@macrostrat/column-components
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React rendering primitives for stratigraphic columns
108 lines (107 loc) • 2.64 kB
JavaScript
;
Object.defineProperties(exports, { __esModule: { value: true }, [Symbol.toStringTag]: { value: "Module" } });
const labConstants = {
// Corresponds roughly to RGB brighter/darker
Kn: 18,
// D65 standard referent
labWhitePoint: "d65",
Xn: 0.95047,
Yn: 1,
Zn: 1.08883,
kE: 216 / 24389,
kKE: 8,
kK: 24389 / 27,
RefWhiteRGB: {
// sRGB
X: 0.95047,
Y: 1,
Z: 1.08883
},
MtxRGB2XYZ: {
m00: 0.4124564390896922,
m01: 0.21267285140562253,
m02: 0.0193338955823293,
m10: 0.357576077643909,
m11: 0.715152155287818,
m12: 0.11919202588130297,
m20: 0.18043748326639894,
m21: 0.07217499330655958,
m22: 0.9503040785363679
},
MtxXYZ2RGB: {
m00: 3.2404541621141045,
m01: -0.9692660305051868,
m02: 0.055643430959114726,
m10: -1.5371385127977166,
m11: 1.8760108454466942,
m12: -0.2040259135167538,
m20: -0.498531409556016,
m21: 0.041556017530349834,
m22: 1.0572251882231791
},
// used in rgb2xyz
As: 0.9414285350000001,
Bs: 1.040417467,
Cs: 1.089532651,
MtxAdaptMa: {
m00: 0.8951,
m01: -0.7502,
m02: 0.0389,
m10: 0.2664,
m11: 1.7135,
m12: -0.0685,
m20: -0.1614,
m21: 0.0367,
m22: 1.0296
},
MtxAdaptMaI: {
m00: 0.9869929054667123,
m01: 0.43230526972339456,
m02: -0.008528664575177328,
m10: -0.14705425642099013,
m11: 0.5183602715367776,
m12: 0.04004282165408487,
m20: 0.15996265166373125,
m21: 0.0492912282128556,
m22: 0.9684866957875502
}
};
const ILLUMINANTS = /* @__PURE__ */ new Map([
// ASTM E308-01
["a", [1.0985, 0.35585]],
// Wyszecki & Stiles, p. 769
["b", [1.0985, 0.35585]],
// C ASTM E308-01
["c", [0.98074, 1.18232]],
// D50 (ASTM E308-01)
["d50", [0.96422, 0.82521]],
// D55 (ASTM E308-01)
["d55", [0.95682, 0.92149]],
// D65 (ASTM E308-01)
["d65", [0.95047, 1.08883]],
// E (ASTM E308-01)
["e", [1, 1, 1]],
// F2 (ASTM E308-01)
["f2", [0.99186, 0.67393]],
// F7 (ASTM E308-01)
["f7", [0.95041, 1.08747]],
// F11 (ASTM E308-01)
["f11", [1.00962, 0.6435]],
["icc", [0.96422, 0.82521]]
]);
function setLabWhitePoint(name) {
const ill = ILLUMINANTS.get(String(name).toLowerCase());
if (!ill) {
throw new Error("unknown Lab illuminant " + name);
}
labConstants.labWhitePoint = name;
labConstants.Xn = ill[0];
labConstants.Zn = ill[1];
}
function getLabWhitePoint() {
return labConstants.labWhitePoint;
}
exports.default = labConstants;
exports.getLabWhitePoint = getLabWhitePoint;
exports.setLabWhitePoint = setLabWhitePoint;
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