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#!python
from multiprocessing import Pool
from math import floor
import os
import requests
import time
from PIL import Image
from browser import *
TAG = '2006AW'
FIRST_PAGE = 1773
LAST_PAGE = 1879
ZOOM = 1
# Fetch all the tiles from a tile server and then compose them into a single image
def grab(page):
out_fn = "./{}/{}/{}_{}.jpg".format(TAG, ZOOM, page, ZOOM)
if os.path.exists(out_fn):
return
print("Fetching {}...".format(page))
os.makedirs("./{}/{}/{}".format(TAG, ZOOM, page), exist_ok=True)
json_url = "https://framemark.vam.ac.uk//collections/2006AW{}/info.json".format(page)
data = fetch_json(json_url)
if data is None:
print("error with page {}".format(page))
return
max_width = data['width']
max_height = data['height']
TILE_W = round((max_width / ZOOM) / 256)
TILE_H = round((max_height / ZOOM) / 256)
print("{}x{}".format(TILE_W, TILE_H))
dataset = []
for i in range(0, TILE_W + 1):
for j in range(0, TILE_H + 1):
# https://framemark.vam.ac.uk/collections/2006AW1773/768,256,256,256/256,/0/default.jpg
url = "https://framemark.vam.ac.uk/collections/2006AW{}/{},{},256,256/256,/0/default.jpg".format(page, i * 256, j * 256)
fn = "./{}/{}/{}/{}_{}.jpg".format(TAG, ZOOM, page, i, j)
if not os.path.exists(fn):
dataset.append((url, fn,))
# Fetch all the images we don't have
if len(dataset):
parallel_fetch(dataset)
# Get the dimensions of the final image (interior plus corners)
ww = max_width
hh = max_height
# Build the new canvas by pasting the tiles across it
canvas = Image.new('RGB', (ww, hh,))
x = 0
for i in range(0, TILE_W):
y = 0
for j in range(0, TILE_H):
fn = "./{}/{}/{}/{}_{}.jpg".format(TAG, ZOOM, page, i, j)
image, width, height = load_image(fn)
if image:
if i == TILE_W-1:
width = max_width % 256
width += 1
else:
width = min(width, 256)
if j == TILE_H-1:
height = max_height % 256
else:
height = min(height, 256)
image.thumbnail((width, height,), Image.ANTIALIAS)
canvas.paste(image, (x, y))
y += 256
x += 256
canvas.save(out_fn)
if __name__ == '__main__':
os.makedirs("{}/{}".format(TAG, ZOOM), exist_ok=True)
for page in range(FIRST_PAGE, LAST_PAGE + 1):
grab(page)
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