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Contents
#!/usr/bin/env ruby -w
require 'rmagick'
# Demonstrate the Image#cycle_colormap method
balloons = Magick::Image.read('images/Hot_Air_Balloons.jpg').first
balloons = balloons.quantize(256, Magick::RGBColorspace)
jump = balloons.colors / 10
animation = Magick::ImageList.new
animation[0] = balloons
5.times { animation << animation.cycle_colormap(jump) }
4.times { animation << animation.cycle_colormap(-jump) }
animation.delay = 20
animation.iterations = 10_000
# animation.animate
animation.write('cycle_colormap.gif')
exit
Version data entries
6 entries across 6 versions & 1 rubygems