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require 'rmagick'
img = Magick::Image.read('images/Flower_Hat.jpg').first
legend = Magick::Draw.new
legend.stroke = 'transparent'
legend.fill = 'white'
legend.gravity = Magick::SouthGravity
frames = Magick::ImageList.new
implosion = 0.25
8.times do
frames << img.implode(implosion)
legend.annotate(frames, 0, 0, 10, 20, sprintf('% 4.2f', implosion))
frames.alpha(Magick::DeactivateAlphaChannel)
implosion -= 0.10
end
7.times do
implosion += 0.10
frames << img.implode(implosion)
legend.annotate(frames, 0, 0, 10, 20, sprintf('% 4.2f', implosion))
frames.alpha(Magick::DeactivateAlphaChannel)
end
frames.delay = 10
frames.iterations = 0
puts 'Producing animation...'
frames.write('implode.gif')
exit
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