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55 lines
1.2 KiB
Python
55 lines
1.2 KiB
Python
# Free Nodes
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import salome
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salome.salome_init_without_session()
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import GEOM
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from salome.geom import geomBuilder
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geompy = geomBuilder.New()
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import SMESH, SALOMEDS
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from salome.smesh import smeshBuilder
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smesh = smeshBuilder.New()
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# create box
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box = geompy.MakeBox(0., 0., 0., 100., 200., 300.)
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idbox = geompy.addToStudy(box, "box")
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# create a mesh
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mesh = smesh.Mesh(box, "Mesh_free_nodes")
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algo = mesh.Segment()
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algo.NumberOfSegments(10)
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algo = mesh.Triangle(smeshBuilder.MEFISTO)
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algo.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.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.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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salome.sg.updateObjBrowser()
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