1 # -*- coding: iso-8859-1 -*-
2 # Copyright (C) 2007-2020 CEA/DEN, EDF R&D, OPEN CASCADE
4 # Copyright (C) 2003-2007 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
5 # CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
7 # This library is free software; you can redistribute it and/or
8 # modify it under the terms of the GNU Lesser General Public
9 # License as published by the Free Software Foundation; either
10 # version 2.1 of the License, or (at your option) any later version.
12 # This library is distributed in the hope that it will be useful,
13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 # Lesser General Public License for more details.
17 # You should have received a copy of the GNU Lesser General Public
18 # License along with this library; if not, write to the Free Software
19 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 # See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
24 # File : SMESH_withHole.py
25 # Author : Lucien PIGNOLONI
32 from salome.geom import geomBuilder
33 geompy = geomBuilder.New()
35 import SMESH, SALOMEDS
36 from salome.smesh import smeshBuilder
37 smesh = smeshBuilder.New()
39 # ---------------------------- GEOM --------------------------------------
41 # ---- define contiguous arcs and segment to define a closed wire
42 p1 = geompy.MakeVertex( 100.0, 0.0, 0.0 )
43 p2 = geompy.MakeVertex( 50.0, 50.0, 0.0 )
44 p3 = geompy.MakeVertex( 100.0, 100.0, 0.0 )
45 arc1 = geompy.MakeArc( p1, p2, p3 )
47 p4 = geompy.MakeVertex( 170.0, 100.0, 0.0 )
48 seg1 = geompy.MakeVector( p3, p4 )
50 p5 = geompy.MakeVertex( 200.0, 70.0, 0.0 )
51 p6 = geompy.MakeVertex( 170.0, 40.0, 0.0 )
52 arc2 = geompy.MakeArc( p4, p5, p6 )
54 p7 = geompy.MakeVertex( 120.0, 30.0, 0.0 )
55 arc3 = geompy.MakeArc( p6, p7, p1 )
57 # ---- define a closed wire with arcs and segment
64 wire1 = geompy.MakeWire( List1 )
65 Id_wire1 = geompy.addToStudy( wire1, "wire1" )
67 # ---- define a planar face with wire
68 WantPlanarFace = 1 #True
69 face1 = geompy.MakeFace( wire1, WantPlanarFace )
70 Id_face1 = geompy.addToStudy( face1, "face1" )
72 # ---- create a shape by extrusion
73 pO = geompy.MakeVertex( 0.0, 0.0, 0.0 )
74 pz = geompy.MakeVertex( 0.0, 0.0, 100.0 )
75 vz = geompy.MakeVector( pO, pz )
77 prism1 = geompy.MakePrismVecH( face1, vz, 100.0 )
78 Id_prism1 = geompy.addToStudy( prism1, "prism1")
80 # ---- create two cylinders
82 pc1 = geompy.MakeVertex( 90.0, 50.0, -40.0 )
83 pc2 = geompy.MakeVertex( 170.0, 70.0, -40.0 )
86 cyl1 = geompy.MakeCylinder( pc1, vz, radius, height )
87 cyl2 = geompy.MakeCylinder( pc2, vz, radius, height )
89 Id_Cyl1 = geompy.addToStudy( cyl1, "cyl1" )
90 Id_Cyl2 = geompy.addToStudy( cyl2, "cyl2" )
93 shape = geompy.MakeBoolean( prism1, cyl1, 2 )
95 # ---- fuse with cyl2 to obtain the final mechanic piece :)
96 mechanic = geompy.MakeBoolean( shape, cyl2, 3 )
97 Id_mechanic = geompy.addToStudy( mechanic, "mechanic" )
99 # ---- Analysis of the geometry
101 print("Analysis of the geometry mechanic :")
103 subShellList = geompy.SubShapeAll(mechanic,geompy.ShapeType["SHELL"])
104 subFaceList = geompy.SubShapeAll(mechanic,geompy.ShapeType["FACE"])
105 subEdgeList = geompy.SubShapeAll(mechanic,geompy.ShapeType["EDGE"])
107 print("number of Shells in mechanic : ",len(subShellList))
108 print("number of Faces in mechanic : ",len(subFaceList))
109 print("number of Edges in mechanic : ",len(subEdgeList))
111 ### ---------------------------- SMESH --------------------------------------
113 shape_mesh = salome.IDToObject( Id_mechanic )
115 mesh = smesh.Mesh(shape_mesh, "Mesh_mechanic_tetra")
117 print("-------------------------- add hypothesis to main mechanic")
121 algo1 = mesh.Segment()
122 hypNbSeg = algo1.NumberOfSegments(numberOfSegment)
123 print(hypNbSeg.GetName())
124 print(hypNbSeg.GetId())
125 print(hypNbSeg.GetNumberOfSegments())
126 smesh.SetName(hypNbSeg, "NumberOfSegments_" + str(numberOfSegment))
131 algo2 = mesh.Triangle(smeshBuilder.MEFISTO)
132 hypArea = algo2.MaxElementArea(maxElementArea)
133 print(hypArea.GetName())
134 print(hypArea.GetId())
135 print(hypArea.GetMaxElementArea())
136 smesh.SetName(hypArea, "MaxElementArea_" + str(maxElementArea))
139 maxElementVolume = 20
141 algo3 = mesh.Tetrahedron(smeshBuilder.NETGEN)
142 hypVolume = algo3.MaxElementVolume(maxElementVolume)
143 print(hypVolume.GetName())
144 print(hypVolume.GetId())
145 print(hypVolume.GetMaxElementVolume())
146 smesh.SetName(hypVolume, "maxElementVolume_" + str(maxElementVolume))
149 print("-------------------------- compute the mesh of the mechanic piece")
152 print("Information about the Mesh_mechanic_tetra:")
153 print("Number of nodes : ", mesh.NbNodes())
154 print("Number of edges : ", mesh.NbEdges())
155 print("Number of faces : ", mesh.NbFaces())
156 print("Number of triangles : ", mesh.NbTriangles())
157 print("Number of quadrangles: ", mesh.NbQuadrangles())
158 print("Number of volumes : ", mesh.NbVolumes())
159 print("Number of tetrahedrons: ", mesh.NbTetras())
161 salome.sg.updateObjBrowser()