実行にはImageMagick, zshのインストールが必要です.

230.gif

april-fool-2018.sh

#!/bin/zsh

convert 230.gif -coalesce 230-%02d.gif

for index in $(seq -w 0 53)
do
  echo ${index}
  convert 230-${index}.gif -fill black -colorize 100 230-black-${index}.gif
  convert 230-black-${index}.gif -sample 152x256 230-black-large-${index}.gif
  composite 230-black-large-${index}.gif wave-layer-1.png -geometry +52+30 wave-anime-${index}.png
  composite wave-layer-3.png wave-anime-${index}.png wave-anime-${index}.png
  composite wave-layer-4.png wave-anime-${index}.png wave-anime-${index}.png
  composite wave-layer-5.png wave-anime-${index}.png wave-anime-${index}.png
done

convert -delay 5 wave-anime-{00..53}.png wave-anime.gif
convert -delay 4 wave-anime-{00..53}.png wave-anime-delay-4.gif
convert -delay 3 wave-anime-{00..53}.png wave-anime-delay-3.gif
convert -delay 2 wave-anime-{00..53}.png wave-anime-delay-2.gif
convert -delay 1 wave-anime-{00..53}.png wave-anime-delay-1.gif
convert -delay 10 wave-anime-{00..53}.png wave-anime-delay-10.gif

composite wave-layer-3.png wave-layer-1.png wave-kyomu.png
composite wave-layer-4.png wave-kyomu.png wave-kyomu.png
composite wave-layer-5.png wave-kyomu.png wave-kyomu.png

wave-layer-1.png

wave-layer-3.png

wave-layer-4.png

wave-layer-5.png