mirror of
https://git.salome-platform.org/gitpub/modules/smesh.git
synced 2024-12-27 01:40:33 +05:00
192 lines
7.3 KiB
HTML
Executable File
192 lines
7.3 KiB
HTML
Executable File
<!doctype HTML public "-//W3C//DTD HTML 4.0 Frameset//EN">
|
|
|
|
<html>
|
|
|
|
<head>
|
|
<title>Extrusion along a path</title>
|
|
<meta http-equiv="content-type" content="text/html; charset=windows-1252">
|
|
<meta name="generator" content="RoboHelp by eHelp Corporation www.ehelp.com">
|
|
<link rel="stylesheet" href="default_ns.css"><script type="text/javascript" language="JavaScript" title="WebHelpSplitCss">
|
|
<!--
|
|
if (navigator.appName !="Netscape")
|
|
{ document.write("<link rel='stylesheet' href='default.css'>");}
|
|
//-->
|
|
</script>
|
|
<style type="text/css">
|
|
<!--
|
|
table.whs1 { x-cell-content-align:top; width:100%; border-spacing:0px; }
|
|
col.whs2 { width:50%; }
|
|
tr.whs3 { x-cell-content-align:top; }
|
|
td.whs4 { width:50%; padding-right:10px; padding-left:10px; border-right-style:none; border-left-style:none; border-top-style:none; border-bottom-style:none; }
|
|
img_whs5 { border:none; width:335px; height:323px; border-style:none; }
|
|
td.whs6 { width:50%; padding-right:10px; padding-left:10px; border-top-style:none; border-bottom-style:none; border-right-style:none; }
|
|
img_whs7 { border:none; width:350px; height:323px; border-style:none; }
|
|
p.whs8 { margin-left:40px; }
|
|
img_whs9 { border:none; width:27px; height:24px; border-style:none; }
|
|
img_whs10 { border:none; width:434px; height:541px; border-style:none; float:none; }
|
|
ul.whs11 { list-style:disc; }
|
|
p.whs12 { margin-left:84px; }
|
|
img_whs13 { border:none; width:26px; height:25px; border-style:none; }
|
|
img_whs14 { border:none; width:29px; height:28px; border-style:none; }
|
|
-->
|
|
</style><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\nModifying meshes\nExtrusion along a path");
|
|
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>Extrusion along a path</h1>
|
|
|
|
<p>In principle, Extrusion along a path works in the same way as Extrusion,
|
|
the main difference is that we define not a vector, but a path of extrusion
|
|
which must be a meshed edge or wire. To get an idea of how this algorithm
|
|
works, let's see the left image, where we have a 1D circle edge and a
|
|
2D hexagon to be extruded along this path (in the picture they are angular
|
|
because we show the wireframe of the mesh). And now let's see the right
|
|
image, showing the result of the operation. </p>
|
|
|
|
<p> </p>
|
|
|
|
<table x-use-null-cells cellspacing="0" width="100%" class="whs1">
|
|
<col class="whs2">
|
|
<col class="whs2">
|
|
|
|
<tr valign="top" class="whs3">
|
|
<td width="50%" class="whs4">
|
|
<p><img src="image102.gif" width="335px" height="323px" border="0" class="img_whs5"></td>
|
|
<td width="50%" class="whs6">
|
|
<p><img src="image104.gif" width="350px" height="323px" border="0" class="img_whs7"></td></tr>
|
|
</table>
|
|
|
|
<p> </p>
|
|
|
|
<p> </p>
|
|
|
|
<p> </p>
|
|
|
|
<p class=TODO>To use Extrusion along a path:</p>
|
|
|
|
<p class="whs8">1. From the <span style="font-weight: bold;"><B>Modification
|
|
</B></span>menu choose the <span style="font-weight: bold;"><B>Extrusion along
|
|
a path </B></span>item or click <img src="image101.gif" width="27px" height="24px" border="0" class="img_whs9"> button in the toolbar. The
|
|
following dialog box will appear:</p>
|
|
|
|
<p class="whs8"> </p>
|
|
|
|
<p class=TODO><img src="pics/a-extusionalongapath2.png" x-maintain-ratio="TRUE" width="434px" height="541px" border="0" class="img_whs10"></p>
|
|
|
|
<p class="whs8"> </p>
|
|
|
|
<p class="whs8">2. In the dialog box you should </p>
|
|
|
|
<ul type="disc" class="whs11">
|
|
|
|
<li class=kadov-p><p class="whs12">select the type of
|
|
elements which will be extruded (1D or 2D),</p></li>
|
|
|
|
<li class=kadov-p><p class="whs12">specify the IDs of
|
|
the elements which will be extruded by selecting them in the 3D viewer
|
|
or <span style="font-weight: bold;"><B>Select the whole mesh, submesh or
|
|
grou</B></span>p,</p></li>
|
|
|
|
<li class=kadov-p><p class="whs12">specify the path along
|
|
which the elements will be extruded, for this you should specify the <span
|
|
style="font-weight: bold;"><B>Mesh</B></span>, the <span style="font-weight: bold;"><B>Shape</B></span>,
|
|
and the <span style="font-weight: bold;"><B>Start point</B></span> for the extrusion.
|
|
</p></li>
|
|
</ul>
|
|
|
|
<p class="whs8"> </p>
|
|
|
|
<p class="whs8">3. There are two optional parameters, which
|
|
can be very useful.</p>
|
|
|
|
<ul type="disc" class="whs11">
|
|
|
|
<li class=kadov-p><p class="whs12">If the path of extrusion
|
|
is curvilinear, at each iteration the extruded shape is rotated to keep
|
|
its initial angularity to the curve. By default, the <span style="font-weight: bold;"><B>Base
|
|
point</B></span> around which the shape is rotated is the mass center of the
|
|
shape, however, you can specify any point as the <span style="font-weight: bold;"><B>Base
|
|
Point</B></span> and the shape will be rotated with respect to this point.</p></li>
|
|
|
|
<li class=kadov-p><p class="whs12">The shape can also
|
|
be rotated around the path to get the resulting mesh in a helical fashion.
|
|
At the picture above we see both "oblique-angled" and "right-angled"
|
|
mesh elements because <span style="font-weight: bold;"><B>Rotation Angles</B></span>
|
|
have not been set for all iterations. You set the values of the angles
|
|
at the right and add them to the list of angles at the left by pressing
|
|
the <img src="image105.gif" width="26px" height="25px" border="0" class="img_whs13"> button and remove the values from the list by pressing
|
|
the <img src="image106.gif" width="29px" height="28px" border="0" class="img_whs14"> button. </p></li>
|
|
</ul>
|
|
|
|
<p class="whs8">4. Click the <span style="font-weight: bold;"><B>Apply
|
|
</B></span>or <span style="font-weight: bold;"><B>OK </B></span>button.</p>
|
|
|
|
<p class="whs8"> </p>
|
|
|
|
<p> <span style="font-weight: bold;"><B>See
|
|
Also</B></span> a sample TUI Script of an <a href="modifying_meshes.htm#bookmark10">Extrusion
|
|
along a Path</a> operation. </p>
|
|
|
|
<p> </p>
|
|
|
|
<p> </p>
|
|
|
|
<script type="text/javascript" language="javascript1.2">
|
|
<!--
|
|
if (window.writeIntopicBar)
|
|
writeIntopicBar(0);
|
|
//-->
|
|
</script>
|
|
</body>
|
|
</html>
|