background_color = #ffffff
stroke_circle = function(r)
{
put fill_circle(r + line_width * 0.5)
color = background_color
put fill_circle(r - line_width * 0.5)
}
{
mid = (0.5w, 0.5h)
put stroke_circle(0.45h) at mid
put stroke_circle(0.1h) at mid + (-0.1w, -0.1w)
put stroke_circle(0.1h) at mid + ( 0.1w, -0.1w)
put fill_circle(0.05h) at mid + (-0.1w, -0.08w)
put fill_circle(0.05h) at mid + ( 0.1w, -0.08w)
put stroke_circle(0.15h) at mid + (0w, 0.1w)
}
Fun thing to try: