The model generates a bezier surface using a grid of 4 rows of 6 control points input via the spreadsheet. Each row is formed into a bezier having from 1 to 6 Control Points (slider control). The resulting 4 beziers determine the surface shape and boundary outline that may be rectangular, triangular, waist-like, or bulbous.
Toggles control the display of points, the 4 bezier curves and the resulting surface.
