# Copyright (C) 2005 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.salome-platform.org/ or email : webmaster.salome@opencascade.com # # # Triangulation of the skin of the geometry from a Brep representing a plane # This geometry is from EADS # Hypothesis and algorithms for the mesh generation are global # import os import salome import geompy import StdMeshers smesh = salome.lcc.FindOrLoadComponent("FactoryServer", "SMESH") smeshgui = salome.ImportComponentGUI("SMESH") smeshgui.Init(salome.myStudyId) # ---------------------------- GEOM -------------------------------------- # import a BRep #before running this script, please be sure about #the path the file fileName filePath = os.environ["DATA_DIR"] filePath = filePath + "/Shapes/Brep/" filename = "flight_solid.brep" filename = filePath + filename shape = geompy.Import(filename, "BREP") idShape = geompy.addToStudy(shape, "flight") print "Analysis of the geometry flight :" subShellList = geompy.SubShapeAll(shape, geompy.ShapeType["SHELL"]) subFaceList = geompy.SubShapeAll(shape, geompy.ShapeType["FACE"]) subEdgeList = geompy.SubShapeAll(shape, geompy.ShapeType["EDGE"]) print "number of Shells in flight : ", len(subShellList) print "number of Faces in flight : ", len(subFaceList) print "number of Edges in flight : ", len(subEdgeList) ### ---------------------------- SMESH -------------------------------------- print "-------------------------- create Hypothesis" print "-------------------------- LocalLength" lengthOfSegments = 0.3 hypLength = smesh.CreateHypothesis("LocalLength", "libStdMeshersEngine.so") hypLength.SetLength(lengthOfSegments) print hypLength.GetName() print hypLength.GetId() print hypLength.GetLength() smeshgui.SetName(salome.ObjectToID(hypLength), "LocalLength_0.3") print "-------------------------- LengthFromEdges" hypLengthFromEdge = smesh.CreateHypothesis("LengthFromEdges", "libStdMeshersEngine.so") print hypLengthFromEdge.GetName() print hypLengthFromEdge.GetId() smeshgui.SetName(salome.ObjectToID(hypLengthFromEdge), "LengthFromEdge") 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") # ---- init a Mesh with the shell shape_mesh = salome.IDToObject( idShape ) mesh = smesh.CreateMesh(shape_mesh) smeshgui.SetName(salome.ObjectToID(mesh), "MeshFlight") # ---- add hypothesis to flight print "-------------------------- add hypothesis to flight" mesh.AddHypothesis(shape_mesh,regular1D) mesh.AddHypothesis(shape_mesh,hypLength) mesh.AddHypothesis(shape_mesh,mefisto2D) mesh.AddHypothesis(shape_mesh,hypLengthFromEdge) salome.sg.updateObjBrowser(1) print "-------------------------- compute the skin flight" ret = smesh.Compute(mesh,shape_mesh) print ret if ret != 0: log = mesh.GetLog(0) # no erase trace for linelog in log: print linelog 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 volumes : ", mesh.NbVolumes() else: print "probleme when computing the mesh"