"""
SMPTE C Colourspace
===================

Define the *SMPTE C* colourspace:

-   :attr:`RGB_COLOURSPACE_SMPTE_C`.

References
----------
-   :cite:`SocietyofMotionPictureandTelevisionEngineers2004a` : Society of
    Motion Picture and Television Engineers. (2004). RP 145:2004: SMPTE C Color
    Monitor Colorimetry. In RP 145:2004: Vol. RP 145:200. The Society of Motion
    Picture and Television Engineers. doi:10.5594/S9781614821649
"""

from __future__ import annotations

import typing
from functools import partial

import numpy as np

from colour.colorimetry import CCS_ILLUMINANTS

if typing.TYPE_CHECKING:
    from colour.hints import NDArrayFloat

from colour.models.rgb import RGB_Colourspace, gamma_function, normalised_primary_matrix

__author__ = "Colour Developers"
__copyright__ = "Copyright 2013 Colour Developers"
__license__ = "BSD-3-Clause - https://opensource.org/licenses/BSD-3-Clause"
__maintainer__ = "Colour Developers"
__email__ = "colour-developers@colour-science.org"
__status__ = "Production"

__all__ = [
    "PRIMARIES_SMPTE_C",
    "WHITEPOINT_NAME_SMPTE_C",
    "CCS_WHITEPOINT_SMPTE_C",
    "MATRIX_SMPTE_C_TO_XYZ",
    "MATRIX_XYZ_TO_SMPTE_C",
    "RGB_COLOURSPACE_SMPTE_C",
]

PRIMARIES_SMPTE_C: NDArrayFloat = np.array(
    [
        [0.630, 0.340],
        [0.310, 0.595],
        [0.155, 0.070],
    ]
)
"""*SMPTE C* colourspace primaries."""

WHITEPOINT_NAME_SMPTE_C: str = "D65"
"""*SMPTE C* colourspace whitepoint name."""

CCS_WHITEPOINT_SMPTE_C: NDArrayFloat = CCS_ILLUMINANTS[
    "CIE 1931 2 Degree Standard Observer"
][WHITEPOINT_NAME_SMPTE_C]
"""*SMPTE C* colourspace whitepoint chromaticity coordinates."""

MATRIX_SMPTE_C_TO_XYZ: NDArrayFloat = normalised_primary_matrix(
    PRIMARIES_SMPTE_C, CCS_WHITEPOINT_SMPTE_C
)
"""*SMPTE C* colourspace to *CIE XYZ* tristimulus values matrix."""

MATRIX_XYZ_TO_SMPTE_C: NDArrayFloat = np.linalg.inv(MATRIX_SMPTE_C_TO_XYZ)
"""*CIE XYZ* tristimulus values to *SMPTE C* colourspace matrix."""

RGB_COLOURSPACE_SMPTE_C: RGB_Colourspace = RGB_Colourspace(
    "SMPTE C",
    PRIMARIES_SMPTE_C,
    CCS_WHITEPOINT_SMPTE_C,
    WHITEPOINT_NAME_SMPTE_C,
    MATRIX_SMPTE_C_TO_XYZ,
    MATRIX_XYZ_TO_SMPTE_C,
    partial(gamma_function, exponent=1 / 2.2),
    partial(gamma_function, exponent=2.2),
)
RGB_COLOURSPACE_SMPTE_C.__doc__ = """
*SMPTE C* colourspace.

References
----------
:cite:`SocietyofMotionPictureandTelevisionEngineers2004a`
"""
