.. _deflection_2d_page:

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Deflection 2D
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This quality control criterion consists of calculation of distance between a mesh face gravity corner
and the surface the face discretizes.

*To apply the Deflection 2D quality criterion to your mesh:*

.. |img| image:: ../images/mesh_deflection.png

#. Display your mesh in the viewer.
#. Choose **Controls > Face Controls > Deflection 2D** or click *"Deflection 2D"* |img| button in the toolbar. 


Your mesh will be displayed in the viewer with faces colored according to the applied mesh quality control criterion:

.. image:: ../images/deflection_2d.png
	:align: center


**See Also** a sample TUI Script of a :ref:`tui_deflection_2d` operation.