Autodesk 663B1-05A111-1001 User Guide - Page 280

12 | Basics Menus Reference > Modify > Convert > NURBS to Polygons Per Span U = 20 Per Span V = 20 Specifying the secondary tessellation controls If Use Chord Height or Use Chord Height Ratio is turned on, you can set a specific value for both the Chord Height and the Chord Height Ratio. A value greater than 0 results in fewer polygon vertices if the ratio on the curve is greater than the current value. For example, the default value, 0.1, means that the height must be larger than 1/10 of the chord length before additional edit points are created. Turn Edge Swap on to produce triangles with the opposite orientation for the final quadrilateral. Count Set the Tessellation Method to Count to display the following slider. Count slider Use the Count slider to determine how many polygons the surface can be tessellated into. See the following examples. Count value = 525 Count value = 150 Basics 280 Control Points This tessellation method converts the NURBS model to polygons while matching the CVs of the original NURBS surface. There are no other options for this operation.