Rename "colour.ALEXA_WIDE_GAMUT_RGB_COLOURSPACE" class to "colour.ALE…

…XA_WIDE_GAMUT_COLOURSPACE".

References #341.

colour/models/rgb/dataset/__init__.py

@@ -10,7 +10,7 @@
 from .aces_it import ACES_RICD
 from .adobe_rgb_1998 import ADOBE_RGB_1998_COLOURSPACE
 from .adobe_wide_gamut_rgb import ADOBE_WIDE_GAMUT_RGB_COLOURSPACE
-from .alexa_wide_gamut_rgb import ALEXA_WIDE_GAMUT_RGB_COLOURSPACE
+from .alexa_wide_gamut import ALEXA_WIDE_GAMUT_COLOURSPACE
 from .apple_rgb import APPLE_RGB_COLOURSPACE
 from .best_rgb import BEST_RGB_COLOURSPACE
 from .beta_rgb import BETA_RGB_COLOURSPACE
@@ -50,7 +50,7 @@
     ACES_CG_COLOURSPACE.name: ACES_CG_COLOURSPACE,
     ADOBE_RGB_1998_COLOURSPACE.name: ADOBE_RGB_1998_COLOURSPACE,
     ADOBE_WIDE_GAMUT_RGB_COLOURSPACE.name: ADOBE_WIDE_GAMUT_RGB_COLOURSPACE,
-    ALEXA_WIDE_GAMUT_RGB_COLOURSPACE.name: ALEXA_WIDE_GAMUT_RGB_COLOURSPACE,
+    ALEXA_WIDE_GAMUT_COLOURSPACE.name: ALEXA_WIDE_GAMUT_COLOURSPACE,
     APPLE_RGB_COLOURSPACE.name: APPLE_RGB_COLOURSPACE,
     BEST_RGB_COLOURSPACE.name: BEST_RGB_COLOURSPACE,
     BETA_RGB_COLOURSPACE.name: BETA_RGB_COLOURSPACE,
@@ -116,7 +116,7 @@
     'ACES_2065_1_COLOURSPACE', 'ACES_CC_COLOURSPACE', 'ACES_CCT_COLOURSPACE',
     'ACES_PROXY_COLOURSPACE', 'ACES_CG_COLOURSPACE',
     'ADOBE_RGB_1998_COLOURSPACE', 'ADOBE_WIDE_GAMUT_RGB_COLOURSPACE',
-    'ALEXA_WIDE_GAMUT_RGB_COLOURSPACE', 'APPLE_RGB_COLOURSPACE',
+    'ALEXA_WIDE_GAMUT_COLOURSPACE', 'APPLE_RGB_COLOURSPACE',
     'BEST_RGB_COLOURSPACE', 'BETA_RGB_COLOURSPACE', 'BT470_525_COLOURSPACE',
     'BT470_625_COLOURSPACE', 'BT709_COLOURSPACE', 'BT2020_COLOURSPACE',
     'CIE_RGB_COLOURSPACE', 'CINEMA_GAMUT_COLOURSPACE',

