# 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 import StdMeshers import SMESH # ---------------------------- 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" ) # ---- explode on faces SubFaceL = geompy.SubShapeAllSorted(mechanic, geompy.ShapeType["FACE"]) # ---- add a face sub shape in study to be meshed different sub_face1 = SubFaceL[0] name = geompy.SubShapeName( sub_face1, mechanic ) Id_SubFace1 = geompy.addToStudyInFather( mechanic, sub_face1, name ) # ---- add a face sub shape in study to be meshed different sub_face2 = SubFaceL[4] name = geompy.SubShapeName( sub_face2, mechanic ) Id_SubFace2 = geompy.addToStudyInFather( mechanic, sub_face2, name ) # ---- add a face sub shape in study to be meshed different sub_face3 = SubFaceL[5] name = geompy.SubShapeName( sub_face3, mechanic ) Id_SubFace3 = geompy.addToStudyInFather( mechanic, sub_face3, name ) # ---- add a face sub shape in study to be meshed different sub_face4 = SubFaceL[10] name = geompy.SubShapeName( sub_face4, mechanic ) Id_SubFace4 = geompy.addToStudyInFather( mechanic, sub_face4, name ) # ---------------------------- SMESH -------------------------------------- # ---- launch SMESH, init a Mesh with shape 'mechanic' smesh = salome.lcc.FindOrLoadComponent("FactoryServer", "SMESH") # -- Init -- shape_mesh = salome.IDToObject( Id_mechanic ) smesh.SetCurrentStudy(salome.myStudy) mesh = smesh.CreateMesh(shape_mesh) smeshgui = salome.ImportComponentGUI("SMESH") smeshgui.Init(salome.myStudyId) idmesh = salome.ObjectToID(mesh) smeshgui.SetName( idmesh, "Mesh_mechanic" ) 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 = 25 hypArea25 = smesh.CreateHypothesis( "MaxElementArea", "libStdMeshersEngine.so" ) hypArea25.SetMaxElementArea( maxElementArea ) print hypArea25.GetName() print hypArea25.GetId() print hypArea25.GetMaxElementArea() smeshgui.SetName(salome.ObjectToID(hypArea25), "MaxElementArea_25") print "-------------------------- MaxElementArea" maxElementArea = 35 hypArea35 = smesh.CreateHypothesis( "MaxElementArea", "libStdMeshersEngine.so" ) hypArea35.SetMaxElementArea( maxElementArea ) print hypArea35.GetName() print hypArea35.GetId() print hypArea35.GetMaxElementArea() smeshgui.SetName(salome.ObjectToID(hypArea35), "MaxElementArea_35") 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 "-------------------------- SMESH_Quadrangle_2D" algoQuad = smesh.CreateHypothesis( "Quadrangle_2D", "libStdMeshersEngine.so" ) listHyp = algoQuad.GetCompatibleHypothesis() for hyp in listHyp: print hyp print algoQuad.GetName() print algoQuad.GetId() smeshgui.SetName(salome.ObjectToID(algoQuad), "SMESH_Quadrangle_2D") print "-------------------------- add hypothesis to main shape" mesh.AddHypothesis( shape_mesh, hypNbSeg ) # nb segments mesh.AddHypothesis( shape_mesh, hypArea25 ) # max area mesh.AddHypothesis( shape_mesh, algoReg1D ) # Regular 1D/wire discretisation mesh.AddHypothesis( shape_mesh, algoMef ) # MEFISTO 2D print "-------------------------- add hypothesis and algorithm to sub face 1" submesh = mesh.GetSubMesh(sub_face1, "SubMeshFace1") mesh.AddHypothesis( sub_face1, algoQuad ) # Quadrangle 2D mesh.AddHypothesis( sub_face1, hypArea35 ) # max area print "-------------------------- add hypothesis and algorithm to sub face 2" submesh = mesh.GetSubMesh(sub_face2, "SubMeshFace2") mesh.AddHypothesis( sub_face2, algoQuad ) # Quadrangle 2D mesh.AddHypothesis( sub_face2, hypArea35 ) # max area print "-------------------------- add hypothesis and algorith to sub face 3" submesh = mesh.GetSubMesh(sub_face3, "SubMeshFace3") mesh.AddHypothesis( sub_face3, algoQuad ) # Quadrangle 2D mesh.AddHypothesis( sub_face3, hypArea35 ) # max area print "-------------------------- add hypothesis and algorith to sub face 4" submesh = mesh.GetSubMesh(sub_face4, "SubMeshFace4") mesh.AddHypothesis( sub_face4, algoQuad ) # Quadrangle 2D mesh.AddHypothesis( sub_face4, hypArea35 ) # max area print "-------------------------- compute the mesh of the mechanic piece" smesh.Compute(mesh, shape_mesh) 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 quadrangles : ", mesh.NbQuadrangles() print "Number of volumes : ", mesh.NbVolumes() print "Number of tetrahedrons: ", mesh.NbTetras() MeshEditor = mesh.GetMeshEditor() #1 cutting of quadrangles of the 'SubMeshFace2' submesh submesh = mesh.GetSubMesh(sub_face2, "SubMeshFace2") MeshEditor.SplitQuadObject(submesh, 1) #2 cutting of triangles of the group FacesTriToQuad = [2381, 2382, 2383, 2384, 2385, 2386, 2387, 2388, 2389, 2390, 2391, 2392, 2393, 2394, 2395, 2396, 2397, 2398, 2399, 2400, 2401, 2402, 2403, 2404, 2405, 2406, 2407, 2408, 2409, 2410, 2411, 2412, 2413, 2414, 2415, 2416, 2417, 2418, 2419, 2420, 2421, 2422] GroupTriToQuad = mesh.CreateGroup(SMESH.FACE,"Group of faces (quad)") GroupTriToQuad.Add(FacesTriToQuad) MeshEditor.TriToQuadObject(GroupTriToQuad, None , 1.57) #3 extrusion of the group point = SMESH.PointStruct(0, 0, 5) vector = SMESH.DirStruct(point) MeshEditor.ExtrusionSweepObject(GroupTriToQuad, vector, 5) #4 mirror object MeshEditor.MirrorObject(mesh, SMESH.AxisStruct(0, 0, 0, 0, 0, 0), SMESH.SMESH_MeshEditor.POINT, 0) #5 mesh translation point = SMESH.PointStruct(10, 10, 10) vector = SMESH.DirStruct(point) MeshEditor.TranslateObject(mesh, vector, 0) #6 mesh rotation axisXYZ = SMESH.AxisStruct(0, 0, 0, 10, 10, 10) angle180 = 180*3.141/180 MeshEditor.RotateObject(mesh, axisXYZ, angle180, 0) #7 group smoothing FacesSmooth = [864, 933, 941, 950, 1005, 1013] GroupSmooth = mesh.CreateGroup(SMESH.FACE,"Group of faces (smooth)") GroupSmooth.Add(FacesSmooth) MeshEditor.SmoothObject(GroupSmooth, [], 20, 2, SMESH.SMESH_MeshEditor.CENTROIDAL_SMOOTH) #8 rotation sweep object FacesRotate = [492, 493, 502, 503] GroupRotate = mesh.CreateGroup(SMESH.FACE,"Group of faces (rotate)") GroupRotate.Add(FacesRotate) angle45 = 45*3.141/180 axisXYZ = SMESH.AxisStruct(-38.3128, -73.3658, -133.321, -13.3402, -13.3265, 6.66632) MeshEditor.RotationSweepObject(GroupRotate, axisXYZ, angle45, 4, 1e-5) #9 reorientation of the whole mesh submesh = mesh.GetSubMesh(sub_face1, "SubMeshFace1") MeshEditor.ReorientObject(submesh) salome.sg.updateObjBrowser(1)