class SourcedMap(Map):
def __init__(self, source_maps, source_center, radius, get_map):
class SourcedMap(Map):
def __init__(self, source_maps, source_center, radius, get_map):
# and skip evaluation of already shaded tile. (This only works if tiles
# shading implies they completely lie in existing shades; otherwise we
# would lose shade growth through tiles at shade borders.)
# and skip evaluation of already shaded tile. (This only works if tiles
# shading implies they completely lie in existing shades; otherwise we
# would lose shade growth through tiles at shade borders.)