<!doctype HTML public "-//W3C//DTD HTML 4.0 Frameset//EN"> <html> <!--(==============================================================)--> <!--(Document created with RoboEditor. )============================--> <!--(==============================================================)--> <head> <title>Warp</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=1161> <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; float: none; width: 30px; height: 30px;} p.whs2 {margin-left: 40px;} p.whs3 {margin-left: 0px;} img_whs4 {border-style: none; border: none; width: 496px; height: 336px;} img_whs5 {border-style: none; border: none; width: 23px; height: 23px;} img_whs6 {border-style: none; border: none; width: 467px; height: 326px;} --> </style> <script type="text/javascript" language="JavaScript"> <!-- if ((navigator.appName == "Netscape") && (parseInt(navigator.appVersion) == 4)) { var strNSS = "<style type='text/css'>"; strNSS += "p.whs3 {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\nWarping"); 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>Warping</h1> <p><img src="../i_blue.jpg" x-maintain-ratio="TRUE" width="30px" height="30px" border="0" class="img_whs1"> <span style="font-weight: bold;"><B>Warping</B></span> indicates that a face is not planar and is applied only to 2D elements with 4 nodes. This quality control criterion is based on a projection plane created by:</p> <p class="whs2">1. bisecting the four element edges, </p> <p class="whs2">2. creating a point on the plane at the vector average of the corners, where the x-axis extends from the point to the bisector on edge 2. </p> <p class="whs3">The plane normal is in the direction of the cross product of the x-axis and the vector from the origin to the bisector of edge 3. Every corner of the quad will then be a distance �h� from the plane. The length of each half edge is measured and the shortest length is assigned �l�. The warp angle is the arcsine of the ratio of the projection height �h� to the half edge length �l�. </p> <p> </p> <p class="whs2"><img src="../image24.gif" width="496px" height="336px" border="0" class="img_whs4"></p> <p class="whs2"> </p> <p class=TODO> </p> <p class=TODO>To apply the Warping quality criterion to your mesh:</p> <p class=TODO> </p> <p class="whs2">1. Display your mesh in the viewer.</p> <p class="whs2"> </p> <p class="whs2">2. Choose <span style="font-weight: bold;"><B>Quality Controls > Warp </B></span>or click <img src="../image39.gif" width="23px" height="23px" border="0" class="img_whs5"> button of 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="whs2"> </p> <p class="whs2"><img src="../image9.jpg" width="467px" height="326px" border="0" class="img_whs6"></p> <p class="whs2"> </p> <script type="text/javascript" language="javascript1.2"> <!-- if (window.writeIntopicBar) writeIntopicBar(0); //--> </script> </body> </html>