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More examples of filter usage

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eap 2013-09-02 10:47:47 +00:00
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doc/salome/examples/filters_ex01.py
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@ -2,7 +2,27 @@
# create mesh
from SMESH_mechanic import *
# get faces with aspect ratio > 6.5
filter = smesh.GetFilter(SMESH.FACE, SMESH.FT_AspectRatio, SMESH.FT_MoreThan, 6.5)
# get faces with aspect ratio > 1.5
filter = smesh.GetFilter(SMESH.FACE, SMESH.FT_AspectRatio, SMESH.FT_MoreThan, 1.5)
ids = mesh.GetIdsFromFilter(filter)
print "Number of faces with aspect ratio > 6.5:", len(ids)
print "Number of faces with aspect ratio > 1.5:", len(ids)
# copy the faces with aspect ratio > 1.5 to another mesh;
# this demostrates that a filter can be used where usually a group or submesh is acceptable
filter.SetMesh( mesh.GetMesh() )
mesh2 = smesh.CopyMesh( filter, "AR > 1.5" )
print "Number of copied faces with aspect ratio > 1.5:", mesh2.NbFaces()
# create a Group of faces with Aspect Ratio < 1.5
group = mesh.MakeGroup("AR < 1.5", SMESH.FACE, SMESH.FT_AspectRatio, '<', 1.5)
print "Number of faces with aspect ratio < 1.5:", group.Size()
# combine several criteria to Create a Group of only Triangular faces with Aspect Ratio < 1.5;
# note that contents of a GroupOnFilter is dynamically updated as the mesh changes
crit = [ smesh.GetCriterion( SMESH.FACE, SMESH.FT_AspectRatio, '<', 1.5, BinaryOp=SMESH.FT_LogicalAND ),
smesh.GetCriterion( SMESH.FACE, SMESH.FT_ElemGeomType,'=', SMESH.Geom_TRIANGLE ) ]
filter = smesh.GetFilterFromCriteria( crit )
triaGroup = mesh.GroupOnFilter( SMESH.FACE, "Tria AR < 1.5", filter )
print "Number of triangles with aspect ratio < 1.5:", triaGroup.Size()