def test_RGB_to_Prismatic(self):
"""
Tests :func:`colour.models.rgb.prismatic.RGB_to_Prismatic` definition.
"""
np.testing.assert_almost_equal(RGB_to_Prismatic(
np.array([0.0, 0.0, 0.0])),
np.array([0.0, 0.0, 0.0, 0.0]),
decimal=7)
np.testing.assert_almost_equal(
RGB_to_Prismatic(np.array([0.25, 0.50, 0.75])),
np.array([0.7500000, 0.1666667, 0.3333333, 0.5000000]),
decimal=7)
def test_domain_range_scale_RGB_to_Prismatic(self):
"""
Tests :func:`colour.models.rgb.prismatic.RGB_to_Prismatic` definition
domain and range scale support.
"""
RGB = np.array([0.25, 0.50, 0.75])
Lrgb = RGB_to_Prismatic(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_Prismatic(RGB * factor), Lrgb * factor, decimal=7)
def test_n_dimensional_RGB_to_Prismatic(self):
"""
Tests :func:`colour.models.rgb.prismatic.RGB_to_Prismatic` definition
n-dimensional support.
"""
RGB = np.array([0.25, 0.50, 0.75])
Lrgb = RGB_to_Prismatic(RGB)
RGB = np.tile(RGB, (6, 1))
Lrgb = np.tile(Lrgb, (6, 1))
np.testing.assert_almost_equal(RGB_to_Prismatic(RGB), Lrgb, decimal=7)
RGB = np.reshape(RGB, (2, 3, 3))
Lrgb = np.reshape(Lrgb, (2, 3, 4))
np.testing.assert_almost_equal(RGB_to_Prismatic(RGB), Lrgb, decimal=7)
def test_nan_RGB_to_Prismatic(self):
"""
Tests :func:`colour.models.rgb.prismatic.RGB_to_Prismatic` 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_Prismatic(RGB)