kakukaku

kakukaku

#!/bin/bash

set -euC
# set -o pipefail

# exec 5>> /tmp/xmosh/shell-script-debug.out
# BASH_XTRACEFD="5"
# PS4='$LINENO: '
# set -x

if [ "$#" -lt 2 ]
then
  echo 'kakukaku <SOURCE_IMAGE> <OUTPUT_GIF>'
  exit 1
fi


image="$1"
dest="$2"


wd="$(mktemp -d)"
kaku="${wd}/kaku.png"


function cleanup () {
  rm -rf "$wd"
}
trap cleanup EXIT

function calc () {
  local ex="$*"

  echo "$ex" | bc | sed 's/\..*//'
}

command -v caching || function caching () {
  "${@}"
}


wh="$(identify -format '%w %h' "$image")"
w="${wh% *}"
h="${wh#* }"

read -r -a reko < <(
  caching aws rekognition detect-faces \
    --image-bytes "fileb://${image}" |\
    jq --raw-output \
    '.FaceDetails[0]|.BoundingBox|[.Left,.Top,.Width,.Height]|join(" ")'
)


fx="$( calc "${reko[0]} * ${w}" )"
fy="$( calc "${reko[1]} * ${h}" )"
fw="$( calc "${reko[2]} * ${w}" )"
fh="$( calc "${reko[3]} * ${h}" )"
d="$( calc "$fh * 0.06" )"


convert "$image" \
  \( -clone 0 -crop "${fw}x${fh}+${fx}+${fy}" \) \
  \( -clone 0-1 -compose Dst -composite \) \
  -delete 0 +swap \
  -geometry "+$(( fx ))+$(( fy - d ))" -compose Over -composite \
  "$kaku"

convert -delay 5 -loop 0 "$image" "$kaku" "$dest"

command -v chrysoberyl && chrysoberyl @@views 2 @@ "$image" "$dest"