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Diffstat (limited to 'node_modules/color-convert')
| -rw-r--r-- | node_modules/color-convert/CHANGELOG.md | 54 | ||||
| -rw-r--r-- | node_modules/color-convert/LICENSE | 21 | ||||
| -rw-r--r-- | node_modules/color-convert/README.md | 68 | ||||
| -rw-r--r-- | node_modules/color-convert/conversions.js | 839 | ||||
| -rw-r--r-- | node_modules/color-convert/index.js | 81 | ||||
| -rw-r--r-- | node_modules/color-convert/package.json | 48 | ||||
| -rw-r--r-- | node_modules/color-convert/route.js | 97 |
7 files changed, 1208 insertions, 0 deletions
diff --git a/node_modules/color-convert/CHANGELOG.md b/node_modules/color-convert/CHANGELOG.md new file mode 100644 index 0000000..0a7bce4 --- /dev/null +++ b/node_modules/color-convert/CHANGELOG.md @@ -0,0 +1,54 @@ +# 1.0.0 - 2016-01-07 + +- Removed: unused speed test +- Added: Automatic routing between previously unsupported conversions +([#27](https://github.com/Qix-/color-convert/pull/27)) +- Removed: `xxx2xxx()` and `xxx2xxxRaw()` functions +([#27](https://github.com/Qix-/color-convert/pull/27)) +- Removed: `convert()` class +([#27](https://github.com/Qix-/color-convert/pull/27)) +- Changed: all functions to lookup dictionary +([#27](https://github.com/Qix-/color-convert/pull/27)) +- Changed: `ansi` to `ansi256` +([#27](https://github.com/Qix-/color-convert/pull/27)) +- Fixed: argument grouping for functions requiring only one argument +([#27](https://github.com/Qix-/color-convert/pull/27)) + +# 0.6.0 - 2015-07-23 + +- Added: methods to handle +[ANSI](https://en.wikipedia.org/wiki/ANSI_escape_code#Colors) 16/256 colors: + - rgb2ansi16 + - rgb2ansi + - hsl2ansi16 + - hsl2ansi + - hsv2ansi16 + - hsv2ansi + - hwb2ansi16 + - hwb2ansi + - cmyk2ansi16 + - cmyk2ansi + - keyword2ansi16 + - keyword2ansi + - ansi162rgb + - ansi162hsl + - ansi162hsv + - ansi162hwb + - ansi162cmyk + - ansi162keyword + - ansi2rgb + - ansi2hsl + - ansi2hsv + - ansi2hwb + - ansi2cmyk + - ansi2keyword +([#18](https://github.com/harthur/color-convert/pull/18)) + +# 0.5.3 - 2015-06-02 + +- Fixed: hsl2hsv does not return `NaN` anymore when using `[0,0,0]` +([#15](https://github.com/harthur/color-convert/issues/15)) + +--- + +Check out commit logs for older releases diff --git a/node_modules/color-convert/LICENSE b/node_modules/color-convert/LICENSE new file mode 100644 index 0000000..5b4c386 --- /dev/null +++ b/node_modules/color-convert/LICENSE @@ -0,0 +1,21 @@ +Copyright (c) 2011-2016 Heather Arthur <fayearthur@gmail.com> + +Permission is hereby granted, free of charge, to any person obtaining +a copy of this software and associated documentation files (the +"Software"), to deal in the Software without restriction, including +without limitation the rights to use, copy, modify, merge, publish, +distribute, sublicense, and/or sell copies of the Software, and to +permit persons to whom the Software is furnished to do so, subject to +the following conditions: + +The above copyright notice and this permission notice shall be +included in all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, +EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND +NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE +LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION +OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION +WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + diff --git a/node_modules/color-convert/README.md b/node_modules/color-convert/README.md new file mode 100644 index 0000000..d4b08fc --- /dev/null +++ b/node_modules/color-convert/README.md @@ -0,0 +1,68 @@ +# color-convert + +[](https://travis-ci.org/Qix-/color-convert) + +Color-convert is a color conversion library for JavaScript and node. +It converts all ways between `rgb`, `hsl`, `hsv`, `hwb`, `cmyk`, `ansi`, `ansi16`, `hex` strings, and CSS `keyword`s (will round to closest): + +```js +var convert = require('color-convert'); + +convert.rgb.hsl(140, 200, 100); // [96, 48, 59] +convert.keyword.rgb('blue'); // [0, 0, 255] + +var rgbChannels = convert.rgb.channels; // 3 +var cmykChannels = convert.cmyk.channels; // 4 +var ansiChannels = convert.ansi16.channels; // 1 +``` + +# Install + +```console +$ npm install color-convert +``` + +# API + +Simply get the property of the _from_ and _to_ conversion that you're looking for. + +All functions have a rounded and unrounded variant. By default, return values are rounded. To get the unrounded (raw) results, simply tack on `.raw` to the function. + +All 'from' functions have a hidden property called `.channels` that indicates the number of channels the function expects (not including alpha). + +```js +var convert = require('color-convert'); + +// Hex to LAB +convert.hex.lab('DEADBF'); // [ 76, 21, -2 ] +convert.hex.lab.raw('DEADBF'); // [ 75.56213190997677, 20.653827952644754, -2.290532499330533 ] + +// RGB to CMYK +convert.rgb.cmyk(167, 255, 4); // [ 35, 0, 98, 0 ] +convert.rgb.cmyk.raw(167, 255, 4); // [ 34.509803921568626, 0, 98.43137254901961, 0 ] +``` + +### Arrays +All functions that accept multiple arguments also support passing an array. + +Note that this does **not** apply to functions that convert from a color that only requires one value (e.g. `keyword`, `ansi256`, `hex`, etc.) + +```js +var convert = require('color-convert'); + +convert.rgb.hex(123, 45, 67); // '7B2D43' +convert.rgb.hex([123, 45, 67]); // '7B2D43' +``` + +## Routing + +Conversions that don't have an _explicitly_ defined conversion (in [conversions.js](conversions.js)), but can be converted by means of sub-conversions (e.g. XYZ -> **RGB** -> CMYK), are automatically routed together. This allows just about any color model supported by `color-convert` to be converted to any other model, so long as a sub-conversion path exists. This is also true for conversions requiring more than one step in between (e.g. LCH -> **LAB** -> **XYZ** -> **RGB** -> Hex). + +Keep in mind that extensive conversions _may_ result in a loss of precision, and exist only to be complete. For a list of "direct" (single-step) conversions, see [conversions.js](conversions.js). + +# Contribute + +If there is a new model you would like to support, or want to add a direct conversion between two existing models, please send us a pull request. + +# License +Copyright © 2011-2016, Heather Arthur and Josh Junon. Licensed under the [MIT License](LICENSE). diff --git a/node_modules/color-convert/conversions.js b/node_modules/color-convert/conversions.js new file mode 100644 index 0000000..2657f26 --- /dev/null +++ b/node_modules/color-convert/conversions.js @@ -0,0 +1,839 @@ +/* MIT license */ +/* eslint-disable no-mixed-operators */ +const cssKeywords = require('color-name'); + +// NOTE: conversions should only return primitive values (i.e. arrays, or +// values that give correct `typeof` results). +// do not use box values types (i.e. Number(), String(), etc.) + +const reverseKeywords = {}; +for (const key of Object.keys(cssKeywords)) { + reverseKeywords[cssKeywords[key]] = key; +} + +const convert = { + rgb: {channels: 3, labels: 'rgb'}, + hsl: {channels: 3, labels: 'hsl'}, + hsv: {channels: 3, labels: 'hsv'}, + hwb: {channels: 3, labels: 'hwb'}, + cmyk: {channels: 4, labels: 'cmyk'}, + xyz: {channels: 3, labels: 'xyz'}, + lab: {channels: 3, labels: 'lab'}, + lch: {channels: 3, labels: 'lch'}, + hex: {channels: 1, labels: ['hex']}, + keyword: {channels: 1, labels: ['keyword']}, + ansi16: {channels: 1, labels: ['ansi16']}, + ansi256: {channels: 1, labels: ['ansi256']}, + hcg: {channels: 3, labels: ['h', 'c', 'g']}, + apple: {channels: 3, labels: ['r16', 'g16', 'b16']}, + gray: {channels: 1, labels: ['gray']} +}; + +module.exports = convert; + +// Hide .channels and .labels properties +for (const model of Object.keys(convert)) { + if (!('channels' in convert[model])) { + throw new Error('missing channels property: ' + model); + } + + if (!('labels' in convert[model])) { + throw new Error('missing channel labels property: ' + model); + } + + if (convert[model].labels.length !== convert[model].channels) { + throw new Error('channel and label counts mismatch: ' + model); + } + + const {channels, labels} = convert[model]; + delete convert[model].channels; + delete convert[model].labels; + Object.defineProperty(convert[model], 'channels', {value: channels}); + Object.defineProperty(convert[model], 'labels', {value: labels}); +} + +convert.rgb.hsl = function (rgb) { + const r = rgb[0] / 255; + const g = rgb[1] / 255; + const b = rgb[2] / 255; + const min = Math.min(r, g, b); + const max = Math.max(r, g, b); + const delta = max - min; + let h; + let s; + + if (max === min) { + h = 0; + } else if (r === max) { + h = (g - b) / delta; + } else if (g === max) { + h = 2 + (b - r) / delta; + } else if (b === max) { + h = 4 + (r - g) / delta; + } + + h = Math.min(h * 60, 360); + + if (h < 0) { + h += 360; + } + + const l = (min + max) / 2; + + if (max === min) { + s = 0; + } else if (l <= 0.5) { + s = delta / (max + min); + } else { + s = delta / (2 - max - min); + } + + return [h, s * 100, l * 100]; +}; + +convert.rgb.hsv = function (rgb) { + let rdif; + let gdif; + let bdif; + let h; + let s; + + const r = rgb[0] / 255; + const g = rgb[1] / 255; + const b = rgb[2] / 255; + const v = Math.max(r, g, b); + const diff = v - Math.min(r, g, b); + const diffc = function (c) { + return (v - c) / 6 / diff + 1 / 2; + }; + + if (diff === 0) { + h = 0; + s = 0; + } else { + s = diff / v; + rdif = diffc(r); + gdif = diffc(g); + bdif = diffc(b); + + if (r === v) { + h = bdif - gdif; + } else if (g === v) { + h = (1 / 3) + rdif - bdif; + } else if (b === v) { + h = (2 / 3) + gdif - rdif; + } + + if (h < 0) { + h += 1; + } else if (h > 1) { + h -= 1; + } + } + + return [ + h * 360, + s * 100, + v * 100 + ]; +}; + +convert.rgb.hwb = function (rgb) { + const r = rgb[0]; + const g = rgb[1]; + let b = rgb[2]; + const h = convert.rgb.hsl(rgb)[0]; + const w = 1 / 255 * Math.min(r, Math.min(g, b)); + + b = 1 - 1 / 255 * Math.max(r, Math.max(g, b)); + + return [h, w * 100, b * 100]; +}; + +convert.rgb.cmyk = function (rgb) { + const r = rgb[0] / 255; + const g = rgb[1] / 255; + const b = rgb[2] / 255; + + const k = Math.min(1 - r, 1 - g, 1 - b); + const c = (1 - r - k) / (1 - k) || 0; + const m = (1 - g - k) / (1 - k) || 0; + const y = (1 - b - k) / (1 - k) || 0; + + return [c * 100, m * 100, y * 100, k * 100]; +}; + +function comparativeDistance(x, y) { + /* + See https://en.m.wikipedia.org/wiki/Euclidean_distance#Squared_Euclidean_distance + */ + return ( + ((x[0] - y[0]) ** 2) + + ((x[1] - y[1]) ** 2) + + ((x[2] - y[2]) ** 2) + ); +} + +convert.rgb.keyword = function (rgb) { + const reversed = reverseKeywords[rgb]; + if (reversed) { + return reversed; + } + + let currentClosestDistance = Infinity; + let currentClosestKeyword; + + for (const keyword of Object.keys(cssKeywords)) { + const value = cssKeywords[keyword]; + + // Compute comparative distance + const distance = comparativeDistance(rgb, value); + + // Check if its less, if so set as closest + if (distance < currentClosestDistance) { + currentClosestDistance = distance; + currentClosestKeyword = keyword; + } + } + + return currentClosestKeyword; +}; + +convert.keyword.rgb = function (keyword) { + return cssKeywords[keyword]; +}; + +convert.rgb.xyz = function (rgb) { + let r = rgb[0] / 255; + let g = rgb[1] / 255; + let b = rgb[2] / 255; + + // Assume sRGB + r = r > 0.04045 ? (((r + 0.055) / 1.055) ** 2.4) : (r / 12.92); + g = g > 0.04045 ? (((g + 0.055) / 1.055) ** 2.4) : (g / 12.92); + b = b > 0.04045 ? (((b + 0.055) / 1.055) ** 2.4) : (b / 12.92); + + const x = (r * 0.4124) + (g * 0.3576) + (b * 0.1805); + const y = (r * 0.2126) + (g * 0.7152) + (b * 0.0722); + const z = (r * 0.0193) + (g * 0.1192) + (b * 0.9505); + + return [x * 100, y * 100, z * 100]; +}; + +convert.rgb.lab = function (rgb) { + const xyz = convert.rgb.xyz(rgb); + let x = xyz[0]; + let y = xyz[1]; + let z = xyz[2]; + + x /= 95.047; + y /= 100; + z /= 108.883; + + x = x > 0.008856 ? (x ** (1 / 3)) : (7.787 * x) + (16 / 116); + y = y > 0.008856 ? (y ** (1 / 3)) : (7.787 * y) + (16 / 116); + z = z > 0.008856 ? (z ** (1 / 3)) : (7.787 * z) + (16 / 116); + + const l = (116 * y) - 16; + const a = 500 * (x - y); + const b = 200 * (y - z); + + return [l, a, b]; +}; + +convert.hsl.rgb = function (hsl) { + const h = hsl[0] / 360; + const s = hsl[1] / 100; + const l = hsl[2] / 100; + let t2; + let t3; + let val; + + if (s === 0) { + val = l * 255; + return [val, val, val]; + } + + if (l < 0.5) { + t2 = l * (1 + s); + } else { + t2 = l + s - l * s; + } + + const t1 = 2 * l - t2; + + const rgb = [0, 0, 0]; + for (let i = 0; i < 3; i++) { + t3 = h + 1 / 3 * -(i - 1); + if (t3 < 0) { + t3++; + } + + if (t3 > 1) { + t3--; + } + + if (6 * t3 < 1) { + val = t1 + (t2 - t1) * 6 * t3; + } else if (2 * t3 < 1) { + val = t2; + } else if (3 * t3 < 2) { + val = t1 + (t2 - t1) * (2 / 3 - t3) * 6; + } else { + val = t1; + } + + rgb[i] = val * 255; + } + + return rgb; +}; + +convert.hsl.hsv = function (hsl) { + const h = hsl[0]; + let s = hsl[1] / 100; + let l = hsl[2] / 100; + let smin = s; + const lmin = Math.max(l, 0.01); + + l *= 2; + s *= (l <= 1) ? l : 2 - l; + smin *= lmin <= 1 ? lmin : 2 - lmin; + const v = (l + s) / 2; + const sv = l === 0 ? (2 * smin) / (lmin + smin) : (2 * s) / (l + s); + + return [h, sv * 100, v * 100]; +}; + +convert.hsv.rgb = function (hsv) { + const h = hsv[0] / 60; + const s = hsv[1] / 100; + let v = hsv[2] / 100; + const hi = Math.floor(h) % 6; + + const f = h - Math.floor(h); + const p = 255 * v * (1 - s); + const