<!DOCTYPE html
  PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<!--
Copyright (c) 2006 UGS Corp.

All Rights Reserved.

This software and related documentation are proprietary to UGS Corp.
-->
<html>
   <head>
      <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
      <title>Show Knots / Show Hidden Curvature Comb</title>
      <script language="javaScript">
        abridged="false";
        displayConditions=new Array();
      </script>
      <link type="text/css" href="../css/main_styles.css" rel="stylesheet">
   </head>
   <body class="bodydocs" onload="top.pageLoader()" bgcolor="#FFFFFF">
      <div class="title_topic1" id="xps10_pagetitle">Show Knots / Show Hidden Curvature Comb</div>
      <hr noshade="true">
      <p class="para_topic"><img align="bottom" src="graphics/show_knots.gif" border="0"> Controls the display of B-spline curves and surfaces, and hidden curvature combs.
      </p>
      <p class="para_topic">Displaying the knot points and knot lines of B-spline curves and surfaces as you model them makes it easier to see when too many segments/patches or C0/C1 knots have been added to your model.</p>
      <ul>
         <li>
            <p class="para_item">Show the knot points of selected B-spline curves in different marker types that indicate their continuity (<b class="uiTerm">Show Knots</b>).
            </p>
            <div class="figure">
               <p align="center"><img align="bottom" src="graphics/bcurve_knotpoints.gif"></p>
            </div>
            <div class="title_figure">B-spline curve with knot points</div>
         </li>
         <li>
            <p class="para_item">Show the knot lines of selected B-spline surfaces in different colors and line fonts that indicate continuity (<b class="uiTerm">Show Knots</b>). 
            </p>
            <div class="figure">
               <p align="center"><img align="bottom" src="graphics/bsurface_knotlines.gif"></p>
            </div>
            <div class="title_figure">B-spline surface without knot lines (left) and with (right)</div>
         </li>
         <li>
            <p class="para_item">Set curvature combs to show through obstructing geometry (<b class="uiTerm">Show Hidden Curvature Comb</b>).  
            </p>
         </li>
         <li>
            <p class="para_item">Show a curvature comb's cap line, and draw the comb in high density with only a few needles, reducing clutter in the graphics window (<b class="uiTerm">Preferences</b>&rarr;<b class="uiTerm">Modeling</b>&rarr;<b class="uiTerm">Analysis</b> tab). 
            </p>
         </li>
      </ul>
      <div class="title_division">Where do I find it?</div>
      <ul>
         <li>
            <p class="para_item">On the <b class="uiTerm">Analyze Shape</b> toolbar click, <b class="uiTerm">Show Knots</b> <img align="bottom" src="graphics/show_knots.gif" border="0">.
            </p>
         </li>
         <li>
            <p class="para_item">Choose <b class="uiTerm">Analysis</b>&rarr;<b class="uiTerm">Shape</b>&rarr;<b class="uiTerm">Show Knots</b>. 
            </p>
         </li>
         <li>
            <p class="para_item">Choose <b class="uiTerm">Analysis</b>&rarr;<b class="uiTerm">Shape</b>&rarr;<b class="uiTerm">Show Hidden Curvature Comb</b>.
            </p>
         </li>
      </ul>
      <p class="para_division">Specify curvature comb display styles from the <b class="uiTerm">Preferences</b>&rarr;<b class="uiTerm">Modeling</b>&rarr;<b class="uiTerm">Analysis</b> tab.
      </p>
   </body>
</html>