mirror of
https://git.salome-platform.org/gitpub/modules/smesh.git
synced 2024-09-23 11:12:51 +05:00
380 lines
9.7 KiB
Plaintext
380 lines
9.7 KiB
Plaintext
/*!
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\page tui_grouping_elements_page Grouping Elements
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<br>
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\anchor tui_create_standalone_group
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<h2>Create a Standalone Group</h2>
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\code
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import SMESH_mechanic
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smesh = SMESH_mechanic.smesh
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mesh = SMESH_mechanic.mesh
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salome = SMESH_mechanic.salome
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# Get ids of all faces with area > 100
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aFilter = smesh.GetFilter(smesh.FACE, smesh.FT_Area, smesh.FT_MoreThan, 100.)
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anIds = mesh.GetIdsFromFilter(aFilter)
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# create a group consisting of faces with area > 100
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aGroup1 = mesh.MakeGroupByIds("Area > 100", smesh.FACE, anIds)
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# create a group that contains all nodes from the mesh
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aGroup2 = mesh.CreateEmptyGroup(smesh.NODE, "all nodes")
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aGroup2.AddFrom(mesh.mesh)
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salome.sg.updateObjBrowser(1)
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\endcode
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\image html create_group.png
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<br>
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\anchor tui_create_group_on_geometry
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<h2>Create a Group on Geometry</h2>
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\code
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import salome
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import geompy
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import smesh
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# create a box
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box = geompy.MakeBox(0., 0., 0., 100., 100., 100.)
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geompy.addToStudy(box, "box")
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# add the first face of the box to the study
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subShapeList = geompy.SubShapeAll(box, geompy.ShapeType["FACE"])
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face = subShapeList[0]
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geompy.addToStudyInFather(box, face, "face 1")
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# create group of edges on the face
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aGeomGroupE = geompy.CreateGroup(face, geompy.ShapeType["EDGE"])
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geompy.AddObject(aGeomGroupE, 3)
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geompy.AddObject(aGeomGroupE, 6)
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geompy.AddObject(aGeomGroupE, 8)
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geompy.AddObject(aGeomGroupE, 10)
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geompy.addToStudyInFather(face, aGeomGroupE, "Group of Edges")
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# create quadrangle 2D mesh on the box
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quadra = smesh.Mesh(box, "Box : quadrangle 2D mesh")
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algo1D = quadra.Segment()
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quadra.Quadrangle()
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algo1D.NumberOfSegments(7)
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# compute the mesh
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quadra.Compute()
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# create SMESH group on the face with name "SMESHGroup1"
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aSmeshGroup1 = quadra.GroupOnGeom(face, "SMESHGroup1")
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# create SMESH group on <aGeomGroupE> with default name
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aSmeshGroup2 = quadra.GroupOnGeom(aGeomGroupE)
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salome.sg.updateObjBrowser(1)
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\endcode
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<br>
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\anchor tui_create_group_on_filter
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<h2>Create a Group on Filter</h2>
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\code
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from smesh import *
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SetCurrentStudy(salome.myStudy)
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box = geompy.MakeBoxDXDYDZ(10,10,10)
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# make a mesh with quadrangles of different area in range [1,16]
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mesh = Mesh(box,"Quad mesh")
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hyp1D = mesh.Segment().StartEndLength( 1, 4 )
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mesh.Quadrangle()
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mesh.Compute()
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# create a group on filter selecting faces of medium size
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critaria = [ \
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GetCriterion(FACE, FT_Area, ">", 1.1, BinaryOp=FT_LogicalAND ),
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GetCriterion(FACE, FT_Area, "<", 15.0 )
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]
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filt = GetFilterFromCriteria( critaria )
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filtGroup = mesh.GroupOnFilter( FACE, "group on filter", filt )
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print "Group on filter contains %s elemens" % filtGroup.Size()
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# group on filter is updated if the mesh is modified
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hyp1D.SetStartLength( 2.5 )
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hyp1D.SetEndLength( 2.5 )
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mesh.Compute()
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print "After mesh change, group on filter contains %s elemens" % filtGroup.Size()
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# set a new filter defining the group
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filt2 = GetFilter( FACE, FT_RangeOfIds, "1-50" )
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filtGroup.SetFilter( filt2 )
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print "With a new filter, group on filter contains %s elemens" % filtGroup.Size()
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# group is updated at modification of the filter
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filt2.SetCriteria( [ GetCriterion( FACE, FT_RangeOfIds, "1-70" )])
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filtIDs3 = filtGroup.GetIDs()
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print "After filter modification, group on filter contains %s elemens" % filtGroup.Size()
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salome.sg.updateObjBrowser(1)
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\endcode
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<br>
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\anchor tui_edit_group
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<h2>Edit a Group</h2>
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\code
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import SMESH_mechanic
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smesh = SMESH_mechanic.smesh
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mesh = SMESH_mechanic.mesh
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salome = SMESH_mechanic.salome
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# Get ids of all faces with area > 35
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aFilter = smesh.GetFilter(smesh.FACE, smesh.FT_Area, smesh.FT_MoreThan, 35.)
