3 \page extrusion_page Extrusion
5 \n Extrusion is used to build mesh elements of plus one
6 dimension than the input ones. Any node, segment or 2D element can be
7 extruded. Each type of elements has a corresponding type of extruded elements:
9 <tr><td><b>Extruded element</b></td><td><b> Result element </b></td></tr>
10 <tr><td>Node </td><td> Segment </td></tr>
11 <tr><td>Segment </td><td> Quadrilateral </td></tr>
12 <tr><td>Triangle </td><td> Pentahedron </td></tr>
13 <tr><td>Quadrilateral </td><td> Hexahedron </td></tr>
14 <tr><td>Polygon </td><td> Polyhedron </td></tr>
15 <tr><td>Hexagonal polygon </td><td> Hexagonal prism </td></tr>
18 <em>To use extrusion:</em>
20 <li>From the \b Modification menu choose the \b Extrusion item or click
21 <em>"Extrusion"</em> button in the toolbar.
24 \image html image91.png
25 <em>"Extrusion" button</em>
28 The following dialog common for line and planar elements will appear:
30 \image html extrusionalongaline1.png
32 \image html extrusionalongaline2.png
38 <li>Select the type of elements which will be extruded (nodes, 1D or
40 <li>Specify the IDs of the elements which will be extruded by one
43 <li><b>Select the whole mesh, submesh or group</b> activating this
45 <li>Choose mesh elements with the mouse in the 3D Viewer. It is
46 possible to select a whole area with a mouse frame.</li>
47 <li>Input the element IDs directly in <b>ID Elements</b>
48 field. The selected elements will be highlighted in the viewer.</li>
49 <li>Apply Filters. <b>Set filter</b> button allows to apply a
50 filter to the selection of elements. See more about filters in
51 the \ref filtering_elements "Selection filters" page.</li>
54 <li>If the <b>Extrude to Distance</b> radio button is selected</li>
56 <li>specify the distance at which the elements will be extruded.</li>
58 <li>If the <b>Extrude Along Vector</b> radio button is selected</li>
60 <li>specify the coordinates of the vector along which the elements
61 will be extruded, or select the face (the normal to the face will
62 define the vector),</li>
63 <li>specify the distance of extrusion along the vector.</li>
65 <li>Specify the number of steps.</li>
66 <li>If you activate <b>Generate Groups</b> check-box, the <em>result elements</em>
67 created from <em>extruded elements</em> contained in groups will be
68 included into new groups named by pattern "<old group
69 name>_extruded" and "<old group name>_top". For example if an
70 extruded quadrangle is included in \a Group_1 group then result
71 hexahedra will be included in \a Group_1_extruded group and a
72 quadrangle created at the "top" of extruded mesh will
73 be included in \a Group_1_top group. <br>This check-box is active
74 only if there are some groups in the mesh.</li>
77 <li>Click \b Apply or <b> Apply and Close</b> button to confirm the operation.</li>
80 \image html image77.jpg "The mesh with an edge selected for extrusion"
82 \image html image76.jpg "The mesh with extruded edge"
84 <br><b>See Also</b> a sample TUI Script of an
85 \ref tui_extrusion "Extrusion" operation.