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2005-11-28 14:57:47 +05:00
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<title>Grouping Elements</title>
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<h1>Grouping Elements</h1>
<h3><a name=bookmark>Create a Group</a></h3>
<p class="whs1">&nbsp;</p>
<p class="whs1">import SMESH</p>
<p class="whs1">import SMESH_mechanic</p>
<p class="whs1">&nbsp;</p>
<p class="whs1">smesh &nbsp;=
SMESH_mechanic.smesh</p>
<p class="whs1">mesh &nbsp;&nbsp;=
SMESH_mechanic.mesh</p>
<p class="whs1">salome = SMESH_mechanic.salome</p>
<p class="whs1">&nbsp;</p>
<p class="whs1">aFilterMgr = smesh.CreateFilterManager()</p>
<p class="whs1">&nbsp;</p>
<p class="whs2"># Criterion : AREA &gt;
100</p>
<p class="whs1">&nbsp;</p>
<p class="whs1">aFunctor = aFilterMgr.CreateArea()</p>
<p class="whs1">aPredicate = aFilterMgr.CreateMoreThan()</p>
<p class="whs1">aPredicate.SetNumFunctor(
aFunctor )</p>
<p class="whs1">aPredicate.SetMargin(
100 )</p>
<p class="whs1">&nbsp;</p>
<p class="whs1">aFilter = aFilterMgr.CreateFilter()</p>
<p class="whs1">aFilter.SetPredicate(
aPredicate )</p>
<p class="whs1">&nbsp;</p>
<p class="whs1">anIds = aFilter.GetElementsId(
mesh )</p>
<p class="whs2">&nbsp;</p>
<p class="whs2"># print the result</p>
<p class="whs1">print &quot;Criterion:
Area &gt; 100 Nb = &quot;, len( anIds )</p>
<p class="whs1">for i in range(
len( anIds ) ):</p>
<p class="whs1">&nbsp;&nbsp;print
anIds[ i ]</p>
<p class="whs1">&nbsp;</p>
<p class="whs2"># create a group consisting
of faces with area &gt; 100</p>
<p class="whs1">aGroup = mesh.CreateGroup(
SMESH.FACE, &quot;Area &gt; 100&quot; )</p>
<p class="whs1">aGroup.Add( anIds
)</p>
<p class="whs1">&nbsp;</p>
<p class="whs2"><span style="font-family: 'Lucida Console', monospace;">salome.sg.updateObjBrowser(1)</span>
</p>
<p class="whs2">&nbsp;</p>
<h3><a name=bookmark1>Edit a Group</a></h3>
<p class="whs1">import SMESH</p>
<p class="whs1">import SMESH_mechanic</p>
<p class="whs1">&nbsp;</p>
<p class="whs1">smesh &nbsp;=
SMESH_mechanic.smesh</p>
<p class="whs1">mesh &nbsp;&nbsp;=
SMESH_mechanic.mesh</p>
<p class="whs1">salome = SMESH_mechanic.salome</p>
<p class="whs1">&nbsp;</p>
<p class="whs1">aFilterMgr = smesh.CreateFilterManager()</p>
<p class="whs1">&nbsp;</p>
<p class="whs2"># Criterion : AREA &gt;
20</p>
<p class="whs2">&nbsp;</p>
<p class="whs1">aFunctor = aFilterMgr.CreateArea()</p>
<p class="whs1">aPredicate = aFilterMgr.CreateMoreThan()</p>
<p class="whs1">aPredicate.SetNumFunctor(
aFunctor )</p>
<p class="whs1">aPredicate.SetMargin(
30 )</p>
<p class="whs1">&nbsp;</p>
<p class="whs1">aFilter = aFilterMgr.CreateFilter()</p>
<p class="whs1">aFilter.SetPredicate(
aPredicate )</p>
<p class="whs1">&nbsp;</p>
<p class="whs1">anIds = aFilter.GetElementsId(
mesh )</p>
<p class="whs1">&nbsp;</p>
