#!/usr/bin/env python
# -*- mode: python; Encoding: utf-8; coding: utf-8 -*-
# Last updated: <2015/12/04 07:52:36 +0900>

"""
8x8ドットのフォントが縦方向で敷き詰められた画像に対して横方向に並び替える
"""

import sys
from PIL import Image


def main():
    if len(sys.argv) != 3:
        print "usage: conv_h_v.py INPUT.png OUTPUT.png"
        sys.exit()

    infile = sys.argv[1]
    outfile = sys.argv[2]

    cw, ch = 8, 8

    img = Image.open(infile).convert("RGB")
    w, h = img.size
    nimg = Image.new("RGB", (w, h))
    for x in range(w / cw):
        for y in range(h / cw):
            timg = img.crop((x * cw, y * ch, w, h))
            nimg.paste(timg, (y * ch, x * cw))
    nimg.save(outfile)


if __name__ == '__main__':
    main()