feat: mvt decode + download tiles

geo_tiles_assembler/.gitignore

@@ -1 +1,2 @@
 tiles
+results/

geo_tiles_assembler/download_tiles_within_bounds.py

@@ -0,0 +1,58 @@
+import requests
+import os
+import math
+
+def deg2num(lat_deg, lon_deg, zoom):
+    lat_rad = math.radians(lat_deg)
+    n = 1 << zoom
+    xtile = int((lon_deg + 180.0) / 360.0 * n)
+    ytile = int((1.0 - math.asinh(math.tan(lat_rad)) / math.pi) / 2.0 * n)
+    return xtile, ytile
+
+# around chatillon
+BOUNDS = ((48.8, 2.26), (48.82, 2.32))
+BOUNDS = ((48.5, 2.1), (49.9, 2.6))
+
+BASE_URL = os.getenv("SOURCE_BASE_URL")
+BASE_DIR = os.getenv("OUTPUT_BASE_DIR")
+LAYERS = os.getenv("LAYERS_NAMES")
+
+iz = 0
+for z in range(10, 15):
+    TILES_BOUNDS = (
+        deg2num(BOUNDS[0][0], BOUNDS[0][1], z),
+        deg2num(BOUNDS[1][0], BOUNDS[1][1], z)
+    )
+
+    maxx = 0
+    maxy = 0
+    xrange = range(TILES_BOUNDS[0][0], TILES_BOUNDS[1][0])
+    yrange = range(TILES_BOUNDS[1][1], TILES_BOUNDS[0][1])
+
+    print(TILES_BOUNDS)
+    print(xrange, yrange)
+
+    iy = 0
+    for y in reversed(yrange):
+        ix = 0
+        for x in xrange:
+            url = f"{BASE_URL}/{LAYERS}/{z}/{x}/{y}"
+            dir_path = f'{BASE_DIR}/tiles/{LAYERS}/{z}/{x}'
+            tile_path = dir_path + f'/{y}'
+            img_data = 0
+            print(tile_path)
+            if not os.path.exists(tile_path):
+                print(url)
+                res = requests.get(url)
+                if res.status_code >= 300:
+                    print(res.content)
+                    exit()
+                img_data = res.content
+                os.makedirs(dir_path, exist_ok=True)
+                with open(tile_path, 'wb') as handler:
+                    handler.write(img_data)
+            ix += 1
+        iy += 1
+    iz += 1
+
+print("DONE")

geo_tiles_assembler/plot_osm_map_with_coordinates.py

@@ -12,12 +12,15 @@ def deg2num(lat_deg, lon_deg, zoom):
     ytile = int((1.0 - math.asinh(math.tan(lat_rad)) / math.pi) / 2.0 * n)
     return xtile, ytile
 
-BOUNDS = ((49.17, 1.31), (49.18, 1.35))
+#BOUNDS = ((49.17, 1.31), (49.18, 1.35))
+BOUNDS = ((48.7, 2.2), (48.8, 2.3))
+BOUNDS = ((48.8, 2.26), (48.82, 2.32))
+
 
 DEFAULT_HEADERS = {"User-Agent": "Mozilla/5.0 (Windows NT 10.0; rv:127.0) Gecko/20100101 Firefox/127.0"}
 
 iz = 0
-for z in range(16, 17):
+for z in range(14, 15):
     # https://tile.openstreetmap.org/11/1029/700.png
     # 1029, 1030 going to the est, increasing the longitude angle (x)
     # 700, 701, going to the south, deacreasing the flatitude latitude angle (y)

mvt_decode/.gitignore

@@ -0,0 +1 @@
+venv/

mvt_decode/decode.py

@@ -0,0 +1,10 @@
+import mapbox_vector_tile
+import json
+import sys
+with open(sys.argv[1], 'rb') as f:
+    data = f.read()
+decoded_data = mapbox_vector_tile.decode(data)
+
+print(json.dumps(decoded_data))
+with open('out.txt', 'w') as f:
+    f.write(repr(decoded_data))