smesh/doc/salome/examples/transforming_meshes_ex09.py

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# Sew Free Borders
import salome
salome.salome_init()
import GEOM
from salome.geom import geomBuilder
geompy = geomBuilder.New(salome.myStudy)
import SMESH, SALOMEDS
from salome.smesh import smeshBuilder
smesh = smeshBuilder.New(salome.myStudy)
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# make two not sewed quadranges
OY0 = geompy.MakeVectorDXDYDZ(0, 1, 0)
OY1 = geompy.MakeTranslation( OY0, 1, 0, 0, theName="OY1" )
OY2 = geompy.MakeTranslation( OY0, 1.01, 0, 0, theName="OY2" )
OY3 = geompy.MakeTranslation( OY0, 2, 0, 0 )
q1 = geompy.MakeQuad2Edges( OY0, OY1 )
q2 = geompy.MakeQuad2Edges( OY2, OY3 )
shape = geompy.MakeCompound( [q1,q2], theName='shape' )
# make a non-uniform quadrangle mesh on two faces
mesh = smesh.Mesh(shape, "Two faces : quadrangle mesh")
mesh.Segment().Arithmetic1D( 0.1, 0.4 )
mesh.Segment(q1).NumberOfSegments( 5 )
mesh.Quadrangle()
mesh.Compute()
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# sew free borders
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segs1 = mesh.GetSubMeshElementsId( OY1 ) # mesh segments generated on borders
segs2 = mesh.GetSubMeshElementsId( OY2 )
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FirstNodeID1 = mesh.GetElemNode( segs1[0], 0 )
SecondNodeID1 = mesh.GetElemNode( segs1[0], 1 )
LastNodeID1 = mesh.GetElemNode( segs1[-1], 1 )
FirstNodeID2 = mesh.GetElemNode( segs2[0], 0 )
SecondNodeID2 = mesh.GetElemNode( segs2[0], 1 )
LastNodeID2 = mesh.GetElemNode( segs2[-1], 1 )
CreatePolygons = True
CreatePolyedrs = False
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res = mesh.SewFreeBorders(FirstNodeID1, SecondNodeID1, LastNodeID1,
FirstNodeID2, SecondNodeID2, LastNodeID2,
CreatePolygons, CreatePolyedrs )
print res
print "nb polygons:", mesh.NbPolygons()
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