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      <title>Offset and derived curves</title>
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      <div class="title_topic4" id="xps10_pagetitle">Offset and derived curves</div>
      <hr noshade="true"><a name="ndxgenid_roadmap679"></a><p class="para_topic"><img align="bottom" src="graphics/commandref/ideas_logo.gif" border="0"><img align="bottom" src="graphics/commandref/arrow.gif" border="0"><img align="bottom" src="graphics/commandref/nx_logo.gif" border="0"></p>
      <p class="para_topic"><img align="bottom" src="graphics/widgets/rule2.gif" border="0"> Row 3, Column 3<img align="bottom" src="graphics/widgets/rule2.gif" border="0"> 
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      <p class="para_topic"></p><a name="qt_mm_3_3"></a><dl>
         <dt>
            <p class="defObject"><img align="bottom" src="graphics/commandref/ideas_rule.gif" border="0"><br><img align="bottom" src="graphics/ideas/des_mm_offset.gif" border="0"> <b class="uiTerm">Offset</b></p>
         </dt>
         <dd>
            <p class="para_defMeaning"><img align="bottom" src="graphics/commandref/nx_rule.gif" border="0"></p>
            <table border="0">
               <tr>
                  <td valign="top" align="left"><img align="left" src="../graphics/tip.gif" alt="Tip" title="Tip"></td>
                  <td valign="bottom" align="left" width="100%">
                     <div class="para_tip">
                        <p class="para_tip_body">Since <b class="uiTerm">Offset</b> is an option of <b class="uiTerm">Extrude</b>, you may not need to create an offset before extruding.
                        </p>
                     </div>
                  </td>
               </tr>
            </table>
            <p class="para_defMeaning">To offset individual lines in a sketch:</p>
            <ul class="unmarkedList">
               <li>
                  <p class="para_defMeaning">Use <b class="uiTerm">Derived Lines</b> in the <b class="uiTerm">Sketch Curve</b> toolbar.
                  </p>
               </li>
            </ul>
            <p class="para_defMeaning">To offset curves in a sketch:</p>
            <ul class="unmarkedList">
               <li>
                  <p class="para_defMeaning"><img align="bottom" src="graphics/icons/icon_offset_curve.gif" border="0"> <b class="uiTerm">Offset Projected Curves</b> in the <b class="uiTerm">Sketch Operations</b> toolbar.
                  </p>
               </li>
               <li>
                  <p class="para_defMeaning">To use this option, first extract curves, then project them to the sketch.</p>
               </li>
            </ul>
            <p class="para_defMeaning">To offset non-sketch curves:</p>
            <ul class="unmarkedList">
               <li>
                  <p class="para_defMeaning"><b class="uiTerm">Insert</b> &rarr; <b class="uiTerm">Curve from Curves</b> &rarr; <b class="uiTerm">Offset</b></p>
               </li>
               <li>
                  <p class="para_defMeaning"><b class="uiTerm">Insert</b> &rarr; <b class="uiTerm">Curve from Curves</b> &rarr; <b class="uiTerm">Offset in Face</b></p>
               </li>
            </ul>
            <p class="para_defMeaning">See also:</p>
            <ul class="unmarkedList">
               <li>
                  <p class="para_defMeaning"><a class="links" href="javascript:void(0)" onclick="top.openFile('roadmap/06qt_surface_2.html');return(false);">3D Curves</a></p>
               </li>
               <li>
                  <p class="para_defMeaning"><a class="links" href="javascript:void(0)" onclick="top.openFile('roadmap/05qt_parts_26.html');return(false);">Extrude</a></p>
               </li>
            </ul>
         </dd>
      </dl>
      <p class="para_topic"></p><a name="qt_mm_3_3a"></a><dl>
         <dt><a name="ndxgenid_roadmap680"></a><p class="defObject"><img align="bottom" src="graphics/commandref/ideas_rule.gif" border="0"><br><img align="bottom" src="graphics/ideas/des_mm_project.gif" border="0"> <b class="uiTerm">Project</b></p>
         </dt>
         <dd>
            <p class="para_defMeaning"><img align="bottom" src="graphics/commandref/nx_rule.gif" border="0"></p>
            <p class="para_defMeaning">To project curves to a sketch:</p>
            <ul class="unmarkedList">
               <li>
                  <p class="para_defMeaning"><img align="bottom" src="graphics/icons/icon-sketch.gif" border="0"> <b class="uiTerm">Sketch</b> (<b class="uiTerm">Feature</b> toolbar)
                  </p>
               </li>
               <li>
                  <p class="para_defMeaning"><img align="bottom" src="graphics/icons/icon_project_2sketch.gif" border="0"> <b class="uiTerm">Project</b> (<b class="uiTerm">Sketch Operations</b> toolbar)
                  </p>
               </li>
            </ul>
            <p class="para_defMeaning">To add non-sketch curves (in the same plane) to the sketch: </p>
            <ul class="unmarkedList">
               <li>
                  <p class="para_defMeaning"><img align="bottom" src="graphics/icons/icon-sketch.gif" border="0"> <b class="uiTerm">Sketch</b> (<b class="uiTerm">Feature</b> toolbar)
                  </p>
               </li>
               <li>
                  <p class="para_defMeaning"><img align="bottom" src="graphics/icons/icon_add_existing_curves.gif" border="0"> <b class="uiTerm">Add Existing Curves</b> (<b class="uiTerm">Sketch Operations</b> toolbar)
                  </p>
               </li>
            </ul>
