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culori - npm Package Compare versions

Comparing version 0.6.0 to 0.7.0

624

build/culori.js

@@ -264,3 +264,5 @@ function parseNumber (color, len) {

var match;
return (match = color.match(hex)) ? parseNumber(parseInt(match[1], 16), match[1].length) : undefined;
return (match = color.match(hex))
? parseNumber(parseInt(match[1], 16), match[1].length)
: undefined;
}

@@ -301,150 +303,57 @@

/*
Interpolation of simple numeric values.
In linear interpolation, when one value is undefined,
the other value is returned.
function identity (d) { return d; }
Known issues:
var get_classes = function (arr) {
var classes = [];
for (var i = 0; i < arr.length - 1; i++) {
var a = arr[i];
var b = arr[i + 1];
* Spline interpolation can't interpolate when some values
are undefined and others aren't.
*/
function interpolateNumber () { return function (values) {
if (values.length === 2) {
// Linear Number interpolation
// ---------------------------
// If both values are undefined, return undefined
if (values[0] === undefined && values[1] === undefined) {
return undefined;
}
// if both values are defined, return them back
if (values[0] !== undefined && values[1] !== undefined) {
return values;
}
// if just one value is undefined, use the defined value
return values[0] === undefined ? values[1] : values[0];
if (a === undefined && b === undefined) {
classes.push(undefined);
} else if (a !== undefined && b !== undefined) {
classes.push([a, b]);
} else {
// Spline Number interpolation
// ---------------------------
// If all values are undefined, return undefined
if (
values[0] === undefined &&
values[1] === undefined &&
values[2] === undefined &&
values[3] === undefined
) {
return undefined;
}
// If all values are defined, return them back
// if (
// values[0] !== undefined &&
// values[1] !== undefined &&
// values[2] !== undefined &&
// values[3] !== undefined
// ) {
// return values;
// }
// If some values are defined and others are undefined...
// we need to decide what to do. Right now we send them back
// but probably we should do something smarter here.
return values;
classes.push(a !== undefined ? [a, a] : [b, b]);
}
}; }
}
/*
Interpolation of alpha values.
Colors with an implicit alpha of 1 will have an undefined alpha channel.
We try to keep it undefined through the interpolation process.
return classes;
};
Known issues:
function interpolateLinear (normalize, Ξ³) {
if ( normalize === void 0 ) normalize = identity;
if ( Ξ³ === void 0 ) Ξ³ = 1;
* For spline interpolation, alphas will be filled with 1 when undefined
(unless all four values in the interpolation are undefined).
*/
return function (arr) {
var normalized_arr = normalize(arr);
var classes = get_classes(normalized_arr);
function interpolateAlpha () { return function (values, t) {
if (values.length === 2) {
// Linear Alpha interpolation
// --------------------------
// If both alphas are undefined,
// or if t is next to the undefined alpha,
// return undefined to preserve assumption
// about undefined alpha being 1.
if (
(values[0] === undefined && values[1] === undefined) ||
(values[0] === undefined && t === 0) ||
(values[1] === undefined && t === 1)
) { return undefined; }
// If at least one alpha is defined,
// assume alpha = 1 for any undefined values.
return [ values[0] === undefined ? 1 : values[0], values[1] === undefined ? 1 : values[1]];
} else {
// Spline Alpha interpolation
// --------------------------
// If all values are undefined, return undefined
if (
values[0] === undefined &&
values[1] === undefined &&
values[2] === undefined &&
values[3] === undefined
) {
return undefined;
}
// If some values are defined and others are undefined,
// put alpha = 1 for any undefined values
return values.map(function (v) { return v === undefined ? 1 : v; });
}
}; }
function identity (d) { return d; }
function interpolateFunctionLinear (normalize, Ξ³) {
if ( normalize === void 0 ) normalize = identity;
if ( Ξ³ === void 0 ) Ξ³ = 1;
return function (arr, t) {
return function (t) {
t = Math.pow(t, Ξ³);
var cls = t * (arr.length - 1),
idx = Math.floor(cls),
a = arr[idx],
b = arr[idx + 1],
t0 = cls - idx;
var cls = t * classes.length;
var idx = t === 1 ? classes.length - 1 : Math.floor(cls);
var pair = classes[idx];
var values = normalize([a, b], t0);
return typeof values === 'object' ?
(a = values[0], b = values[1], a + t0 * (b - a)) :
values;
return pair === undefined
? undefined
: pair[0] + (cls - idx) * (pair[1] - pair[0]);
};
};
}
function interpolateAlpha (arr) { return arr.map(function (val, idx, arr) {
return val === undefined && arr[idx + 1] !== undefined ? 1 : val;
}); }
var rgbDef = {
mode: 'rgb',
channels: ['r', 'g', 'b', 'alpha'],
parsers: [ parseHex, parseRgb, parseNamed, parseTransparent ],
parsers: [parseHex, parseRgb, parseNamed, parseTransparent],
interpolate: {
r: interpolateFunctionLinear(interpolateNumber()),
g: interpolateFunctionLinear(interpolateNumber()),
b: interpolateFunctionLinear(interpolateNumber()),
alpha: interpolateFunctionLinear(interpolateAlpha())
r: interpolateLinear(),
g: interpolateLinear(),
b: interpolateLinear(),
alpha: interpolateLinear(interpolateAlpha)
}

