# Generates a raster tile archive for conformance testing.
from urllib.request import Request, urlopen
from pmtiles.tile import zxy_to_tileid, tileid_to_zxy, TileType, Compression
from pmtiles.writer import Writer
acc = 0
with open("stamen_toner_maxzoom3.pmtiles", "wb") as f:
writer = Writer(f)
for tileid in range(0, zxy_to_tileid(4, 0, 0)):
acc += 1
z, x, y = tileid_to_zxy(tileid)
req = Request(f"https://stamen-tiles.a.ssl.fastly.net/toner/{z}/{x}/{y}.png")
req.add_header(
"User-Agent",
"Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:47.0) Gecko/20100101 Firefox/47.0",
)
with urlopen(req) as f:
writer.write_tile(tileid, f.read())
writer.finalize(
{
"tile_type": TileType.PNG,
"tile_compression": Compression.NONE,
"min_zoom": 0,
"max_zoom": 3,
"min_lon_e7": int(-180.0 * 10000000),
"min_lat_e7": int(-85.0 * 10000000),
"max_lon_e7": int(180.0 * 10000000),
"max_lat_e7": int(85.0 * 10000000),
"center_zoom": 0,
"center_lon_e7": 0,
"center_lat_e7": 0,
},
{
"attribution": 'Map tiles by Stamen Design, under CC BY 3.0. Data by OpenStreetMap, under ODbL.'
},
)