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      <title>NX to AP203 CC2</title>
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      <div class="title_topic4" id="xps10_pagetitle">NX to AP203 CC2</div>
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      <div class="title_division">Class 2 &ndash; Wireframe without topology (for configuration management data, see  Class 1)</div>
      <table cellpadding="2" cellspacing="4" width="95%" align="center">
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            <col span="1" width="99*">
            <col span="1" width="216*">
            <col span="1" width="61*">
            <col span="1" width="61*">
            <col span="1" width="61*">
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         <tr bgcolor="#C0C0C0" valign="top">
            <th bgcolor="#c0c0c0" colspan="1" rowspan="1" valign="top">
               <p class="para_th">NX Entity</p>
            </th>
            <th bgcolor="#c0c0c0" colspan="1" rowspan="1" valign="top">
               <p class="para_th">STEP Entity</p>
            </th>
            <th bgcolor="#c0c0c0" colspan="3" rowspan="1" valign="top">
               <p class="para_th">Notes</p>
            </th>
         </tr>
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            <td bgcolor="#f7f7f7" colspan="1" rowspan="1" valign="top"></td>
            <td bgcolor="#f7f7f7" colspan="1" rowspan="1" valign="top">
               <p class="para_td">geometrically_bounded_</p>
               <p class="para_td">wireframe_shape_representation</p>
               <p class="para_td">&rarr;geometric_curve_set</p>
            </td>
            <td bgcolor="#f7f7f7" colspan="3" rowspan="1" valign="top">
               <p class="para_td">1</p>
            </td>
         </tr>
         <tr valign="top">
            <td bgcolor="#f7f7f7" colspan="1" rowspan="1" valign="top">
               <p class="para_td">point</p>
            </td>
            <td bgcolor="#f7f7f7" colspan="1" rowspan="1" valign="top">
               <p class="para_td">Cartesian_point</p>
            </td>
            <td bgcolor="#f7f7f7" colspan="3" rowspan="1" valign="top">
               <p class="para_td">&nbsp;&ndash;</p>
            </td>
         </tr>
         <tr valign="top">
            <td bgcolor="#f7f7f7" colspan="1" rowspan="1" valign="top">
               <p class="para_td">arc</p>
            </td>
            <td bgcolor="#f7f7f7" colspan="1" rowspan="1" valign="top">
               <p class="para_td">circle</p>
            </td>
            <td bgcolor="#f7f7f7" colspan="3" rowspan="1" valign="top">
               <p class="para_td">2</p>
            </td>
         </tr>
         <tr valign="top">
            <td bgcolor="#f7f7f7" colspan="1" rowspan="1" valign="top">
               <p class="para_td">b&ndash;curve</p>
            </td>
            <td bgcolor="#f7f7f7" colspan="1" rowspan="1" valign="top">
               <p class="para_td">b_spline_curve_with_knots</p>
            </td>
            <td bgcolor="#f7f7f7" colspan="3" rowspan="1" valign="top">
               <p class="para_td">2</p>
            </td>
         </tr>
         <tr valign="top">
            <td bgcolor="#f7f7f7" colspan="1" rowspan="1" valign="top">
               <p class="para_td">ellipse</p>
            </td>
            <td bgcolor="#f7f7f7" colspan="1" rowspan="1" valign="top">
               <p class="para_td">ellipse</p>
            </td>
            <td bgcolor="#f7f7f7" colspan="3" rowspan="1" valign="top">
               <p class="para_td">2</p>
            </td>
         </tr>
         <tr valign="top">
            <td bgcolor="#f7f7f7" colspan="1" rowspan="1" valign="top">
               <p class="para_td">line</p>
            </td>
            <td bgcolor="#f7f7f7" colspan="1" rowspan="1" valign="top">
               <p class="para_td">line</p>
            </td>