@@ -494,3 +403,3 @@ };

},
input: {
input: {
rgb: convertRgbToLrgb

@@ -500,6 +409,6 @@ },

interpolate: {
r: interpolateFunctionLinear(interpolateNumber()),
g: interpolateFunctionLinear(interpolateNumber()),
b: interpolateFunctionLinear(interpolateNumber()),
alpha: interpolateFunctionLinear(interpolateAlpha())
r: interpolateLinear(),
g: interpolateLinear(),
b: interpolateLinear(),
alpha: interpolateLinear(interpolateAlpha)
}

@@ -582,81 +491,19 @@ };

/*
Interpolation of hue values.
Hues can be interpolated either on the shortest path around the cyllinder
or the normal (long) way.
Known issues:
* For spline interpolation, undefined behavior when some values are undefined
and others are not.
* Spline interpolation does not support the shortPath hue interpolation, but it
will normalize all hues to the [0, 360) range.
*/
function interpolateHue (shortPath) {
if ( shortPath === void 0 ) shortPath = true;
return function (values) {
if (values.length === 2) {
// Linear Hue interpolation
// ------------------------
// if both hues are undefined, return undefined
if (values[0] === undefined && values[1] === undefined) {
return undefined;
}
// if both hues are defined, interpolate between
// the start hue and the end hue brought closest
// to the start hue.
if (values[0] !== undefined && values[1] !== undefined) {
if (shortPath) {
var na = normalizeHue(values[0]);
var nb = normalizeHue(values[1]);
if (Math.abs(nb - na) > 180) {
// todo this result should be somehow normalized
return [na, nb - 360 * Math.sign(nb - na)];
}
return [na, nb];
}
return values;
}
// if just one hue is undefined, use the defined hue throughout
return values[0] === undefined ? values[1] : values[0];
} else {
// Spline Hue interpolation
// ------------------------
// If all values are undefined, return undefined
if (
values[0] === undefined &&
values[1] === undefined &&
values[2] === undefined &&
values[3] === undefined
) {
return undefined;
}
if (shortPath) {
return values.map(function (v) { return normalizeHue(v); });
}
// If some values are defined, return them back for now
return values;
function interpolateHue (arr) { return arr.map(function (val, idx, arr) {
var a = arr[idx - 1];
var b = arr[idx];
if (a !== undefined && b !== undefined) {
var na = normalizeHue(a);
var nb = normalizeHue(b);
return Math.abs(nb - na) > 180
? normalizeHue(nb - 360 * Math.sign(nb - na))
: val;
}
};
}
// todo hue short vs. hue long
// todo normalize hue before and after interpolateHue
return val;
}); }
var hslDef = {
mode: 'hsl',
output: {
rgb: convertHslToRgb
output: {
rgb: convertHslToRgb
},

@@ -667,8 +514,8 @@ input: {

channels: ['h', 's', 'l', 'alpha'],
parsers: [ parseHsl ],
parsers: [parseHsl],
interpolate: {
h: interpolateFunctionLinear(interpolateHue()),
s: interpolateFunctionLinear(interpolateNumber()),
l: interpolateFunctionLinear(interpolateNumber()),
alpha: interpolateFunctionLinear(interpolateAlpha())
h: interpolateLinear(interpolateHue),
s: interpolateLinear(),
l: interpolateLinear(),
alpha: interpolateLinear(interpolateAlpha)
}