colour/models/rgb/dataset/alexa_wide_gamut.py

@@ -0,0 +1,103 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+"""
+ALEXA Wide Gamut Colourspace
+============================
+
+Defines the *ALEXA Wide Gamut* colourspace:
+
+-   :attr:`ALEXA_WIDE_GAMUT_COLOURSPACE`.
+
+See Also
+--------
+`RGB Colourspaces Jupyter Notebook
+<http://nbviewer.jupyter.org/github/colour-science/colour-notebooks/\
+blob/master/notebooks/models/rgb.ipynb>`_
+
+References
+----------
+.. [1]  ARRI. (2012). ALEXA - Log C Curve - Usage in VFX. Retrieved from
+        http://www.arri.com/?eID=registration&file_uid=8026
+"""
+
+from __future__ import division, unicode_literals
+
+import numpy as np
+
+from colour.colorimetry import ILLUMINANTS
+from colour.models.rgb import (RGB_Colourspace, log_encoding_ALEXALogC,
+                               log_decoding_ALEXALogC)
+
+__author__ = 'Colour Developers'
+__copyright__ = 'Copyright (C) 2013-2017 - Colour Developers'
+__license__ = 'New BSD License - http://opensource.org/licenses/BSD-3-Clause'
+__maintainer__ = 'Colour Developers'
+__email__ = 'colour-science@googlegroups.com'
+__status__ = 'Production'
+
+__all__ = [
+    'ALEXA_WIDE_GAMUT_PRIMARIES', 'ALEXA_WIDE_GAMUT_ILLUMINANT',
+    'ALEXA_WIDE_GAMUT_WHITEPOINT', 'ALEXA_WIDE_GAMUT_TO_XYZ_MATRIX',
+    'XYZ_TO_ALEXA_WIDE_GAMUT_MATRIX', 'ALEXA_WIDE_GAMUT_COLOURSPACE'
+]
+
+ALEXA_WIDE_GAMUT_PRIMARIES = np.array(
+    [[0.6840, 0.3130],
+     [0.2210, 0.8480],
+     [0.0861, -0.1020]])  # yapf: disable
+"""
+*ALEXA Wide Gamut* colourspace primaries.
+
+ALEXA_WIDE_GAMUT_PRIMARIES : ndarray, (3, 2)
+"""
+
+ALEXA_WIDE_GAMUT_ILLUMINANT = 'D65'
+"""
+*ALEXA Wide Gamut* colourspace whitepoint name as illuminant.
+
+ALEXA_WIDE_GAMUT_WHITEPOINT : unicode
+"""
+
+ALEXA_WIDE_GAMUT_WHITEPOINT = (
+    ILLUMINANTS['CIE 1931 2 Degree Standard Observer']
+    [ALEXA_WIDE_GAMUT_ILLUMINANT])  # yapf: disable
+"""
+*ALEXA Wide Gamut* colourspace whitepoint.
+
+ALEXA_WIDE_GAMUT_WHITEPOINT : ndarray
+"""
+
+ALEXA_WIDE_GAMUT_TO_XYZ_MATRIX = np.array(
+    [[0.638008, 0.214704, 0.097744],
+     [0.291954, 0.823841, -0.115795],
+     [0.002798, -0.067034, 1.153294]])  # yapf: disable
+"""
+*ALEXA Wide Gamut* colourspace to *CIE XYZ* tristimulus values matrix.
+
+ALEXA_WIDE_GAMUT_TO_XYZ_MATRIX : array_like, (3, 3)
+"""
+
+XYZ_TO_ALEXA_WIDE_GAMUT_MATRIX = np.array(
+    [[1.789066, -0.482534, -0.200076],
+     [-0.639849, 1.396400, 0.194432],
+     [-0.041532, 0.082335, 0.878868]])  # yapf: disable
+"""
+*CIE XYZ* tristimulus values to *ALEXA Wide Gamut* colourspace matrix.
+
+XYZ_TO_ALEXA_WIDE_GAMUT_MATRIX : array_like, (3, 3)
+"""
+
+ALEXA_WIDE_GAMUT_COLOURSPACE = RGB_Colourspace(
+    'ALEXA Wide Gamut',
+    ALEXA_WIDE_GAMUT_PRIMARIES,
+    ALEXA_WIDE_GAMUT_WHITEPOINT,
+    ALEXA_WIDE_GAMUT_ILLUMINANT,
+    ALEXA_WIDE_GAMUT_TO_XYZ_MATRIX,
+    XYZ_TO_ALEXA_WIDE_GAMUT_MATRIX,
+    log_encoding_ALEXALogC,
+    log_decoding_ALEXALogC)  # yapf: disable
+"""
+*ALEXA Wide Gamut* colourspace.
+
+ALEXA_WIDE_GAMUT_COLOURSPACE : RGB_Colourspace
+"""

colour/models/rgb/tests/test_rgb_colourspace.py

@@ -54,7 +54,7 @@ def test_transformation_matrices(self):
                 tolerance = 1e-4
             elif colourspace.name in ('Adobe RGB (1998)', ):
                 tolerance = 1e-5
-            elif colourspace.name in ('ALEXA Wide Gamut RGB', 'V-Gamut',
+            elif colourspace.name in ('ALEXA Wide Gamut', 'V-Gamut',
                                       'REDWideGamutRGB'):
                 tolerance = 1e-6
             else: