maintain realwallpaper in stockholm
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lassulus
parent
02350fd5ec
commit
293a82ad3b
@ -77,7 +77,190 @@ let
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serviceConfig = {
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Type = "simple";
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ExecStart = "${pkgs.realwallpaper}/realwallpaper.sh";
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ExecStart = pkgs.writeDash "generate-wallpaper" ''
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set -xeuf
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# usage: getimg FILENAME URL
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fetch() {
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echo "fetch $1"
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curl -LsS -z "$1" -o "$1" "$2"
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}
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# usage: check_type FILENAME TYPE
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check_type() {
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if ! file -ib "$1" | grep -q "^$2/"; then
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echo "$1 is not of type $2" >&2
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rm "$1"
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return 1
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fi
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}
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# usage: image_size FILENAME
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image_size() {
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identify "$1" | awk '{print$3}'
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}
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# usage: make_mask DST SRC MASK
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make_layer() {
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if needs_rebuild "$@"; then
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echo "make $1 (apply mask)" >&2
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convert "$2" "$3" -alpha off -compose copy_opacity -composite "$1"
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fi
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}
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# usage: flatten DST HILAYER LOLAYER
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flatten() {
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if needs_rebuild "$@"; then
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echo "make $1 (flatten)" >&2
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composite "$2" "$3" "$1"
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fi
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}
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# usage: needs_rebuild DST SRC...
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needs_rebuild() {
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a="$1"
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shift
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if ! test -e "$a"; then
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#echo " $a does not exist" >&2
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result=0
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else
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result=1
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for b; do
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if test "$b" -nt "$a"; then
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#echo " $b is newer than $a" >&2
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result=0
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fi
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done
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fi
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#case $result in
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# 0) echo "$a needs rebuild" >&2;;
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#esac
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return $result
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}
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main() {
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cd ${cfg.workingDir}
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# fetch source images in parallel
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fetch nightmap-raw.jpg \
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${cfg.nightmap} &
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fetch daymap-raw.png \
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${cfg.daymap} &
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fetch clouds-raw.jpg \
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${cfg.cloudmap} &
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fetch marker.json \
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${cfg.marker} &
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wait
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check_type nightmap-raw.jpg image
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check_type daymap-raw.png image
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check_type clouds-raw.jpg image
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in_size=2048x1024
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xplanet_out_size=1466x1200
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out_geometry=1366x768+100+160
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nightsnow_color='#0c1a49' # nightmap
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for raw in \
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nightmap-raw.jpg \
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daymap-raw.png \
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clouds-raw.jpg \
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;
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do
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normal=''${raw%-raw.*}.png
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if needs_rebuild $normal $raw; then
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echo "make $normal; normalize $raw" >&2
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convert $raw -scale $in_size $normal
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fi
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done
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# create nightmap-fullsnow
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if needs_rebuild nightmap-fullsnow.png; then
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convert -size $in_size xc:$nightsnow_color nightmap-fullsnow.png
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fi
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# extract daymap-snowmask from daymap-final
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if needs_rebuild daymap-snowmask.png daymap.png; then
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convert daymap.png -threshold 95% daymap-snowmask.png
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fi
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# extract nightmap-lightmask from nightmap
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if needs_rebuild nightmap-lightmask.png nightmap.png; then
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convert nightmap.png -threshold 25% nightmap-lightmask.png
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fi
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# create layers
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make_layer nightmap-snowlayer.png nightmap-fullsnow.png daymap-snowmask.png
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make_layer nightmap-lightlayer.png nightmap.png nightmap-lightmask.png
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# apply layers
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flatten nightmap-lightsnowlayer.png \
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nightmap-lightlayer.png \
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nightmap-snowlayer.png
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flatten nightmap-final.png \
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nightmap-lightsnowlayer.png \
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nightmap.png
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# create marker file from json
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if [ -s marker.json ]; then
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jq -r 'to_entries[] | @json "\(.value.latitude) \(.value.longitude)"' marker.json > marker_file
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fi
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# make all unmodified files as final
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for normal in \
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daymap.png \
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clouds.png \
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;
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do
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final=''${normal%.png}-final.png
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needs_rebuild $final &&
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ln $normal $final
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done
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# rebuild every time to update shadow
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xplanet --num_times 1 --geometry $xplanet_out_size \
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--output xplanet-output.png --projection merc \
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-config ${pkgs.writeText "xplanet.config" ''
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[earth]
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"Earth"
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map=daymap-final.png
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night_map=nightmap-final.png
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cloud_map=clouds-final.png
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cloud_threshold=10
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shade=15
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''}
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xplanet --num_times 1 --geometry $xplanet_out_size \
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--output xplanet-krebs-output.png --projection merc \
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-config ${pkgs.writeText "xplanet-krebs.config" ''
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[earth]
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"Earth"
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map=daymap-final.png
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night_map=nightmap-final.png
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cloud_map=clouds-final.png
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cloud_threshold=10
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marker_file=marker_file
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shade=15
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''}
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# trim xplanet output
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if needs_rebuild realwallpaper.png xplanet-output.png; then
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convert xplanet-output.png -crop $out_geometry \
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realwallpaper-tmp.png
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mv realwallpaper-tmp.png realwallpaper.png
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fi
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if needs_rebuild realwallpaper-krebs.png xplanet-krebs-output.png; then
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convert xplanet-krebs-output.png -crop $out_geometry \
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realwallpaper-krebs-tmp.png
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mv realwallpaper-krebs-tmp.png realwallpaper-krebs.png
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fi
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}
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main "$@"
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'';
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User = "realwallpaper";
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};
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};
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@ -1,24 +0,0 @@
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{ stdenv, fetchgit, xplanet, imagemagick, curl, file }:
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stdenv.mkDerivation {
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name = "realwallpaper";
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src = fetchgit {
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url = https://github.com/Lassulus/realwallpaper;
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rev = "847faebc9b7e87e4bea078e3a2304ec00b4cdfc0";
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sha256 = "10zihkwj9vpshlxw2jk67zbsy8g4i8b1y4jzna9fdcsgn7s12jrr";
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};
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phases = [
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"unpackPhase"
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"installPhase"
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];
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buildInputs = [
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];
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installPhase = ''
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mkdir -p $out
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cp realwallpaper.sh $out/realwallpaper.sh
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'';
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}
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