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ReStructuredText
39 lines
1.0 KiB
ReStructuredText
.. _diagonal_inversion_of_elements_page:
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***********************************
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Diagonal inversion of two triangles
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***********************************
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In MESH you can inverse the diagonal (edge) of a pseudo-quadrangle
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formed by two neighboring triangles with one common edge.
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*To inverse the diagonal:*
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#. From the **Modification** menu choose the **Diagonal inversion** item or click *"Diagonal Inversion"* |img| button in the toolbar.
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.. |img| image:: ../images/image70.png
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The following dialog box shall appear:
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.. image:: ../images/diagonalinversion.png
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:align: center
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#. Enter IDs of nodes forming the required edge in the **Edge** field (the node IDs must be separated by dashes) or select this edge in the 3D viewer.
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#. Click the **Apply** or **Apply and Close** button.
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.. image:: ../images/image38.jpg
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:align: center
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.. centered::
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The selected edge
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.. image:: ../images/image36.jpg
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:align: center
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.. centered::
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The inverted edge
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**See Also** a sample TUI Script of a :ref:`tui_diagonal_inversion` operation.
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