73 lines
2.4 KiB
Python
73 lines
2.4 KiB
Python
import math
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import os
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import requests
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import sys
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def deg2num(lat_deg, lon_deg, zoom):
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lat_rad = math.radians(lat_deg)
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n = 2.0 ** zoom
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xtile = int((lon_deg + 180.0) / 360.0 * n)
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ytile = int((1.0 - math.log(math.tan(lat_rad) + (1 / math.cos(lat_rad))) / math.pi) / 2.0 * n)
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return (xtile, ytile)
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cities = [
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# Grand Lyon
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{
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"corner1": {"lat": 45.9134, "lng": 4.6733},
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"corner2": {"lat": 45.5583, "lng": 5.1574}
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},
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# Clermont-Ferrand
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{
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"corner1": {"lat": 45.8077, "lng": 3.0375},
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"corner2": {"lat": 45.7187, "lng": 3.2053}
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},
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# Grenoble
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{
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"corner1": {"lat": 45.2307, "lng": 5.6640},
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"corner2": {"lat": 45.1179, "lng": 5.7980}
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},
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# Quimper
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{
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"corner1": {"lat": 48.0657, "lng": -4.2218},
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"corner2": {"lat": 47.9380, "lng": -3.9647}
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},
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]
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def update_progress(label, progress, num_columns=120):
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sys.stdout.write('[%s] [%s] %s%%\r' % (
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label, ('#'*((num_columns-10)*progress/100)).ljust(num_columns-10), progress))
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for map_max_bounds in cities:
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print ''
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for zoom in range(14, 20):
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xtile1, ytile1 = deg2num(map_max_bounds['corner1']['lat'],
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map_max_bounds['corner1']['lng'],
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zoom)
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xtile2, ytile2 = deg2num(map_max_bounds['corner2']['lat'],
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map_max_bounds['corner2']['lng'],
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zoom)
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num_tiles = (1 + xtile2 - xtile1) * (1 + ytile2 - ytile1)
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idx = 0
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for xtile in range(xtile1, xtile2+1):
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for ytile in range(ytile1, ytile2+1):
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update_progress(zoom, int(math.ceil(100.0 * idx / num_tiles)))
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idx += 1
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path = '%s/%s/%s.png' % (zoom, xtile, ytile)
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if os.path.exists(path):
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continue
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url = 'https://tiles.entrouvert.org/hdm/%s/%s/%s.png' % (zoom, xtile, ytile)
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if False:
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# store
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if not os.path.exists(os.path.dirname(path)):
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os.makedirs(os.path.dirname(path))
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r = requests.get(url)
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if r.status_code != 200:
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continue
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with open(path, 'w') as fd:
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fd.write(r.content)
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else:
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# just make sure tile is in cache
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requests.head(url)
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print ''
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