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@doggan
Created November 6, 2015 20:49
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#!/bin/sh
#
# Script for splitting a tileset image into multiple image files.
function show_usage() {
local ME=`basename "$0"`
echo "USAGE: $ME <in file> <output dir> --width <value> --height <value> {options}"
echo " "
echo "OPTIONS:"
echo " "
echo " -h, --help show usage information"
echo " -z, --zeropad number of digits with zero padding;"
echo " integer>=0; default=0 (no zero padding)"
echo " "
}
function show_error() {
echo "$1"
echo " "
show_usage
exit 1
}
function parse_args() {
while test $# -gt 0; do
case "$1" in
-h|--help)
show_usage
exit 0
;;
--width)
shift
if test $# -gt 0; then
WIDTH=$1
else
show_error "No width specified."
fi
shift
;;
--height)
shift
if test $# -gt 0; then
HEIGHT=$1
else
show_error "No height specified."
fi
shift
;;
-z|--zeropad)
shift
if test $# -gt 0; then
ZEROPAD=$1
fi
shift
;;
*)
break
;;
esac
done
if [ -z "$WIDTH" ]; then
show_error "No width specified."
fi
if [ -z "$HEIGHT" ]; then
show_error "No height specified."
fi
}
if [ "$#" -lt 2 ]; then
show_error "Invalid number of parameters."
fi
FILE="$1"
OUTPUT_DIR="$2"
shift
shift
ZEROPAD=0
parse_args "$@"
ZEROPAD="%0"$ZEROPAD"d"
echo "Processing: $FILE"
convert "$FILE" -crop $WIDTH"x"$HEIGHT $OUTPUT_DIR$ZEROPAD".png"
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