<!doctype HTML public "-//W3C//DTD HTML 4.0 Frameset//EN">
<html>
<head>
<title>Modifying Meshes</title>
<meta http-equiv="content-type" content="text/html; charset=windows-1252">
<meta name="generator" content="RoboHelp by eHelp Corporation www.ehelp.com"><style>
<!--
P { margin-top:0pt; margin-bottom:0pt; }
LI.kadov-P { }
-->
</style><style type="text/css">
<!--
p.whs1 { margin-top:0pt; margin-bottom:0pt; font-family:'Lucida Console' , monospace; }
p.whs2 { margin-top:0pt; margin-bottom:0pt; }
p.whs3 { margin-top:0pt; margin-bottom:0pt; font-family:'Times New Roman' , serif; }
h4.whs4 { margin-top:0pt; margin-bottom:0pt; }
p.whs5 { margin-top:0.5pt; margin-bottom:0pt; font-family:'Lucida Console' , monospace; }
p.whs6 { margin-top:0.5pt; margin-bottom:0pt; }
p.whs7 { font-family:'Lucida Console' , monospace; }
p.whs8 { font-family:'Times New Roman' , serif; }
p.whs9 { margin-left:40px; font-family:'Lucida Console' , monospace; }
-->
</style><script type="text/javascript" language="JavaScript">
<!--
if ((navigator.appName == "Netscape") && (parseInt(navigator.appVersion) == 4))
{
var strNSS = "<style type='text/css'>";
strNSS += "p.whs1 {margin-top:1pt;margin-bottom:1pt; }";
strNSS += "p.whs2 {margin-top:1pt;margin-bottom:1pt; }";
strNSS += "p.whs3 {margin-top:1pt;margin-bottom:1pt; }";
strNSS += "h4.whs4 {margin-top:1pt;margin-bottom:1pt; }";
strNSS += "p.whs5 {margin-top:1pt;margin-bottom:1pt; }";
strNSS += "p.whs6 {margin-top:1pt;margin-bottom:1pt; }";
strNSS +="</style>";
document.write(strNSS);
}
//-->
</script>
<script type="text/javascript" language="JavaScript" title="WebHelpInlineScript">
<!--
function reDo() {
if (innerWidth != origWidth || innerHeight != origHeight)
location.reload();
}
if ((parseInt(navigator.appVersion) == 4) && (navigator.appName == "Netscape")) {
origWidth = innerWidth;
origHeight = innerHeight;
onresize = reDo;
}
onerror = null;
//-->
</script>
<style type="text/css">
<!--
div.WebHelpPopupMenu { position:absolute; left:0px; top:0px; z-index:4; visibility:hidden; }
-->
</style><script type="text/javascript" language="javascript1.2" src="whmsg.js"></script>
<script type="text/javascript" language="javascript" src="whver.js"></script>
<script type="text/javascript" language="javascript1.2" src="whproxy.js"></script>
<script type="text/javascript" language="javascript1.2" src="whutils.js"></script>
<script type="text/javascript" language="javascript1.2" src="whtopic.js"></script>
</head>
<body><script type="text/javascript" language="javascript1.2">
<!--
if (window.gbWhTopic)
{
if (window.addTocInfo)
{
addTocInfo("MESH module\nTUI Scripts\nModifying Meshes");
addButton("show",BTN_TEXT,"Show","","","","",0,0,"","","");
}
if (window.writeBtnStyle)
writeBtnStyle();
if (window.writeIntopicBar)
writeIntopicBar(1);
if (window.setRelStartPage)
{
setRelStartPage("smesh.htm");
autoSync(1);
sendSyncInfo();
sendAveInfoOut();
}
}
else
if (window.gbIE4)
document.location.reload();
//-->
</script>
<h1>Modifying Meshes</h1>
<h3><a name=bookmark>Adding Nodes and Elements</a></h3>
<h4>Add Node</h4>
<p class="whs1">import SMESH</p>
<p class="whs1">import SMESH_mechanic</p>
<p class="whs1"> </p>
<p class="whs1">smesh =
SMESH_mechanic.smesh</p>
<p class="whs1">mesh =
SMESH_mechanic.mesh</p>
<p class="whs1">salome = SMESH_mechanic.salome</p>
<p class="whs2"> </p>
<p class="whs2"># add node</p>
<p class="whs1">aMeshEditor = mesh.GetMeshEditor()</p>
<p class="whs1">if aMeshEditor.AddNode(50,
10, 0) == 1:</p>
<p class="whs1"> print
"Node addition is OK!"</p>
<p class="whs1">else:</p>
<p class="whs1"> print
"KO node addition."</p>
<p class="whs1"> </p>
<p class="whs1">salome.sg.updateObjBrowser(1)
</p>
<p class="whs1"> </p>
<h4>Add Edge</h4>
<p class="whs1">import SMESH</p>
<p class="whs1">import SMESH_mechanic</p>
<p class="whs1"> </p>
<p class="whs1">smesh =
SMESH_mechanic.smesh</p>
<p class="whs1">mesh =
SMESH_mechanic.mesh</p>
