#!/usr/bin/ruby -w require 'RMagick' i = Magick::ImageList.new i.new_image(250, 250, Magick::HatchFill.new('LightCyan')) gc = Magick::Draw.new # Draw the circle gc.fill_opacity(0) gc.stroke('red').stroke_width(3) gc.circle(125,125, 25, 125) # Draw a little gray circle on the perimeter gc.stroke_width(1) gc.stroke('gray50') gc.circle(25,125,28,128) # Draw a dot at the center gc.fill_opacity(1) gc.circle(125,125, 128,128) # Annotate the dots gc.fill('black') gc.stroke('transparent') gc.text(132,125, "'125,125'") gc.text(32,125, "'25,125'") gc.draw(i) i.write("circle.gif")