mirror of
https://git.salome-platform.org/gitpub/modules/smesh.git
synced 2024-12-28 18:30:35 +05:00
186 lines
6.1 KiB
HTML
Executable File
186 lines
6.1 KiB
HTML
Executable File
<!doctype HTML public "-//W3C//DTD HTML 4.0 Frameset//EN">
|
||
|
||
<html>
|
||
|
||
<!--(==============================================================)-->
|
||
<!--(Document created with RoboEditor. )============================-->
|
||
<!--(==============================================================)-->
|
||
|
||
<head>
|
||
|
||
<title>Aspect Ratio</title>
|
||
|
||
<!--(Meta)==========================================================-->
|
||
|
||
<meta http-equiv=content-type content="text/html; charset=windows-1252">
|
||
<meta name=generator content="RoboHELP by eHelp Corporation - www.ehelp.com">
|
||
<meta name=generator-major-version content=0.1>
|
||
<meta name=generator-minor-version content=1>
|
||
<meta name=filetype content=kadov>
|
||
<meta name=filetype-version content=1>
|
||
<meta name=page-count content=1>
|
||
<meta name=layout-height content=1101>
|
||
<meta name=layout-width content=700>
|
||
|
||
|
||
<!--(Links)=========================================================-->
|
||
|
||
<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">
|
||
<!--
|
||
img_whs1 {border-style: none; border: none; width: 30px; height: 30px; float: none;}
|
||
ul.whs2 {list-style: disc;}
|
||
p.whs3 {margin-left: 80px;}
|
||
img_whs4 {border-style: none; border: none; width: 238px; height: 205px;}
|
||
p.whs5 {margin-left: 0px;}
|
||
img_whs6 {border-style: none; border: none; width: 226px; height: 70px;}
|
||
p.whs7 {margin-left: 40px;}
|
||
img_whs8 {border-style: none; border: none; width: 25px; height: 24px;}
|
||
img_whs9 {border-style: none; border: none; width: 467px; height: 327px;}
|
||
-->
|
||
</style>
|
||
<script type="text/javascript" language="JavaScript">
|
||
<!--
|
||
if ((navigator.appName == "Netscape") && (parseInt(navigator.appVersion) == 4))
|
||
{
|
||
var strNSS = "<style type='text/css'>";
|
||
strNSS += "p.whs5 {margin-left:1; }";
|
||
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)==========================================================-->
|
||
|
||
|
||
<body>
|
||
|
||
<script type="text/javascript" language="javascript1.2">
|
||
<!--
|
||
if (window.gbWhTopic)
|
||
{
|
||
if (window.addTocInfo)
|
||
{
|
||
addTocInfo("SMESH module\nQuality controls\nAspect Ratio");
|
||
addButton("show",BTN_TEXT,"Show","","","","",0,0,"","","");
|
||
|
||
}
|
||
if (window.writeBtnStyle)
|
||
writeBtnStyle();
|
||
|
||
if (window.writeIntopicBar)
|
||
writeIntopicBar(1);
|
||
|
||
if (window.setRelStartPage)
|
||
{
|
||
setRelStartPage("../smesh.htm");
|
||
|
||
autoSync(0);
|
||
sendSyncInfo();
|
||
sendAveInfoOut();
|
||
}
|
||
}
|
||
else
|
||
document.location.reload();
|
||
//-->
|
||
</script>
|
||
<h1>Aspect Ratio</h1>
|
||
|
||
<p><img src="../i_blue.jpg" x-maintain-ratio="TRUE" width="30px" height="30px" border="0" class="img_whs1"> The <span style="font-weight: bold;"><B>Aspect Ratio</B></span>
|
||
quality criterion for mesh elements is defined as follows:</p>
|
||
|
||
<p> </p>
|
||
|
||
<ul type="disc" class="whs2">
|
||
|
||
<li class=kadov-p><p>For a <span style="font-weight: bold;"><B>triangle</B></span>
|
||
2D element consisting of 3 nodes a the <span style="font-weight: bold;"><B>Aspect
|
||
Ratio</B></span> is calculated as the ratio of the length, h2, of the edge
|
||
of this triangle, to the height, h1. The ratio of h2 to h1 is then multiplied
|
||
by 3<span
|
||
style="vertical-align: Super; font-size: 10pt;"><font size=2 style="font-size:10pt;">(1/2)</font></span> /2, so that
|
||
a <20>perfect<63> element in the shape of an equilateral triangle will be equal
|
||
to 1. This procedure is repeated for the remaining two edges of the triangle,
|
||
and the largest value is retained as the <span style="font-weight: bold;"><B>Aspect
|
||
Ratio</B></span> for the element.</p></li>
|
||
</ul>
|
||
|
||
<p> </p>
|
||
|
||
<p class="whs3"><img src="../image26.jpg" width="238px" height="205px" border="0" class="img_whs4"></p>
|
||
|
||
<p> </p>
|
||
|
||
<p class="whs5"> </p>
|
||
|
||
<ul type="disc" class="whs2">
|
||
|
||
<li class=kadov-p><p class="whs5">For a <span style="font-weight: bold;"><B>quadrangle</B></span>
|
||
2D element consisting of 4 nodes the
|
||
<span style="font-weight: bold;"><B>Aspect Ratio </B></span>is the ratio of the
|
||
element's longest side to its shortest side.</p></li>
|
||
</ul>
|
||
|
||
<p class="whs3"><img src="../image22.gif" width="226px" height="70px" border="0" class="img_whs6"></p>
|
||
|
||
<p class="whs3"> </p>
|
||
|
||
<p class=TODO>To apply the Aspect Ratio quality criterion to your mesh:</p>
|
||
|
||
<p class=TODO> </p>
|
||
|
||
<p class="whs7">1. Display your mesh in the viewer.</p>
|
||
|
||
<p class="whs7"> </p>
|
||
|
||
<p class="whs7">2. Choose <span style="font-weight: bold;"><B>Quality
|
||
Controls > Aspect Ratio </B></span>or click <img src="../image37.gif" width="25px" height="24px" border="0" class="img_whs8"> button in the
|
||
toolbar. Your mesh will be displayed in the viewer with its elements colored
|
||
according to the applied mesh quality control criterion:</p>
|
||
|
||
<p class="whs7"> </p>
|
||
|
||
<p class="whs7"><img src="../image7.jpg" width="467px" height="327px" border="0" class="img_whs9"></p>
|
||
|
||
<script type="text/javascript" language="javascript1.2">
|
||
<!--
|
||
if (window.writeIntopicBar)
|
||
writeIntopicBar(0);
|
||
//-->
|
||
</script>
|
||
</body>
|
||
|
||
</html>
|