            <td bgcolor="#f7f7f7" colspan="3" rowspan="1" valign="top">
               <p class="para_td">2</p>
            </td>
         </tr>
         <tr valign="top">
            <td bgcolor="#f7f7f7" colspan="1" rowspan="1" valign="top">
               <p class="para_td">parabola</p>
            </td>
            <td bgcolor="#f7f7f7" colspan="1" rowspan="1" valign="top">
               <p class="para_td">parabola</p>
            </td>
            <td bgcolor="#f7f7f7" colspan="3" rowspan="1" valign="top">
               <p class="para_td">2</p>
            </td>
         </tr>
         <tr bgcolor="#F0F0F0" valign="top">
            <td bgcolor="#f7f7f7" colspan="1" rowspan="1" valign="top">
               <p class="para_td">hyperbola</p>
            </td>
            <td bgcolor="#f7f7f7" colspan="1" rowspan="1" valign="top">
               <p class="para_td">hyperbola</p>
            </td>
            <td bgcolor="#f7f7f7" colspan="3" rowspan="1" valign="top">
               <p class="para_td">2</p>
            </td>
         </tr>
      </table><br><div class="title_division">Notes</div>
      <table cellpadding="2" cellspacing="4" width="95%" align="center">
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            <col span="1" width="41*">
            <col span="1" width="157*">
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         <tr valign="top">
            <td bgcolor="#f7f7f7" colspan="1" rowspan="1" valign="top">
               <p class="para_td">Note 1</p>
            </td>
            <td bgcolor="#f7f7f7" colspan="1" rowspan="1" valign="top">
               <p class="para_td">If one or more of the listed NX entities exist in the part file, one geometrically_bounded_surface_shape_representation&rarr;geometric_curve_set STEP entity is created.</p>
            </td>
         </tr>
         <tr bgcolor="#F0F0F0" valign="top">
            <td bgcolor="#f7f7f7" colspan="1" rowspan="1" valign="top">
               <p class="para_td">Note 2</p>
            </td>
            <td bgcolor="#f7f7f7" colspan="1" rowspan="1" valign="top">
               <p class="para_td">STEP trimmed curves are attached to the STEP entity if appropriate.</p>
            </td>
         </tr>
      </table><br><table cellpadding="2" cellspacing="4" width="95%" align="center">
         <colgroup span="1">
            <col span="1" width="98*">
            <col span="1" width="308*">
            <col span="1" width="30*">
            <col span="1" width="30*">
            <col span="1" width="30*">
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            <th bgcolor="#c0c0c0" colspan="5" rowspan="1" valign="top">
               <p class="para_th">Class 2 &ndash; Surfaces without Topology (for configuration management data, see Class 1)</p>
            </th>
         </tr>
         <tr bgcolor="#C0C0C0" valign="top">
            <th bgcolor="#c0c0c0" colspan="1" rowspan="1" valign="top">
               <p class="para_th">NX Entity</p>
            </th>
            <th bgcolor="#c0c0c0" colspan="1" rowspan="1" valign="top">
               <p class="para_th">STEP Entity</p>
            </th>
            <th bgcolor="#c0c0c0" colspan="3" rowspan="1" valign="top">
               <p class="para_th">Notes</p>
            </th>
         </tr>
         <tr valign="top">
            <td bgcolor="#f7f7f7" colspan="1" rowspan="1" valign="top">
               <p class="para_td">sheet_body&rarr;face</p>
            </td>
            <td bgcolor="#f7f7f7" colspan="1" rowspan="1" valign="top">
               <p class="para_td">geometrically_bounded_surface_</p>
               <p class="para_td">shape_representation&rarr;geometric_set&rarr;curve_bounded_surface</p>
            </td>
            <td bgcolor="#f7f7f7" colspan="3" rowspan="1" valign="top">
               <p class="para_td">1</p>
            </td>
         </tr>
         <tr valign="top">
