@macrostrat/column-components
Version:
React rendering primitives for stratigraphic columns
19 lines (18 loc) • 700 B
JavaScript
;
const { log } = Math;
const temperature2rgb = (kelvin) => {
const temp = kelvin / 100;
let r, g, b;
if (temp < 66) {
r = 255;
g = temp < 6 ? 0 : -155.25485562709179 - 0.44596950469579133 * (g = temp - 2) + 104.49216199393888 * log(g);
b = temp < 20 ? 0 : -254.76935184120902 + 0.8274096064007395 * (b = temp - 10) + 115.67994401066147 * log(b);
} else {
r = 351.97690566805693 + 0.114206453784165 * (r = temp - 55) - 40.25366309332127 * log(r);
g = 325.4494125711974 + 0.07943456536662342 * (g = temp - 50) - 28.0852963507957 * log(g);
b = 255;
}
return [r, g, b, 1];
};
module.exports = temperature2rgb;
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