Isaac Muse facelessuser

This implements the gamut mapping algorithm according to CSS Level 4 specification.

from coloraide.gamut import Fit
from coloraide.util import NaN


class OklchChroma(Fit):
    """Lch chroma gamut mapping class."""

Color Notebook

ColorAide's documentation is rendered with Python Markdown and Pymdown Extensions. The color notebook implements a dynamic, live environment allowing for on the fly page rendering and interactive Python code examples with beautiful visualization of color. This is accomplished by using Pyodide to execute the required Python modules to render the desired pages.

Though Pyodide is used to run the Python code, the actual code is handled special so that we can intercept color objects at various times and translate them to color swatches and gradients. Because of this, asynchrounous code is not really handled

	from coloraide.distance.delta_e_76 import DE76
	from coloraide.gamut.fit_lch_chroma import LchChroma
	from coloraide import Color as OrigColor


	class DEOK(DE76):
	"""Delta E OK class."""

	NAME = "ok"
	SPACE = "oklab"

	"""
	Okhsl class.

	Translation to/from Oklab is licenced under MIT by the original author, all
	other code also licensed under MIT: Copyright (c) 2021 Isaac Muse.

	---- Oklab license ----

	Copyright (c) 2021 Björn Ottosson

	"""
	HSLuv and HPLuv.

	Adapted to Python and ColorAide by Isaac Muse (2021)

	--- HSLuv Conversion Algorithm ---

	Copyright (c) 2012-2021 Alexei Boronine
	Copyright (c) 2016 Florian Dormont

	"""
	Din99o class.

	https://de.wikipedia.org/wiki/DIN99-Farbraum
	"""
	from coloraide.spaces import RE_DEFAULT_MATCH
	from coloraide.spaces.xyz import XYZ
	from coloraide.spaces.lch.base import LchBase
	from coloraide.spaces.lab.base import LabBase, lab_to_xyz, xyz_to_lab
	from coloraide import util

	"""
	Luv and Lch class.

	https://en.wikipedia.org/wiki/CIELUV
	"""
	from coloraide.spaces import Space, RE_DEFAULT_MATCH, GamutUnbound, Percent, WHITES, Cylindrical, Angle
	from coloraide.spaces.xyz import XYZ
	from coloraide import util
	from coloraide import Color as ColorOrig
	import copy

	from coloraide.gamut import Fit, clip_channels
	from coloraide.util import NaN


	class OklchChroma(Fit):
	"""Lch chroma gamut mapping class."""

	NAME = "oklch-chroma"

	EPSILON = 0.0001

	"""Override default highlighter to handle shebangs."""
	import re

	RE_SHEBANG = re.compile(r'\A\#!(\w+)\b\s*\r?\n')


	def md_shebang(src="", language="", class_name=None, options=None, md="", **kwargs):
	"""Formatter wrapper."""

	try:

	"""
	File Strip.

	Licensed under MIT
	Copyright (c) 2012 - 2019 Isaac Muse <isaacmuse@gmail.com>
	"""
	import re

	LINE_PRESERVE = re.compile(r"\r?\n", re.MULTILINE)
	JSON_COMMENTS_PATTERN = re.compile(