#!/usr/bin/ruby -w require 'RMagick' i = Magick::ImageList.new i.new_image(600, 200) { self.background_color = 'white' } gc = Magick::Draw.new gc.stroke('blue').stroke_width(3) gc.fill_opacity(0) gc.polyline( 25,187.5, 75,187.5, 75, 162.5, 125,162.5, 125,187.5, 175,187.5, 175,125, 225,125, 225,187.5, 275,187.5, 275,87.5, 325, 87.5, 325,187.5, 375,187.5, 375,50, 425, 50, 425,187.5, 475,187.5, 475,12.5, 525, 12.5, 525,187.5, 575,187.5) gc.fill_opacity(0) gc.stroke('lavender') gc.rectangle(0,0, 599, 199) gc.draw(i) #i.display i.write("polyline.gif")