2019-09-11 04:11:40 +02:00
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#!/bin/sh
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# env
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2020-05-03 16:47:27 +02:00
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# Written in 2019-2020 by Lucas
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2019-09-11 04:11:40 +02:00
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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_BGCOLOR:="#0d0a00"}
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: ${CANVAS_HEIGHT:=768}
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: ${CANVAS_WIDTH:=1366}
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: ${IMAGE_HEIGHT:=768}
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: ${IMAGE_WIDTH:=1080}
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2020-05-03 16:47:27 +02:00
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pos_x=$(((CANVAS_WIDTH - IMAGE_WIDTH) / 2))
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pos_y=$(((CANVAS_HEIGHT - IMAGE_HEIGHT) / 2))
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2019-09-11 04:11:40 +02:00
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if ! tmpfile=$(mktemp -t bg.XXXXXXXXXX); then
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2020-05-03 16:47:27 +02:00
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printf "%s: can't create temporary file\n" "${0##*/}" >&2
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2019-09-11 04:11:40 +02:00
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exit 1
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fi
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trap 'rm -f "$tmpfile"' EXIT INT QUIT TERM
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2020-05-03 16:47:27 +02:00
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pngtopam -alphapam cyberia-cafe-club.png |
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pamscale -width "$IMAGE_WIDTH" -height "$IMAGE_HEIGHT" >"$tmpfile"
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ppmmake "$CANVAS_BGCOLOR" "$CANVAS_WIDTH" "$CANVAS_HEIGHT" |
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pamcomp -xoff "$pos_x" -yoff "$pos_y" "$tmpfile" |
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pamtopng >cyberia-cafe-club-bg.png
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