######################## Usage.py #################
text = """
AREA DEFINED AS
512000N 0001000W THEN 513000N 0002000W
THEN CLOCKWISE ARC OF A CIRCLE RADIUS 10 NM CENTRED ON 512500N 0001500W TO 512000N 0001000W

AREA DEFINED AS
RADIUS 5 NM CENTRED ON 512000N 0000000W
"""

tree = parser.parse(text)
ast = NotamTransformer().transform(tree)

geom = build_geometry(ast)

print(type(geom), geom.is_valid)