/*! \page extrusion_page Extrusion \n Extrusion is used to build mesh elements of plus one dimension than the input ones. Boundary elements around elements of plus one dimension are additionally created. All created elements can be automatically grouped. Extrusion can be used to create a \ref extrusion_struct "structured mesh from scratch". \image html extrusion_box.png "If you extruded e.g. several quadrangles, you get exactly same mesh as if you meshed a geometrical box (except that the initial quadrangles can be incorrectly oriented)"

Any node, segment or 2D element can be extruded. Each type of elements is extruded into a corresponding type of result elements:
Extruded element Result element
Node Segment
Segment Quadrilateral
Triangle Pentahedron
Quadrilateral Hexahedron
Polygon Polyhedron
Hexagonal polygon Hexagonal prism
To use extrusion:

  1. From the \b Modification menu choose the \b Extrusion item or click "Extrusion" button in the toolbar.
    \image html image91.png "Extrusion" button
    The following dialog common for node, segments and faces will appear: \image html extrusionalongaline1.png \image html extrusionalongaline2.png \image html extrusionalongaline3.png
  2. In this dialog:
  3. Click \b Apply or Apply and Close button to confirm the operation.
\anchor extrusion_struct

Example: creation of a structured mesh from scratch

\image html image75.jpg "A node is extruded into a line of segments"
\image html image76.jpg "The line of segments is extruded into a quadrangle mesh"
\image html image77.jpg "The quadrangle mesh is revolved into a hexahedral mesh"
See Also a sample TUI Script of an \ref tui_extrusion "Extrusion" operation. */