<p class="whs2"># create a group by adding
elements with area &gt; 20</p>
<p class="whs1">aGroup = mesh.CreateGroup(
SMESH.FACE, &quot;Area &gt; 20&quot; )</p>
<p class="whs1">aGroup.Add( anIds
)</p>
<p class="whs1">&nbsp;</p>
<p class="whs1">print &quot;Criterion:
Area &gt; 20 Nb = &quot;, len( anIds )</p>
<p class="whs1">for i in range(
len( anIds ) ):</p>
<p class="whs1">&nbsp;&nbsp;print
anIds[ i ]</p>
<p class="whs1">&nbsp;</p>
<p class="whs2"># Criterion : AREA &gt;
60</p>
<p class="whs2">&nbsp;</p>
<p class="whs1">aFunctor = aFilterMgr.CreateArea()</p>
<p class="whs1">aPredicate = aFilterMgr.CreateMoreThan()</p>
<p class="whs1">aPredicate.SetNumFunctor(
aFunctor )</p>
<p class="whs1">aPredicate.SetMargin(
60 )</p>
<p class="whs1">&nbsp;</p>
<p class="whs1">aFilter = aFilterMgr.CreateFilter()</p>
<p class="whs1">aFilter.SetPredicate(
aPredicate )</p>
<p class="whs1">&nbsp;</p>
<p class="whs1">anIds = aFilter.GetElementsId(
mesh )</p>
<p class="whs2">&nbsp;</p>
<p class="whs2"># create a group of elements
with area [20; 60] by removing elements with area &gt; 60 from &nbsp;group
aGroup </p>
<p class="whs1">aGroup.Remove(anIds)</p>
<p class="whs2">&nbsp;</p>
<p class="whs2"># print the result</p>
<p class="whs1">aGroupElemIDs =
aGroup.GetListOfID()</p>
<p class="whs1">print &quot;Criterion:
20 &lt; Area &lt; 60 = &quot;, len( aGroupElemIDs )</p>
<p class="whs1">for i in range(
len( aGroupElemIDs ) ):</p>
<p class="whs1">&nbsp;&nbsp;print
aGroupElemIDs[ i ]</p>
<p class="whs1">&nbsp;</p>
<p class="whs2"><span style="font-family: 'Lucida Console', monospace;">salome.sg.updateObjBrowser(1)</span>
</p>
<p class="whs2">&nbsp;</p>
<h3><a name=bookmark2>Union of two groups</a></h3>
<p class="whs1">import SMESH</p>
<p class="whs1">import SMESH_mechanic</p>
<p class="whs1">&nbsp;</p>
<p class="whs1">smesh &nbsp;=
SMESH_mechanic.smesh</p>
<p class="whs1">mesh &nbsp;&nbsp;=
SMESH_mechanic.mesh</p>
<p class="whs1">salome = SMESH_mechanic.salome</p>
<p class="whs1">&nbsp;</p>
<p class="whs1">aFilterMgr = smesh.CreateFilterManager()</p>
<p class="whs1">&nbsp;</p>
<p class="whs2"># Criterion : AREA &gt;
20</p>
<p class="whs2">&nbsp;</p>
<p class="whs1">aFunctor = aFilterMgr.CreateArea()</p>
<p class="whs1">aPredicate = aFilterMgr.CreateMoreThan()</p>
<p class="whs1">aPredicate.SetNumFunctor(
aFunctor )</p>
<p class="whs1">aPredicate.SetMargin(
20 )</p>
<p class="whs1">&nbsp;</p>
<p class="whs1">aFilter = aFilterMgr.CreateFilter()</p>
<p class="whs1">aFilter.SetPredicate(
aPredicate )</p>
<p class="whs1">&nbsp;</p>
<p class="whs1">anIds = aFilter.GetElementsId(
mesh )</p>
<p class="whs1">&nbsp;</p>
<p class="whs2"># create a group by adding
elements with area &gt; 20</p>
<p class="whs1">aGroup1 = mesh.CreateGroup(
SMESH.FACE, &quot;Area &gt; 20&quot; )</p>
<p class="whs1">aGroup1.Add( anIds
)</p>
<p class="whs1">&nbsp;</p>