@@ -723,4 +570,4 @@ };

mode: 'hsv',
output: {
rgb: convertHsvToRgb
output: {
rgb: convertHsvToRgb
},

@@ -732,6 +579,6 @@ input: {

interpolate: {
h: interpolateFunctionLinear(interpolateHue()),
s: interpolateFunctionLinear(interpolateNumber()),
v: interpolateFunctionLinear(interpolateNumber()),
alpha: interpolateFunctionLinear(interpolateAlpha())
h: interpolateLinear(interpolateHue),
s: interpolateLinear(),
v: interpolateLinear(),
alpha: interpolateLinear(interpolateAlpha)
}

@@ -824,4 +671,4 @@ };

mode: 'hsi',
output: {
rgb: convertHsiToRgb
output: {
rgb: convertHsiToRgb
},

@@ -833,6 +680,6 @@ input: {

interpolate: {
h: interpolateFunctionLinear(interpolateHue()),
s: interpolateFunctionLinear(interpolateNumber()),
i: interpolateFunctionLinear(interpolateNumber()),
alpha: interpolateFunctionLinear(interpolateAlpha())
h: interpolateLinear(interpolateHue),
s: interpolateLinear(),
i: interpolateLinear(),
alpha: interpolateLinear(interpolateAlpha)
}

@@ -881,3 +728,3 @@ };

function convertRgbToHwb (rgba) {
function convertRgbToHwb(rgba) {
var hsv = convertRgbToHsv(rgba);

@@ -923,4 +770,4 @@ if (hsv === undefined) { return undefined; }

mode: 'hwb',
output: {
rgb: convertHwbToRgb
output: {
rgb: convertHwbToRgb
},

@@ -931,8 +778,8 @@ input: {

channels: ['h', 'w', 'b', 'alpha'],
parsers: [ parseHwb ],
parsers: [parseHwb],
interpolate: {
h: interpolateFunctionLinear(interpolateHue()),
w: interpolateFunctionLinear(interpolateNumber()),
b: interpolateFunctionLinear(interpolateNumber()),
alpha: interpolateFunctionLinear(interpolateAlpha())
h: interpolateLinear(interpolateHue),
w: interpolateLinear(),
b: interpolateLinear(),
alpha: interpolateLinear(interpolateAlpha)
}

@@ -1097,6 +944,6 @@ };

interpolate: {
l: interpolateFunctionLinear(interpolateNumber()),
a: interpolateFunctionLinear(interpolateNumber()),
b: interpolateFunctionLinear(interpolateNumber()),
alpha: interpolateFunctionLinear(interpolateAlpha())
l: interpolateLinear(),
a: interpolateLinear(),
b: interpolateLinear(),
alpha: interpolateLinear(interpolateAlpha)
}

@@ -1184,3 +1031,3 @@ };

},
input: {
input: {
rgb: convertRgbToLch,

@@ -1190,8 +1037,8 @@ lch: convertLabToLch

channels: ['l', 'c', 'h', 'alpha'],
parsers: [ parseLch ],
parsers: [parseLch],
interpolate: {
h: interpolateFunctionLinear(interpolateHue()),
c: interpolateFunctionLinear(interpolateNumber()),
l: interpolateFunctionLinear(interpolateNumber()),
alpha: interpolateFunctionLinear(interpolateAlpha())
h: interpolateLinear(interpolateHue),
c: interpolateLinear(),
l: interpolateLinear(),
alpha: interpolateLinear(interpolateAlpha)
}

@@ -1317,6 +1164,6 @@ };

interpolate: {
h: interpolateFunctionLinear(interpolateHue()),
s: interpolateFunctionLinear(interpolateNumber()),
l: interpolateFunctionLinear(interpolateNumber()),
alpha: interpolateFunctionLinear(interpolateAlpha())
h: interpolateLinear(interpolateHue),
s: interpolateLinear(),
l: interpolateLinear(),
alpha: interpolateLinear(interpolateAlpha)
}

