Skip to content

Instantly share code, notes, and snippets.

View facelessuser's full-sized avatar
💭
Screaming into the void 😱

Isaac Muse facelessuser

💭
Screaming into the void 😱
View GitHub Profile
@facelessuser
facelessuser / km.md
Created February 14, 2025 22:20
Kubelka-Munk Interpolation

Interpolation with Kubelka-Munk Theory

Approach

This is an experiment showcasing interpolation via Kubelka-Munk theory. Approach generally employs the method as outlined in Spectral.js. Most of foundational topics are covered in Mixbox's paper, though Spectral.js uses an approach less focused on specific paints and instead opts to generalize and simplify the approach by simply generating reflectance curves directly from the spectral data. Results don't necessarily mimic specific paints, but give a pigment like feel.

@facelessuser
facelessuser / fancylist.py
Last active September 17, 2024 16:45
Prototype: Fancy Lists for Python Mardkwon
"""
Fancy lists in the style of Pandoc.
---
# A Python implementation of John Gruber's Markdown.
# Started by Manfred Stienstra (http://www.dwerg.net/).
# Maintained for a few years by Yuri Takhteyev (http://www.freewisdom.org).
# Currently maintained by Waylan Limberg (https://github.com/waylan),
@facelessuser
facelessuser / okwide.py
Created March 21, 2024 23:18
Okhsl and Okhsv for wide gamuts
# pragma: init
from __future__ import annotations
from coloraide.spaces.okhsl import Okhsl, okhsl_to_oklab, oklab_to_okhsl
from coloraide.spaces.okhsv import Okhsv, okhsv_to_oklab, oklab_to_okhsv
P3L_TO_LMS = [
[0.4813798527499543, 0.4621183710113182, 0.05650177623872754],
[0.2288319418112447, 0.6532168193835677, 0.11795123880518772],
[0.08394575232299314, 0.22416527097756647, 0.6918889766994405]
]
@facelessuser
facelessuser / compare.py
Created February 26, 2024 18:13
Compare GMA
from coloraide.gamut import Fit
from coloraide.spaces import RGBish
from coloraide import algebra as alg
class OkLChScale(Fit):
"""
Gamut mapping by scaling.
Expected gamut mapping spaces are RGB type spaces.
For best results, linear light RGB spaces are preferred.
"""
@facelessuser
facelessuser / scalelh.py
Last active February 18, 2024 22:34
Scale LH and tones
# pragma: init
from coloraide.gamut import Fit
from coloraide.spaces import RGBish
class OkLChScale(Fit):
"""
Gamut mapping by scaling.
Expected gamut mapping spaces are RGB type spaces.
For best results, linear light RGB spaces are preferred.
@facelessuser
facelessuser / oklch-scale2.py
Created February 15, 2024 13:21
Evaluating Scaled LH
# pragma: init
from coloraide.gamut import Fit
from coloraide.spaces import RGBish
from coloraide import algebra as alg
class OkLChScale(Fit):
"""
Gamut mapping by scaling.
Expected gamut mapping spaces are RGB type spaces.
@facelessuser
facelessuser / exploring-tonal-palettes.md
Last active March 5, 2025 05:46
Exploring Tonal Palettes

Exploring Tonal Palettes

HCT

HCT is a color model developed by [Google][material-hct]. It aims to solve a problem related to generating color palettes with good contrast. While HCT may seem like a revolutionary color model, the idea behind it is quite simple, take the perceptually uniform color model CAM16 and combine it with the CIE Lab's lightness.

Upside of HCT

@facelessuser
facelessuser / css.py
Created August 23, 2023 16:24
CSS undefined handling
from coloraide import Color as Base
class Color(Base):
FIT = 'oklch-chroma'
POWERLESS = True
CARRYFORWARD = True
print('==== Case 1 ====')
color = Color.interpolate(['oklch(100% 50% 60deg)', 'oklch(50% 50% 0deg)'], space='oklch', out_space='oklch')(0.5)
Row([color.to_string(percent=True), color.convert('srgb').to_string()])

/// tab | Tab 1

//// tab | Tab A content ////

//// tab | Tab B content //// ///

@facelessuser
facelessuser / LICENSE.md
Created June 30, 2023 15:40
Delta Phi Star

DPS CONTRAST (DELTA PHI STAR) LICENSE

DPS Contrast, also known as Delta Phi Star, is a simple formula for predicting human visual perception of contrast between text and background.

  • WHAT WHERE HOW

    • Delta Phi Star predicts the contrast of text against the background for a given pair of colors.
    • Delta Phi Star emerged from the SAPC/APCA project developing new standards for better beat ability on the web.
    • Delta Phi Star takes in two $L^*$ (Lstar) values, and returns an $L^c$ (lightness contrast) value.
  • UNIFORMITY:

  • DPS Contrast is quasi-uniform for human perception of text against a background on a self-illuminated display