Taper

Taper mesh quality criterion represents the ratio of the areas of two triangles separated by a diagonal within a quadrilateral face.

JA = 0.25 * (A1 + A2 + A3 + A4)
TAPER = MAX(|A1/JA - 1|, |A2/JA - 1|, |A3/JA - 1|, |A4/JA - 1|)

To apply the Taper quality criterion to your mesh:

1. Display your mesh in the viewer.

2. Choose Controls > Face Controls > Taper or click "Taper" button in the toolbar.

   
   "Taper" button

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

   

See Also a sample TUI Script of a Taper quality control operation.