Contents

#!/usr/bin/env ruby
require 'zpng'
include ZPNG

img = Image.new(File.join(File.dirname(__FILE__),"http.png"))

puts "[.] original:"
puts img.to_s
puts

img.width.times do |x|
  img[x,0] = (x % 2 == 0) ? Color::WHITE : Color::BLACK
end

puts "[.] modified:"
puts img.to_s

File.open("http-modified.png","wb") do |f|
  f << img.export
end

Version data entries

20 entries across 20 versions & 1 rubygems

Version	Path
zpng-0.4.3	samples/modify.rb
zpng-0.4.2	samples/modify.rb
zpng-0.4.1	samples/modify.rb
zpng-0.4.0	samples/modify.rb
zpng-0.3.4	samples/modify.rb
zpng-0.3.3	samples/modify.rb
zpng-0.3.2	samples/modify.rb
zpng-0.3.1	samples/modify.rb
zpng-0.3.0	samples/modify.rb
zpng-0.2.5	samples/modify.rb
zpng-0.2.4	samples/modify.rb
zpng-0.2.3	samples/modify.rb
zpng-0.2.2	samples/modify.rb
zpng-0.2.1	samples/modify.rb
zpng-0.2.0	samples/modify.rb
zpng-0.1.2	samples/modify.rb
zpng-0.1.1	samples/modify.rb
zpng-0.1.0	samples/modify.rb
zpng-0.0.2	samples/modify.rb
zpng-0.0.1	samples/modify.rb