<p class="whs1">print &quot;Criterion:
Area &gt; 20 Nb = &quot;, len( anIds )</p>
<p class="whs1">for i in range(
len( anIds ) ):</p>
<p class="whs1">&nbsp;&nbsp;print
anIds[ i ]</p>
<p class="whs1">&nbsp;</p>
<p class="whs2"># Criterion : AREA = 20</p>
<p class="whs2">&nbsp;</p>
<p class="whs1">aFunctor = aFilterMgr.CreateArea()</p>
<p class="whs1">aPredicate = aFilterMgr.CreateEqualTo()</p>
<p class="whs1">aPredicate.SetNumFunctor(
aFunctor )</p>
<p class="whs1">aPredicate.SetMargin(
20 )</p>
<p class="whs1">&nbsp;</p>
<p class="whs1">aFilter = aFilterMgr.CreateFilter()</p>
<p class="whs1">aFilter.SetPredicate(
aPredicate )</p>
<p class="whs1">&nbsp;</p>
<p class="whs1">anIds = aFilter.GetElementsId(
mesh )</p>
<p class="whs2">&nbsp;</p>
<p class="whs2"># create a group by adding
elements with area &gt; 20</p>
<p class="whs1">aGroup2 = mesh.CreateGroup(
SMESH.FACE, &quot;Area = 20&quot; )</p>
<p class="whs1">aGroup2.Add( anIds
)</p>
<p class="whs1">&nbsp;</p>
<p class="whs1">print &quot;Criterion:
Area = 20 Nb = &quot;, len( anIds )</p>
<p class="whs1">for i in range(
len( anIds ) ):</p>
<p class="whs1">&nbsp;&nbsp;print
anIds[ i ]</p>
<p class="whs2">&nbsp;</p>
<p class="whs2"># create union group :
area &gt;= 20</p>
<p class="whs1">aGroup3 = mesh.UnionGroups(aGroup1,
aGroup2, &quot;Area &gt;= 20&quot;)</p>
<p class="whs1">print &quot;Criterion:
Area &gt;= 20 Nb = &quot;, len( aGroup3.GetListOfID() )</p>
<p class="whs1">&nbsp;</p>
<p class="whs2"># Criterion : AREA &lt;
20</p>
<p class="whs2">&nbsp;</p>
<p class="whs1">aFunctor = aFilterMgr.CreateArea()</p>
<p class="whs1">aPredicate = aFilterMgr.CreateLessThan()</p>
<p class="whs1">aPredicate.SetNumFunctor(
aFunctor )</p>
<p class="whs1">aPredicate.SetMargin(
20 )</p>
<p class="whs1">&nbsp;</p>
<p class="whs1">aFilter = aFilterMgr.CreateFilter()</p>
<p class="whs1">aFilter.SetPredicate(
aPredicate )</p>
<p class="whs1">&nbsp;</p>
<p class="whs1">anIds = aFilter.GetElementsId(
mesh )</p>
<p class="whs1">&nbsp;</p>
<p class="whs2"># create a group by adding
elements with area &lt; 20</p>
<p class="whs1">aGroup4 = mesh.CreateGroup(
SMESH.FACE, &quot;Area &lt; 20&quot; )</p>
<p class="whs1">aGroup4.Add( anIds
)</p>
<p class="whs1">&nbsp;</p>
<p class="whs1">print &quot;Criterion:
Area &lt; 20 Nb = &quot;, len( anIds )</p>
<p class="whs1">for i in range(
len( anIds ) ):</p>
<p class="whs1">&nbsp;&nbsp;print
anIds[ i ]</p>
<p class="whs2">&nbsp;&nbsp;</p>
<p class="whs2"># create union group :
area &gt;= 20 and area &lt; 20</p>
<p class="whs1">aGroup5 = mesh.UnionGroups(aGroup3,
aGroup4, &quot;Any Area&quot;)</p>
<p class="whs1">print &quot;Criterion:
Any Area Nb = &quot;, len( aGroup5.GetListOfID() )</p>
<p class="whs1">&nbsp;</p>
<p class="whs1">salome.sg.updateObjBrowser(1)
</p>
<p class="whs1">&nbsp;</p>
<h3><a name=bookmark3>Intersection of two groups</a></h3>
