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added CMYK conversion #222

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added CMYK conversion #222

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46d0657
Update tinycolor.js
MeltyMooncakes Dec 28, 2020
cc68c41
Update tinycolor.js
MeltyMooncakes Dec 28, 2020
e837a55
Update tinycolor.js
MeltyMooncakes Dec 31, 2020
093c0d6
Update tinycolor.js
MeltyMooncakes Dec 31, 2020
6b81d8a
Update tinycolor.js
MeltyMooncakes Dec 31, 2020
37572c5
Update tinycolor.js
MeltyMooncakes Jan 10, 2021
48310bc
Update tinycolor.js
MeltyMooncakes Jan 10, 2021
673e19e
Update tinycolor.js
MeltyMooncakes Jan 10, 2021
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22 changes: 22 additions & 0 deletions tinycolor.js
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Original file line number Diff line number Diff line change
Expand Up @@ -140,6 +140,13 @@ tinycolor.prototype = {
"rgb(" + mathRound(bound01(this._r, 255) * 100) + "%, " + mathRound(bound01(this._g, 255) * 100) + "%, " + mathRound(bound01(this._b, 255) * 100) + "%)" :
"rgba(" + mathRound(bound01(this._r, 255) * 100) + "%, " + mathRound(bound01(this._g, 255) * 100) + "%, " + mathRound(bound01(this._b, 255) * 100) + "%, " + this._roundA + ")";
},
toCmyk: function() {
return rgbToCmyk(this._r, this._g, this._b);
},
toCmykString: function() {
var cmyk = rgbToCmyk(this._r, this._g, this._b);
return "cmyk(" + Math.round(cmyk.c * 100) + "," + Math.round(cmyk.m * 100) + "," + Math.round(cmyk.y * 100) + "," + Math.round(cmyk.k * 100) + ")";
},
toName: function() {
if (this._a === 0) {
return "transparent";
Expand Down Expand Up @@ -548,6 +555,21 @@ function rgbaToArgbHex(r, g, b, a) {
return hex.join("");
}

// `rgbToCmyk`
// Converts RGB color to CMYK
function rgbToCmyk(r, g, b) {
var R = r/255,
G = g/255,
B = b/255,
K = 1-Math.max(R, G, B);
return {
C: (1-R-K) / (1-K),
M: (1-B-K) / (1-K),
Y: (1-G-K) / (1-K),
K: K
};
}

// `equals`
// Can be called with any tinycolor input
tinycolor.equals = function (color1, color2) {
Expand Down