def expand(self, tileset, amount=1):
"""Given a list of tiles, expand the coverage around those tiles"""
tiles = {}
tileset = [[int(b) for b in a.split(",")] for a in tileset]
for tile in tileset:
(x, y) = tile
for dx in range(-amount, amount + 1):
for dy in range(-amount, amount + 1):
tiles["%d,%d" % (x + dx, y + dy)] = True
return tiles.keys()
def expand(self, tileset, amount=1):
"""Given a list of tiles, expand the coverage around those tiles"""
tiles = {}
tileset = [[int(b) for b in a.split(",")] for a in tileset]
for tile in tileset:
(x, y) = tile
for dx in range(-amount, amount + 1):
for dy in range(-amount, amount + 1):
tiles["%d,%d" % (x + dx, y + dy)] = True
return tiles.keys()
def listTiles(self, route):
"""List all tiles touched by a polyline"""
tiles = {}
for pos in route:
(lat, lon) = pos
(tx, ty) = tileXY(lat, lon, 15)
tile = "%d,%d" % (tx, ty)
if not tiles.has_key(tile):
tiles[tile] = True
return tiles.keys()
