First Commit

node_modules/culori/src/a98/convertXyz65ToA98.js

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+/*
+	Convert CIE XYZ D65 values to A98 RGB
+
+	References:
+		* https://drafts.csswg.org/css-color/#color-conversion-code
+		* http://www.brucelindbloom.com/index.html?Eqn_RGB_XYZ_Matrix.html
+*/
+
+const gamma = v => Math.pow(Math.abs(v), 256 / 563) * Math.sign(v);
+
+const convertXyz65ToA98 = ({ x, y, z, alpha }) => {
+	let res = {
+		mode: 'a98',
+		r: gamma(
+			x * 2.0415879038107465 -
+				y * 0.5650069742788597 -
+				0.3447313507783297 * z
+		),
+		g: gamma(
+			x * -0.9692436362808798 +
+				y * 1.8759675015077206 +
+				0.0415550574071756 * z
+		),
+		b: gamma(
+			x * 0.0134442806320312 -
+				y * 0.1183623922310184 +
+				1.0151749943912058 * z
+		)
+	};
+	if (alpha !== undefined) {
+		res.alpha = alpha;
+	}
+	return res;
+};
+
+export default convertXyz65ToA98;