<p class="whs1">salome = SMESH_mechanic.salome</p>
<p class="whs2"> </p>
<p class="whs2"># add node</p>
<p class="whs1">aMeshEditor = mesh.GetMeshEditor()</p>
<p class="whs1">if aMeshEditor.AddNode(50,
10, 0) == 1:</p>
<p class="whs1"> print
"Node addition is OK!"</p>
<p class="whs1">else:</p>
<p class="whs1"> print
"KO node addition."</p>
<p class="whs1"> </p>
<p class="whs2"># add edge</p>
<p class="whs1">LastNodeId = mesh.NbNodes()</p>
<p class="whs1">if aMeshEditor.AddEdge([LastNodeId,
38]) == 1:</p>
<p class="whs1"> print
"Edge addition is OK!"</p>
<p class="whs1">else:</p>
<p class="whs1"> print
"KO edge addition."</p>
<p class="whs1"> </p>
<p class="whs1">salome.sg.updateObjBrowser(1)
</p>
<p class="whs1"> </p>
<h4>Add Triangle</h4>
<p class="whs1">import SMESH</p>
<p class="whs1">import SMESH_mechanic</p>
<p class="whs1"> </p>
<p class="whs1">smesh =
SMESH_mechanic.smesh</p>
<p class="whs1">mesh =
SMESH_mechanic.mesh</p>
<p class="whs1">salome = SMESH_mechanic.salome</p>
<p class="whs1"> </p>
<p class="whs2"># add node</p>
<p class="whs1">aMeshEditor = mesh.GetMeshEditor()</p>
<p class="whs1">if aMeshEditor.AddNode(50,
10, 0) == 1:</p>
<p class="whs1"> print
"Node addition is OK!"</p>
<p class="whs1">else:</p>
<p class="whs1"> print
"KO node addition."</p>
<p class="whs1"> </p>
<p class="whs1">LastNodeId = mesh.NbNodes()</p>
<p class="whs2"> </p>
<p class="whs2"># add triangle</p>
<p class="whs1">if aMeshEditor.AddFace([LastNodeId,
38, 39]) == 1:</p>
<p class="whs1"> print
"Triangle addition is OK!"</p>
<p class="whs1">else:</p>
<p class="whs1"> print
"KO triangle addition."</p>
<p class="whs1"> </p>
<p class="whs1">salome.sg.updateObjBrowser(1)
</p>
<p class="whs1"> </p>
<h4>Add Quadrangle</h4>
<p class="whs1">import SMESH</p>
<p class="whs1">import SMESH_mechanic</p>
<p class="whs1"> </p>
<p class="whs1">smesh =
SMESH_mechanic.smesh</p>
<p class="whs1">mesh =
SMESH_mechanic.mesh</p>
<p class="whs1">salome = SMESH_mechanic.salome</p>
<p class="whs1"> </p>
<p class="whs2"># add node</p>
<p class="whs1">aMeshEditor = mesh.GetMeshEditor()</p>
<p class="whs1">if aMeshEditor.AddNode(50,
10, 0) == 1:</p>
<p class="whs1"> print
"Node addition is OK!"</p>
<p class="whs1">else:</p>
<p class="whs1"> print
"KO node addition."</p>
<p class="whs1"> </p>
<p class="whs1">LastNodeId = mesh.NbNodes()</p>
<p class="whs2"> </p>
<p class="whs2"># add quadrangle</p>
<p class="whs1">if aMeshEditor.AddNode(40,
20, 0) == 1:</p>
<p class="whs1"> print
"Node addition is OK!"</p>
<p class="whs1">else:</p>
<p class="whs1"> print
"KO node addition."</p>
<p class="whs1">if aMeshEditor.AddFace([mesh.NbNodes(),
LastNodeId, 38, 39]) == 1:</p>
<p class="whs1"> print
"Quadrangle addition is OK!"</p>
<p class="whs1">else:</p>
<p class="whs1"> print
"KO quadrangle addition."</p>
<p class="whs1"> </p>
<p class="whs2"><span style="font-family: 'Lucida Console', monospace;">salome.sg.updateObjBrowser(1)</span>
</p>
<p class="whs2"> </p>
<h4>Add Tetrahedron</h4>
<p class="whs1">import SMESH</p>
<p class="whs1">import SMESH_mechanic</p>
<p class="whs1"> </p>
<p class="whs1">smesh =
SMESH_mechanic.smesh</p>
<p class="whs1">mesh =
SMESH_mechanic.mesh</p>
<p class="whs1">salome = SMESH_mechanic.salome</p>
<p class="whs1"> </p>
<p class="whs2"># add node</p>
<p class="whs1">aMeshEditor = mesh.GetMeshEditor()</p>
<p class="whs1">if aMeshEditor.AddNode(50,
10, 0) == 1:</p>
<p class="whs1"> print
"Node addition is OK!"</p>
<p class="whs1">else:</p>
<p class="whs1"> print
"KO node addition."</p>
<p class="whs1"> </p>
<p class="whs1">LastNodeId = mesh.NbNodes()</p>
<p class="whs2"> </p>
<p class="whs2"># add tetrahedron</p>
<p class="whs1">if aMeshEditor.AddVolume([LastNodeId,
38, 39, 246]) == 1:</p>
<p class="whs1"> print
"Tetrahedron addition is OK!"</p>
<p class="whs1">else:</p>
<p class="whs1"> print
"KO tetrahedron addition."</p>
<p class="whs1"> </p>
