Mlpost.ShapesRectangles, Circles, etc.
Various Basic Geometric Shapes
round_rect w h rx ry returns a rectangle of width w and height h with rounded corners. The rounded corners are arcs of an ellipse of radii rx and ry. rx (resp. ry) should be positive and smaller than w/2 (resp. h/2).
ellipse rx ry returns an ellipse of great axis rx and small axis ry. The ellipse is centered on the origin and aligned with the x axis.
See Box.patatoid.
See Box.patatoid2.