# -*- coding: latin-1 -*-
# Alex 31-1-'06: genera las secuencias png para los titulos
#   al principio de cada escena de Terroralia.
#   Busca ficheros llamados data-* y crea un directorio
#   por cada uno, 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, [x, 0])
		img.paste(template, desp, mask)

import Image
import ImageFont
import ImageDraw
import glob
import os.path
current = "/home/bulk/suse/terroralia/titulos/"
rate = 20

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

# load each template
for infile in glob.glob("*.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 left
	for i in range(0, 720/rate):
		# create each image
		img = Image.new("RGBA", (720, 432))
		coords = [i*rate-720, 0]
		blend(img, template, mask, coords)
		# save it
		name = '%3.3d' % (i)
		destination = os.path.join(dirname, "img" + name + ".png")
		img.save(destination)
		pngs.write(current + destination + "\n")
	
	# create unique image
	img = Image.new("RGBA", (720, 432))
	img.paste(template)
	# save it
	name = '%3.3d' % (720/rate)
	destination = os.path.join(dirname, "img" + name + ".png")
	img.save(destination)
	# and write it 75 times (3 s)
	for i in range(720/rate, 75 + 720/rate):
		pngs.write(current + destination + "\n")
	
	# leave right
	for i in range(75 + 720/rate, 75 + 2*720/rate):
		# create each image
		img = Image.new("RGBA", (720, 432))
		coords = [i*rate - (720+75*rate), 0]
		blend(img, template, mask, coords)
		# save it
		name = '%3.3d' % (i)
		destination = os.path.join(dirname, "img" + name + ".png")
		img.save(destination)
		pngs.write(current + destination + "\n")
	
	# close png sequence
	pngs.close()