/*!
\page convert_to_from_quadratic_mesh_page Convert to/from Quadratic Mesh
\n This functionality allows transforming linear meshes (or
sub-meshes) to quadratic and vice versa.
Note that conversion of a sub-mesh most probably will produce a
non-conformal mesh. Elements on the boundary between quadratic and
linear sub-meshes become (or remain) quadratic.
See \ref adding_quadratic_elements_page for more information about
quadratic meshes.
To produce a conversion:
- Select a mesh or a sub-mesh in the Object Browser or in the
Viewer.
- From the Modification menu choose Convert to/from Quadratic
Mesh item , or click "Convert to/from quadratic" button in the
toolbar.
\image html image154.png
"Convert to/from quadratic" button
The following dialog box will appear:
\image html convert.png
- In this dialog box specify:
- If it is necessary to convert a linear mesh to quadratic or a quadratic
mesh to linear. **Convert to bi-quadratic** option does the same as
**Convert to quadratic** except for that TRIA7, QUAD9 and HEXA27
elements are created instead of TRIA6, QUAD8, and HEXA20 elements
respectively. Note that the choice is available only if the selected
mesh (or sub-mesh) contains both quadratic and linear elements, else the
direction of conversion is selected automatically.
- If it is necessary to place **medium nodes** of the quadratic mesh **on the
geometry** (meshed object). This option is relevant for conversion to
quadratic provided that the mesh is based on a geometry (not imported
from file).
\image html image156.gif
Linear mesh (coarse mesh on a torus)
\image html image155.gif
Quadratic mesh
- Click the \b Apply or \b OK button.
See Also a sample TUI Script of a \ref tui_quadratic "Convert to/from quadratic" operation.
*/