Table of Contents
Crystal libraries for reading (and writing) png and gif images.
StumpyPNG
Crystal library for reading and writing png files, with support for Adam7 interlacing and all kinds of color types.
Source code on Github: stumpycr/stumpy_png
include StumpyPNG canvas = Canvas.new(256, 256) (0...255).each do |x| (0...255).each do |y| # RGBA.from_rgb_n(values, bit_depth) is an internal helper method # that creates an RGBA object from a rgb triplet with a given bit depth color = RGBA.from_rgb_n(x, y, 255, 8) canvas[x, y] = color end end StumpyPNG.write(canvas, "rainbow.png")
StumpyGIF
Crystal library for creating (animated) gif files.
Source code on Github: stumpycr/stumpy_gif