@@ -1432,3 +1279,3 @@ };

mode: 'dlab',
output: {
output: {
lab: convertDlabToLab,

@@ -1443,6 +1290,6 @@ rgb: convertDlabToRgb

interpolate: {
l: interpolateFunctionLinear(interpolateNumber()),
a: interpolateFunctionLinear(interpolateNumber()),
b: interpolateFunctionLinear(interpolateNumber()),
alpha: interpolateFunctionLinear(interpolateAlpha())
l: interpolateLinear(),
a: interpolateLinear(),
b: interpolateLinear(),
alpha: interpolateLinear(interpolateAlpha)
}

@@ -1457,3 +1304,3 @@ };

mode: 'dlch',
output: {
output: {
lab: convertDlchToLab,

@@ -1470,6 +1317,6 @@ dlab: convertDlchToDlab,

interpolate: {
l: interpolateFunctionLinear(interpolateNumber()),
c: interpolateFunctionLinear(interpolateNumber()),
h: interpolateFunctionLinear(interpolateHue()),
alpha: interpolateFunctionLinear(interpolateAlpha())
l: interpolateLinear(),
c: interpolateLinear(),
h: interpolateLinear(interpolateHue),
alpha: interpolateLinear(interpolateAlpha)
}

@@ -1538,6 +1385,6 @@ };

interpolate: {
y: interpolateFunctionLinear(interpolateNumber()),
i: interpolateFunctionLinear(interpolateNumber()),
q: interpolateFunctionLinear(interpolateNumber()),
alpha: interpolateFunctionLinear(interpolateAlpha())
y: interpolateLinear(),
i: interpolateLinear(),
q: interpolateLinear(),
alpha: interpolateLinear(interpolateAlpha)
}

@@ -1657,41 +1504,80 @@ };

function zip (colors, mode) {
function interpolate (colors, mode, interpolations) {
if ( mode === void 0 ) mode = 'rgb';
var channels = getModeDefinition(mode).channels;
var res = {
mode: mode
};
var loop = function ( i ) {
res[channels[i]] = colors.map(function (c) { return c[channels[i]]; });
};
var def = getModeDefinition(mode);
for (var i = 0; i < channels.length; i++) loop( i );
return res;
}
var converted = colors.map(converter(mode));
function interpolate (colors, mode, interpolations) {
if ( mode === void 0 ) mode = 'rgb';
var zipped = def.channels.reduce(function (res, channel) {
res[channel] = converted.map(function (color) { return color[channel]; });
return res;
}, {});
var zipped = zip(colors.map(converter(mode)), mode);
interpolations = Object.assign({}, getModeDefinition(mode).interpolate, interpolations);
var keys = Object.keys(interpolations);
// override the default interpolators
// from the color space definition with any custom ones
var interpolators = def.channels.reduce(
function (res, channel) {
res[channel] = res[channel](zipped[channel]);
return res;
},
Object.assign({}, def.interpolate,
interpolations)
);
return function (t) {
// clamp t to the [0, 1] interval
t = Math.min(Math.max(0, t), 1);
var res = { mode: mode }, val;
for (var i = 0; i < keys.length; i++) {
if ((val = interpolations[keys[i]](zipped[keys[i]], t)) !== undefined) {
res[keys[i]] = val;
}
}
return def.channels.reduce(
function (res, channel) {
var val = interpolators[channel](t);
if (val !== undefined) {
res[channel] = val;
}
return res;
},
{ mode: mode }
);
return res;
}
};
}
/*
====================
Spline interpolation
====================
Cosine interpolation
------------------------------------
*/
function cosine (normalize, Ξ³) {
if ( normalize === void 0 ) normalize = identity;
if ( Ξ³ === void 0 ) Ξ³ = 1;
return function (original_arr) {
var arr = normalize(arr);
return function (t) {
t = Math.pow(t, Ξ³);
var cls = t * (arr.length - 1),
idx = Math.floor(cls),
a = arr[idx],
b = arr[idx + 1],
t0 = cls - idx;
var values = normalize([a, b], t0);
if (typeof values === 'object') {
a = values[0];
b = values[1];
var c = (1 - Math.cos(t0 * Math.PI)) / 2;
return a * (1 - c) + b * c;
} else {
return values;
}
};
};
}
/*
Basis spline

@@ -1722,11 +1608,41 @@ ------------

return (
(1 - 3 * t + 3 * t2 - t3) * Vim2 +
(4 - 6 * t2 + 3 * t3) * Vim1 +
(1 + 3 * t + 3 * t2 - 3 * t3) * Vi +
t3 * Vip1
) / 6;
((1 - 3 * t + 3 * t2 - t3) * Vim2 +
(4 - 6 * t2 + 3 * t3) * Vim1 +
(1 + 3 * t + 3 * t2 - 3 * t3) * Vi +
t3 * Vip1) /
6
);
};
function splineBasis (
normalize,
type,
Ξ³
) {
if ( normalize === void 0 ) normalize = identity;
if ( type === void 0 ) type = 'default';
if ( Ξ³ === void 0 ) Ξ³ = 1;
return function (original_arr) {
var arr = normalize(original_arr);
return function (t) {
t = Math.pow(t, Ξ³);
var classes = arr.length - 1;
var i = t === 1 ? classes - 1 : Math.floor(t * classes);
return bspline(
i > 0 ? arr[i - 1] : 2 * arr[i] - arr[i + 1],
arr[i],
arr[i + 1],
i < classes - 1 ? arr[i + 2] : 2 * arr[i + 1] - arr[i],
(t - i / classes) * classes
);
};
};
}
var solve = function (v) {
var i;
var i;
var n = v.length - 1;

@@ -1736,86 +1652,40 @@ var c = new Array(n);

var sol = new Array(n);
c[1] = 1/4, _v[1] = (6 * v[1] - v[0])/4;
c[1] = 1 / 4;
_v[1] = (6 * v[1] - v[0]) / 4;
for (i = 2; i < n; ++i) {
c[i] = 1 / (4 - c[i-1]);
_v[i] = (6 * v[i] - (i == n-1 ? v[n] : 0) - _v[i-1]) * c[i];
c[i] = 1 / (4 - c[i - 1]);
_v[i] = (6 * v[i] - (i == n - 1 ? v[n] : 0) - _v[i - 1]) * c[i];
}
sol[0] = v[0];
sol[n] = v[n];
if (n - 1 > 0) {
sol[n-1] = _v[n-1];
sol[n - 1] = _v[n - 1];
}
for (i = n-2; i > 0; --i) {
sol[i] = _v[i] - c[i] * sol[i+1];
for (i = n - 2; i > 0; --i) {
sol[i] = _v[i] - c[i] * sol[i + 1];
}
return sol;
};
function interpolateFunctionSpline (normalize, method, Ξ³) {
if ( normalize === void 0 ) normalize = identity;
if ( method === void 0 ) method = 'bspline';
if ( Ξ³ === void 0 ) Ξ³ = 1;
function splineNatural (
normalize,
type,
Ξ³
) {
if ( normalize === void 0 ) normalize = identity;
if ( type === void 0 ) type = 'default';
if ( Ξ³ === void 0 ) Ξ³ = 1;
return function (arr, t) {
t = Math.pow(t, Ξ³);
var classes = arr.length - 1;
var i = t === 1 ? classes - 1 : Math.floor(t * classes);
if (method === 'natural') {
arr = solve(arr);
}
var Vim1 = arr[i];
var Vi = arr[i+1];
var Vim2 = i > 0 ? arr[i-1] : 2 * Vim1 - Vi;
var Vip1 = i < classes - 1 ? arr[i+2] : 2 * Vi - Vim1;
var v = normalize([Vim2, Vim1, Vi, Vip1]);
return typeof v === 'object' ?
bspline(v[0], v[1], v[2], v[3], (t - i / classes) * classes)
: v;
};
return function (original_arr) {
var arr = normalize(original_arr);
return splineBasis(identity, type, Ξ³)(solve(arr));
};
}
/*
Cosine interpolation
------------------------------------
*/
function interpolateFunctionCosine (normalize, Ξ³) {
if ( normalize === void 0 ) normalize = identity;
if ( Ξ³ === void 0 ) Ξ³ = 1;
return function (arr, t) {
t = Math.pow(t, Ξ³);
var cls = t * (arr.length - 1),
idx = Math.floor(cls),
a = arr[idx],
b = arr[idx + 1],
t0 = cls - idx;
var values = normalize([a, b], t0);
if (typeof values === 'object') {
a = values[0];
b = values[1];
var c = (1 - Math.cos(t0 * Math.PI)) / 2;
return (a * (1 - c) + b * c);
} else {
return values;
}
};
}
var monotone = function (v0, v1, v2, v3, h, t) {
var h2 = h * h;

@@ -1830,4 +1700,4 @@ var t2 = t * t;

return (
(s20 + s31 - 2 * s21) / h2 * t3 +
(3 * s21 - 2 * s20 - s31) / h * t2 +
((s20 + s31 - 2 * s21) / h2) * t3 +
((3 * s21 - 2 * s20 - s31) / h) * t2 +
s20 * t +

@@ -1838,8 +1708,10 @@ v1

function interpolateFunctionMonotone (normalize, Ξ³) {
if ( normalize === void 0 ) normalize = identity;
if ( Ξ³ === void 0 ) Ξ³ = 1;
function splineMonotone (normalize, Ξ³) {
if ( normalize === void 0 ) normalize = identity;
if ( Ξ³ === void 0 ) Ξ³ = 1;
return function (arr, t) {
return function (original_arr) {
var arr = normalize(original_arr);
return function (t) {
t = Math.pow(t, Ξ³);

@@ -1864,5 +1736,7 @@

return typeof v === 'object' ?
monotone(v[0], v[1], v[2], v[3], 1 / n, t - i / n) : v;
return typeof v === 'object'
? monotone(v[0], v[1], v[2], v[3], 1 / n, t - i / n)
: v;
};
};
}

@@ -2318,2 +2192,2 @@

export { defineMode, converter, hsl, hsv, hsi, hwb$1 as hwb, rgb$3 as rgb, lab$1 as lab, lch$2 as lch, lrgb, cubehelix, dlab, dlch, yiq, formatter, round, interpolate, interpolateNumber, interpolateAlpha, interpolateHue, interpolateFunctionLinear, interpolateFunctionSpline, interpolateFunctionCosine, interpolateFunctionMonotone, samples, zip, displayable, clamp, nearest, getModeDefinition, parse, differenceEuclidean, differenceCie76, differenceCie94, differenceCiede2000, differenceCmc, differenceDin99o, differenceKotsarenkoRamos, named as colorsNamed };
export { defineMode, converter, hsl, hsv, hsi, hwb$1 as hwb, rgb$3 as rgb, lab$1 as lab, lch$2 as lch, lrgb, cubehelix, dlab, dlch, yiq, formatter, round, interpolate, interpolateHue, interpolateAlpha, interpolateLinear, cosine as interpolateCosine, splineBasis as interpolateSplineBasis, splineNatural as interpolateSplineNatural, splineMonotone as interpolateSplineMonotone, samples, displayable, clamp, nearest, getModeDefinition, parse, differenceEuclidean, differenceCie76, differenceCie94, differenceCiede2000, differenceCmc, differenceDin99o, differenceKotsarenkoRamos, named as colorsNamed };

2

build/culori.umd.js

@@ -1,1 +0,1 @@

!function(i,r){"object"==typeof exports&&"undefined"!=typeof module?r(exports):"function"==typeof define&&define.amd?define(["exports"],r):r(i.culori={})}(this,function(i){"use strict";function r(i,r){if("number"==typeof i)return 3===r?{mode:"rgb",r:(i>>8&15|i>>4&240)/255,g:(i>>4&15|240&i)/255,b:(15&i|i<<4&240)/255}:4===r?{mode:"rgb",r:(i>>12&15|i>>8&240)/255,g:(i>>8&15|i>>4&240)/255,b:(i>>4&15|240&i)/255,alpha:(15&i|i<<4&240)/255}:6===r?{mode:"rgb",r:(i>>16&255)/255,g:(i>>8&255)/255,b:(255&i)/255}:8===r?{mode:"rgb",r:(i>>24&255)/255,g:(i>>16&255)/255,b:(i>>8&255)/255,alpha:(255&i)/255}:void 0}var 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q=s-l,x=w-m,I=m*w==0?0:k-y;I-=2*(I>Math.PI)*Math.PI,I+=2*(I<-Math.PI)*Math.PI;var P,E=2*Math.sqrt(m*w)*Math.sin(I/2),j=(l+s)/2,$=(m+w)/2;m*w==0?P=y+k:(P=(y+k)/2,P-=(Math.abs(y-k)>Math.PI)*Math.PI,P+=2*(P<0)*Math.PI);var R=Math.pow(j-50,2),C=1-.17*Math.cos(P-Math.PI/6)+.24*Math.cos(2*P)+.32*Math.cos(3*P+Math.PI/30)-.2*Math.cos(4*P-63*Math.PI/180),O=1+.015*R/Math.sqrt(20+R),z=1+.045*$,A=1+.015*$*C,N=30*Math.PI/180*Math.exp(-1*Math.pow((180/Math.PI*P-275)/25,2)),S=2*Math.sqrt(Math.pow($,7)/(Math.pow($,7)+Math.pow(25,7))),D=-1*Math.sin(2*N)*S;return Math.sqrt(Math.pow(q/(a*O),2)+Math.pow(x/(r*z),2)+Math.pow(E/(t*A),2)+D*x/(r*z)*E/(t*A))}},a.differenceCmc=function(a,r){void 0===a&&(a=1),void 0===r&&(r=1);var t=Pa("lab");return function(e,n){var o=t(e),i=o.l,h=o.a,l=o.b,u=Math.sqrt(h*h+l*l),d=Math.atan2(l,h);d+=2*Math.PI*(d<0);var c=t(n),s=c.l,p=c.a,b=c.b,v=Math.sqrt(p*p+b*b),g=Math.pow(i-s,2),f=Math.pow(u-v,2),M=Math.pow(h-p,2)+Math.pow(l-b,2)-f,m=Math.sqrt(Math.pow(u,4)/(Math.pow(u,4)+1900)),w=i<16?.511:.040975*i/(1+.01765*i),y=.0638*u/(1+.0131*u)+.638,k=y*(m*(d>=164/180*Math.PI&&d<=345/180*Math.PI?.56+Math.abs(.2*Math.cos(d+168/180*Math.PI)):.36+Math.abs(.4*Math.cos(d+35/180*Math.PI)))+1-m);return Math.sqrt(g/Math.pow(a*w,2)+f/Math.pow(r*y,2)+M/Math.pow(k,2))}},a.differenceDin99o=function(){return Ka("dlab")},a.differenceKotsarenkoRamos=function(){return Ka("yiq",[.5053,.299,.1957])},a.colorsNamed=t,Object.defineProperty(a,"__esModule",{value:!0})});

6

CHANGELOG.md
## Culori Changelog
### 0.7.0
#### Breaking changes
Revamped the interpolation UI to be terser ([#55](https://github.com/Evercoder/culori/issues/55)). The interpolation functions have been renamed, and their implementation has been refactored.
### 0.6.0

@@ -4,0 +10,0 @@

2

package.json
{
"name": "culori",
"version": "0.6.0",
"version": "0.7.0",
"main": "build/culori.umd.js",

@@ -5,0 +5,0 @@ "browser": "build/culori.umd.js",

50

README.md

@@ -212,22 +212,18 @@ # Culori

> πŸ•³ expand section
<a name="culoriInterpolateLinear" href="#culoriInterpolateLinear">#</a> culori.**interpolateLinear** [<>](https://github.com/evercoder/culori/blob/master/src/interpolate/linear.js 'Source')
<a name="culoriInterpolateFunctionLinear" href="#culoriInterpolateFunctionLinear">#</a> culori.**interpolateFunctionLinear** [<>](https://github.com/evercoder/culori/blob/master/src/interpolate/interpolateFunctionLinear.js 'Source')
<a name="culoriInterpolateSplineBasis" href="#culoriInterpolateSplineBasis">#</a> culori.**interpolateSplineBasis** [<>](https://github.com/evercoder/culori/blob/master/src/interpolate/splineBasis.js 'Source')
<a name="culoriInterpolateFunctionSpline" href="#culoriInterpolateFunctionSpline">#</a> culori.**interpolateFunctionSpline** [<>](https://github.com/evercoder/culori/blob/master/src/interpolate/interpolateFunctionSpline.js 'Source')
<a name="culoriInterpolateSplineNatural" href="#culoriInterpolateSplineNatural">#</a> culori.**interpolateSplineNatural** [<>](https://github.com/evercoder/culori/blob/master/src/interpolate/splineNatural.js 'Source')
<a name="culoriInterpolateFunctionMonotone" href="#culoriInterpolateFunctionMonotone">#</a> culori.**interpolateFunctionMonotone** [<>](https://github.com/evercoder/culori/blob/master/src/interpolate/interpolateFunctionMonotone.js 'Source')
<a name="culoriInterpolateSplineMonotone" href="#culoriInterpolateSplineMonotone">#</a> culori.**interpolateSplineMonotone** [<>](https://github.com/evercoder/culori/blob/master/src/interpolate/splineMonotone.js 'Source')
<a name="culoriInterpolateFunctionCosine" href="#culoriInterpolateFunctionCosine">#</a> culori.**interpolateFunctionCosine** [<>](https://github.com/evercoder/culori/blob/master/src/interpolate/interpolateFunctionCosine.js 'Source')
<a name="culoriInterpolateCosine" href="#culoriInterpolateCosine">#</a> culori.**interpolateCosine** [<>](https://github.com/evercoder/culori/blob/master/src/interpolate/cosine.js 'Source')
#### Interpolation modes
> πŸ•³ expand section
<a name="culoriInterpolateHue" href="#culoriInterpolateHue">#</a> culori.**interpolateHue** [<>](https://github.com/evercoder/culori/blob/master/src/interpolate/hue.js 'Source')
<a name="culoriInterpolateNumber" href="#culoriInterpolateNumber">#</a> culori.**interpolateNumber** [<>](https://github.com/evercoder/culori/blob/master/src/interpolate/interpolateNumber.js 'Source')
<a name="culoriInterpolateAlpha" href="#culoriInterpolateAlpha">#</a> culori.**interpolateAlpha** [<>](https://github.com/evercoder/culori/blob/master/src/interpolate/alpha.js 'Source')
<a name="culoriInterpolateHue" href="#culoriInterpolateHue">#</a> culori.**interpolateHue** [<>](https://github.com/evercoder/culori/blob/master/src/interpolate/interpolateHue.js 'Source')
<a name="culoriInterpolateNumber" href="#culoriInterpolateNumber">#</a> culori.**interpolateAlpha** [<>](https://github.com/evercoder/culori/blob/master/src/interpolate/interpolateNumber.js 'Source')
### Difference

@@ -356,16 +352,18 @@

| Channel | Range | Description |
| ------- | ----- | ----------- |
| `l` | ? | Lightness |
| `a` | ? |
| `b` | ? |
| Channel | Range | Description |
| ------- | ---------------------- | --------------------- |
| `l` | `[0 β€” 100]` | Lightness |
| `a` | `[-79.2872, 93.55]` | Green–red component |
| `b` | `[-112.0294, 93.3884]` | Blue–yellow component |
#### `lch`
| Channel | Range | Description |
| ------- | ----- | ----------- |
| `l` | ? | Lightness |
| `c` | ? | Chroma |
| `h` | ? | Hue |
| Channel | Range | Description |
| ------- | --------------- | ----------- |
| `l` | `[0 - 100]` | Lightness |
| `c` | `[0 - 131.207]` | Chroma |
| `h` | `[0 - 360]` | Hue |
> πŸ’‘ The range for the `a` and `b` channels in Lab, and the `c` channel in LCh, depend on the specific implementation. I've obtained the ranges from the tables above by converting all sRGB colors defined by `r, g, b ∈ β„• β‹‚ [0, 255]` into Lab and LCh respectively.
### DIN99 Lab / LCh

@@ -417,7 +415,7 @@

| Channel | Range | Description |
| ------- | ---------- | ------------------------------------------------------------------------ |
| `h` | `[0, 360)` | Hue (Based on _start color_ and _rotations_ as defined in Green's paper) |
| `s` | `[0, 1]` | Saturation (Called _hue_ in op. cit.) |
| `l` | `[0, 1]` | Lightness |
| Channel | Range | Description |
| ------- | ------------- | ------------------------------------------------------------------------ |
| `h` | `[0, 360)` | Hue (Based on _start color_ and _rotations_ as defined in Green's paper) |
| `s` | `[0, 4.6143]` | Saturation (Called _hue_ in op. cit.) |
| `l` | `[0, 1]` | Lightness |

@@ -424,0 +422,0 @@ ## Culori Recipes

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