Published unlisted
Edited
Jul 3, 2020
1 star
ramp(interpolateLinearRgb("brown", "steelblue"))
ramp(d3.interpolateLab("brown", "steelblue"))
ramp(d3.interpolateRgb.gamma(2.4)("brown", "steelblue"))
ramp(d3.interpolateRgb("brown", "steelblue"))
ramp(interpolateLinearRgb(d3.schemeCategory10[0], d3.schemeCategory10[1]))
ramp(d3.interpolateLab(d3.schemeCategory10[0], d3.schemeCategory10[1]))
ramp(d3.interpolateRgb.gamma(2.4)(d3.schemeCategory10[0], d3.schemeCategory10[1]))
ramp(d3.interpolateRgb(d3.schemeCategory10[0], d3.schemeCategory10[1]))
function interpolateLinearRgb(start, end) {
const [r0, g0, b0, a0] = lrgb(start);
const [r1, g1, b1, a1] = lrgb(end);
const color = d3.rgb();
return t => {
color.r = lrgb2rgb(r0 + (r1 - r0) * t);
color.g = lrgb2rgb(g0 + (g1 - g0) * t);
color.b = lrgb2rgb(b0 + (b1 - b0) * t);
color.opacity = a0 + (a1 - a0) * t;
return color + "";
};
}
function lrgb(color) {
const {r, g, b, opacity: a} = d3.rgb(color);
return [rgb2lrgb(r), rgb2lrgb(g), rgb2lrgb(b), a];
}
function lrgb2rgb(x) {
return 255 * (x <= 0.0031308 ? 12.92 * x : 1.055 * Math.pow(x, 1 / 2.4) - 0.055);
}
function rgb2lrgb(x) {
return (x /= 255) <= 0.04045 ? x / 12.92 : Math.pow((x + 0.055) / 1.055, 2.4);
}
import {ramp} from "@mbostock/color-ramp"
d3 = require("d3-color", "d3-interpolate", "d3-scale-chromatic")
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