def __init__(self, random=None):
if random is None:
random = Random()
self.xCoord = random.nextDouble() * 256.0
self.yCoord = random.nextDouble() * 256.0
self.zCoord = random.nextDouble() * 256.0
self.permutations = list(range(512))
for index in range(256):
swap_index = random.nextInt(256 - index) + index
self.permutations[index], self.permutations[index + 256], self.permutations[swap_index] = \
self.permutations[swap_index], self.permutations[swap_index], self.permutations[index]
def __init__(self, seed):
self.rand = Random(seed)
self.noiseGen = [
NoiseGeneratorOctaves(self.rand, octaves)
for octaves in (16, 16, 8, 4, 10, 16)
]
self.noiseField = []
def test_doubles():
r_iter = Random(seed=0).doubles()
next_doubles = [next(r_iter) for _ in range(5)]
assert next_doubles == [
0.730967787376657,
0.24053641567148587,
0.6374174253501083,
0.5504370051176339,
0.5975452777972018,
]
def test_longs():
r_iter = Random(seed=0).longs()
next_longs = [next(r_iter) for _ in range(5)]
assert next_longs == [
13483975612328137016,
4437113785340752062,
11758276261860732986,
10153770766667359491,
11022764866796693357,
]
def test_nextBytes():
test_bytes = bytearray(32)
expected_bytes = bytes([
96,
180,
32,
187,
56,
81,
217,
212,
122,
203,
147,
61,
190,
112,
57,
155,
246,
201,
45,
163,
58,
240,
29,
79,
183,
112,
233,
140,
3,
37,
244,
29,
])
r = Random(seed=0)
r.nextBytes(test_bytes)
assert test_bytes == expected_bytes
def test_nextLong():
r = Random(seed=0)
assert r.nextLong(2**8) == 56
assert r.nextLong(2**16) == 28862
assert r.nextLong(2**24) == 1962042
assert r.nextLong(2**32) == 502539523
assert r.nextLong(2**40) == 269644638061
assert r.nextLong() == 6146794652083548235
def test_next():
r = Random(seed=0)
assert r.next(8) == 187
assert r.next(16) == 54489
assert r.next(24) == 4035531
assert r.next(32) == 2604232894
assert r.next(40) == 700847879818
assert r.next(48) == 86990003003491
def test_nextBoolean():
r = Random(seed=0)
assert r.nextBoolean() is True
assert r.nextBoolean() is True
assert r.nextBoolean() is False
assert r.nextBoolean() is True
def test_nextInt():
r = Random(seed=0)
assert r.nextInt(2**8) == 187
assert r.nextInt(2**16) == 54489
assert r.nextInt(2**24) == 4035531
assert r.nextInt() == 2604232894
def test_ints():
r_iter = Random(seed=0).ints()
next_ints = [next(r_iter) for _ in range(5)]
assert next_ints == [
3139482720, 3571011896, 1033096058, 2604232894, 2737687030
]
def test_nextGaussian():
r = Random(seed=0)
assert r.nextGaussian() == 0.8025330637390305
assert r.nextGaussian() == -0.9015460884175122
assert r.nextGaussian() == 2.080920790428163
assert r.nextGaussian() == 0.7637707684364894
def test_nextDouble():
r = Random(seed=0)
assert r.nextDouble() == 0.730967787376657
assert r.nextDouble() == 0.24053641567148587
assert r.nextDouble() == 0.6374174253501083
assert r.nextDouble() == 0.5504370051176339
def test_nextFloat():
r = Random(seed=0)
assert r.nextFloat() == 0.7309677600860596
assert r.nextFloat() == 0.8314409852027893
assert r.nextFloat() == 0.2405363917350769
assert r.nextFloat() == 0.6063451766967773