smesh/src/SMESH_SWIG/SMESH_Partition1_tetra.py

#
# Tetrahedrization of the geometry generated by the Python script GEOM_Partition1.py
# Hypothesis and algorithms for the mesh generation are global
#
#%Make geometry (like CEA script (A1)) using Partition algorithm% from OCC
# -- Rayon de la bariere

import salome
import geompy

import StdMeshers
import NETGENPlugin

geom  = salome.lcc.FindOrLoadComponent("FactoryServer", "GEOM")
smesh = salome.lcc.FindOrLoadComponent("FactoryServer", "SMESH")

geom.GetCurrentStudy(salome.myStudy._get_StudyId())
smesh.SetCurrentStudy(salome.myStudy)

smeshgui = salome.ImportComponentGUI("SMESH")
smeshgui.Init(salome.myStudyId);

#---------------------------------------------------------------

barier_height = 7.0
barier_radius = 5.6 / 2 # Rayon de la bariere
colis_radius = 1.0 / 2  # Rayon du colis
colis_step = 2.0        # Distance s<>parant deux colis
cc_width = 0.11         # Epaisseur du complement de colisage

# --

cc_radius = colis_radius + cc_width
from math import sqrt
colis_center = sqrt(2.0)*colis_step/2

# --

boolean_common  = 1
boolean_cut     = 2
boolean_fuse    = 3
boolean_section = 4

# --

barier = geompy.MakeCylinder(
    geom.MakePointStruct(0.,0.,0.),
    geom.MakeDirection(geom.MakePointStruct(0.,0.,1.)),
    barier_radius,
    barier_height)

# --

colis = geompy.MakeCylinder(
    geom.MakePointStruct(0.,0.,0.),
    geom.MakeDirection(geom.MakePointStruct(0.,0.,1.)),
    colis_radius,
    barier_height)

cc = geompy.MakeCylinder(
    geom.MakePointStruct(0.,0.,0.),
    geom.MakeDirection(geom.MakePointStruct(0.,0.,1.)),
    cc_radius,
    barier_height)

colis_cc = geompy.MakeCompound(
    [colis._get_Name(), cc._get_Name()])

colis_cc = geompy.MakeTranslation(
    colis_cc, colis_center, 0.0, 0.0)

colis_cc_multi = geompy.MakeMultiRotation1D(
    colis_cc,
    geom.MakeDirection(geom.MakePointStruct(0.,0.,1.)),
    geom.MakePointStruct(0.,0.,0.),
    4)

# --

alveole = geompy.Partition(
    [colis_cc_multi._get_Name(), barier._get_Name()])

ShapeTypeShell     = 3
ShapeTypeFace      = 4
ShapeTypeEdge      = 6

print "Analysis of the geometry to mesh (right after the Partition) :"

subShellList=geompy.SubShapeAll(alveole,ShapeTypeShell)
subFaceList=geompy.SubShapeAll(alveole,ShapeTypeFace)
subEdgeList=geompy.SubShapeAll(alveole,ShapeTypeEdge)

print "number of Shells in alveole : ",len(subShellList)
print "number of Faces in alveole : ",len(subFaceList)
print "number of Edges in alveole : ",len(subEdgeList)

subshapes = geompy.SubShapeAll( alveole, geompy.ShapeType["SHAPE"] )

## there are 9 subshapes

comp1 = geompy.MakeCompound( [ subshapes[0]._get_Name(), subshapes[1]._get_Name() ] );
comp2 = geompy.MakeCompound( [ subshapes[2]._get_Name(), subshapes[3]._get_Name() ] );
comp3 = geompy.MakeCompound( [ subshapes[4]._get_Name(), subshapes[5]._get_Name() ] );
comp4 = geompy.MakeCompound( [ subshapes[6]._get_Name(), subshapes[7]._get_Name() ] );

compIORs = []
compIORs.append( comp1._get_Name() );
compIORs.append( comp2._get_Name() );
compIORs.append( comp3._get_Name() );
compIORs.append( comp4._get_Name() );
comp = geompy.MakeCompound( compIORs );

alveole = geompy.MakeCompound( [ comp._get_Name(), subshapes[8]._get_Name() ]);
	
idalveole= geompy.addToStudy(alveole, "alveole")

print "Analysis of the geometry to mesh (right after the MakeCompound) :"

