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 # Tetrahedrization of the geometry union of 3 boxes aligned where the middle
25 # one has a race in common with the two others.
26 # Hypothesis and algorithms for the mesh generation are global
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 # ---- define 3 boxes box1, box2 and box3
40 box1 = geompy.MakeBox(0., 0., 0., 100., 200., 300.)
42 idbox1 = geompy.addToStudy(box1, "box1")
44 print("Analysis of the geometry box1 :")
45 subShellList = geompy.SubShapeAll(box1, geompy.ShapeType["SHELL"])
46 subFaceList = geompy.SubShapeAll(box1, geompy.ShapeType["FACE"])
47 subEdgeList = geompy.SubShapeAll(box1, geompy.ShapeType["EDGE"])
49 print("number of Shells in box1 : ", len(subShellList))
50 print("number of Faces in box1 : ", len(subFaceList))
51 print("number of Edges in box1 : ", len(subEdgeList))
53 box2 = geompy.MakeBox(100., 0., 0., 200., 200., 300.)
55 idbox2 = geompy.addToStudy(box2, "box2")
57 print("Analysis of the geometry box2 :")
58 subShellList = geompy.SubShapeAll(box2, geompy.ShapeType["SHELL"])
59 subFaceList = geompy.SubShapeAll(box2, geompy.ShapeType["FACE"])
60 subEdgeList = geompy.SubShapeAll(box2, geompy.ShapeType["EDGE"])
62 print("number of Shells in box2 : ", len(subShellList))
63 print("number of Faces in box2 : ", len(subFaceList))
64 print("number of Edges in box2 : ", len(subEdgeList))
66 box3 = geompy.MakeBox(0., 0., 300., 200., 200., 500.)
68 idbox3 = geompy.addToStudy(box3, "box3")
70 print("Analysis of the geometry box3 :")
71 subShellList = geompy.SubShapeAll(box3, geompy.ShapeType["SHELL"])
72 subFaceList = geompy.SubShapeAll(box3, geompy.ShapeType["FACE"])
73 subEdgeList = geompy.SubShapeAll(box3, geompy.ShapeType["EDGE"])
75 print("number of Shells in box3 : ", len(subShellList))
76 print("number of Faces in box3 : ", len(subFaceList))
77 print("number of Edges in box3 : ", len(subEdgeList))
79 shell = geompy.MakePartition([box1, box2, box3])
80 idshell = geompy.addToStudy(shell,"shell")
82 print("Analysis of the geometry shell (union of box1, box2 and box3) :")
83 subShellList = geompy.SubShapeAll(shell, geompy.ShapeType["SHELL"])
84 subFaceList = geompy.SubShapeAll(shell, geompy.ShapeType["FACE"])
85 subEdgeList = geompy.SubShapeAll(shell, geompy.ShapeType["EDGE"])
87 print("number of Shells in shell : ", len(subShellList))
88 print("number of Faces in shell : ", len(subFaceList))
89 print("number of Edges in shell : ", len(subEdgeList))
92 ### ---------------------------- SMESH --------------------------------------
94 # ---- init a Mesh with the shell
96 mesh = smesh.Mesh(shell, "MeshBox3")
99 # ---- set Hypothesis and Algorithm
101 print("-------------------------- NumberOfSegments")
103 numberOfSegments = 10
105 regular1D = mesh.Segment()
106 hypNbSeg = regular1D.NumberOfSegments(numberOfSegments)
107 print(hypNbSeg.GetName())
108 print(hypNbSeg.GetId())
109 print(hypNbSeg.GetNumberOfSegments())
110 smesh.SetName(hypNbSeg, "NumberOfSegments_" + str(numberOfSegments))
112 print("-------------------------- MaxElementArea")
116 mefisto2D = mesh.Triangle()
117 hypArea = mefisto2D.MaxElementArea(maxElementArea)
118 print(hypArea.GetName())
119 print(hypArea.GetId())
120 print(hypArea.GetMaxElementArea())
121 smesh.SetName(hypArea, "MaxElementArea_" + str(maxElementArea))
123 print("-------------------------- MaxElementVolume")
125 maxElementVolume = 500
127 netgen3D = mesh.Tetrahedron(smeshBuilder.NETGEN)
128 hypVolume = netgen3D.MaxElementVolume(maxElementVolume)
129 print(hypVolume.GetName())
130 print(hypVolume.GetId())
131 print(hypVolume.GetMaxElementVolume())
132 smesh.SetName(hypVolume, "MaxElementVolume_" + str(maxElementVolume))
134 print("-------------------------- compute shell")
138 log = mesh.GetLog(0) # no erase trace
139 # for linelog in log:
141 print("Information about the MeshBox3:")
142 print("Number of nodes : ", mesh.NbNodes())
143 print("Number of edges : ", mesh.NbEdges())
144 print("Number of faces : ", mesh.NbFaces())
145 print("Number of triangles : ", mesh.NbTriangles())
146 print("Number of volumes : ", mesh.NbVolumes())
147 print("Number of tetrahedrons: ", mesh.NbTetras())
149 print("probleme when computing the mesh")
151 salome.sg.updateObjBrowser()