5 \n \b Taper mesh quality criterion represents the ratio of the areas
6 of two triangles separated by a diagonal. So it can be calculated only
7 for elements consisting of 4 nodes.
9 <b><center>JA=0.25 * (A1 + A2 + A3 + A4)
10 <br> TAPER= MAX(|A1/JA - 1|, |A2/JA - 1|, |A3/JA - 1|, |A4/JA - 1|)</center></b>
12 <br><em>To apply the Taper quality criterion to your mesh:</em>
15 <li>Display your mesh in the viewer.</li>
17 <li>Choose <b>Controls > Face Controls > Taper</b> or click
18 <em>"Taper"</em> button in the toolbar.
20 \image html image36.png
21 <center><em>"Taper" button</em></center>
23 Your mesh will be displayed in the viewer with its elements colored
24 according to the applied mesh quality control criterion:
26 \image html image90.jpg
30 <br><b>See Also</b> a sample TUI Script of a
31 \ref tui_taper "Taper quality control" operation.