<p class="whs1">import SMESH</p>
<p class="whs1">import SMESH_mechanic</p>
<p class="whs1">&nbsp;</p>
<p class="whs1">smesh &nbsp;=
SMESH_mechanic.smesh</p>
<p class="whs1">mesh &nbsp;&nbsp;=
SMESH_mechanic.mesh</p>
<p class="whs1">salome = SMESH_mechanic.salome</p>
<p class="whs1">&nbsp;</p>
<p class="whs1">aFilterMgr = smesh.CreateFilterManager()</p>
<p class="whs1">&nbsp;</p>
<p class="whs2"># Criterion : AREA &gt;
20</p>
<p class="whs2">&nbsp;</p>
<p class="whs1">aFunctor = aFilterMgr.CreateArea()</p>
<p class="whs1">aPredicate = aFilterMgr.CreateMoreThan()</p>
<p class="whs1">aPredicate.SetNumFunctor(
aFunctor )</p>
<p class="whs1">aPredicate.SetMargin(
20 )</p>
<p class="whs1">&nbsp;</p>
<p class="whs1">aFilter = aFilterMgr.CreateFilter()</p>
<p class="whs1">aFilter.SetPredicate(
aPredicate )</p>
<p class="whs1">&nbsp;</p>
<p class="whs1">anIds = aFilter.GetElementsId(
mesh )</p>
<p class="whs1">&nbsp;</p>
<p class="whs2"># create a group by adding
elements with area &gt; 20</p>
<p class="whs1">aGroup1 = mesh.CreateGroup(
SMESH.FACE, &quot;Area &gt; 20&quot; )</p>
<p class="whs1">aGroup1.Add( anIds
)</p>
<p class="whs1">&nbsp;</p>
<p class="whs1">print &quot;Criterion:
Area &gt; 20 Nb = &quot;, len( anIds )</p>
<p class="whs1">for i in range(
len( anIds ) ):</p>
<p class="whs1">&nbsp;&nbsp;print
anIds[ i ]</p>
<p class="whs1">&nbsp;</p>
<p class="whs2"># Criterion : AREA &lt;
60</p>
<p class="whs2">&nbsp;</p>
<p class="whs1">aFunctor = aFilterMgr.CreateArea()</p>
<p class="whs1">aPredicate = aFilterMgr.CreateLessThan()</p>
<p class="whs1">aPredicate.SetNumFunctor(
aFunctor )</p>
<p class="whs1">aPredicate.SetMargin(
60 )</p>
<p class="whs1">&nbsp;</p>
<p class="whs1">aFilter = aFilterMgr.CreateFilter()</p>
<p class="whs1">aFilter.SetPredicate(
aPredicate )</p>
<p class="whs1">&nbsp;</p>
<p class="whs1">anIds = aFilter.GetElementsId(
mesh )</p>
<p class="whs1">&nbsp;</p>
<p class="whs2"># create a group by adding
elements with area &lt; 60</p>
<p class="whs1">aGroup2 = mesh.CreateGroup(
SMESH.FACE, &quot;Area &lt; 60&quot; )</p>
<p class="whs1">aGroup2.Add( anIds
)</p>
<p class="whs1">&nbsp;</p>
<p class="whs1">print &quot;Criterion:
Area &lt; 60 Nb = &quot;, len( anIds )</p>
<p class="whs1">for i in range(
len( anIds ) ):</p>
<p class="whs1">&nbsp;&nbsp;print
anIds[ i ]</p>
<p class="whs2">&nbsp;&nbsp;</p>
<p class="whs2"># create an intersection
of groups : 20 &lt; area &lt; 60</p>
<p class="whs1">aGroup3 = mesh.IntersectGroups(aGroup1,
aGroup2, &quot;20 &lt; Area &lt; 60&quot;)</p>
<p class="whs1">print &quot;Criterion:
20 &lt; Area &lt; 60 Nb = &quot;, len( aGroup3.GetListOfID() )</p>
<p class="whs1">&nbsp;</p>
<p class="whs2"><span style="font-family: 'Lucida Console', monospace;">salome.sg.updateObjBrowser(1)</span>
</p>
<p class="whs2">&nbsp;</p>