            <td bgcolor="#f7f7f7" colspan="1" rowspan="1" valign="top">
               <p class="para_td">&nbsp; b&ndash;surface</p>
            </td>
            <td bgcolor="#f7f7f7" colspan="1" rowspan="1" valign="top">
               <p class="para_td">&nbsp; b_spline_surface</p>
            </td>
            <td bgcolor="#f7f7f7" colspan="3" rowspan="1" valign="top">
               <p class="para_td">&nbsp;&ndash;</p>
            </td>
         </tr>
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            <td bgcolor="#f7f7f7" colspan="1" rowspan="1" valign="top">
               <p class="para_td">&nbsp; cone</p>
            </td>
            <td bgcolor="#f7f7f7" colspan="1" rowspan="1" valign="top">
               <p class="para_td">&nbsp; conical_surface</p>
            </td>
            <td bgcolor="#f7f7f7" colspan="3" rowspan="1" valign="top">
               <p class="para_td">&nbsp;&ndash;</p>
            </td>
         </tr>
         <tr valign="top">
            <td bgcolor="#f7f7f7" colspan="1" rowspan="1" valign="top">
               <p class="para_td">&nbsp; cylinder</p>
            </td>
            <td bgcolor="#f7f7f7" colspan="1" rowspan="1" valign="top">
               <p class="para_td">&nbsp; cylindrical_surface</p>
            </td>
            <td bgcolor="#f7f7f7" colspan="3" rowspan="1" valign="top">
               <p class="para_td">&nbsp;&ndash;</p>
            </td>
         </tr>
         <tr valign="top">
            <td bgcolor="#f7f7f7" colspan="1" rowspan="1" valign="top">
               <p class="para_td">&nbsp; offset surface</p>
            </td>
            <td bgcolor="#f7f7f7" colspan="1" rowspan="1" valign="top">
               <p class="para_td">&nbsp; offset_surface</p>
            </td>
            <td bgcolor="#f7f7f7" colspan="3" rowspan="1" valign="top">
               <p class="para_td">3</p>
            </td>
         </tr>
         <tr valign="top">
            <td bgcolor="#f7f7f7" colspan="1" rowspan="1" valign="top">
               <p class="para_td">&nbsp; plane</p>
            </td>
            <td bgcolor="#f7f7f7" colspan="1" rowspan="1" valign="top">
               <p class="para_td">&nbsp; plane</p>
            </td>
            <td bgcolor="#f7f7f7" colspan="3" rowspan="1" valign="top">
               <p class="para_td">&ndash;&nbsp;</p>
            </td>
         </tr>
         <tr valign="top">
            <td bgcolor="#f7f7f7" colspan="1" rowspan="1" valign="top">
               <p class="para_td">&nbsp; sphere</p>
            </td>
            <td bgcolor="#f7f7f7" colspan="1" rowspan="1" valign="top">
               <p class="para_td">&nbsp; spherical_surface</p>
            </td>
            <td bgcolor="#f7f7f7" colspan="3" rowspan="1" valign="top">
               <p class="para_td">&ndash;&nbsp;</p>
            </td>
         </tr>
         <tr valign="top">
            <td bgcolor="#f7f7f7" colspan="1" rowspan="1" valign="top">
               <p class="para_td">&nbsp; surface of revolution</p>
            </td>
            <td bgcolor="#f7f7f7" colspan="1" rowspan="1" valign="top">
               <p class="para_td">&nbsp; surface_of_revolution</p>
            </td>
            <td bgcolor="#f7f7f7" colspan="3" rowspan="1" valign="top">
               <p class="para_td">&ndash;&nbsp;</p>
            </td>
         </tr>
         <tr valign="top">
            <td bgcolor="#f7f7f7" colspan="1" rowspan="1" valign="top">
               <p class="para_td">&nbsp; extruded surface</p>
            </td>
            <td bgcolor="#f7f7f7" colspan="1" rowspan="1" valign="top">
               <p class="para_td">&nbsp; surface_of_linear_extrusion</p>
            </td>
            <td bgcolor="#f7f7f7" colspan="3" rowspan="1" valign="top">
               <p class="para_td">&nbsp;&ndash;</p>
            </td>
         </tr>
         <tr valign="top">
            <td bgcolor="#f7f7f7" colspan="1" rowspan="1" valign="top">
