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|
{ pkgs, ... }:
pkgs.writers.writeDashBin "generate-wallpaper" ''
set -euf
# usage: getimg FILENAME URL
fetch() {
echo "fetch $1"
curl -LsS -z "$1" -o "$1" "$2"
}
# usage: check_type FILENAME TYPE
check_type() {
if ! file -ib "$1" | grep -q "^$2/"; then
echo "$1 is not of type $2" >&2
rm "$1"
return 1
fi
}
# check if file exists and fetch only if missing
fetch_once() {
name=$1
url=$2
test -e "$name" || fetch "$name" "$url"
}
fetch_older_min() {
min=$1
name=$2
url=$3
if ! test "$(find $name -mmin -$min)"; then
fetch "$name" "$url"
fi
}
fetch_older_days() {
days=$1
name=$2
url=$3
if ! test "$(find $name -mtime -$days)"; then
fetch "$name" "$url"
fi
}
# usage: needs_rebuild DST SRC...
needs_rebuild() {
a="$1"
shift
if ! test -e "$a"; then
#echo " $a does not exist" >&2
result=0
else
result=1
for b; do
if check_type "$b" image; then
if test "$b" -nt "$a"; then
#echo " $b is newer than $a" >&2
result=0
fi
fi
done
fi
#case $result in
# 0) echo "$a needs rebuild" >&2;;
#esac
return $result
}
get_neo_url() {
url=$1
curl -Ss "$url" | grep '3600 x 1800' | sed 's/.*href="\([^"]*\)".*/\1/'
}
main() {
cd "$working_dir"
# fetch source images in parallel
fetch_once nightmap-raw.jpg \
'https://eoimages.gsfc.nasa.gov/images/imagerecords/144000/144898/BlackMarble_2016_3km.jpg' &
fetch_once daymap-raw.tif \
'https://eoimages.gsfc.nasa.gov/images/imagerecords/57000/57752/land_shallow_topo_8192.tif' &
fetch_once mercury-raw.svg \
'https://upload.wikimedia.org/wikipedia/commons/2/2e/Mercury_symbol.svg' &
fetch_once venus-raw.svg \
'https://upload.wikimedia.org/wikipedia/commons/6/66/Venus_symbol.svg' &
fetch_once mars-raw.svg \
'https://upload.wikimedia.org/wikipedia/commons/b/b7/Mars_symbol.svg' &
fetch_once jupiter-raw.svg \
'https://upload.wikimedia.org/wikipedia/commons/2/26/Jupiter_symbol.svg' &
fetch_once saturn-raw.svg \
'https://upload.wikimedia.org/wikipedia/commons/7/74/Saturn_symbol.svg' &
fetch_once uranus-raw.svg \
'https://upload.wikimedia.org/wikipedia/commons/f/f1/Uranus_symbol.svg' &
fetch_once neptune-raw.svg \
'https://upload.wikimedia.org/wikipedia/commons/4/47/Neptune_symbol.svg' &
fetch_once krebs-raw.svg \
'https://raw.githubusercontent.com/krebs/painload/master/cholerab/bling/krebs_aquarium.svg' &
fetch_older_min 720 ice-raw.jpg $(get_neo_url \
'https://neo.sci.gsfc.nasa.gov/view.php?datasetId=NISE_D') &
fetch_older_days 3 snow-raw.jpg $(get_neo_url \
'https://neo.sci.gsfc.nasa.gov/view.php?datasetId=MOD10C1_E_SNOW') &
fetch_older_days 7 chlora-raw.jpg $(get_neo_url \
'https://neo.sci.gsfc.nasa.gov/view.php?datasetId=MY1DMM_CHLORA') &
fetch_older_days 7 fire-raw.jpg $(get_neo_url \
'https://neo.sci.gsfc.nasa.gov/view.php?datasetId=MOD14A1_E_FIRE') &
# regular fetches
fetch marker.json.tmp "$marker_url"
if [ -s marker.json.tmp ]; then
mv marker.json.tmp marker.json
fi
fetch sun-raw.jpg 'https://sdo.gsfc.nasa.gov/assets/img/latest/latest_512_0171.jpg' &
wait
# fetch clouds if they are older than 3h
if ! test "$(find clouds-raw.png -mmin -180)"; then
${pkgs.nomads-cloud}/bin/nomads-cloud clouds-raw.png
fi
in_size=3600x1800
xplanet_out_size=3200x2500
out_geometry=3200x1800+0+350
for raw in \
nightmap-raw.jpg \
daymap-raw.tif \
chlora-raw.jpg \
clouds-raw.png \
;
do
normal=''${raw%-raw.*}.png
if needs_rebuild $normal $raw; then
echo "make $normal; normalize $raw" >&2
convert $raw -scale $in_size $normal
fi
done
# remove snow from ice map
if needs_rebuild ice.png ice-raw.jpg; then
convert ice-raw.jpg -fuzz 20% -fill black -opaque white -colorspace gray -blur 0x6 -scale "$in_size" ice.png
fi
if needs_rebuild snow.png snow-raw.jpg; then
convert snow-raw.jpg -fuzz 20% -fill '#DEDEDE' -opaque white -scale "$in_size" snow.png