<p class="whs2"><span style="font-family: 'Lucida Console', monospace;">salome.sg.updateObjBrowser(1)</span>
</p>
<p class="whs2"> </p>
<h4>Add Hexahedron</h4>
<p class="whs1">import SMESH</p>
<p class="whs1">import SMESH_mechanic</p>
<p class="whs1"> </p>
<p class="whs1">smesh =
SMESH_mechanic.smesh</p>
<p class="whs1">mesh =
SMESH_mechanic.mesh</p>
<p class="whs1">salome = SMESH_mechanic.salome</p>
<p class="whs1"> </p>
<p class="whs2"># add nodes</p>
<p class="whs1">aMeshEditor = mesh.GetMeshEditor()</p>
<p class="whs1">if aMeshEditor.AddNode(50,
10, 0) == 1:</p>
<p class="whs1"> print
"Node addition is OK!"</p>
<p class="whs1">else:</p>
<p class="whs1"> print
"KO node addition."</p>
<p class="whs1">aNodeId1 = mesh.NbNodes()</p>
<p class="whs1"> </p>
<p class="whs1">if aMeshEditor.AddNode(47,
12, 0) == 1:</p>
<p class="whs1"> print
"Node addition is OK!"</p>
<p class="whs1">else:</p>
<p class="whs1"> print
"KO node addition."</p>
<p class="whs1">aNodeId2 = mesh.NbNodes()</p>
<p class="whs1"> </p>
<p class="whs1">if aMeshEditor.AddNode(50,
10, 10) == 1:</p>
<p class="whs1"> print
"Node addition is OK!"</p>
<p class="whs1">else:</p>
<p class="whs1"> print
"KO node addition."</p>
<p class="whs1">aNodeId3 = mesh.NbNodes()</p>
<p class="whs1"> </p>
<p class="whs1">if aMeshEditor.AddNode(47,
12, 10) == 1:</p>
<p class="whs1"> print
"Node addition is OK!"</p>
<p class="whs1">else:</p>
<p class="whs1"> print
"KO node addition."</p>
<p class="whs1">aNodeId4 = mesh.NbNodes()</p>
<p class="whs1"> </p>
<p class="whs2"># add hexahedron</p>
<p class="whs1">if aMeshEditor.AddVolume([aNodeId2,
aNodeId1, 38, 39, aNodeId4, aNodeId3, 245, 246]) == 1:</p>
<p class="whs1"> print
"Hexahedron addition is OK!"</p>
<p class="whs1">else:</p>
<p class="whs1"> print
"KO Hexahedron addition."</p>
<p class="whs1"> </p>
<p class="whs2"><span style="font-family: 'Lucida Console', monospace;">salome.sg.updateObjBrowser(1)</span>
</p>
<p class="whs2"> </p>
<h4>Add Polygon</h4>
<p class="whs1">import salome</p>
<p class="whs1">import geompy</p>
<p class="whs1">import math</p>
<p class="whs1"> </p>
<p class="whs1">import StdMeshers</p>
<p class="whs1"> </p>
<p class="whs2"># GEOM module </p>
<p class="whs1">shape_mesh = geompy.MakeCylinderRH(13,
77)</p>
<p class="whs1">geompy.addToStudy(shape_mesh,
"cylinder")</p>
<p class="whs1"> </p>
<p class="whs2"># SMESH module</p>
<p class="whs1">smesh = salome.lcc.FindOrLoadComponent("FactoryServer",
"SMESH")</p>
<p class="whs1">smesh.SetCurrentStudy(salome.myStudy)</p>
<p class="whs1">mesh = smesh.CreateMesh(shape_mesh)</p>
<p class="whs1">MeshEditor = mesh.GetMeshEditor()</p>
<p class="whs1"> </p>
<p class="whs2"># a method to build a polygonal
mesh element with nb_vert angles:</p>
<p class="whs1">def MakePolygon
(a_mesh, x0, y0, z0, radius, nb_vert):</p>
<p class="whs1"> node_start_id
= a_mesh.NbNodes() + 1</p>
<p class="whs1"> al
= 2.0 * math.pi / nb_vert</p>
<p class="whs1"> node_ids
= []</p>
<p class="whs2"> </p>
<p class="whs2"># Create nodes for a polyhedron</p>
<p class="whs1"> for
ii in range(nb_vert):</p>
<p class="whs1"> MeshEditor.AddNode(x0
+ radius * math.cos(ii*al),</p>
<p class="whs1"> y0
+ radius * math.sin(ii*al),</p>
<p class="whs1"> z0)</p>
<p class="whs1"> node_ids.append(node_start_id
+ ii)</p>
<p class="whs1"> pass</p>
<p class="whs2"> </p>
<p class="whs2"># Create a polygon</p>
<p class="whs1"> MeshEditor.AddPolygonalFace(node_ids)</p>
<p class="whs1"> return
0</p>
<p class="whs1"> </p>
<p class="whs2"># Create three polygons</p>
<p class="whs1">MakePolygon(mesh,
0, 0, 0,
30, 13)</p>
<p class="whs1">MakePolygon(mesh,
0, 0, 10, 21, 9)</p>
<p class="whs1">MakePolygon(mesh,
0, 0, 20, 13, 6)</p>
<p class="whs1"> </p>
<p class="whs1">salome.sg.updateObjBrowser(1)
</p>
<p class="whs1"> </p>
<h4>Add polyhedron</h4>
<p class="whs1"><span style="font-family: 'Lucida Console', monospace;">import
salome</span></p>
