netmeme.sh

#!/bin/bash
image_in=$1
if [ -z "$1" ]; then image_in=~/downloads/Nicos_Anastasiades_at_EPP_HQ.jpg; fi
top_text=$2
if [ -z "$2" ]; then
 top_text="CYPRUS'S PRESIDENT DESCRIBES HOW\nHIS COUNTRY SURVIVED"
 top_text="${top_text}\nTHE 2013 FINANCIAL CRISIS"
fi
bottom_text=$3
if [ -z "$3" ]; then
 bottom_text="WE SEIZED ALL FUNDS\nIN EXCESS OF €100,000\n"
 bottom_text="${bottom_text}FROM ALL BANK ACCOUNTS-\n"
 bottom_text="${bottom_text}THE OPPOSITE OF WHAT AMERICA DOES"
fi
image_out=$4
if [ -z "$4" ]; then
 image_out=/tmp/image_out.jpg
fi
# the following sets max dimension to 640
convert -resize 640x640 $image_in /tmp/image_in.jpg
width=$(identify -format '%w' /tmp/image_in.jpg)
height=$(identify -format '%h' /tmp/image_in.jpg)
lineheight=$(echo "$height * .05" | bc)  # pixels = 1/20 height
halfline=$(echo "$lineheight / 2" | bc)
margin=$(echo "$lineheight * .3" | bc)
pointsize=$(echo "$lineheight * .75" | bc)  # points = pixels * .75
pagepoints=$(echo "$pointsize * .75" | bc)  # pagename pointsize
copyright=$(echo "$pointsize * .40" | bc)  # copyright pointsize
convert \
 -geometry $width \
 -font Impact-Regular \
 -background none -fill white -stroke black -strokewidth 1 \
 -pointsize $pointsize -gravity center \
 label:"$top_text" /tmp/top_text.gif
convert \
 -geometry $width \
 -font Impact-Regular \
 -background none -fill white -stroke black -strokewidth 1 \
 -pointsize $pointsize -gravity center \
 label:"\"$bottom_text\"" /tmp/bottom_text.gif
offset=$(echo $(identify -format %h /tmp/bottom_text.gif) + $halfline | bc)
convert \
 -font Impact-Regular \
 -background none -fill gray57 -stroke gray13 -strokewidth 1 \
 -pointsize $pagepoints -gravity west \
 label:"FB.com/USACutup" /tmp/pagename.gif
convert \
 -font Impact-Regular \
 -background none -fill gray57 -stroke gray13 -strokewidth 1 \
 -pointsize $copyright -gravity west \
 label:"jc.unternet.net" /tmp/copyright.gif
composite -geometry +0+$margin -gravity north /tmp/top_text.gif \
 /tmp/image_in.jpg \
 $image_out
composite -geometry +0+$margin -gravity south /tmp/bottom_text.gif \
 $image_out $image_out
composite -geometry +$margin+$offset -gravity southwest /tmp/pagename.gif \
 $image_out $image_out
composite -geometry +1+1 -gravity southeast /tmp/copyright.gif \
 $image_out $image_out
echo Netmeme was written to $image_out. >&2