def test_RGB_to_HSL(self):
"""Test :func:`colour.models.rgb.cylindrical.RGB_to_HSL` definition."""
np.testing.assert_almost_equal(
RGB_to_HSL(np.array([0.45620519, 0.03081071, 0.04091952])),
np.array([0.99603944, 0.87347144, 0.24350795]),
decimal=7,
)
np.testing.assert_almost_equal(
RGB_to_HSL(np.array([0.00000000, 0.00000000, 0.00000000])),
np.array([0.00000000, 0.00000000, 0.00000000]),
decimal=7,
)
np.testing.assert_almost_equal(
RGB_to_HSL(np.array([1.00000000, 1.00000000, 1.00000000])),
np.array([0.00000000, 0.00000000, 1.00000000]),
decimal=7,
)
np.testing.assert_almost_equal(
RGB_to_HSL(np.array([1.00000000, 0.00000000, 0.00000000])),
np.array([0.00000000, 1.00000000, 0.50000000]),
decimal=7,
)
def test_domain_range_scale_RGB_to_HSL(self):
"""
Test :func:`colour.models.rgb.cylindrical.RGB_to_HSL` definition
domain and range scale support.
"""
RGB = np.array([0.45620519, 0.03081071, 0.04091952])
HSL = RGB_to_HSL(RGB)
d_r = (("reference", 1), ("1", 1), ("100", 100))
for scale, factor in d_r:
with domain_range_scale(scale):
np.testing.assert_almost_equal(
RGB_to_HSL(RGB * factor), HSL * factor, decimal=7
)
def test_n_dimensional_RGB_to_HSL(self):
"""
Test :func:`colour.models.rgb.cylindrical.RGB_to_HSL` definition
n-dimensional arrays support.
"""
RGB = np.array([0.45620519, 0.03081071, 0.04091952])
HSL = RGB_to_HSL(RGB)
RGB = np.tile(RGB, (6, 1))
HSL = np.tile(HSL, (6, 1))
np.testing.assert_almost_equal(RGB_to_HSL(RGB), HSL, decimal=7)
RGB = np.reshape(RGB, (2, 3, 3))
HSL = np.reshape(HSL, (2, 3, 3))
np.testing.assert_almost_equal(RGB_to_HSL(RGB), HSL, decimal=7)
def test_nan_RGB_to_HSL(self):
"""
Test :func:`colour.models.rgb.cylindrical.RGB_to_HSL` definition nan
support.
"""
cases = [-1.0, 0.0, 1.0, -np.inf, np.inf, np.nan]
cases = set(permutations(cases * 3, r=3))
for case in cases:
RGB = np.array(case)
RGB_to_HSL(RGB)