[R] plotting primatives, ellipses, dots, radial coordinates etc.

[Rex_Bryan@urscorp.com]

Is there a library in R that defines plotting primatives such as drawing an
ellipse, drawing a colored dot, or drawing a line with a radius and angle?
More complex figures would be cool too like defining a color-filled polygon
as an object an placing it at any arbitrary position (x,y,scalex, scaled and
rotated).
Rex