Draws an ellipse based on the turtle heading, turtle position, and given inputs.
The center-point of the ellipse is the turtle's current position.
ELLIPSE does not move the turtle.
The size and shape of the ellipse is based on the
crosswise.semiaxis input is the distance from the turtle to the ellipse in the direction perpendicular turtle's current heading.
inline.semiaxis input is the distance from the turtle to the ellipse in the direction which the turtle is currently heading.
; a 2D example ELLIPSE 100 200 CLEARSCREEN ELLIPSE 50 50 CLEARSCREEN ELLIPSE 50 50
; a 3D example PERSPECTIVE REPEAT 18 [ELLIPSE 100 200 RIGHTROLL 10]