PNG is an almost-pure-ruby PNG library. It lets you write a PNG without any C libraries.
Very simple interface.
Outputs simple PNG files with ease.
Basic PNG reader as well (someday it might do compositing and the like!).
Almost pure ruby, does require a compiler.
require 'png' canvas = PNG::Canvas.new 200, 200 # Set a point to a color canvas[100, 100] = PNG::Color::Black # draw an anti-aliased line canvas.line 50, 50, 100, 50, PNG::Color::Blue png = PNG.new canvas png.save 'blah.png'
+ C compiler + RubyInline + Hoe
+ sudo gem install -y png
(The MIT License)
Copyright © 2006-2007 Ryan Davis, Eric Hodel, Zen Spider Software
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the “Software”), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
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