@antv/x6
Version:
JavaScript diagramming library that uses SVG and HTML for rendering.
18 lines • 694 B
JavaScript
import { getNumber } from './util';
export function grayScale(args = {}) {
const amount = getNumber(args.amount, 1);
const a = 0.2126 + 0.7874 * (1 - amount);
const b = 0.7152 - 0.7152 * (1 - amount);
const c = 0.0722 - 0.0722 * (1 - amount);
const d = 0.2126 - 0.2126 * (1 - amount);
const e = 0.7152 + 0.2848 * (1 - amount);
const f = 0.0722 - 0.0722 * (1 - amount);
const g = 0.2126 - 0.2126 * (1 - amount);
const h = 0.0722 + 0.9278 * (1 - amount);
return `
<filter>
<feColorMatrix type="matrix" values="${a} ${b} ${c} 0 0 ${d} ${e} ${f} 0 0 ${g} ${b} ${h} 0 0 0 0 0 1 0"/>
</filter>
`.trim();
}
//# sourceMappingURL=gray-scale.js.map