def circle(origin_x, origin_y, perim_x, perim_y)
      primitive 'circle ' + format('%g,%g %g,%g', origin_x, origin_y, perim_x, perim_y)
    end
def circle(origin_x, origin_y, perim_x, perim_y)
      primitive 'circle ' + format('%g,%g %g,%g', origin_x, origin_y, perim_x, perim_y)
    end
Draw a circle