bikeshed.zsh

# Makes an image (namely this one: http://ksdenvironmental.co.uk/wp-content/uploads/2014/12/icon_shed.jpg) flash red and blue
# Creates a slack-friendly gif

#!/bin/bash
convert "$1" -fuzz '14%' -transparent white \
        -gravity Center -crop 140x120-0-1 +repage \
        -grayscale rec709luma \
        \( +clone +level-colors red, \) \( -grayscale rec709luma +clone +level-colors blue, \) \
        -delete 0 \
        -morph 2 -set delay 15 \
        -duplicate 1,-2-1 \
        -resize 70 \
        /tmp/image.gif
gifsicle --colors 20 -O3 /tmp/image.gif -o $2