Add avatars

utils/avatars/faris-black-mage/generate-squares.sh

@@ -0,0 +1,37 @@
+#!/bin/sh
+# env
+# Written in 2020 by Lucas
+# CC0 1.0 Universal/Public domain - No rights reserved
+#
+# To the extent possible under law, the author(s) have dedicated all
+# copyright and related and neighboring rights to this software to the
+# public domain worldwide. This software is distributed without any
+# warranty. You should have received a copy of the CC0 Public Domain
+# Dedication along with this software. If not, see
+# <http://creativecommons.org/publicdomain/zero/1.0/>.
+
+: ${CANVAS_HEIGHT:=352}
+: ${CANVAS_WIDTH:=352}
+: ${IMAGE_HEIGHT:=500}
+: ${IMAGE_WIDTH:=500}
+
+if ! tmpfile=$(mktemp -t bg.XXXXXXXXXX); then
+	printf "%s: can't create temporary file\n" "${0##*/}" >&2
+	exit 1
+fi
+
+trap 'rm -f "$tmpfile"' EXIT INT QUIT TERM
+
+basefile=ff5-faris-black-mage.png
+basename=${basefile%.png}
+
+pngtopam -alphapam "$basefile" |
+    pamcut -top 0 -left -0 -width "$CANVAS_WIDTH" -height "$CANVAS_HEIGHT" |
+    pamtopng >"$basename-square.png"
+
+pngtopam -alphapam "$basename-square.png" >"$tmpfile"
+for color in black white; do
+	ppmmake "$color" "$CANVAS_WIDTH" "$CANVAS_HEIGHT" |
+	    pamcomp "$tmpfile" |
+	    pamtopng >"$basename-square-bg-$color.png"
+done