subShellList=geompy.SubShapeAll(alveole,ShapeTypeShell)
subFaceList=geompy.SubShapeAll(alveole,ShapeTypeFace)
subEdgeList=geompy.SubShapeAll(alveole,ShapeTypeEdge)

print "number of Shells in alveole : ",len(subShellList)
print "number of Faces in alveole : ",len(subFaceList)
print "number of Edges in alveole : ",len(subEdgeList)

status=geompy.CheckShape(alveole)
print " check status ", status

# ---- launch SMESH

# ---- create Hypothesis

print "-------------------------- create Hypothesis (In this case global hypothesis are used)"

print "-------------------------- NumberOfSegments"

numberOfSegments = 10

hypNbSeg=smesh.CreateHypothesis("NumberOfSegments", "libStdMeshersEngine.so")
hypNbSeg.SetNumberOfSegments(numberOfSegments)
print hypNbSeg.GetName()
print hypNbSeg.GetId()
print hypNbSeg.GetNumberOfSegments()

smeshgui.SetName(salome.ObjectToID(hypNbSeg), "NumberOfSegments_10")

print "-------------------------- MaxElementArea"

maxElementArea = 0.1

hypArea=smesh.CreateHypothesis("MaxElementArea", "libStdMeshersEngine.so")
hypArea.SetMaxElementArea(maxElementArea)
print hypArea.GetName()
print hypArea.GetId()
print hypArea.GetMaxElementArea()

smeshgui.SetName(salome.ObjectToID(hypArea), "MaxElementArea_0.1")

print "-------------------------- MaxElementVolume"

maxElementVolume = 0.5

hypVolume=smesh.CreateHypothesis("MaxElementVolume", "libStdMeshersEngine.so")
hypVolume.SetMaxElementVolume(maxElementVolume)
print hypVolume.GetName()
print hypVolume.GetId()
print hypVolume.GetMaxElementVolume()

smeshgui.SetName(salome.ObjectToID(hypVolume), "MaxElementVolume_0.5")

# ---- create Algorithms

print "-------------------------- create Algorithms"

print "-------------------------- Regular_1D"

regular1D = smesh.CreateHypothesis("Regular_1D", "libStdMeshersEngine.so")
smeshgui.SetName(salome.ObjectToID(regular1D), "Wire Discretisation")

print "-------------------------- MEFISTO_2D"

mefisto2D=smesh.CreateHypothesis("MEFISTO_2D", "libStdMeshersEngine.so")
smeshgui.SetName(salome.ObjectToID(mefisto2D), "MEFISTO_2D")

print "-------------------------- NETGEN_3D"

netgen3D=smesh.CreateHypothesis("NETGEN_3D", "libNETGENEngine.so")
smeshgui.SetName(salome.ObjectToID(netgen3D), "NETGEN_3D")

# ---- init a Mesh with the alveole
shape_mesh = salome.IDToObject( idalveole )

mesh=smesh.CreateMesh(shape_mesh)
smeshgui.SetName(salome.ObjectToID(mesh), "MeshAlveole")

# ---- add hypothesis to alveole

print "-------------------------- add hypothesis to alveole"

mesh.AddHypothesis(shape_mesh,regular1D)
mesh.AddHypothesis(shape_mesh,hypNbSeg)

mesh.AddHypothesis(shape_mesh,mefisto2D)
mesh.AddHypothesis(shape_mesh,hypArea)

mesh.AddHypothesis(shape_mesh,netgen3D)
mesh.AddHypothesis(shape_mesh,hypVolume)

print "-------------------------- compute the mesh of alveole "
ret=smesh.Compute(mesh,shape_mesh)

if ret != 0:
    log=mesh.GetLog(0) # no erase trace
    for linelog in log:
        print linelog
    print "Information about the Mesh_mechanic:"
    print "Number of nodes      : ", mesh.NbNodes()
    print "Number of edges      : ", mesh.NbEdges()
    print "Number of faces      : ", mesh.NbFaces()
    print "Number of triangles  : ", mesh.NbTriangles()
    print "Number of volumes: ", mesh.NbVolumes()
    print "Number of tetrahedrons: ", mesh.NbTetras() 
else:
    print "problem when computing the mesh"
    
salome.sg.updateObjBrowser(1)