#!/bin/bash
# Script for converting an png image to 8bit semitransparent with dimension suitable for category icon

if [ ! command -v convert >/dev/null 2>&1 ]; then
	>&2 echo "convert executable could not be found"
	exit 128
fi


if [ "$1" = "" ]; then
	>&2 echo "zadej filename"
	exit 1
fi

filename="$1"
mkdir -p ./cat
convert "$filename" -channel A -evaluate Multiply 0.9 +channel -resize 48x64 "cat/$filename"