<p class="whs1">import geompy</p>
<p class="whs1">import math</p>
<p class="whs1"> </p>
<p class="whs1">#import SMESH</p>
<p class="whs1">import StdMeshers</p>
<p class="whs1"> </p>
<p class="whs3"># GEOM</p>
<p class="whs1">shape_mesh = geompy.MakeCylinderRH(13,
77)</p>
<p class="whs1">geompy.addToStudy(shape_mesh,
"cylinder")</p>
<p class="whs1"> </p>
<p class="whs3"># SMESH</p>
<p class="whs1">smesh = salome.lcc.FindOrLoadComponent("FactoryServer",
"SMESH")</p>
<p class="whs1">smesh.SetCurrentStudy(salome.myStudy)</p>
<p class="whs1">mesh = smesh.CreateMesh(shape_mesh)</p>
<p class="whs1">MeshEditor = mesh.GetMeshEditor()</p>
<p class="whs1"> </p>
<p class="whs3"># Now we are going
to create a 12-hedron:</p>
<p class="whs3"> </p>
<p class="whs3"># Create nodes for
polyhedron</p>
<p class="whs1">al = 2 * math.pi
/ 5.0</p>
<p class="whs1">cosal = math.cos(al)</p>
<p class="whs1"> </p>
<p class="whs1">aa = 13</p>
<p class="whs1">rr = aa / (2.0 *
math.sin(al/2.0))</p>
<p class="whs1">dr = 2.0 * rr *
cosal</p>
<p class="whs1">r1 = rr + dr</p>
<p class="whs1">dh = rr * math.sqrt(2.0
* (1.0 - cosal * (1.0 + 2.0 * cosal)))</p>
<p class="whs1">hh = 2.0 * dh -
dr * (rr*(cosal - 1) + (rr + dr)*(math.cos(al/2) - 1)) / dh</p>
<p class="whs1"> </p>
<p class="whs1">for i in range(5):</p>
<p class="whs1"> MeshEditor.AddNode(rr*math.cos(i*al),
rr*math.sin(i*al), 0)
<span style="font-family: 'Times New Roman', serif;"># 1,3,5,7, 9 # bottom</span></p>
<p class="whs1"> MeshEditor.AddNode(r1*math.cos(i*al),
r1*math.sin(i*al), dh) <span style="font-family: 'Times New Roman', serif;">#
2,4,6,8,10 # above bottom</span></p>
<p class="whs1"> </p>
<p class="whs1">for i in range(5):</p>
<p class="whs1"> MeshEditor.AddNode(rr*math.cos(i*al
+ al/2.0),</p>
<p class="whs1"> rr*math.sin(i*al
+ al/2.0), hh) # 11,13,15,17,19 <span style="font-family: 'Times New Roman', serif;">#
top</span></p>
<p class="whs1"> MeshEditor.AddNode(r1*math.cos(i*al
+ al/2.0),</p>
<p class="whs1"> r1*math.sin(i*al
+ al/2.0), hh - dh) # 12,14,16,18,20 <span style="font-family: 'Times New Roman', serif;">#
below top</span></p>
<p class="whs1"> </p>
<p class="whs3"># Create a polyhedral
volume</p>
<p class="whs1">MeshEditor.AddPolyhedralVolume([
1, 3, 5,
7, 9,
<span style="font-family: 'Times New Roman', serif;">#
bottom</span></p>
<p class="whs1"> 1,
2, 12,
4, 3,
<span style="font-family: 'Times New Roman', serif;">#
.</span></p>
<p class="whs1"> 3,
4, 14,
6, 5,
<span style="font-family: 'Times New Roman', serif;">#
.</span></p>
<p class="whs1"> 5,
6, 16,
8, 7,
<span style="font-family: 'Times New Roman', serif;">#
. above bottom</span></p>
<p class="whs1"> 7,
8, 18,
10, 9,
<span style="font-family: 'Times New Roman', serif;">#
.</span></p>
<p class="whs1"> 9,
10, 20, 2,
1, <span
style="font-family: 'Times New Roman', serif;">#
.</span></p>
<p class="whs1"> 11,
12, 4,
14, 13, <span style="font-family: 'Times New Roman', serif;">#
-</span></p>
<p class="whs1"> 13,
14, 6,
16, 15, <span style="font-family: 'Times New Roman', serif;">#
-</span></p>
<p class="whs1"> 15,
16, 8,
18, 17, <span style="font-family: 'Times New Roman', serif;">#
- below top</span></p>
<p class="whs1"> 17,
18, 10, 20, 19, <span style="font-family: 'Times New Roman', serif;">#
-</span></p>
<p class="whs1"> 19,
20, 2,
12, 11, <span style="font-family: 'Times New Roman', serif;">#
-</span></p>
<p class="whs1"> 11,
13, 15, 17, 19], <span style="font-family: 'Times New Roman', serif;">#
top</span></p>
<p class="whs1"> [5,5,5,5,5,5,5,5,5,5,5,5])</p>
<p class="whs1"> </p>
<p class="whs1">salome.sg.updateObjBrowser(1)
</p>
<p class="whs1"> </p>
<h3><a name=bookmark1>Removing Nodes and Elements</a></h3>
<h4 class="whs4">Removing Nodes</h4>
<p class="whs2"> </p>
<p class="whs1">import SMESH</p>
<p class="whs1">import SMESH_mechanic</p>
<p class="whs1"> </p>
<p class="whs1">smesh =
SMESH_mechanic.smesh</p>
<p class="whs1">mesh =
SMESH_mechanic.mesh</p>