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anIds = mesh.GetIdsFromFilter(aFilter)
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print "Criterion: Area > 35, Nb = ", len(anIds)
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# create a group by adding elements with area > 35
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aGroup = mesh.CreateEmptyGroup(smesh.FACE, "Area > 35")
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aGroup.Add(anIds)
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# Get ids of all faces with area > 40
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aFilter = smesh.GetFilter(smesh.FACE, smesh.FT_Area, smesh.FT_MoreThan, 40.)
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anIds = mesh.GetIdsFromFilter(aFilter)
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print "Criterion: Area > 40, Nb = ", len(anIds)
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# create a group of elements with area [35; 40] by removing elements with area > 40 from group aGroup
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aGroup.Remove(anIds)
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# print the result
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aGroupElemIDs = aGroup.GetListOfID()
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print "Criterion: 35 < Area < 40, Nb = ", len(aGroupElemIDs)
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j = 1
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for i in range(len(aGroupElemIDs)):
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if j > 20: j = 1; print ""
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print aGroupElemIDs[i],
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j = j + 1
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pass
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print ""
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salome.sg.updateObjBrowser(1)
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\endcode
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\image html editing_groups1.png
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\image html editing_groups2.png
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<br>
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\anchor tui_union_of_groups
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<h2>Union of groups</h2>
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\code
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import SMESH_mechanic
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smesh = SMESH_mechanic.smesh
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mesh = SMESH_mechanic.mesh
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salome = SMESH_mechanic.salome
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# Criterion : AREA > 20
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aFilter = smesh.GetFilter(smesh.FACE, smesh.FT_Area, smesh.FT_MoreThan, 20.)
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anIds = mesh.GetIdsFromFilter(aFilter)
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print "Criterion: Area > 20, Nb = ", len( anIds )
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# create a group by adding elements with area > 20
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aGroup1 = mesh.CreateEmptyGroup(smesh.FACE, "Area > 20")
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aGroup1.Add(anIds)
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# Criterion : AREA = 20
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aFilter = smesh.GetFilter(smesh.FACE, smesh.FT_Area, smesh.FT_EqualTo, 20.)
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anIds = mesh.GetIdsFromFilter(aFilter)
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print "Criterion: Area = 20, Nb = ", len( anIds )
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# create a group by adding elements with area = 20
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aGroup2 = mesh.CreateEmptyGroup( smesh.FACE, "Area = 20" )
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aGroup2.Add(anIds)
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# create union group : area >= 20
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aGroup3 = mesh.UnionListOfGroups([aGroup1, aGroup2], "Area >= 20")
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print "Criterion: Area >= 20, Nb = ", len(aGroup3.GetListOfID())
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# Please note that also there is UnionGroups() method which works with two groups only
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# Criterion : AREA < 20
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aFilter = smesh.GetFilter(smesh.FACE, smesh.FT_Area, smesh.FT_LessThan, 20.)
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anIds = mesh.GetIdsFromFilter(aFilter)
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print "Criterion: Area < 20, Nb = ", len(anIds)
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# create a group by adding elements with area < 20
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aGroup4 = mesh.CreateEmptyGroup(smesh.FACE, "Area < 20")
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aGroup4.Add(anIds)
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# create union group : area >= 20 and area < 20
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aGroup5 = mesh.UnionListOfGroups([aGroup3, aGroup4], "Any Area")
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print "Criterion: Any Area, Nb = ", len(aGroup5.GetListOfID())
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salome.sg.updateObjBrowser(1)
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\endcode
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\image html union_groups1.png
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\image html union_groups2.png
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\image html union_groups3.png
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<br>
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\anchor tui_intersection_of_groups
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<h2>Intersection of groups</h2>
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\code
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import SMESH_mechanic
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smesh = SMESH_mechanic.smesh
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mesh = SMESH_mechanic.mesh
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salome = SMESH_mechanic.salome
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# Criterion : AREA > 20
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aFilter = smesh.GetFilter(smesh.FACE, smesh.FT_Area, smesh.FT_MoreThan, 20.)
