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https://git.salome-platform.org/gitpub/modules/smesh.git
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141 lines
3.1 KiB
Python
141 lines
3.1 KiB
Python
# -*- coding: iso-8859-1 -*-
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# Copyright (C) 2007-2024 CEA, EDF, OPEN CASCADE
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#
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# Copyright (C) 2003-2007 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
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# 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
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# modify it under the terms of the GNU Lesser General Public
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# 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,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# 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
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# License along with this library; if not, write to the Free Software
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# 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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# ==================================
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#
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import salome
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salome.salome_init()
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import GEOM
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from salome.geom import geomBuilder
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geompy = geomBuilder.New()
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import SMESH, SALOMEDS
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from salome.smesh import smeshBuilder
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smesh = smeshBuilder.New()
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# Geometry
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# ========
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# an assembly of a box, a cylinder and a truncated cone meshed with tetrahedral.
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# Define values
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# -------------
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name = "ex21_lamp"
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cote = 60
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section = 20
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size = 200
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radius_1 = 80
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radius_2 = 40
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height = 100
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# Build a box
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# -----------
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box = geompy.MakeBox(-cote, -cote, -cote, +cote, +cote, +cote)
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# Build a cylinder
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# ----------------
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pt1 = geompy.MakeVertex(0, 0, cote/3)
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di1 = geompy.MakeVectorDXDYDZ(0, 0, 1)
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cyl = geompy.MakeCylinder(pt1, di1, section, size)
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# Build a truncated cone
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# ----------------------
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pt2 = geompy.MakeVertex(0, 0, size)
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cone = geompy.MakeCone(pt2, di1, radius_1, radius_2, height)
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# Fuse
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# ----
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box_cyl = geompy.MakeFuse(box, cyl)
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piece = geompy.MakeFuse(box_cyl, cone)
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# Add in study
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# ------------
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geompy.addToStudy(piece, name)
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# Create a group of faces
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# -----------------------
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group = geompy.CreateGroup(piece, geompy.ShapeType["FACE"])
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group_name = name + "_grp"
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geompy.addToStudy(group, group_name)
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group.SetName(group_name)
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# Add faces in the group
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# ----------------------
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faces = geompy.SubShapeAllIDs(piece, geompy.ShapeType["FACE"])
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geompy.UnionIDs(group, faces)
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# Create a mesh
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# =============
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# Define a mesh on a geometry
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# ---------------------------
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tetra = smesh.Mesh(piece, name)
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# Define 1D hypothesis
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# --------------------
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algo1d = tetra.Segment()
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algo1d.LocalLength(10)
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# Define 2D hypothesis
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# --------------------
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algo2d = tetra.Triangle()
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algo2d.LengthFromEdges()
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# Define 3D hypothesis
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# --------------------
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algo3d = tetra.Tetrahedron(smeshBuilder.NETGEN)
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algo3d.MaxElementVolume(100)
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# Compute the mesh
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# ----------------
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isDone = tetra.Compute()
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if not isDone:
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raise Exception("Error when computing Mesh")
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# Create a groupe of faces
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# ------------------------
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tetra.Group(group)
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# Update object browser
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# ---------------------
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salome.sg.updateObjBrowser() |