<p class="whs1">salome = SMESH_mechanic.salome</p>
<p class="whs2"> </p>
<p class="whs2"># add node</p>
<p class="whs1">aMeshEditor = mesh.GetMeshEditor()</p>
<p class="whs1">if aMeshEditor.RemoveNodes([246,
255]) == 1:</p>
<p class="whs1"> print
"Node removing is OK!"</p>
<p class="whs1">else:</p>
<p class="whs1"> print
"KO node removing."</p>
<p class="whs1"> </p>
<p class="whs2"><span style="font-family: 'Lucida Console', monospace;">salome.sg.updateObjBrowser(1)</span>
</p>
<p class="whs2"> </p>
<h4>Removing Elements</h4>
<p class="whs1">import SMESH</p>
<p class="whs1">import SMESH_mechanic</p>
<p class="whs1"> </p>
<p class="whs1">smesh =
SMESH_mechanic.smesh</p>
<p class="whs1">mesh =
SMESH_mechanic.mesh</p>
<p class="whs1">salome = SMESH_mechanic.salome</p>
<p class="whs1"> </p>
<p class="whs1">anEditor = mesh.GetMeshEditor()</p>
<p class="whs1">anEditor.RemoveElements([850,
859, 814])</p>
<p class="whs1"> </p>
<p class="whs1">salome.sg.updateObjBrowser(1)
</p>
<p class="whs1"> </p>
<h3><a name=bookmark2>Renumbering Nodes and Elements</a></h3>
<p class="whs5">import SMESH</p>
<p class="whs5">import SMESH_mechanic</p>
<p class="whs5"> </p>
<p class="whs5">mesh =
SMESH_mechanic.mesh</p>
<p class="whs5">salome = SMESH_mechanic.salome</p>
<p class="whs5"> </p>
<p class="whs5">anEditor = mesh.GetMeshEditor()</p>
<p class="whs5">anEditor.RenumberNodes()</p>
<p class="whs5"> </p>
<p class="whs6"><span style="font-family: 'Lucida Console', monospace;">salome.sg.updateObjBrowser(1)</span>
</p>
<p class="whs6"> </p>
<p> </p>
<h3><a name=bookmark3>Moving Nodes</a></h3>
<p class="whs1">import SMESH</p>
<p class="whs1">import SMESH_mechanic</p>
<p class="whs1"> </p>
<p class="whs1">smesh =
SMESH_mechanic.smesh</p>
<p class="whs1">mesh =
SMESH_mechanic.mesh</p>
<p class="whs1">salome = SMESH_mechanic.salome</p>
<p class="whs1"> </p>
<p class="whs2"># move node</p>
<p class="whs1">aMeshEditor = mesh.GetMeshEditor()</p>
<p class="whs1">aMeshEditor.MoveNode(38,
20, 10, 0)</p>
<p class="whs1"> </p>
<p class="whs2"><span style="font-family: 'Lucida Console', monospace;">salome.sg.updateObjBrowser(1)</span>
</p>
<p class="whs2"> </p>
<h3><a name=bookmark4>Diagonal Inversion</a></h3>
<p class="whs1">import SMESH</p>
<p class="whs1">import SMESH_mechanic</p>
<p class="whs1"> </p>
<p class="whs1">smesh =
SMESH_mechanic.smesh</p>
<p class="whs1">mesh =
SMESH_mechanic.mesh</p>
<p class="whs1">salome = SMESH_mechanic.salome</p>
<p class="whs1"> </p>
<p class="whs2"># inverse diagonal</p>
<p class="whs1">aMeshEditor = mesh.GetMeshEditor()</p>
<p class="whs1">aMeshEditor.InverseDiag(700,
642)</p>
<p class="whs1"> </p>
<p class="whs2"><span style="font-family: 'Lucida Console', monospace;">salome.sg.updateObjBrowser(1)</span>
</p>
<p class="whs2"> </p>
<h3><a name=bookmark5>Uniting two Triangles</a></h3>
<p class="whs7">import SMESH</p>
<p class="whs7">import SMESH_mechanic</p>
<p class="whs7"> </p>
<p class="whs7">smesh =
SMESH_mechanic.smesh</p>
<p class="whs7">mesh =
SMESH_mechanic.mesh</p>
<p class="whs7">salome = SMESH_mechanic.salome</p>
<p class="whs7"> </p>
<p># delete diagonal</p>
<p class="whs7">aMeshEditor = mesh.GetMeshEditor()</p>
<p class="whs7">aMeshEditor.DeleteDiag(700,
642)</p>
<p class="whs7"> </p>
<p><span style="font-family: 'Lucida Console', monospace;">salome.sg.updateObjBrowser(1)</span>
</p>
<p> </p>
<h3><a name=bookmark6>Uniting a Set of Triangles</a></h3>
<p class="whs7">import SMESH</p>
<p class="whs7">import SMESH_mechanic</p>
<p class="whs7"> </p>
<p class="whs7">smesh =
SMESH_mechanic.smesh</p>
<p class="whs7">mesh =
SMESH_mechanic.mesh</p>
<p class="whs7">salome = SMESH_mechanic.salome</p>
<p class="whs7"> </p>
<p># unite a set of triangles</p>
<p class="whs7">aFilterMgr = smesh.CreateFilterManager()</p>
<p class="whs7">aFunctor = aFilterMgr.CreateMinimumAngle()</p>
<p class="whs7"> </p>
