45 lines
1.6 KiB
JavaScript
45 lines
1.6 KiB
JavaScript
#!/bin/nodejs
|
|
|
|
const componentToHex = (c) => ("0" + c.toString(16)).slice(-2);
|
|
const rgbToHex = (c) => componentToHex(c.r) + componentToHex(c.g) + componentToHex(c.b);
|
|
const hexToRgb = (hex) => {
|
|
const result = /^#?([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})$/i.exec(hex);
|
|
return result ? {
|
|
r: parseInt(result[1], 16), g: parseInt(result[2], 16), b: parseInt(result[3], 16)
|
|
} : null;
|
|
};
|
|
|
|
const parseScheme = (str) => str.replace(/\s+/g, '').split(",").map(e=>hexToRgb(e))
|
|
|
|
const getTint = (c, w) => Math.round(c + (255 - c) * 1 * w);
|
|
const getShade = (c, w) => Math.round(c * w);
|
|
|
|
const tint = (c, w) => ({r:getTint(c.r, w), g:getTint(c.g, w), b:getTint(c.b, w)});
|
|
const shade = (c, w) => ({r:getShade(c.r, w), g:getShade(c.g, w), b:getShade(c.b, w)});
|
|
|
|
const tints = (c, w) => Array.from({ length: 100 / w }, (_, i) => tint(c, (i + 1) * w/100));
|
|
const shades = (c, w) => Array.from({ length: 100 / w }, (_, i) => shade(c, (i + 1) * w/100));
|
|
|
|
const genPalette = (c, w=10) => [...tints(c, w).reverse(), Object.assign(c), ...shades(c, w).reverse()];
|
|
|
|
|
|
const fs = require("fs");
|
|
|
|
fs.readFile("palette.in", "utf-8", (_, buf) => {
|
|
console.log(buf)
|
|
const colors = parseScheme(buf)
|
|
.map(e=>{
|
|
console.log(e)
|
|
return genPalette(e)})
|
|
console.log(colors)
|
|
const hexstr = colors.map(cs=>cs.map(c=>rgbToHex(c))).join(',')
|
|
const gifstr = colors.map(c=>`${c.r} ${c.g} ${c.b}`).join('\n')
|
|
|
|
fs.writeFile("palette.out", hexstr, (err) => {
|
|
if (err) console.log(err);
|
|
});
|
|
fs.writeFile("gifpalette.out", gifstr, (err) => {
|
|
if (err) console.log(err);
|
|
});
|
|
});
|