Rewrite logo composition/generation logic. Update '.gitignore' to exclude generated files.

1 files changed, 88 insertions, 2 deletions

diff --git a/assets/images/polyguin.sh b/assets/images/polyguin.sh
index 97a2ab0..1bf0df4 100755
--- a/assets/images/polyguin.sh
+++ b/assets/images/polyguin.sh
@@ -1,5 +1,13 @@
 #!/bin/sh -e
 
+HERE=$(dirname $(readlink -f ${0}));
+cd ${HERE};
+
+rm -f gen_*;
+
+#---------------------------------------------------------------
+# Transparent monochrome (B on W, W on B) SVGs from master.
+
 ##
 # Target: color
 #
@@ -78,7 +86,85 @@ grep fill: polyguin.svg                                        \
       done                                                     \
     ;
 
+
+#===============================================================
+docker run -v$(pwd):/x -w/x --rm -i alpine:3.14 <<'EOF'
+apk add graphicsmagick imagemagick;
+#===============================================================
+
+#---------------------------------------------------------------
+# SVG master --> scaled PNGs for composition onto logo template.
+
+##
+# SVG --> PNG for master logo icon.
+#
+#  x28 is GitLab
+#  x54 is Website
+# x200 is SPI project page
+#
+# This runs inside Docker because of ImageMagick bugs and GM is
+# the only free software I can find that doesn't screw this up.
+#
+for c in color black white; do
+for r in x28 x54 x200; do
+    gm convert -trim -density 600 -resize ${r} -background none polyguin_${c}.svg gen_polyguin_${c}_${r}.png;
+    chown 1000:1000 gen_polyguin_${c}_${r}.png;
+done # r
+done # c
+
+
+#---------------------------------------------------------------
+# PSD master --> scaled PNGs for composition onto logo template.
+
 ##
-# SVG --> PNG
+# PSD --> PNG for master logo icon.
 #
-docker run -v$(pwd):/root --rm -it alpine:latest sh -c 'apk add graphicsmagick; cd; gm convert -trim -density 200 -resize x1000 -background none polyguin.svg polyguin.png; chown 1000:1000 polyguin.png'
+#  x28 is GitLab
+#  x54 is Website
+# x200 is SPI project page
+#
+# GM does not support PSD anymore!
+#
+find . -type f -name "*.psd" | cut -d'/' -f2 | while read k; do
+for r in x28 x54 x200; do
+    magick convert -resize ${r} "${k}[0]" "gen_${k%*.psd}_${r}.png";
+    chown 1000:1000 "gen_${k%*.psd}_${r}.png";
+done
+done
+
+#---------------------------------------------------------------
+# SVG + PSD template composition.
+
+##
+# Contrast suffers a bit but these are great on image backgrounds.
+#
+for c in color black white; do
+for r in x28 x54 x200; do
+    # transparent black polyguin
+    gm composite gen_polyguin_${c}_${r}.png gen_polylogo_template_black_${r}.png gen_polylogo_black_${c}_${r}.png;
+    chown 1000:1000 gen_polylogo_black_${c}_${r}.png;
+
+    # transparent white polyguin
+    gm composite gen_polyguin_${c}_${r}.png gen_polylogo_template_white_${r}.png gen_polylogo_white_${c}_${r}.png;
+    chown 1000:1000 gen_polylogo_white_${c}_${r}.png;
+done # r
+done # c
+
+##
+# These have better contrast and are suited for solid backgrounds.
+#
+# FIXME: improve contrast.
+#
+for r in x28 x54 x200; do
+    # solid black color --> grayscale polyguin
+    magick convert -colorspace Gray -contrast-stretch 0 gen_polylogo_black_color_${r}.png gen_polylogo_black_mono_${r}.png;
+    chown 1000:1000 gen_polylogo_black_mono_${r}.png;
+
+    # solid white color --> grayscale polyguin
+    magick convert -colorspace Gray -contrast-stretch 0 gen_polylogo_white_color_${r}.png gen_polylogo_white_mono_${r}.png;
+    chown 1000:1000 gen_polylogo_black_mono_${r}.png;
+done # r
+
+#===============================================================
+EOF
+#===============================================================