src/SMESH_SWIG/SMESH_box2_tetra.py

   1 #
   2 # Tetrahedrization of the geometry union of 2 boxes having a face in common
   3 # Hypothesis and algorithms for the mesh generation are global
   4 #
   5
   6 import salome
   7 import geompy
   8
   9 import StdMeshers
  10 import NETGENPlugin
  11
  12 geom  = salome.lcc.FindOrLoadComponent("FactoryServer", "GEOM")
  13 smesh = salome.lcc.FindOrLoadComponent("FactoryServer", "SMESH")
  14
  15 smeshgui = salome.ImportComponentGUI("SMESH")
  16 smeshgui.Init(salome.myStudyId);
  17
  18 ShapeTypeShell     = 3
  19 ShapeTypeFace      = 4
  20 ShapeTypeEdge      = 6
  21
  22 # ---- define 2 boxes box1 and box2
  23
  24 box1 = geompy.MakeBox(0., 0., 0., 100., 200., 300.)
  25
  26 idbox1 = geompy.addToStudy(box1,"box1")
  27
  28 print "Analysis of the geometry box1 :"
  29 subShellList=geompy.SubShapeAll(box1,ShapeTypeShell)
  30 subFaceList=geompy.SubShapeAll(box1,ShapeTypeFace)
  31 subEdgeList=geompy.SubShapeAll(box1,ShapeTypeEdge)
  32
  33 print "number of Shells in box1 : ",len(subShellList)
  34 print "number of Faces in box1 : ",len(subFaceList)
  35 print "number of Edges in box1 : ",len(subEdgeList)
  36
  37 box2 = geompy.MakeBox(100., 0., 0., 200., 200., 300.)
  38
  39 idbox2 = geompy.addToStudy(box2,"box2")
  40
  41 print "Analysis of the geometry box2 :"
  42 subShellList=geompy.SubShapeAll(box2,ShapeTypeShell)
  43 subFaceList=geompy.SubShapeAll(box2,ShapeTypeFace)
  44 subEdgeList=geompy.SubShapeAll(box2,ShapeTypeEdge)
  45
  46 print "number of Shells in box2 : ",len(subShellList)
  47 print "number of Faces in box2 : ",len(subFaceList)
  48 print "number of Edges in box2 : ",len(subEdgeList)
  49
  50 blocs = []
  51 blocs.append(box1._get_Name())
  52 blocs.append(box2._get_Name())
  53
  54 # append the tow boxes to make ine shel, referrencing only once
  55 # the internal interface
  56
  57 shell = geompy.Partition(blocs)
  58 idshell = geompy.addToStudy(shell,"shell")
  59
  60 print "Analysis of the geometry shell (union of box1 and box2) :"
  61 subShellList=geompy.SubShapeAll(shell,ShapeTypeShell)
  62 subFaceList=geompy.SubShapeAll(shell,ShapeTypeFace)
  63 subEdgeList=geompy.SubShapeAll(shell,ShapeTypeEdge)
  64
  65 print "number of Shells in shell : ",len(subShellList)
  66 print "number of Faces in shell : ",len(subFaceList)
  67 print "number of Edges in shell : ",len(subEdgeList)
  68
  69
  70 ### ---------------------------- SMESH --------------------------------------
  71
  72 # ---- create Hypothesis
  73
  74 print "-------------------------- create Hypothesis"
  75
  76 print "-------------------------- NumberOfSegments"
  77
  78 numberOfSegments = 10
  79
  80 hypNbSeg=smesh.CreateHypothesis("NumberOfSegments", "libStdMeshersEngine.so")
  81 hypNbSeg.SetNumberOfSegments(numberOfSegments)
  82
  83 print hypNbSeg.GetName()
  84 print hypNbSeg.GetId()
  85 print hypNbSeg.GetNumberOfSegments()
  86
  87 smeshgui.SetName(salome.ObjectToID(hypNbSeg), "NumberOfSegments_10")
  88
  89 print "-------------------------- MaxElementArea"
  90
  91 maxElementArea = 500
  92
  93 hypArea=smesh.CreateHypothesis("MaxElementArea", "libStdMeshersEngine.so")
  94 hypArea.SetMaxElementArea(maxElementArea)
  95
  96 print hypArea.GetName()
  97 print hypArea.GetId()
  98 print hypArea.GetMaxElementArea()
  99
 100 smeshgui.SetName(salome.ObjectToID(hypArea), "MaxElementArea_500")
 101
 102 print "-------------------------- MaxElementVolume"
 103
 104 maxElementVolume = 500
 105
 106 hypVolume=smesh.CreateHypothesis("MaxElementVolume", "libStdMeshersEngine.so")
 107 hypVolume.SetMaxElementVolume(maxElementVolume)
 108
 109 print hypVolume.GetName()
 110 print hypVolume.GetId()
 111 print hypVolume.GetMaxElementVolume()
 112
 113 smeshgui.SetName(salome.ObjectToID(hypVolume), "MaxElementVolume_500")
 114
 115 # ---- create Algorithms
 116
 117 print "-------------------------- create Algorithms"
 118
 119 print "-------------------------- Regular_1D"
 120
 121 regular1D=smesh.CreateHypothesis("Regular_1D", "libStdMeshersEngine.so")
 122 smeshgui.SetName(salome.ObjectToID(regular1D), "Wire Discretisation")
 123
 124 print "-------------------------- MEFISTO_2D"
 125
 126 mefisto2D=smesh.CreateHypothesis("MEFISTO_2D", "libStdMeshersEngine.so")
 127 smeshgui.SetName(salome.ObjectToID(mefisto2D), "MEFISTO_2D")
 128
 129 print "-------------------------- NETGEN_3D"
 130
 131 netgen3D=smesh.CreateHypothesis("NETGEN_3D", "libNETGENEngine.so")
 132 smeshgui.SetName(salome.ObjectToID(netgen3D), "NETGEN_3D")
 133
 134 # ---- init a Mesh with the shell
 135
 136 mesh = smesh.CreateMesh(shell)
 137 smeshgui.SetName(salome.ObjectToID(mesh), "MeshBox2")
 138
 139 # ---- add hypothesis to shell
 140
 141 print "-------------------------- add hypothesis to shell"
 142
 143 mesh.AddHypothesis(shell,regular1D)
 144 mesh.AddHypothesis(shell,hypNbSeg)
 145
 146 mesh.AddHypothesis(shell,mefisto2D)
 147 mesh.AddHypothesis(shell,hypArea)
 148
 149 mesh.AddHypothesis(shell,netgen3D)
 150 mesh.AddHypothesis(shell,hypVolume)
 151
 152 salome.sg.updateObjBrowser(1)
 153
 154 print "-------------------------- compute shell"
 155 ret= smesh.Compute(mesh,shell)
 156 print ret
 157 if ret != 0:
 158     log=mesh.GetLog(0) # no erase trace
 159     for linelog in log:
 160         print linelog
 161     print "Information about the MeshBox2:"
 162     print "Number of nodes       : ", mesh.NbNodes()
 163     print "Number of edges       : ", mesh.NbEdges()
 164     print "Number of faces       : ", mesh.NbFaces()
 165     print "Number of triangles   : ", mesh.NbTriangles()
 166     print "Number of volumes     : ", mesh.NbVolumes()
 167     print "Number of tetrahedrons: ", mesh.NbTetras()
 168 else:
 169     print "probleme when computing the mesh"