three-stdlib/math/ColorConverter.cjs

stand-alone library of threejs examples

"use strict";
Object.defineProperty(exports, Symbol.toStringTag, { value: "Module" });
const THREE = require("three");
const _hsl = {};
const ColorConverter = {
  setHSV(color, h, s, v) {
    h = THREE.MathUtils.euclideanModulo(h, 1);
    s = THREE.MathUtils.clamp(s, 0, 1);
    v = THREE.MathUtils.clamp(v, 0, 1);
    return color.setHSL(h, s * v / ((h = (2 - s) * v) < 1 ? h : 2 - h), h * 0.5);
  },
  getHSV(color, target) {
    color.getHSL(_hsl);
    _hsl.s *= _hsl.l < 0.5 ? _hsl.l : 1 - _hsl.l;
    target.h = _hsl.h;
    target.s = 2 * _hsl.s / (_hsl.l + _hsl.s);
    target.v = _hsl.l + _hsl.s;
    return target;
  },
  // where c, m, y, k is between 0 and 1
  setCMYK(color, c, m, y, k) {
    const r = (1 - c) * (1 - k);
    const g = (1 - m) * (1 - k);
    const b = (1 - y) * (1 - k);
    return color.setRGB(r, g, b);
  },
  getCMYK(color, target) {
    const r = color.r;
    const g = color.g;
    const b = color.b;
    const k = 1 - Math.max(r, g, b);
    const c = (1 - r - k) / (1 - k);
    const m = (1 - g - k) / (1 - k);
    const y = (1 - b - k) / (1 - k);
    target.c = c;
    target.m = m;
    target.y = y;
    target.k = k;
    return target;
  }
};
exports.ColorConverter = ColorConverter;
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