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89 <p>Extrusion is a type of surface meshing by generation from discretized
90 lines. It is used to build mesh elements of plus one dimension than the
91 swept ones. Each swept 1D element produces one or more quadrangles (or
92 triangles if one node of a rotated element lays on the revolution axis).</p>
96 <p class=TODO>To use extrusion:</p>
98 <p class=TODO> </p>
100 <p class="whs1">1. From the <span style="font-weight: bold;"><B>Modification
101 </B></span>menu choose the <span style="font-weight: bold;"><B>Extrusion </B></span>item
102 or click <img src="image91.gif" width="27px" height="24px" border="0" class="img_whs2"> button in the toolbar. The following dialog box
105 <p class="whs1"> </p>
107 <p class="whs1"><img src="pics/extrusionalongaline1.png" x-maintain-ratio="TRUE" width="411px" height="309px" border="0" class="img_whs3"> <img src="pics/extrusionalongaline2.png" x-maintain-ratio="TRUE" width="411px" height="309px" border="0" class="img_whs3"></p>
109 <p class="whs1"> </p>
111 <p class="whs1">2. In this dialog box you should select </p>
113 <ul type="disc" class="whs4">
115 <li class=kadov-p><p class="whs1">the type of elements
116 which will be extruded (1D or 2D),</p></li>
118 <li class=kadov-p><p class="whs1">specify the IDs of
119 the elements which will be extruded by selecting them in the 3D viewer
120 or select the whole mesh or submesh,</p></li>
122 <li class=kadov-p><p class="whs1">specify the vector
123 along which the elements will be extruded,</p></li>
125 <li class=kadov-p><p class="whs1">number of steps</p></li>
128 <p class="whs1"> </p>
130 <p class="whs1">3. Click the <span style="font-weight: bold;"><B>Apply
131 </B></span>or <span style="font-weight: bold;"><B>OK </B></span>button.</p>
134 style="margin-left: 40px;"> </p>
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149 <p class=TODO> </p>
151 <p> <span style="font-weight: bold;"><B>See
152 Also</B></span> a sample TUI Script of an <a href="modifying_meshes.htm#bookmark9">Extrusion</a>
153 operation. </p>
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