bezierPatch
Create a cubic bezier patch from 4 segments. The control points of the segments are used in row-wise fashion
Create a bezier patch from a closed shape contour (with 4 segments).
Parameters
alpha
control for linearity, default is 1.0/3.0
Create a bezier patch from 4 corners
Parameters
corners
a list of corners from which to create the patch
alpha
control for linearity, default is 1.0/3.0