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