fi
# make fire more red
if needs_rebuild fire.png fire-raw.jpg; then
convert fire-raw.jpg -fuzz 20% -fill '#ef840c' -opaque white -scale "$in_size" fire.png
fi
# cut out sun with alpha transparency
if needs_rebuild sun.png sun-raw.jpg; then
convert sun-raw.jpg \
\( +clone -colorspace HSB -fill white -draw "circle 256,256 256,54" -separate -delete 0,1 \) \
-compose copyopacity -composite -crop 512x472+0+20 -scale "100x100" sun.png
fi
if needs_rebuild krebs.png krebs-raw.svg; then
inkscape -z -e krebs.png -w 16 -h 16 krebs-raw.svg
fi
# -- Planets --
for planet in mercury venus mars jupiter saturn uranus neptune; do
if needs_rebuild "$planet".png "$planet"-raw.svg; then
sed -i 's/#000/#FE8019/g' "$planet"-raw.svg
inkscape -z -e "$planet".png -w 40 -h 40 "$planet"-raw.svg
fi
done
# -- Daymap --
# merge with water chlora layer
if needs_rebuild daymap-final.png daymap.png fire.png snow.png ice.png chlora.png; then
convert daymap.png fire.png -compose lighten -composite daymap-1.png
convert daymap-1.png ice.png -compose lighten -composite daymap-2.png
convert daymap-2.png snow.png -compose lighten -composite daymap-3.png
convert daymap-3.png chlora.png -compose lighten -composite daymap-final.png
fi
# -- Nightmap --
if needs_rebuild nightmap-final.png nightmap.png fire.png snow.png ice.png chlora.png; then
convert nightmap.png fire.png -compose lighten -composite nightmap-1.png
convert nightmap-1.png \( -fill black -colorize 70% ice.png \) -compose lighten -composite nightmap-2.png
convert nightmap-2.png \( -fill black -colorize 70% snow.png \) -compose lighten -composite nightmap-3.png
convert nightmap-3.png \( -fill black -colorize 70% chlora.png \) -compose lighten -composite nightmap-final.png
fi
# create marker file from json
if [ -s marker.json ]; then
jq -r 'to_entries[] | @json "\(.value.latitude) \(.value.longitude) image=krebs.png"' marker.json > marker_file
echo 'position=sun image=sun.png' >> marker_file
echo 'position=moon image=moon.png' >> marker_file
echo 'position=mercury image=mercury.png' >> marker_file
echo 'position=venus image=venus.png' >> marker_file
echo 'position=mars image=mars.png' >> marker_file
echo 'position=jupiter image=jupiter.png' >> marker_file
echo 'position=saturn image=saturn.png' >> marker_file
echo 'position=uranus image=uranus.png' >> marker_file
echo 'position=neptune image=neptune.png' >> marker_file
fi
# generate moon
xplanet -body moon --num_times 1 -origin earth \
--transpng moon.png --geometry 50x50 \
-config ${pkgs.writeText "moon.config" ''
[moon]
shade=10
''}
# rebuild every time to update shadow
xplanet --num_times 1 --geometry $xplanet_out_size \
--output xplanet-output.png --projection merc \
-config ${pkgs.writeText "xplanet.config" ''
[earth]
"Earth"
map=daymap-final.png
night_map=nightmap-final.png
cloud_map=clouds.png
cloud_threshold=1
cloud_gamma=10
shade=15
''}
xplanet --num_times 1 --geometry $xplanet_out_size \
--output xplanet-krebs-output.png --projection merc \
-config ${pkgs.writeText "xplanet-krebs.config" ''
[earth]
"Earth"
map=daymap-final.png
night_map=nightmap-final.png
cloud_map=clouds.png
cloud_threshold=1
cloud_gamma=10
marker_file=marker_file
shade=15
''}
# trim xplanet output
if needs_rebuild realwallpaper.png xplanet-output.png; then
convert xplanet-output.png -crop $out_geometry \
realwallpaper-tmp.png
mv realwallpaper-tmp.png realwallpaper.png
fi
if needs_rebuild realwallpaper-krebs.png xplanet-krebs-output.png; then
convert xplanet-krebs-output.png -crop $out_geometry \
realwallpaper-krebs-tmp.png
mv realwallpaper-krebs-tmp.png realwallpaper-krebs.png
mkdir -p archive
convert realwallpaper-krebs.png archive/"$(date -Is)".jpg
fi
}
main "$@"
''
|
