smesh/src/SMESH_SWIG/SMESH_mechanic_tetra.py

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# -*- coding: iso-8859-1 -*-
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# Copyright (C) 2007-2014 CEA/DEN, EDF R&D, 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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# File : SMESH_withHole.py
# Author : Lucien PIGNOLONI
# Module : SMESH
# $Header$
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#
import salome
salome.salome_init()
import GEOM
from salome.geom import geomBuilder
geompy = geomBuilder.New(salome.myStudy)
import SMESH, SALOMEDS
from salome.smesh import smeshBuilder
smesh = smeshBuilder.New(salome.myStudy)
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# ---------------------------- GEOM --------------------------------------
# ---- define contigous arcs and segment to define a closed wire
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p1 = geompy.MakeVertex( 100.0, 0.0, 0.0 )
p2 = geompy.MakeVertex( 50.0, 50.0, 0.0 )
p3 = geompy.MakeVertex( 100.0, 100.0, 0.0 )
arc1 = geompy.MakeArc( p1, p2, p3 )
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p4 = geompy.MakeVertex( 170.0, 100.0, 0.0 )
seg1 = geompy.MakeVector( p3, p4 )
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p5 = geompy.MakeVertex( 200.0, 70.0, 0.0 )
p6 = geompy.MakeVertex( 170.0, 40.0, 0.0 )
arc2 = geompy.MakeArc( p4, p5, p6 )
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p7 = geompy.MakeVertex( 120.0, 30.0, 0.0 )
arc3 = geompy.MakeArc( p6, p7, p1 )
# ---- define a closed wire with arcs and segment
List1 = []
List1.append( arc1 )
List1.append( seg1 )
List1.append( arc2 )
List1.append( arc3 )
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wire1 = geompy.MakeWire( List1 )
Id_wire1 = geompy.addToStudy( wire1, "wire1" )
# ---- define a planar face with wire
WantPlanarFace = 1 #True
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face1 = geompy.MakeFace( wire1, WantPlanarFace )
Id_face1 = geompy.addToStudy( face1, "face1" )
# ---- create a shape by extrusion
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pO = geompy.MakeVertex( 0.0, 0.0, 0.0 )
pz = geompy.MakeVertex( 0.0, 0.0, 100.0 )
vz = geompy.MakeVector( pO, pz )
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prism1 = geompy.MakePrismVecH( face1, vz, 100.0 )
Id_prism1 = geompy.addToStudy( prism1, "prism1")
# ---- create two cylinders
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pc1 = geompy.MakeVertex( 90.0, 50.0, -40.0 )
pc2 = geompy.MakeVertex( 170.0, 70.0, -40.0 )
radius = 20.0
height = 180.0
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cyl1 = geompy.MakeCylinder( pc1, vz, radius, height )
cyl2 = geompy.MakeCylinder( pc2, vz, radius, height )
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Id_Cyl1 = geompy.addToStudy( cyl1, "cyl1" )
Id_Cyl2 = geompy.addToStudy( cyl2, "cyl2" )
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# ---- cut with cyl1
shape = geompy.MakeBoolean( prism1, cyl1, 2 )
# ---- fuse with cyl2 to obtain the final mechanic piece :)
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mechanic = geompy.MakeBoolean( shape, cyl2, 3 )
Id_mechanic = geompy.addToStudy( mechanic, "mechanic" )
# ---- Analysis of the geometry
print "Analysis of the geometry mechanic :"
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subShellList = geompy.SubShapeAll(mechanic,geompy.ShapeType["SHELL"])
subFaceList = geompy.SubShapeAll(mechanic,geompy.ShapeType["FACE"])
subEdgeList = geompy.SubShapeAll(mechanic,geompy.ShapeType["EDGE"])
print "number of Shells in mechanic : ",len(subShellList)
print "number of Faces in mechanic : ",len(subFaceList)
print "number of Edges in mechanic : ",len(subEdgeList)
### ---------------------------- SMESH --------------------------------------
shape_mesh = salome.IDToObject( Id_mechanic )
mesh = smesh.Mesh(shape_mesh, "Mesh_mechanic_tetra")
print "-------------------------- add hypothesis to main mechanic"
numberOfSegment = 10
algo1 = mesh.Segment()
hypNbSeg = algo1.NumberOfSegments(numberOfSegment)
print hypNbSeg.GetName()
print hypNbSeg.GetId()
print hypNbSeg.GetNumberOfSegments()
smesh.SetName(hypNbSeg, "NumberOfSegments_" + str(numberOfSegment))
maxElementArea = 20
algo2 = mesh.Triangle(smeshBuilder.MEFISTO)
hypArea = algo2.MaxElementArea(maxElementArea)
print hypArea.GetName()
print hypArea.GetId()
print hypArea.GetMaxElementArea()
smesh.SetName(hypArea, "MaxElementArea_" + str(maxElementArea))
maxElementVolume = 20
algo3 = mesh.Tetrahedron(smeshBuilder.NETGEN)
hypVolume = algo3.MaxElementVolume(maxElementVolume)
print hypVolume.GetName()
print hypVolume.GetId()
print hypVolume.GetMaxElementVolume()
smesh.SetName(hypVolume, "maxElementVolume_" + str(maxElementVolume))
print "-------------------------- compute the mesh of the mechanic piece"
mesh.Compute()
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print "Information about the Mesh_mechanic_tetra:"
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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 quadrangles: ", mesh.NbQuadrangles()
print "Number of volumes : ", mesh.NbVolumes()
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print "Number of tetrahedrons: ", mesh.NbTetras()
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salome.sg.updateObjBrowser(1)