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#! /usr/local/bin/ruby -w
require 'RMagick'
imgl = Magick::ImageList.new
imgl.new_image(500,80, Magick::HatchFill.new('white','lightcyan2'))
gc = Magick::Draw.new
# Draw 5-pixel wide line
gc.stroke('LightPink')
gc.stroke_width(5)
gc.line(10,30, 130,30)
# Draw 10-pixel wide line
gc.stroke('LightSkyBlue2')
gc.stroke_width(10)
gc.line(130,30, 230,30)
# Draw 20-pixel wide line
gc.stroke('GreenYellow')
gc.stroke_width(20)
gc.line(230,30,370,30)
# Draw 40-pixel wide line
gc.stroke('MediumOrchid2')
gc.stroke_width(40)
gc.line(370,30,490,30)
# Draw 1-pixel wide line through the center
gc.stroke('black')
gc.stroke_width(1)
gc.line(10,30,490,30)
# Annotate
gc.font_weight(Magick::NormalWeight)
gc.font_style(Magick::NormalStyle)
gc.fill('black')
gc.stroke('transparent')
gc.text(60,70,"'5'")
gc.text(180,70,"'10'")
gc.text(300,70,"'20'")
gc.text(420,70,"'40'")
gc.draw(imgl)
imgl.border!(1,1,"lightcyan2")
imgl.write('stroke_width.gif')
exit
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