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anIds = mesh.GetIdsFromFilter(aFilter)
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print "Criterion: Area > 20, Nb = ", len(anIds)
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# create a group by adding elements with area > 20
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aGroup1 = mesh.CreateEmptyGroup(smesh.FACE, "Area > 20")
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aGroup1.Add(anIds)
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# Criterion : AREA < 60
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aFilter = smesh.GetFilter(smesh.FACE, smesh.FT_Area, smesh.FT_LessThan, 60.)
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anIds = mesh.GetIdsFromFilter(aFilter)
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print "Criterion: Area < 60, Nb = ", len(anIds)
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# create a group by adding elements with area < 60
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aGroup2 = mesh.CreateEmptyGroup(smesh.FACE, "Area < 60")
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aGroup2.Add(anIds)
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# create an intersection of groups : 20 < area < 60
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aGroup3 = mesh.IntersectListOfGroups([aGroup1, aGroup2], "20 < Area < 60")
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print "Criterion: 20 < Area < 60, Nb = ", len(aGroup3.GetListOfID())
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# Please note that also there is IntersectGroups() method which works with two groups only
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salome.sg.updateObjBrowser(1)
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\endcode
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\image html intersect_groups1.png
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\image html intersect_groups2.png
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\image html intersect_groups3.png
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<br>
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\anchor tui_cut_of_groups
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<h2>Cut of groups</h2>
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\code
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import SMESH_mechanic
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smesh = SMESH_mechanic.smesh
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mesh = SMESH_mechanic.mesh
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salome = SMESH_mechanic.salome
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# Criterion : AREA > 20
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aFilter = smesh.GetFilter(smesh.FACE, smesh.FT_Area, smesh.FT_MoreThan, 20.)
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anIds = mesh.GetIdsFromFilter(aFilter)
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print "Criterion: Area > 20, Nb = ", len(anIds)
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# create a group by adding elements with area > 20
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aGroupMain = mesh.MakeGroupByIds("Area > 20", smesh.FACE, anIds)
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# Criterion : AREA < 60
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aFilter = smesh.GetFilter(smesh.FACE, smesh.FT_Area, smesh.FT_LessThan, 60.)
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anIds = mesh.GetIdsFromFilter(aFilter)
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print "Criterion: Area < 60, Nb = ", len(anIds)
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# create a group by adding elements with area < 60
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aGroupTool = mesh.MakeGroupByIds("Area < 60", smesh.FACE, anIds)
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# create a cut of groups : area >= 60
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aGroupRes = mesh.CutGroups(aGroupMain, aGroupTool, "Area >= 60")
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print "Criterion: Area >= 60, Nb = ", len(aGroupRes.GetListOfID())
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# Please note that also there is CutListOfGroups() method which works with lists of groups of any lengths
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salome.sg.updateObjBrowser(1)
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\endcode
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\image html cut_groups1.png
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\image html cut_groups2.png
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\image html cut_groups3.png
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<br>
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\anchor tui_create_dim_group
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<h2>Creating groups of entities from existing groups of superior dimensions</h2>
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\code
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import SMESH_mechanic
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smesh = SMESH_mechanic.smesh
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mesh = SMESH_mechanic.mesh
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salome = SMESH_mechanic.salome
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# Criterion : AREA > 100
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aFilter = smesh.GetFilter(smesh.FACE, smesh.FT_Area, smesh.FT_MoreThan, 100.)
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anIds = mesh.GetIdsFromFilter(aFilter)
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print "Criterion: Area > 100, Nb = ", len(anIds)
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# create a group by adding elements with area > 100
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aSrcGroup1 = mesh.MakeGroupByIds("Area > 100", smesh.FACE, anIds)
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# Criterion : AREA < 30
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aFilter = smesh.GetFilter(smesh.FACE, smesh.FT_Area, smesh.FT_LessThan, 30.)
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anIds = mesh.GetIdsFromFilter(aFilter)
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print "Criterion: Area < 30, Nb = ", len(anIds)
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# create a group by adding elements with area < 30
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aSrcGroup2 = mesh.MakeGroupByIds("Area < 30", smesh.FACE, anIds)
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# Create group of edges using source groups of faces
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aGrp = mesh.CreateDimGroup( [aSrcGroup1, aSrcGroup2], smesh.EDGE, "Edges" )
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# Create group of nodes using source groups of faces
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aGrp = mesh.CreateDimGroup( [aSrcGroup1, aSrcGroup2], smesh.NODE, "Nodes" )
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salome.sg.updateObjBrowser(1)
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\endcode
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\image html dimgroup_tui1.png
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<center>Source groups of faces</center>
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\image html dimgroup_tui2.png
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<center>Result groups of edges and nodes</center>
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*/
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