# Copyright (C) 2003 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 # version 2.1 of the License. # # 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. # # 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 # # See http://www.opencascade.org/SALOME/ or email : webmaster.salome@opencascade.org # # # # File : SMESH_withHole.py # Author : Lucien PIGNOLONI # Module : SMESH # $Header$ import salome import geompy geom = geompy.geom smesh = salome.lcc.FindOrLoadComponent("FactoryServer", "SMESH") smesh.SetCurrentStudy(salome.myStudy) smeshgui = salome.ImportComponentGUI("SMESH") smeshgui.Init(salome.myStudyId) import StdMeshers import NETGENPlugin # ---------------------------- GEOM -------------------------------------- # ---- define contigous arcs and segment to define a closed wire 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 ) p4 = geompy.MakeVertex( 170.0, 100.0, 0.0 ) seg1 = geompy.MakeVector( p3, p4 ) p5 = geompy.MakeVertex( 200.0, 70.0, 0.0 ) p6 = geompy.MakeVertex( 170.0, 40.0, 0.0 ) arc2 = geompy.MakeArc( p4, p5, p6 ) 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 ) wire1 = geompy.MakeWire( List1 ) Id_wire1 = geompy.addToStudy( wire1, "wire1" ) # ---- define a planar face with wire WantPlanarFace = 1 #True face1 = geompy.MakeFace( wire1, WantPlanarFace ) Id_face1 = geompy.addToStudy( face1, "face1" ) # ---- create a shape by extrusion pO = geompy.MakeVertex( 0.0, 0.0, 0.0 ) pz = geompy.MakeVertex( 0.0, 0.0, 100.0 ) vz = geompy.MakeVector( pO, pz ) prism1 = geompy.MakePrismVecH( face1, vz, 100.0 ) Id_prism1 = geompy.addToStudy( prism1, "prism1") # ---- create two cylinders pc1 = geompy.MakeVertex( 90.0, 50.0, -40.0 ) pc2 = geompy.MakeVertex( 170.0, 70.0, -40.0 ) radius = 20.0 height = 180.0 cyl1 = geompy.MakeCylinder( pc1, vz, radius, height ) cyl2 = geompy.MakeCylinder( pc2, vz, radius, height ) Id_Cyl1 = geompy.addToStudy( cyl1, "cyl1" ) Id_Cyl2 = geompy.addToStudy( cyl2, "cyl2" ) # ---- cut with cyl1 shape = geompy.MakeBoolean( prism1, cyl1, 2 ) # ---- fuse with cyl2 to obtain the final mechanic piece :) mechanic = geompy.MakeBoolean( shape, cyl2, 3 ) Id_mechanic = geompy.addToStudy( mechanic, "mechanic" ) # ---- Analysis of the geometry print "Analysis of the geometry mechanic :" 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 -------------------------------------- print "-------------------------- NumberOfSegments" numberOfSegment = 10 hypNbSeg = smesh.CreateHypothesis( "NumberOfSegments", "libStdMeshersEngine.so" ) hypNbSeg.SetNumberOfSegments( numberOfSegment ) print hypNbSeg.GetName() print hypNbSeg.GetId() print hypNbSeg.GetNumberOfSegments() smeshgui.SetName(salome.ObjectToID(hypNbSeg), "NumberOfSegments_10") print "-------------------------- MaxElementArea" maxElementArea = 20 hypArea = smesh.CreateHypothesis( "MaxElementArea", "libStdMeshersEngine.so" ) hypArea.SetMaxElementArea( maxElementArea ) print hypArea.GetName() print hypArea.GetId() print hypArea.GetMaxElementArea() smeshgui.SetName(salome.ObjectToID(hypArea), "MaxElementArea_20") print "-------------------------- MaxElementVolume" maxElementVolume = 20 hypVolume = smesh.CreateHypothesis( "MaxElementVolume", "libStdMeshersEngine.so" ) hypVolume.SetMaxElementVolume( maxElementVolume ) print hypVolume.GetName() print hypVolume.GetId() print hypVolume.GetMaxElementVolume() smeshgui.SetName(salome.ObjectToID(hypVolume), "MaxElementVolume_20") print "-------------------------- Regular_1D" algoReg1D = smesh.CreateHypothesis( "Regular_1D", "libStdMeshersEngine.so" ) listHyp =algoReg1D.GetCompatibleHypothesis() for hyp in listHyp: print hyp print algoReg1D.GetName() print algoReg1D.GetId() smeshgui.SetName(salome.ObjectToID(algoReg1D), "Regular_1D") print "-------------------------- MEFISTO_2D" algoMef = smesh.CreateHypothesis( "MEFISTO_2D", "libStdMeshersEngine.so" ) listHyp = algoMef.GetCompatibleHypothesis() for hyp in listHyp: print hyp print algoMef.GetName() print algoMef.GetId() smeshgui.SetName(salome.ObjectToID(algoMef), "MEFISTO_2D") print "-------------------------- NETGEN_3D" algoNg = smesh.CreateHypothesis( "NETGEN_3D", "libNETGENEngine.so" ) listHyp = algoNg.GetCompatibleHypothesis() for hyp in listHyp: print hyp print algoNg.GetName() print algoNg.GetId() smeshgui.SetName(salome.ObjectToID(algoNg), "NETGEN_3D") print "-------------------------- add hypothesis to main mechanic" shape_mesh = salome.IDToObject( Id_mechanic ) mesh = smesh.CreateMesh(shape_mesh) idmesh = salome.ObjectToID(mesh) smeshgui.SetName( idmesh, "Mesh_mechanic_tetra" ) mesh.AddHypothesis( shape_mesh, hypNbSeg ) # nb segments mesh.AddHypothesis( shape_mesh, hypArea ) # max area mesh.AddHypothesis( shape_mesh, hypVolume ) # max volume mesh.AddHypothesis( shape_mesh, algoReg1D ) # Regular 1D/wire discretisation mesh.AddHypothesis( shape_mesh, algoMef ) # MEFISTO 2D mesh.AddHypothesis( shape_mesh, algoNg ) # NETGEN 3D print "-------------------------- compute the mesh of the mechanic piece" smesh.Compute(mesh,shape_mesh) print "Information about the Mesh_mechanic_tetra:" 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() print "Number of tetrahedrons: ", mesh.NbTetras() salome.sg.updateObjBrowser(1)