1 # -*- coding: iso-8859-1 -*-
2 # Copyright (C) 2007-2008 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.
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
23 # Quadrangulation of the geometry generated by the Python script
25 # The new Netgen algorithm is used that discretizes baoundaries itself
34 # ---------------------------- GEOM --------------------------------------
36 # ---- define contigous arcs and segment to define a closed wire
37 p1 = geompy.MakeVertex( 100.0, 0.0, 0.0 )
38 p2 = geompy.MakeVertex( 50.0, 50.0, 0.0 )
39 p3 = geompy.MakeVertex( 100.0, 100.0, 0.0 )
40 arc1 = geompy.MakeArc( p1, p2, p3 )
42 p4 = geompy.MakeVertex( 170.0, 100.0, 0.0 )
43 seg1 = geompy.MakeVector( p3, p4 )
45 p5 = geompy.MakeVertex( 200.0, 70.0, 0.0 )
46 p6 = geompy.MakeVertex( 170.0, 40.0, 0.0 )
47 arc2 = geompy.MakeArc( p4, p5, p6 )
49 p7 = geompy.MakeVertex( 120.0, 30.0, 0.0 )
50 arc3 = geompy.MakeArc( p6, p7, p1 )
52 # ---- define a closed wire with arcs and segment
59 wire1 = geompy.MakeWire( List1 )
60 Id_wire1 = geompy.addToStudy( wire1, "wire1" )
62 # ---- define a planar face with wire
63 WantPlanarFace = 1 #True
64 face1 = geompy.MakeFace( wire1, WantPlanarFace )
65 Id_face1 = geompy.addToStudy( face1, "face1" )
67 # ---- create a shape by extrusion
68 pO = geompy.MakeVertex( 0.0, 0.0, 0.0 )
69 pz = geompy.MakeVertex( 0.0, 0.0, 100.0 )
70 vz = geompy.MakeVector( pO, pz )
72 prism1 = geompy.MakePrismVecH( face1, vz, 100.0 )
73 Id_prism1 = geompy.addToStudy( prism1, "prism1")
75 # ---- create two cylinders
77 pc1 = geompy.MakeVertex( 90.0, 50.0, -40.0 )
78 pc2 = geompy.MakeVertex( 170.0, 70.0, -40.0 )
81 cyl1 = geompy.MakeCylinder( pc1, vz, radius, height )
82 cyl2 = geompy.MakeCylinder( pc2, vz, radius, height )
84 Id_Cyl1 = geompy.addToStudy( cyl1, "cyl1" )
85 Id_Cyl2 = geompy.addToStudy( cyl2, "cyl2" )
88 shape = geompy.MakeBoolean( prism1, cyl1, 2 )
90 # ---- fuse with cyl2 to obtain the final mechanic piece :)
91 mechanic = geompy.MakeBoolean( shape, cyl2, 3 )
92 Id_mechanic = geompy.addToStudy( mechanic, "mechanic" )
94 # ---- Analysis of the geometry
96 print "Analysis of the geometry mechanic :"
98 subShellList = geompy.SubShapeAll(mechanic,geompy.ShapeType["SHELL"])
99 subFaceList = geompy.SubShapeAll(mechanic,geompy.ShapeType["FACE"])
100 subEdgeList = geompy.SubShapeAll(mechanic,geompy.ShapeType["EDGE"])
102 print "number of Shells in mechanic : ",len(subShellList)
103 print "number of Faces in mechanic : ",len(subFaceList)
104 print "number of Edges in mechanic : ",len(subEdgeList)
106 ### ---------------------------- SMESH --------------------------------------
108 print "-------------------------- create Mesh, algorithm, hypothesis"
110 mesh = smesh.Mesh(mechanic, "Mesh_mechanic");
111 netgen = mesh.Triangle(smesh.NETGEN)
112 netgen.SetMaxSize( 50 )
113 #netgen.SetSecondOrder( 0 )
114 netgen.SetFineness( smesh.Fine )
115 netgen.SetQuadAllowed( 1 )
116 #netgen.SetOptimize( 1 )
118 salome.sg.updateObjBrowser(1)
120 print "-------------------------- compute mesh"
124 print "Information about the MeshcompShel:"
125 print "Number of nodes : ", mesh.NbNodes()
126 print "Number of edges : ", mesh.NbEdges()
127 print "Number of faces : ", mesh.NbFaces()
128 print "Number of triangles : ", mesh.NbTriangles()
129 print "Number of quadrangles : ", mesh.NbQuadrangles()
130 print "Number of volumes : ", mesh.NbVolumes()
131 print "Number of tetrahedrons : ", mesh.NbTetras()
134 print "problem when computing the mesh"