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<h1 class="firstHeading">Tutorial:ACIS Tutorials (Geometry)</h1>
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<table style="background:transparent; font-size:90%; text-align:center; width:100%" cellspacing="0" cellpadding="0" border="0"><tr><td style="padding:0.5em; background-color:#e3e5e7; font-size:90%; line-height:0.95em; border:1px solid #A3B1BF; border-bottom:solid 2px #A3B1BF" width="20"> <a href="/r18/index.php/Tutorial:ACIS_Tutorials" title="Tutorial:ACIS Tutorials">Start</a></td><td style="border-bottom:2px solid #A3B1BF" width="3"> </td><td style="padding:0.5em; background-color:#e3e5e7; font-size:90%; line-height:0.95em; border:1px solid #A3B1BF; border-bottom:solid 2px #A3B1BF" width="20"> <a href="/r18/index.php/Tutorial:ACIS_Tutorials_%28Background%29" title="Tutorial:ACIS Tutorials (Background)">Fundamentals</a></td><td style="border-bottom:2px solid #A3B1BF" width="3"> </td><td style="padding:0.5em; background-color:#e3e5e7; font-size:90%; line-height:0.95em; border:1px solid #A3B1BF; border-bottom:solid 2px #A3B1BF" width="20"> <a href="/r18/index.php/Tutorial:ACIS_Tutorials_%28Creating_Applications%29" title="Tutorial:ACIS Tutorials (Creating Applications)">Creating Applications</a></td><td style="border-bottom:2px solid #A3B1BF" width="3"> </td><td style="padding:0.5em; background-color:#e3e5e7; font-size:90%; line-height:0.95em; border:1px solid #A3B1BF; border-bottom:solid 2px #A3B1BF" width="20"> <a href="/r18/index.php/Tutorial:ACIS_Tutorials_%28Model_Topology%29" title="Tutorial:ACIS Tutorials (Model Topology)">Topology</a></td><td style="border-bottom:2px solid #A3B1BF" width="3"> </td><td style="padding:0.5em; background-color:white; line-height:0.95em; border:solid 2px #A3B1BF; border-bottom:0; font-weight:bold;" width="20"> <strong class="selflink">Geometry</strong></td><td style="border-bottom:2px solid #A3B1BF" width="3"> </td><td style="padding:0.5em; background-color:#e3e5e7; font-size:90%; line-height:0.95em; border:1px solid #A3B1BF; border-bottom:solid 2px #A3B1BF" width="20"> <a href="/r18/index.php/Tutorial:ACIS_Tutorials_%28Math_Classes%29" title="Tutorial:ACIS Tutorials (Math Classes)">Math Classes</a></td><td style="border-bottom:2px solid #A3B1BF" width="3"> </td><td style="padding:0.5em; background-color:#e3e5e7; font-size:90%; line-height:0.95em; border:1px solid #A3B1BF; border-bottom:solid 2px #A3B1BF" width="20"> <a href="/r18/index.php/Tutorial:ACIS_Tutorials_%28ACIS_Tolerances%29" title="Tutorial:ACIS Tutorials (ACIS Tolerances)">Tolerances</a></td><td style="border-bottom:2px solid #A3B1BF" width="3"> </td><td style="padding:0.5em; background-color:#e3e5e7; font-size:90%; line-height:0.95em; border:1px solid #A3B1BF; border-bottom:solid 2px #A3B1BF" width="20"> <a href="/r18/index.php/Tutorial:ACIS_Tutorials_%28Options%29" title="Tutorial:ACIS Tutorials (Options)">Options</a></td><td style="border-bottom:2px solid #A3B1BF" width="3"> </td><td style="padding:0.5em; background-color:#e3e5e7; font-size:90%; line-height:0.95em; border:1px solid #A3B1BF; border-bottom:solid 2px #A3B1BF" width="20"> <a href="/r18/index.php/Tutorial:ACIS_Tutorials_%28Memory_Management%29" title="Tutorial:ACIS Tutorials (Memory Management)">Memory Management</a></td><td style="border-bottom:2px solid #A3B1BF" width="3"> </td><td style="padding:0.5em; background-color:#e3e5e7; font-size:90%; line-height:0.95em; border:1px solid #A3B1BF; border-bottom:solid 2px #A3B1BF" width="20"> <a href="/r18/index.php/Tutorial:ACIS_Tutorials_%28Exception_Handling%29" title="Tutorial:ACIS Tutorials (Exception Handling)">Exception Handling</a></td><td style="border-bottom:2px solid #A3B1BF" width="3"> </td><td style="padding:0.5em; background-color:#e3e5e7; font-size:90%; line-height:0.95em; border:1px