# # Tetrahedrization of the geometry union of 2 boxes having a face in common # Hypothesis and algorithms for the mesh generation are global # import salome import geompy import StdMeshers import NETGENPlugin smesh = salome.lcc.FindOrLoadComponent("FactoryServer", "SMESH") smeshgui = salome.ImportComponentGUI("SMESH") smeshgui.Init(salome.myStudyId); # ---- define 2 boxes box1 and box2 box1 = geompy.MakeBox(0., 0., 0., 100., 200., 300.) idbox1 = geompy.addToStudy(box1, "box1") print "Analysis of the geometry box1 :" subShellList = geompy.SubShapeAll(box1, geompy.ShapeType["SHELL"]) subFaceList = geompy.SubShapeAll(box1, geompy.ShapeType["FACE"]) subEdgeList = geompy.SubShapeAll(box1, geompy.ShapeType["EDGE"]) print "number of Shells in box1 : ", len(subShellList) print "number of Faces in box1 : ", len(subFaceList) print "number of Edges in box1 : ", len(subEdgeList) box2 = geompy.MakeBox(100., 0., 0., 200., 200., 300.) idbox2 = geompy.addToStudy(box2, "box2") print "Analysis of the geometry box2 :" subShellList = geompy.SubShapeAll(box2, geompy.ShapeType["SHELL"]) subFaceList = geompy.SubShapeAll(box2, geompy.ShapeType["FACE"]) subEdgeList = geompy.SubShapeAll(box2, geompy.ShapeType["EDGE"]) print "number of Shells in box2 : ", len(subShellList) print "number of Faces in box2 : ", len(subFaceList) print "number of Edges in box2 : ", len(subEdgeList) # append the tow boxes to make ine shel, referrencing only once # the internal interface shell = geompy.MakePartition([box1, box2]) idshell = geompy.addToStudy(shell, "shell") print "Analysis of the geometry shell (union of box1 and box2) :" subShellList = geompy.SubShapeAll(shell, geompy.ShapeType["SHELL"]) subFaceList = geompy.SubShapeAll(shell, geompy.ShapeType["FACE"]) subEdgeList = geompy.SubShapeAll(shell, geompy.ShapeType["EDGE"]) print "number of Shells in shell : ", len(subShellList) print "number of Faces in shell : ", len(subFaceList) print "number of Edges in shell : ", len(subEdgeList) ### ---------------------------- SMESH -------------------------------------- # ---- create Hypothesis print "-------------------------- create Hypothesis" print "-------------------------- NumberOfSegments" numberOfSegments = 10 hypNbSeg = smesh.CreateHypothesis("NumberOfSegments", "libStdMeshersEngine.so") hypNbSeg.SetNumberOfSegments(numberOfSegments) print hypNbSeg.GetName() print hypNbSeg.GetId() print hypNbSeg.GetNumberOfSegments() smeshgui.SetName(salome.ObjectToID(hypNbSeg), "NumberOfSegments_10") print "-------------------------- MaxElementArea" maxElementArea = 500 hypArea = smesh.CreateHypothesis("MaxElementArea", "libStdMeshersEngine.so") hypArea.SetMaxElementArea(maxElementArea) print hypArea.GetName() print hypArea.GetId() print hypArea.GetMaxElementArea() smeshgui.SetName(salome.ObjectToID(hypArea), "MaxElementArea_500") print "-------------------------- MaxElementVolume" maxElementVolume = 500 hypVolume = smesh.CreateHypothesis("MaxElementVolume", "libStdMeshersEngine.so") hypVolume.SetMaxElementVolume(maxElementVolume) print hypVolume.GetName() print hypVolume.GetId() print hypVolume.GetMaxElementVolume() smeshgui.SetName(salome.ObjectToID(hypVolume), "MaxElementVolume_500") # ---- create Algorithms print "-------------------------- create Algorithms" print "-------------------------- Regular_1D" regular1D = smesh.CreateHypothesis("Regular_1D", "libStdMeshersEngine.so") smeshgui.SetName(salome.ObjectToID(regular1D), "Wire Discretisation") print "-------------------------- MEFISTO_2D" mefisto2D = smesh.CreateHypothesis("MEFISTO_2D", "libStdMeshersEngine.so") smeshgui.SetName(salome.ObjectToID(mefisto2D), "MEFISTO_2D") print "-------------------------- NETGEN_3D" netgen3D = smesh.CreateHypothesis("NETGEN_3D", "libNETGENEngine.so") smeshgui.SetName(salome.ObjectToID(netgen3D), "NETGEN_3D") # ---- init a Mesh with the shell mesh = smesh.CreateMesh(shell) smeshgui.SetName(salome.ObjectToID(mesh), "MeshBox2") # ---- add hypothesis to shell print "-------------------------- add hypothesis to shell" mesh.AddHypothesis(shell,regular1D) mesh.AddHypothesis(shell,hypNbSeg) mesh.AddHypothesis(shell,mefisto2D) mesh.AddHypothesis(shell,hypArea) mesh.AddHypothesis(shell,netgen3D) mesh.AddHypothesis(shell,hypVolume) salome.sg.updateObjBrowser(1) print "-------------------------- compute shell" ret = smesh.Compute(mesh,shell) print ret if ret != 0: log = mesh.GetLog(0) # no erase trace for linelog in log: print linelog print "Information about the MeshBox2:" 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 volumes : ", mesh.NbVolumes() print "Number of tetrahedrons: ", mesh.NbTetras() else: print "probleme when computing the mesh"