<h3><a name=bookmark4>Cut of two groups</a></h3>
<p class="whs1">import SMESH</p>
<p class="whs1">import SMESH_mechanic</p>
<p class="whs1">&nbsp;</p>
<p class="whs1">smesh &nbsp;=
SMESH_mechanic.smesh</p>
<p class="whs1">mesh &nbsp;&nbsp;=
SMESH_mechanic.mesh</p>
<p class="whs1">salome = SMESH_mechanic.salome</p>
<p class="whs1">&nbsp;</p>
<p class="whs1">aFilterMgr = smesh.CreateFilterManager()</p>
<p class="whs1">&nbsp;</p>
<p class="whs2"># Criterion : AREA &gt;
20</p>
<p class="whs2">&nbsp;</p>
<p class="whs1">aFunctor = aFilterMgr.CreateArea()</p>
<p class="whs1">aPredicate = aFilterMgr.CreateMoreThan()</p>
<p class="whs1">aPredicate.SetNumFunctor(
aFunctor )</p>
<p class="whs1">aPredicate.SetMargin(
20 )</p>
<p class="whs1">&nbsp;</p>
<p class="whs1">aFilter = aFilterMgr.CreateFilter()</p>
<p class="whs1">aFilter.SetPredicate(
aPredicate )</p>
<p class="whs1">&nbsp;</p>
<p class="whs1">anIds = aFilter.GetElementsId(
mesh )</p>
<p class="whs1">&nbsp;</p>
<p class="whs2"># create a group by adding
elements with area &gt; 20</p>
<p class="whs1">aGroupMain = mesh.CreateGroup(
SMESH.FACE, &quot;Area &gt; 20&quot; )</p>
<p class="whs1">aGroupMain.Add(
anIds )</p>
<p class="whs1">&nbsp;</p>
<p class="whs1">print &quot;Criterion:
Area &gt; 20 Nb = &quot;, len( anIds )</p>
<p class="whs1">for i in range(
len( anIds ) ):</p>
<p class="whs1">&nbsp;&nbsp;print
anIds[ i ]</p>
<p class="whs1">&nbsp;</p>
<p class="whs2"># Criterion : AREA &lt;
60</p>
<p class="whs2">&nbsp;</p>
<p class="whs1">aFunctor = aFilterMgr.CreateArea()</p>
<p class="whs1">aPredicate = aFilterMgr.CreateLessThan()</p>
<p class="whs1">aPredicate.SetNumFunctor(
aFunctor )</p>
<p class="whs1">aPredicate.SetMargin(
60 )</p>
<p class="whs1">&nbsp;</p>
<p class="whs1">aFilter = aFilterMgr.CreateFilter()</p>
<p class="whs1">aFilter.SetPredicate(
aPredicate )</p>
<p class="whs1">&nbsp;</p>
<p class="whs1">anIds = aFilter.GetElementsId(
mesh )</p>
<p class="whs1">&nbsp;</p>
<p class="whs2"># create a group by adding
elements with area &lt; 60</p>
<p class="whs1">aGroupTool = mesh.CreateGroup(
SMESH.FACE, &quot;Area &lt; 60&quot; )</p>
<p class="whs1">aGroupTool.Add(
anIds )</p>
<p class="whs1">&nbsp;</p>
<p class="whs1">print &quot;Criterion:
Area &lt; 60 Nb = &quot;, len( anIds )</p>
<p class="whs1">for i in range(
len( anIds ) ):</p>
<p class="whs1">&nbsp;&nbsp;print
anIds[ i ]</p>
<p class="whs2">&nbsp;&nbsp;</p>
<p class="whs2"># create an intersection
of groups : area &gt;= 60</p>
<p class="whs1">aGroupRes = mesh.CutGroups(aGroupMain,
aGroupTool, &quot;Area &gt;= 60&quot;)</p>
<p class="whs1">print &quot;Criterion:
Area &gt;= 60 Nb = &quot;, len( aGroupRes.GetListOfID() )</p>
<p class="whs1">&nbsp;</p>
<p class="whs1">salome.sg.updateObjBrowser(1)
</p>
<p class="whs1">&nbsp;</p>
<p class="whs2">&nbsp;</p>
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