fractal/hi-res.sh

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2020-03-07 23:32:57 +01:00
#!/bin/sh
# fractal
# 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/>.
usage()
{
printf "Usage: %s width height [fractal args...]\n" "${0##*/}" >&2
exit 1
}
tonumber()
{
printf "%u\n" "$*"
}
width=
height=
if [ $# -lt 2 ] || ! width=$(tonumber "$1") || ! height=$(tonumber "$2"); then
usage
fi
shift 2
upwidth=$((width * 4))
upheight=$((height * 4))
./fractal "$@" -w $upwidth -h $upheight |
pamscale -width $width -height $height |
pamtopng >julia.png