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50 lines
1.1 KiB
Python
50 lines
1.1 KiB
Python
# Free Nodes
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import salome
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salome.salome_init_without_session()
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import SMESH
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from salome.geom import geomBuilder
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from salome.smesh import smeshBuilder
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geom_builder = geomBuilder.New()
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smesh_builder = smeshBuilder.New()
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# create box
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box = geom_builder.MakeBox(0., 0., 0., 100., 200., 300.)
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idbox = geom_builder.addToStudy(box, "box")
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# create a mesh
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mesh = smesh_builder.Mesh(box, "Mesh_free_nodes")
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mesh.Segment().NumberOfSegments(10)
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mesh.Triangle().MaxElementArea(150.)
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mesh.Compute()
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# Remove some elements to obtain free nodes
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# Criterion : AREA < 80.
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area_margin = 80.
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aFilter = smesh_builder.GetFilter(SMESH.FACE, SMESH.FT_Area, SMESH.FT_LessThan, area_margin)
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anIds = mesh.GetIdsFromFilter(aFilter)
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mesh.RemoveElements(anIds)
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# criterion : free nodes
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aFilter = smesh_builder.GetFilter(SMESH.NODE, SMESH.FT_FreeNodes)
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anNodeIds = mesh.GetIdsFromFilter(aFilter)
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# create a group
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aGroup = mesh.CreateEmptyGroup(SMESH.NODE, "Free_nodes")
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aGroup.Add(anNodeIds)
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# print the result
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print("Criterion: Free nodes Nb = ", len(anNodeIds))
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j = 1
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for i in range(len(anNodeIds)):
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if j > 20: j = 1; print("")
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print(anNodeIds[i], end=' ')
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j = j + 1
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pass
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print("")
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