               <p class="para_td">&nbsp; torus</p>
            </td>
            <td bgcolor="#f7f7f7" colspan="1" rowspan="1" valign="top">
               <p class="para_td">&nbsp; toroidal_surface</p>
            </td>
            <td bgcolor="#f7f7f7" colspan="3" rowspan="1" valign="top">
               <p class="para_td">&ndash;&nbsp;</p>
            </td>
         </tr>
         <tr valign="top">
            <td bgcolor="#f7f7f7" colspan="1" rowspan="1" valign="top">
               <p class="para_td">&nbsp; blending surface</p>
            </td>
            <td bgcolor="#f7f7f7" colspan="1" rowspan="1" valign="top">
               <p class="para_td">&nbsp; b_spline_surface</p>
            </td>
            <td bgcolor="#f7f7f7" colspan="3" rowspan="1" valign="top">
               <p class="para_td">2, 3</p>
            </td>
         </tr>
         <tr valign="top">
            <td bgcolor="#f7f7f7" colspan="1" rowspan="1" valign="top">
               <p class="para_td">&nbsp; degenerate (apple/lemon)</p>
               <p class="para_td">&nbsp; torus</p>
            </td>
            <td bgcolor="#f7f7f7" colspan="1" rowspan="1" valign="top">
               <p class="para_td">&nbsp; b_spline_surface</p>
            </td>
            <td bgcolor="#f7f7f7" colspan="3" rowspan="1" valign="top">
               <p class="para_td">2, 3, 4</p>
            </td>
         </tr>
         <tr valign="top">
            <td bgcolor="#f7f7f7" colspan="1" rowspan="1" valign="top">
               <p class="para_td">sheet_body&rarr;edge</p>
            </td>
            <td bgcolor="#f7f7f7" colspan="1" rowspan="1" valign="top">
               <p class="para_td">boundary_curve</p>
            </td>
            <td bgcolor="#f7f7f7" colspan="3" rowspan="1" valign="top">
               <p class="para_td">&ndash;&nbsp;</p>
            </td>
         </tr>
         <tr valign="top">
            <td bgcolor="#f7f7f7" colspan="1" rowspan="1" valign="top">
               <p class="para_td">&nbsp; b-curve</p>
            </td>
            <td bgcolor="#f7f7f7" colspan="1" rowspan="1" valign="top">
               <p class="para_td">&nbsp; b_spline_curve</p>
            </td>
            <td bgcolor="#f7f7f7" colspan="3" rowspan="1" valign="top">
               <p class="para_td">5</p>
            </td>
         </tr>
         <tr valign="top">
            <td bgcolor="#f7f7f7" colspan="1" rowspan="1" valign="top">
               <p class="para_td">&nbsp; circle</p>
            </td>
            <td bgcolor="#f7f7f7" colspan="1" rowspan="1" valign="top">
               <p class="para_td">&nbsp; circle</p>
            </td>
            <td bgcolor="#f7f7f7" colspan="3" rowspan="1" valign="top">
               <p class="para_td">&ndash;&nbsp;</p>
            </td>
         </tr>
         <tr valign="top">
            <td bgcolor="#f7f7f7" colspan="1" rowspan="1" valign="top">
               <p class="para_td">&nbsp; ellipse</p>
            </td>
            <td bgcolor="#f7f7f7" colspan="1" rowspan="1" valign="top">
               <p class="para_td">&nbsp; ellipse</p>
            </td>
            <td bgcolor="#f7f7f7" colspan="3" rowspan="1" valign="top">
               <p class="para_td">&ndash;&nbsp;</p>
            </td>
         </tr>
         <tr valign="top">
            <td bgcolor="#f7f7f7" colspan="1" rowspan="1" valign="top">
               <p class="para_td">&nbsp; line</p>
            </td>
            <td bgcolor="#f7f7f7" colspan="1" rowspan="1" valign="top">
               <p class="para_td">&nbsp; line</p>
            </td>
            <td bgcolor="#f7f7f7" colspan="3" rowspan="1" valign="top">
               <p class="para_td">&ndash;&nbsp;</p>
            </td>
         </tr>
         <tr valign="top">
            <td bgcolor="#f7f7f7" colspan="1" rowspan="1" valign="top">
               <p class="para_td">&nbsp; intersection curve</p>
            </td>