<p class="whs7">aMeshEditor = mesh.GetMeshEditor()</p>
<p class="whs7">aMeshEditor.TriToQuad([1145,
1147, 1159, 1135], aFunctor, 60)</p>
<p class="whs7"> </p>
<p class="whs7">salome.sg.updateObjBrowser(1)
</p>
<p class="whs7"> </p>
<h3><a name=bookmark12>Orientation</a></h3>
<p class="whs7"><span style="font-family: 'Lucida Console', monospace;">import
salome</span></p>
<p class="whs7">import geompy</p>
<p class="whs7"> </p>
<p class="whs7">import StdMeshers</p>
<p class="whs7"> </p>
<p class="whs8"># GEOM module</p>
<p class="whs7">shape_mesh = geompy.MakeCylinderRH(13,
77)</p>
<p class="whs7">geompy.addToStudy(shape_mesh,
"cylinder")</p>
<p class="whs7"> </p>
<p class="whs8"># SMESH module</p>
<p class="whs7">smesh = salome.lcc.FindOrLoadComponent("FactoryServer",
"SMESH")</p>
<p class="whs7">smesh.SetCurrentStudy(salome.myStudy)</p>
<p class="whs7">mesh = smesh.CreateMesh(shape_mesh)</p>
<p class="whs7">MeshEditor = mesh.GetMeshEditor()</p>
<p class="whs7"> </p>
<p class="whs8"># build five quadrangles:</p>
<p class="whs7">node_start_id = mesh.NbNodes()
+ 1</p>
<p class="whs7">dx = 10</p>
<p class="whs7">dy = 20</p>
<p class="whs7"> </p>
<p class="whs7">MeshEditor.AddNode(0.0
* dx, 0, 0) # 1</p>
<p class="whs7">MeshEditor.AddNode(1.0
* dx, 0, 0) # 2</p>
<p class="whs7">MeshEditor.AddNode(2.0
* dx, 0, 0) # 3</p>
<p class="whs7">MeshEditor.AddNode(3.0
* dx, 0, 0) # 4</p>
<p class="whs7">MeshEditor.AddNode(4.0
* dx, 0, 0) # 5</p>
<p class="whs7">MeshEditor.AddNode(5.0
* dx, 0, 0) # 6</p>
<p class="whs7"> </p>
<p class="whs7">MeshEditor.AddNode(0.0
* dx, dy, 0) # 7</p>
<p class="whs7">MeshEditor.AddNode(1.0
* dx, dy, 0) # 8</p>
<p class="whs7">MeshEditor.AddNode(2.0
* dx, dy, 0) # 9</p>
<p class="whs7">MeshEditor.AddNode(3.0
* dx, dy, 0) # 10</p>
<p class="whs7">MeshEditor.AddNode(4.0
* dx, dy, 0) # 11</p>
<p class="whs7">MeshEditor.AddNode(5.0
* dx, dy, 0) # 12</p>
<p class="whs7"> </p>
<p class="whs7">MeshEditor.AddFace([1,
2, 8, 7])</p>
<p class="whs7">MeshEditor.AddFace([2,
3, 9, 8])</p>
<p class="whs7">MeshEditor.AddFace([3,
4, 10, 9])</p>
<p class="whs7">MeshEditor.AddFace([4,
5, 11, 10])</p>
<p class="whs7">MeshEditor.AddFace([5,
6, 12, 11])</p>
<p class="whs7"> </p>
<p class="whs8"># Change orientation
of the second and the fourth faces.</p>
<p class="whs7">MeshEditor.Reorient([2,
4])</p>
<p class="whs7"> </p>
<p class="whs7">salome.sg.updateObjBrowser(1)
</p>
<p class="whs7"> </p>
<h3><a name=bookmark7>Cutting Quadrangles</a></h3>
<p class="whs7">import SMESH</p>
<p class="whs7">import SMESH_mechanic</p>
<p class="whs7"> </p>
<p class="whs7">smesh =
SMESH_mechanic.smesh</p>
<p class="whs7">mesh =
SMESH_mechanic.mesh</p>
<p class="whs7">salome = SMESH_mechanic.salome</p>
<p class="whs7"> </p>
<p class="whs8"># unite a set of triangles</p>
<p class="whs7">aFilterMgr = smesh.CreateFilterManager()</p>
<p class="whs7">aFunctor = aFilterMgr.CreateMinimumAngle()</p>
<p class="whs7"> </p>
<p class="whs7">aMeshEditor = mesh.GetMeshEditor()</p>
<p class="whs7">aMeshEditor.QuadToTri([405,
406], aFunctor)</p>
<p class="whs7"> </p>
<p class="whs7">salome.sg.updateObjBrowser(1)
</p>
<p class="whs8"> </p>
<h3><a name=bookmark8>Smoothing</a></h3>
<p class="whs7">import SMESH</p>
<p class="whs7">import SMESH_mechanic</p>
<p class="whs7"> </p>
<p class="whs7">smesh =
SMESH_mechanic.smesh</p>
<p class="whs7">mesh =
SMESH_mechanic.mesh</p>
<p class="whs7">salome = SMESH_mechanic.salome</p>
<p class="whs7"> </p>
<p class="whs8"># smooth</p>
<p class="whs7">FacesSmooth = [911,
931, 950, 864, 932]</p>
<p class="whs7">GroupSmooth = mesh.CreateGroup(SMESH.FACE,"Group
of faces (smooth)")</p>
<p class="whs7">GroupSmooth.Add(FacesSmooth)</p>
<p class="whs7"> </p>
<p class="whs7">aMeshEditor = mesh.GetMeshEditor()</p>
<p class="whs7">aMeshEditor.SmoothObject(GroupSmooth,
[], 20, 2, SMESH.SMESH_MeshEditor.CENTROIDAL_SMOOTH)</p>
<p class="whs7"> </p>
<p class="whs7">salome.sg.updateObjBrowser(1)
