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).

rectangle w h returns a rectangle of width w and height h.

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.

• parameter fill

  the color with which to fill the ellipse ; if no color is provided, it is not filled.

• parameter stroke

  the color with which the ellipse's outline shall be drawn ; default is black.

• parameter thickness

  the thickness of the pen used to draw the outline ; 1. is default

See Box.patatoid.

See Box.patatoid2.