# -*- coding: latin-1 -*-
# Alex 31-1-'06: genera las secuencias png para los titulos
#   de crédito finales de Terroralia.
#   Busca un fichero llamado scroll.png y crea un directorio
#   que contendrá las imágenes generadas
#   y la secuencia png de todas (fichero .pngs).

def addcoords(a, b):
	"""Add two 2d coords, return a 2d coord"""
	return (a[0] + b[0], a[1] + b[1])

def blend(img, template, mask, position):
	"""Blend an image into the given position"""
	for x in range(0,10):
		desp = addcoords(position, [0, x])
		img.paste(template, desp, mask)

import Image
import ImageFont
import ImageDraw
import glob
import os.path
current = "/home/bulk/suse/terroralia/creditos12/scroll/"
rate = 2

# create paste mask
mask = Image.new("L", (720, 432), 50)

# load each template
infile = "scroll.png"
dirname, ext = os.path.splitext(infile)
template = Image.open(infile)
# create new directory
print dirname
if not os.path.exists(dirname):
	os.makedirs(dirname)
# create png sequence
pngspath = dirname + ".pngs"
pngs = open(pngspath, 'w')
pngs.write("PNGLIST\n25.0000\n720\n432\n")

# enter top
h = 3000
for i in range(0, (h-432)/rate):
	# create each image
	img = Image.new("RGBA", (720, 432))
	coords = [0, i*rate-432]
	piece = template.crop((0, i*rate, 720, 432 + i*rate))
	img.paste(piece)
	# save it
	name = '%4.4d' % (i)
	destination = os.path.join(dirname, "img" + name + ".png")
	img.save(destination)
	pngs.write(current + destination + "\n")
	
# close png sequence
pngs.close()