.Hexahedron()
isDone = my_hexa.Compute()
if not isDone:
raise Exception("Error when computing Mesh")
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salome.sg.updateObjBrowser()