solid #A3B1BF; border-bottom:solid 2px #A3B1BF" width="20"> <a href="/r18/index.php/Tutorial:ACIS_Tutorials_%28History_Streams%29" title="Tutorial:ACIS Tutorials (History Streams)">History</a></td><td style="border-bottom:2px solid #A3B1BF" width="3"> </td><td style="padding:0.5em; background-color:#e3e5e7; font-size:90%; line-height:0.95em; border:1px solid #A3B1BF; border-bottom:solid 2px #A3B1BF" width="20"> <a href="/r18/index.php/Tutorial:ACIS_Tutorials_%28Attributes%29" title="Tutorial:ACIS Tutorials (Attributes)">Attributes</a></td><td style="border-bottom:2px solid #A3B1BF" width="3"> </td><td style="padding:0.5em; background-color:#e3e5e7; font-size:90%; line-height:0.95em; border:1px solid #A3B1BF; border-bottom:solid 2px #A3B1BF" width="20"> <a href="/r18/index.php/Tutorial:ACIS_Tutorials_%28Importing_Non-ACIS_Models%29" title="Tutorial:ACIS Tutorials (Importing Non-ACIS Models)">Importing Models</a></td><td style="border-bottom:2px solid #A3B1BF" width="3"> </td><td style="border-bottom:2px solid #A3B1BF" width="3000"> </td></tr></table><div style="border:2px solid #A3B1BF; padding:.5em 1em 1em 1em; border-top:none; background-color:#fff; color:#000"><a name="Geometry"></a><h2> <span class="mw-headline"> Geometry </span></h2><div style="float:right;"><a href="http://doc.spatial.com/r18/index.php?title=Tutorial:ACIS_Tutorial_4:_The_basics_of_ACIS_geometry_%28Part_1%29&action=edit" class="external text" title="http://doc.spatial.com/r18/index.php?title=Tutorial:ACIS_Tutorial_4:_The_basics_of_ACIS_geometry_%28Part_1%29&action=edit" rel="nofollow"><span style="color: #000000">edit</span></a></div><table id="toc" class="toc" summary="Contents"><tr><td><div id="toctitle"><h2>Contents</h2></div><ul><li class="toclevel-1"><a href="#Geometry"><span class="tocnumber">1</span> <span class="toctext">Geometry</span></a></li><li class="toclevel-1"><a href="#Introduction"><span class="tocnumber">2</span> <span class="toctext">Introduction</span></a></li><li class="toclevel-1"><a href="#Points"><span class="tocnumber">3</span> <span class="toctext">Points</span></a></li><li class="toclevel-1"><a href="#Curves"><span class="tocnumber">4</span> <span class="toctext">Curves</span></a><ul><li class="toclevel-2"><a href="#curves_.28lower_case_classes.29"><span class="tocnumber">4.1</span> <span class="toctext">curves (lower case classes)</span></a></li><li class="toclevel-2"><a href="#CURVES_.28upper_case_classes.29"><span class="tocnumber">4.2</span> <span class="toctext">CURVES (upper case classes)</span></a></li></ul></li><li class="toclevel-1"><a href="#Surfaces"><span class="tocnumber">5</span> <span class="toctext">Surfaces</span></a><ul><li class="toclevel-2"><a href="#surfaces_.28lower_case_classes.29"><span class="tocnumber">5.1</span> <span class="toctext">surfaces (lower case classes)</span></a></li><li class="toclevel-2"><a href="#SURFACES_.28upper_case_classes.29"><span class="tocnumber">5.2</span> <span class="toctext">SURFACES (upper case classes)</span></a></li></ul></li><li class="toclevel-1"><a href="#Parameter_Space_Curves_.28Pcurves.29"><span class="tocnumber">6</span> <span class="toctext">Parameter Space Curves (Pcurves)</span></a><ul><li class="toclevel-2"><a href="#pcurve_.28lower_case_class.29"><span class="tocnumber">6.1</span> <span class="toctext">pcurve (lower case class)</span></a></li><li class="toclevel-2"><a href="#PCURVE_.28upper_case_class.29"><span class="tocnumber">6.2</span> <span class="toctext">PCURVE (upper case class)</span></a></li><li class="toclevel-2"><a href="#Pcurve-related_Functions"><span class="tocnumber">6.3</span> <span class="toctext">Pcurve-related Functions</span></a></li></ul></li>⌨️ 快捷键说明
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