            <td bgcolor="#f7f7f7" colspan="1" rowspan="1" valign="top">
               <p class="para_td">&nbsp; b_spline_curve</p>
            </td>
            <td bgcolor="#f7f7f7" colspan="3" rowspan="1" valign="top">
               <p class="para_td">2, 5</p>
            </td>
         </tr>
         <tr valign="top">
            <td bgcolor="#f7f7f7" colspan="1" rowspan="1" valign="top">
               <p class="para_td">&nbsp; sp-curve</p>
            </td>
            <td bgcolor="#f7f7f7" colspan="1" rowspan="1" valign="top">
               <p class="para_td">&nbsp; b_spline_curve</p>
            </td>
            <td bgcolor="#f7f7f7" colspan="3" rowspan="1" valign="top">
               <p class="para_td">2, 5</p>
            </td>
         </tr>
         <tr bgcolor="#F0F0F0" valign="top">
            <td bgcolor="#f7f7f7" colspan="1" rowspan="1" valign="top">
               <p class="para_td">&nbsp; trimmed curve</p>
            </td>
            <td bgcolor="#f7f7f7" colspan="1" rowspan="1" valign="top">
               <p class="para_td">&nbsp; b_spline_curve</p>
            </td>
            <td bgcolor="#f7f7f7" colspan="3" rowspan="1" valign="top">
               <p class="para_td">2, 5</p>
            </td>
         </tr>
      </table><br><table cellpadding="2" cellspacing="4" width="95%" align="center">
         <colgroup span="1">
            <col span="1" width="38*">
            <col span="1" width="161*">
         </colgroup>
         <tr valign="top">
            <td bgcolor="#f7f7f7" colspan="1" rowspan="1" valign="top">
               <p class="para_td">Note 1</p>
            </td>
            <td bgcolor="#f7f7f7" colspan="1" rowspan="1" valign="top">
               <p class="para_td">If one or more of the listed NX entities exist in the part file, one geometrically_bounded_wireframe_shape_representation&rarr;geometric_set STEP entity is created.</p>
            </td>
         </tr>
         <tr valign="top">
            <td bgcolor="#f7f7f7" colspan="1" rowspan="1" valign="top">
               <p class="para_td">Note 2</p>
            </td>
            <td bgcolor="#f7f7f7" colspan="1" rowspan="1" valign="top">
               <p class="para_td">This NX entity is approximated to the STEP b_spline representation.</p>
            </td>
         </tr>
         <tr valign="top">
            <td bgcolor="#f7f7f7" colspan="1" rowspan="1" valign="top">
               <p class="para_td">Note 3</p>
            </td>
            <td bgcolor="#f7f7f7" colspan="1" rowspan="1" valign="top">
               <p class="para_td">Either a STEP b_spline_surface_with_knots or</p>
               <p class="para_td">b_spline_surface_with_ knots_and_rational_b_spline_surface entity is generated.</p>
            </td>
         </tr>
         <tr valign="top">
            <td bgcolor="#f7f7f7" colspan="1" rowspan="1" valign="top">
               <p class="para_td">Note 4</p>
            </td>
            <td bgcolor="#f7f7f7" colspan="1" rowspan="1" valign="top">
               <p class="para_td">An apple is defined as a NX toroidal surface whose major radius is positive and smaller than said toroidal surface's minor radius. A lemon is defined as a NX toroidal surface whose major radius is negative and whose sum of said toroidal surface's major and minor radius is positive.</p>
            </td>
         </tr>
         <tr bgcolor="#F0F0F0" valign="top">
            <td bgcolor="#f7f7f7" colspan="1" rowspan="1" valign="top">
               <p class="para_td">Note 5</p>
            </td>
            <td bgcolor="#f7f7f7" colspan="1" rowspan="1" valign="top">
               <p class="para_td">Either a STEP b_spline_curve_with_knots or</p>
               <p class="para_td">b_spline_curve_with_ knots_and_rational_b_spline_curve entity is generated.</p>
            </td>
         </tr>
      </table><br></body>
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