@antv/x6/lib/registry/filter/sepia.js

JavaScript diagramming library that uses SVG and HTML for rendering

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.sepia = sepia;
const util_1 = require("./util");
function sepia(args = {}) {
    const amount = (0, util_1.getNumber)(args.amount, 1);
    const a = 0.393 + 0.607 * (1 - amount);
    const b = 0.769 - 0.769 * (1 - amount);
    const c = 0.189 - 0.189 * (1 - amount);
    const d = 0.349 - 0.349 * (1 - amount);
    const e = 0.686 + 0.314 * (1 - amount);
    const f = 0.168 - 0.168 * (1 - amount);
    const g = 0.272 - 0.272 * (1 - amount);
    const h = 0.534 - 0.534 * (1 - amount);
    const i = 0.131 + 0.869 * (1 - amount);
    return `
      <filter>
        <feColorMatrix type="matrix" values="${a} ${b} ${c} 0 0 ${d} ${e} ${f} 0 0 ${g} ${h} ${i} 0 0 0 0 0 1 0"/>
      </filter>
    `.trim();
}
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