</p>
<p class="whs7"> </p>
<p class="whs7"> </p>
<h3><a name=bookmark9>Extrusion</a></h3>
<p class="whs8">import SMESH</p>
<p class="whs8">import SMESH_mechanic</p>
<p class="whs8"> </p>
<p class="whs8">smesh =
SMESH_mechanic.smesh</p>
<p class="whs8">mesh =
SMESH_mechanic.mesh</p>
<p class="whs8">salome = SMESH_mechanic.salome</p>
<p class="whs7"> </p>
<p class="whs8"># extrusion of the group</p>
<p class="whs8">point = SMESH.PointStruct(0,
0, 5)</p>
<p class="whs8">vector = SMESH.DirStruct(point)</p>
<p class="whs8">FacesTriToQuad = [2381,
2382, 2383, 2384, 2385, 2386, 2387, 2388, 2389, 2390, 2391, 2392, 2393,
2394, 2395, 2396, 2397, 2398, 2399, 2400, 2401, 2402, 2403, 2404, 2405,
2406, 2407, 2408, 2409, 2410, 2411, 2412, 2413, 2414, 2415, 2416, 2417,
2418, 2419, 2420, 2421, 2422]</p>
<p class="whs8"> </p>
<p class="whs8">GroupTriToQuad = mesh.CreateGroup(SMESH.FACE,"Group
of faces (quad)")</p>
<p class="whs8">GroupTriToQuad.Add(FacesTriToQuad)</p>
<p class="whs8"> </p>
<p class="whs8">aMeshEditor = mesh.GetMeshEditor()</p>
<p class="whs8">aMeshEditor.ExtrusionSweepObject(GroupTriToQuad,
vector, 5)</p>
<p class="whs8"> </p>
<p class="whs8">salome.sg.updateObjBrowser(1)
</p>
<p class="whs8"> </p>
<h3><a name=bookmark10>Extrusion along a Path</a></h3>
<p class="whs7">import geompy</p>
<p class="whs7">import smesh</p>
<p class="whs7">import salome</p>
<p class="whs7">import SMESH</p>
<p class="whs7"> </p>
<p class="whs8"># create a face to be
meshed</p>
<p class="whs7">px = geompy.MakeVertex(100.,
0. , 0.
)</p>
<p class="whs7">py = geompy.MakeVertex(0.
, 100.,
0. )</p>
<p class="whs7">pz = geompy.MakeVertex(0.
, 0. ,
100.)</p>
<p class="whs7"> </p>
<p class="whs7">vxy = geompy.MakeVector(px,
py)</p>
<p class="whs7">arc = geompy.MakeArc(py,
pz, px)</p>
<p class="whs7"> </p>
<p class="whs7">wire = geompy.MakeWire([vxy,
arc])</p>
<p class="whs7">isPlanarFace = 1</p>
<p class="whs7"> </p>
<p class="whs7">face1 = geompy.MakeFace(wire,
isPlanarFace)</p>
<p class="whs7">id_face1 = geompy.addToStudy(face1,
"Face1")</p>
<p class="whs7"> </p>
<p class="whs8"># create a 2D mesh on
the face</p>
<p class="whs7">trias = smesh.Mesh(face1,
"Face : 2D mesh")</p>
<p class="whs7"> </p>
<p class="whs7">algo = trias.Segment()</p>
<p class="whs7">algo.NumberOfSegments(6)</p>
<p class="whs7"> </p>
<p class="whs7">algo = trias.Triangle()</p>
<p class="whs7">algo.LengthFromEdges()</p>
<p class="whs7"> </p>
<p class="whs7">trias.Compute()</p>
<p class="whs7"> </p>
<p class="whs8"># create a path mesh</p>
<p class="whs7">px1 = geompy.MakeVertex(100.,
100. ,
0. )</p>
<p class="whs7">py1 = geompy.MakeVertex(-100.
, -100.,
0. )</p>
<p class="whs7">pz1 = geompy.MakeVertex(0.
, 0. ,
50.)</p>
<p class="whs7"> </p>
<p class="whs7">circle = geompy.MakeCircleThreePnt(py1,
pz1, px1)</p>
<p class="whs7">id_circle = geompy.addToStudy(circle,
"Path")</p>
<p class="whs7"> </p>
<p class="whs7">circlemesh = smesh.Mesh(circle,
"Path mesh")</p>
<p class="whs7"> </p>
<p class="whs7">algo = circlemesh.Segment()</p>
<p class="whs7">algo.NumberOfSegments(10)</p>
<p class="whs7"> </p>
<p class="whs7">circlemesh.Compute()</p>
<p class="whs7"> </p>
<p class="whs8"># extrusion of the mesh</p>
<p class="whs8"># The mesh "trias"
will be extruded along another mesh, which is a sub-mesh of "circlemesh",</p>
<p class="whs8"><span style="font-family: 'Times New Roman', serif;">#
corresponding to geometry "circle". In this particular case
the path mesh will be the whole "circlemesh"</span></p>
<p class="whs8"> </p>
<p class="whs7">aMeshEditor = trias.GetMesh().GetMeshEditor()</p>
<p class="whs7">aMeshEditor.ExtrusionAlongPathObject(trias.GetMesh(),
circlemesh.GetMesh(), circle, 1, 0, [], 0, SMESH.PointStruct(0, 0, 0))</p>
<p class="whs7"> </p>
<p class="whs8"><span style="font-family: 'Lucida Console', monospace;">salome.sg.updateObjBrowser(1)</span>
</p>
<h3><a name=bookmark11>Revolution</a></h3>