            <p class="para_defMeaning">To project curves to a surface: </p>
            <ul class="unmarkedList">
               <li>
                  <p class="para_defMeaning"><img align="bottom" src="graphics/icons/icon_project.gif" border="0"> <b class="uiTerm">Project</b> (<b class="uiTerm">Curve</b> toolbar) or <b class="uiTerm">Insert</b> &rarr; <b class="uiTerm">Curve From Curves</b> &rarr; <b class="uiTerm">Project</b></p>
               </li>
            </ul>
         </dd>
      </dl>
      <p class="para_topic"></p><a name="qt_mm_3_3b"></a><dl>
         <dt><a name="ndxgenid_roadmap681"></a><p class="defObject"><img align="bottom" src="graphics/commandref/ideas_rule.gif" border="0"><br><img align="bottom" src="graphics/ideas/des_mm_tangent_curve.gif" border="0"> <img align="bottom" src="graphics/ideas/des_mm_blend_fillet.gif" border="0"> <b class="uiTerm">Tangent Curve</b>, <b class="uiTerm">Blend Fillet</b></p>
         </dt>
         <dd>
            <p class="para_defMeaning"><img align="bottom" src="graphics/commandref/nx_rule.gif" border="0"></p>
            <p class="para_defMeaning"><b class="uiTerm">Insert</b> &rarr; <b class="uiTerm">Curve From Curves</b>  &rarr; <b class="uiTerm">Bridge</b></p>
            <p class="para_defMeaning">Select two curves to bridge. Select tangent or curvature continuity. Slider bars control the strength of the tangency at each end.</p>
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                  <td valign="bottom" align="left" width="100%">
                     <div class="para_tip">
                        <p class="para_tip_body">The 3D <b class="uiTerm">Line</b>, <b class="uiTerm">Arc</b>, and <b class="uiTerm">Spline by Points</b> commands (non-sketch curves) have an <b class="uiTerm">Associativity</b> option which can be useful for creating associative bridge surfaces between existing surfaces.
                        </p>
                     </div>
                  </td>
               </tr>
            </table>
            <p class="para_defMeaning">See also:</p>
            <ul class="unmarkedList">
               <li>
                  <p class="para_defMeaning"><a class="links" href="javascript:void(0)" onclick="top.openFile('roadmap/05qt_parts_15.html');return(false);">Non-sketch curves</a></p>
               </li>
               <li>
                  <p class="para_defMeaning"><a class="links" href="javascript:void(0)" onclick="top.openFile('roadmap/06qt_surface_2.html');return(false);">Creating curves</a></p>
               </li>
            </ul>
         </dd>
      </dl>
      <p class="para_topic"></p><a name="qt_mm_3_3c"></a><dl>
         <dt><a name="ndxgenid_roadmap682"></a><a name="ndxgenid_roadmap683"></a><p class="defObject"><img align="bottom" src="graphics/commandref/ideas_rule.gif" border="0"><br><img align="bottom" src="graphics/ideas/des_mm_intersect.gif" border="0"> <b class="uiTerm">Surface Intersection</b></p>
         </dt>
         <dd>
            <p class="para_defMeaning"><img align="bottom" src="graphics/commandref/nx_rule.gif" border="0"></p>
            <p class="para_defMeaning">To create curves at intersections:</p>
            <p class="para_defMeaning"><b class="uiTerm">Insert</b> &rarr; <b class="uiTerm">Curve From Bodies</b>  &rarr; <b class="uiTerm">Intersect</b></p>
            <p class="para_defMeaning"><b class="uiTerm">Insert</b> &rarr; <b class="uiTerm">Curve From Curves</b>  &rarr; <b class="uiTerm">Combined Projection</b></p>
         </dd>
      </dl>
      <p class="para_topic"></p><a name="qt_mm_3_3d"></a><dl>
         <dt><a name="ndxgenid_roadmap684"></a><p class="defObject"><img align="bottom" src="graphics/commandref/ideas_rule.gif" border="0"><br><img align="bottom" src="graphics/ideas/des_mm_through_pts.gif" border="0"> <img align="bottom" src="graphics/ideas/des_mm_silhouette_curve.gif" border="0"> <b class="uiTerm">Through Points</b>, <b class="uiTerm">Silhouette Curve</b></p>
         </dt>
         <dd>
            <p class="para_defMeaning"><img align="bottom" src="graphics/commandref/nx_rule.gif" border="0"></p>
            <p class="para_defMeaning">To draw curves on surfaces using (U,V) surface locations or existing point locations, use: </p>
            <ul class="unmarkedList">
               <li>
                  <p class="para_defMeaning"><b class="uiTerm">Insert</b> &rarr; <b class="uiTerm">Curve</b>  &rarr; <b class="uiTerm">Curve on Surface</b></p>
               </li>
            </ul>
            <p class="para_defMeaning">To extract silhouette and other curves, use the command: </p>
            <ul class="unmarkedList">
               <li>
                  <p class="para_defMeaning"><b class="uiTerm">Insert</b> &rarr; <b class="uiTerm">Curve From Bodies</b>  &rarr; <b class="uiTerm">Extract</b></p>
               </li>
               <li>
                  <p class="para_defMeaning">Options include: <b class="uiTerm">Isoparametric Curves</b>, <b class="uiTerm">Silhouette Curves</b>, <b class="uiTerm">Isocline Curves</b>, and <b class="uiTerm">Shadow Outline</b></p>
               </li>
            </ul>
         </dd>
      </dl>
      <p class="para_topic"></p>
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      <p class="para_topic">Return to the <a class="links" href="javascript:void(0)" onclick="top.openFile('roadmap/11qt_icon_function_map_2.html');return(false);">Modeling</a> icon panel:
      </p>
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         <li>
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