#!/usr/local/bin/python

from eigenlib import *
import re

# usage:  progressive.py eigs-dir picture.gif
# produces   p-name00.gif .... p-nameXX.gif

fs = FaceSpace(sys.argv[1])

orig_im_face = fs.image_to_vector(sys.argv[2])
noim = norm(orig_im_face)
fs_face = fs.project_to_face_space(orig_im_face)

name_finder = re.compile('([\w]+)\.')
name = name_finder.search(sys.argv[2]).group(1)

for k in range(1, fs.M_prime):
    im_face = fs.lift_to_image_space(fs_face, k)
    fs.vector_to_image(im_face, 'p-%s-%02d.gif' % (name, k))
    print '%2d: %1.03f' % (k, norm(im_face - orig_im_face) / noim)