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Contents
import { rgb2hue, rgb2whiteness, rgb2value } from './util';
import { hsl2rgb } from './rgb-hsl';
/* Convert between RGB and HWB
/* ========================================================================== */
export function rgb2hwb(rgbR, rgbG, rgbB, fallbackhue) {
const hwbH = rgb2hue(rgbR, rgbG, rgbB, fallbackhue);
const hwbW = rgb2whiteness(rgbR, rgbG, rgbB);
const hwbV = rgb2value(rgbR, rgbG, rgbB);
const hwbB = 100 - hwbV;
return [hwbH, hwbW, hwbB];
}
export function hwb2rgb(hwbH, hwbW, hwbB, fallbackhue) {
const [ rgbR, rgbG, rgbB ] = hsl2rgb(hwbH, 100, 50, fallbackhue).map(
v => v * (100 - hwbW - hwbB) / 100 + hwbW
);
return [ rgbR, rgbG, rgbB ];
}
/*
References
----------
- https://www.w3.org/TR/css-color-4/#hwb-to-rgb
- http://alvyray.com/Papers/CG/hwb2rgb.htm
/* ========================================================================== */
Version data entries
26 entries across 25 versions & 8 rubygems