<p class="whs7">import SMESH</p>
<p class="whs7">import SMESH_mechanic</p>
<p class="whs7">import math</p>
<p class="whs7"> </p>
<p class="whs7">smesh =
SMESH_mechanic.smesh</p>
<p class="whs7">mesh =
SMESH_mechanic.mesh</p>
<p class="whs7">salome = SMESH_mechanic.salome</p>
<p class="whs8"> </p>
<p class="whs8"># rotate a sweep object</p>
<p class="whs7">FacesRotate = [492,
493, 502, 503]</p>
<p class="whs7">GroupRotate = mesh.CreateGroup(SMESH.FACE,"Group
of faces (rotate)")</p>
<p class="whs7">GroupRotate.Add(FacesRotate)</p>
<p class="whs7">angle45 = 45*math.pi/180</p>
<p class="whs7">axisXYZ = SMESH.AxisStruct(-38.3128,
-73.3658, -23.321, -13.3402, -13.3265, 6.66632)</p>
<p class="whs7"> </p>
<p class="whs7">aMeshEditor = mesh.GetMeshEditor()</p>
<p class="whs7">aMeshEditor.RotationSweepObject(GroupRotate,
axisXYZ, angle45, 4, 1e-5)</p>
<p class="whs7"> </p>
<p class="whs8"><span style="font-family: 'Lucida Console', monospace;">salome.sg.updateObjBrowser(1)</span>
</p>
<p class="whs8"> </p>
<h3><a name=bookmark13>Pattern Mapping</a></h3>
<p class="whs7">import salome</p>
<p class="whs7">import geompy</p>
<p class="whs7">import SMESH, smesh</p>
<p class="whs7"> </p>
<p class="whs7">geompy.init_geom(salome.myStudy)</p>
<p class="whs7">smesh.smesh.SetCurrentStudy(salome.myStudy)</p>
<p class="whs7"> </p>
<p class="whs8"># define geometry</p>
<p class="whs7">Box_1 = geompy.MakeBoxDXDYDZ(200,
200, 200)</p>
<p class="whs7">geompy.addToStudy(Box_1,
"Box_1")</p>
<p class="whs7"> </p>
<p class="whs7">faces = geompy.SubShapeAll(Box_1,
geompy.ShapeType["FACE"])</p>
<p class="whs7">Face_1 = faces[0]</p>
<p class="whs7">Face_2 = faces[1]</p>
<p class="whs7">geompy.addToStudyInFather(Box_1,
Face_1, "Face_1")</p>
<p class="whs7">geompy.addToStudyInFather(Box_1,
Face_2, "Face_2")</p>
<p class="whs7"> </p>
<p class="whs8"># build quadrangle mesh
3x3 on Face_1</p>
<p class="whs7">Mesh_1 = smesh.Mesh(Face_1)</p>
<p class="whs7">Wire_discretisation
= Mesh_1.Segment()</p>
<p class="whs7">Wire_discretisation.NumberOfSegments(3)</p>
<p class="whs7">Mesh_1.Quadrangle()</p>
<p class="whs7"> </p>
<p class="whs7">isDone = Mesh_1.Compute()</p>
<p class="whs7">if not isDone: print
'Mesh Mesh_1 : computation failed'</p>
<p class="whs7"> </p>
<p class="whs8"># pattern the mesh</p>
<p class="whs7">Mesh_2 = smesh.Mesh(Face_2)</p>
<p class="whs7">Nb_Segments_1 = smesh.smesh.CreateHypothesis('NumberOfSegments',
'libStdMeshersEngine.so')</p>
<p class="whs7">Nb_Segments_1.SetNumberOfSegments(1)</p>
<p class="whs7">status = Mesh_2.GetMesh().AddHypothesis(Face_2,
Nb_Segments_1)</p>
<p class="whs7">status = Mesh_2.GetMesh().AddHypothesis(Face_2,
Wire_discretisation.GetAlgorithm())</p>
<p class="whs7">Triangle_Mefisto =
Mesh_2.Triangle()</p>
<p class="whs7">Max_Element_Area =
Triangle_Mefisto.MaxElementArea(240)</p>
<p class="whs7"> </p>
<p class="whs7">isDone = Mesh_2.Compute()</p>
<p class="whs7">if not isDone: print
'Mesh Mesh_2 : computation failed'</p>
<p class="whs7"> </p>
<p class="whs8"># create a pattern</p>
<p class="whs7">pattern = smesh.smesh.GetPattern()</p>
<p class="whs7">isDone = pattern.LoadFromFace(Mesh_2.GetMesh(),
Face_2, 0)</p>
<p class="whs7">if (isDone != 1):</p>
<p class="whs9">print
'LoadFromFace :', pattern.GetErrorCode()</p>
<p class="whs7"> </p>
<p class="whs8"># apply the pattern to
a face of the first mesh</p>
<p class="whs7">pattern.ApplyToMeshFaces(Mesh_1.GetMesh(),
[17], 0, 0)</p>
<p class="whs7">isDone = pattern.MakeMesh(Mesh_1.GetMesh(),
0, 0)</p>
<p class="whs7">if (isDone != 1):</p>
<p class="whs9">print
'MakeMesh :', pattern.GetErrorCode()</p>
<p class="whs7"> </p>
<p class="whs8"><span style="font-family: 'Lucida Console', monospace;">salome.sg.updateObjBrowser(1)</span>
</p>
<script type="text/javascript" language="javascript1.2">
<!--
if (window.writeIntopicBar)
writeIntopicBar(0);
//-->
</script>
</body>
</html>