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41 lines
1.2 KiB
ReStructuredText
41 lines
1.2 KiB
ReStructuredText
.. _aspect_ratio_page:
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************
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Aspect Ratio
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************
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The **Aspect Ratio** quality criterion for mesh elements reveals the degree of conformity of a mesh element to the regular element of its type (with all edges having the same length).
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* The **Aspect Ratio** of a **triangle** 2D element consisting of 3 nodes is calculated by the formula:
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.. image:: ../images/formula4.png
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:align: center
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* The **Aspect Ratio** of a **quadrangle** 2D element consisting of 4 nodes is calculated using The Verdict Geometric Quality Library available within VTK. The calculation formula is:
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.. image:: ../images/formula5.png
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:align: center
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**To apply the Aspect Ratio quality criterion to your mesh:**
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#. Display your mesh in the viewer.
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#. Choose **Controls > Face Controls > Aspect Ratio** or click **Aspect Ratio** button in the toolbar.
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.. image:: ../images/image37.png
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:align: center
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.. centered::
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Aspect Ratio button
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Your mesh will be displayed in the viewer with its elements colored according to the applied mesh quality control criterion:
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.. image:: ../images/image94.jpg
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:align: center
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**See Also** a sample TUI Script of an :ref:`tui_aspect_ratio` operation.
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