1 # -*- coding: iso-8859-1 -*-
2 # Copyright (C) 2007-2024 CEA, EDF, 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 # Quadrangulation of the geometry generated by the Python script
26 # The new Netgen algorithm is used that discretizes baoundaries itself
31 from salome.geom import geomBuilder
32 geompy = geomBuilder.New()
34 import SMESH, SALOMEDS
35 from salome.smesh import smeshBuilder
36 smesh = smeshBuilder.New()
38 # ---------------------------- GEOM --------------------------------------
40 # ---- define contiguous arcs and segment to define a closed wire
41 p1 = geompy.MakeVertex( 100.0, 0.0, 0.0 )
42 p2 = geompy.MakeVertex( 50.0, 50.0, 0.0 )
43 p3 = geompy.MakeVertex( 100.0, 100.0, 0.0 )
44 arc1 = geompy.MakeArc( p1, p2, p3 )
46 p4 = geompy.MakeVertex( 170.0, 100.0, 0.0 )
47 seg1 = geompy.MakeVector( p3, p4 )
49 p5 = geompy.MakeVertex( 200.0, 70.0, 0.0 )
50 p6 = geompy.MakeVertex( 170.0, 40.0, 0.0 )
51 arc2 = geompy.MakeArc( p4, p5, p6 )
53 p7 = geompy.MakeVertex( 120.0, 30.0, 0.0 )
54 arc3 = geompy.MakeArc( p6, p7, p1 )
56 # ---- define a closed wire with arcs and segment
63 wire1 = geompy.MakeWire( List1 )
64 Id_wire1 = geompy.addToStudy( wire1, "wire1" )
66 # ---- define a planar face with wire
67 WantPlanarFace = 1 #True
68 face1 = geompy.MakeFace( wire1, WantPlanarFace )
69 Id_face1 = geompy.addToStudy( face1, "face1" )
71 # ---- create a shape by extrusion
72 pO = geompy.MakeVertex( 0.0, 0.0, 0.0 )
73 pz = geompy.MakeVertex( 0.0, 0.0, 100.0 )
74 vz = geompy.MakeVector( pO, pz )
76 prism1 = geompy.MakePrismVecH( face1, vz, 100.0 )
77 Id_prism1 = geompy.addToStudy( prism1, "prism1")
79 # ---- create two cylinders
81 pc1 = geompy.MakeVertex( 90.0, 50.0, -40.0 )
82 pc2 = geompy.MakeVertex( 170.0, 70.0, -40.0 )
85 cyl1 = geompy.MakeCylinder( pc1, vz, radius, height )
86 cyl2 = geompy.MakeCylinder( pc2, vz, radius, height )
88 Id_Cyl1 = geompy.addToStudy( cyl1, "cyl1" )
89 Id_Cyl2 = geompy.addToStudy( cyl2, "cyl2" )
92 shape = geompy.MakeBoolean( prism1, cyl1, 2 )
94 # ---- fuse with cyl2 to obtain the final mechanic piece :)
95 mechanic = geompy.MakeBoolean( shape, cyl2, 3 )
96 Id_mechanic = geompy.addToStudy( mechanic, "mechanic" )
98 # ---- Analysis of the geometry
100 print("Analysis of the geometry mechanic :")
102 subShellList = geompy.SubShapeAll(mechanic,geompy.ShapeType["SHELL"])
103 subFaceList = geompy.SubShapeAll(mechanic,geompy.ShapeType["FACE"])
104 subEdgeList = geompy.SubShapeAll(mechanic,geompy.ShapeType["EDGE"])
106 print("number of Shells in mechanic : ",len(subShellList))
107 print("number of Faces in mechanic : ",len(subFaceList))
108 print("number of Edges in mechanic : ",len(subEdgeList))
110 ### ---------------------------- SMESH --------------------------------------
112 print("-------------------------- create Mesh, algorithm, hypothesis")
114 mesh = smesh.Mesh(mechanic, "Mesh_mechanic");
115 netgen = mesh.Triangle(smeshBuilder.NETGEN)
116 netgen.SetMaxSize( 50 )
117 #netgen.SetSecondOrder( 0 )
118 netgen.SetFineness( smeshBuilder.Fine )
119 netgen.SetQuadAllowed( 1 )
120 #netgen.SetOptimize( 1 )
122 print("-------------------------- compute mesh")
126 raise Exception("Error when computing Mesh")
128 print("Information about the MeshcompShel:")
129 print("Number of nodes : ", mesh.NbNodes())
130 print("Number of edges : ", mesh.NbEdges())
131 print("Number of faces : ", mesh.NbFaces())
132 print("Number of triangles : ", mesh.NbTriangles())
133 print("Number of quadrangles : ", mesh.NbQuadrangles())
134 print("Number of volumes : ", mesh.NbVolumes())
135 print("Number of tetrahedrons : ", mesh.NbTetras())
137 salome.sg.updateObjBrowser()