q = 255 * v * (1 - (s * f)); + const t = 255 * v * (1 - (s * (1 - f))); + v *= 255; + + switch (hi) { + case 0: + return [v, t, p]; + case 1: + return [q, v, p]; + case 2: + return [p, v, t]; + case 3: + return [p, q, v]; + case 4: + return [t, p, v]; + case 5: + return [v, p, q]; + } +}; + +convert.hsv.hsl = function (hsv) { + const h = hsv[0]; + const s = hsv[1] / 100; + const v = hsv[2] / 100; + const vmin = Math.max(v, 0.01); + let sl; + let l; + + l = (2 - s) * v; + const lmin = (2 - s) * vmin; + sl = s * vmin; + sl /= (lmin <= 1) ? lmin : 2 - lmin; + sl = sl || 0; + l /= 2; + + return [h, sl * 100, l * 100]; +}; + +// http://dev.w3.org/csswg/css-color/#hwb-to-rgb +convert.hwb.rgb = function (hwb) { + const h = hwb[0] / 360; + let wh = hwb[1] / 100; + let bl = hwb[2] / 100; + const ratio = wh + bl; + let f; + + // Wh + bl cant be > 1 + if (ratio > 1) { + wh /= ratio; + bl /= ratio; + } + + const i = Math.floor(6 * h); + const v = 1 - bl; + f = 6 * h - i; + + if ((i & 0x01) !== 0) { + f = 1 - f; + } + + const n = wh + f * (v - wh); // Linear interpolation + + let r; + let g; + let b; + /* eslint-disable max-statements-per-line,no-multi-spaces */ + switch (i) { + default: + case 6: + case 0: r = v; g = n; b = wh; break; + case 1: r = n; g = v; b = wh; break; + case 2: r = wh; g = v; b = n; break; + case 3: r = wh; g = n; b = v; break; + case 4: r = n; g = wh; b = v; break; + case 5: r = v; g = wh; b = n; break; + } + /* eslint-enable max-statements-per-line,no-multi-spaces */ + + return [r * 255, g * 255, b * 255]; +}; + +convert.cmyk.rgb = function (cmyk) { + const c = cmyk[0] / 100; + const m = cmyk[1] / 100; + const y = cmyk[2] / 100; + const k = cmyk[3] / 100; + + const r = 1 - Math.min(1, c * (1 - k) + k); + const g = 1 - Math.min(1, m * (1 - k) + k); + const b = 1 - Math.min(1, y * (1 - k) + k); + + return [r * 255, g * 255, b * 255]; +}; + +convert.xyz.rgb = function (xyz) { + const x = xyz[0] / 100; + const y = xyz[1] / 100; + const z = xyz[2] / 100; + let r; + let g; + let b; + + r = (x * 3.2406) + (y * -1.5372) + (z * -0.4986); + g = (x * -0.9689) + (y * 1.8758) + (z * 0.0415); + b = (x * 0.0557) + (y * -0.2040) + (z * 1.0570); + + // Assume sRGB + r = r > 0.0031308 + ? ((1.055 * (r ** (1.0 / 2.4))) - 0.055) + : r * 12.92; + + g = g > 0.0031308 + ? ((1.055 * (g ** (1.0 / 2.4))) - 0.055) + : g * 12.92; + + b = b > 0.0031308 + ? ((1.055 * (b ** (1.0 / 2.4))) - 0.055) + : b * 12.92; + + r = Math.min(Math.max(0, r), 1); + g = Math.min(Math.max(0, g), 1); + b = Math.min(Math.max(0, b), 1); + + return [r * 255, g * 255, b * 255]; +}; + +convert.xyz.lab = function (xyz) { + let x = xyz[0]; + let y = xyz[1]; + let z = xyz[2]; + + x /= 95.047; + y /= 100; + z /= 108.883; + + x = x > 0.008856 ? (x ** (1 / 3)) : (7.787 * x) + (16 / 116); + y = y > 0.008856 ? (y ** (1 / 3)) : (7.787 * y) + (16 / 116); + z = z > 0.008856 ? (z ** (1 / 3)) : (7.787 * z) + (16 / 116); + + const l = (116 * y) - 16; + const a = 500 * (x - y); + const b = 200 * (y - z); + + return [l, a, b]; +}; + +convert.lab.xyz = function (lab) { + const l = lab[0]; + const a = lab[1]; + const b = lab[2]; + let x; + let y; + let z; + + y = (l + 16) / 116; + x = a / 500 + y; + z = y - b / 200; + + const y2 = y ** 3; + const x2 = x ** 3; + const z2 = z ** 3; + y = y2 > 0.008856 ? y2 : (y - 16 / 116) / 7.787; + x = x2 > 0.008856 ? x2 : (x - 16 / 116) / 7.787; + z = z2 > 0.008856 ? z2 : (z - 16 / 116) / 7.787; + + x *= 95.047; + y *= 100; + z *= 108.883; + + return [x, y, z]; +}; + +convert.lab.lch = function (lab) { + const l = lab[0]; + const a = lab[1]; + const b = lab[2]; + let h; + + const hr = Math.atan2(b, a); + h = hr * 360 / 2 / Math.PI; + + if (h < 0) { + h += 360; + } + + const c = Math.sqrt(a * a + b * b); + + return [l, c, h]; +}; + +convert.lch.lab = function (lch) { + const l = lch[0]; + const c = lch[1]; + const h = lch[2]; + + const hr = h / 360 * 2 * Math.PI; + const a = c * Math.cos(hr); + const b = c * Math.sin(hr); + + return [l, a, b]; +}; + +convert.rgb.ansi16 = function (args, saturation = null) { + const [r, g, b] = args; + let value = saturation === null ? convert.rgb.hsv(args)[2] : saturation; // Hsv -> ansi16 optimization + + value = Math.round(value / 50); + + if (value === 0) { + return 30; + } + + let ansi = 30 + + ((Math.round(b / 255) << 2) + | (Math.round(g / 255) << 1) + | Math.round(r / 255)); + + if (value === 2) { + ansi += 60; + } + + return ansi; +}; + +convert.hsv.ansi16 = function (args) { + // Optimization here; we already know the value and don't need to get + // it converted for us. + return convert.rgb.ansi16(convert.hsv.rgb(args), args[2]); +}; + +convert.rgb.ansi256 = function (args) { + const r = args[0]; + const g = args[1]; + const b = args[2]; + + // We use the extended greyscale palette here, with the exception of + // black and white. normal palette only has 4 greyscale shades. + if (r === g && g === b) { + if (r < 8) { + return 16; + } + + if (r > 248) { + return 231; + } + + return Math.round(((r - 8) / 247) * 24) + 232; + } + + const ansi = 16 + + (36 * Math.round(r / 255 * 5)) + + (6 * Math.round(g / 255 * 5)) + + Math.round(b / 255 * 5); + + return ansi; +}; + +convert.ansi16.rgb = function (args) { + let color = args % 10; + + // Handle greyscale + if (color === 0 || color === 7) { + if (args > 50) { + color += 3.5; + } + + color = color / 10.5 * 255; + + return [color, color, color]; + } + + const mult = (~~(args > 50) + 1) * 0.5; + const r = ((color & 1) * mult) * 255; + const g = (((color >> 1) & 1) * mult) * 255; + const b = (((color >> 2) & 1) * mult) * 255; + + return [r, g, b]; +}; + +convert.ansi256.rgb = function (args) { + // Handle greyscale + if (args >= 232) { + const c = (args - 232) * 10 + 8; + return [c, c, c]; + } + + args -= 16; + + let rem; + const r = Math.floor(args / 36) / 5 * 255; + const g = Math.floor((rem = args % 36) / 6) / 5 * 255; + const b = (rem % 6) / 5 * 255; + + return [r, g, b]; +}; + +convert.rgb.hex = function (args) { + const integer = ((Math.round(args[0]) & 0xFF) << 16) + + ((Math.round(args[1]) & 0xFF) << 8) + + (Math.round(args[2]) & 0xFF); + + const string = integer.toString(16).toUpperCase(); + return '000000'.substring(string.length) + string; +}; + +convert.hex.rgb = function (args) { + const match = args.toString(16).match(/[a-f0-9]{6}|[a-f0-9]{3}/i); + if (!match) { + return [0, 0, 0]; + } + + let colorString = match[0]; + + if (match[0].length === 3) { + colorString = colorString.split('').map(char => { + return char + char; + }).join(''); + } + + const integer = parseInt(colorString, 16); + const r = (integer >> 16) & 0xFF; + const g = (integer >> 8) & 0xFF; + const b = integer & 0xFF; + + return [r, g, b]; +}; + +convert.rgb.hcg = function (rgb) { + const r = rgb[0] / 255; + const g = rgb[1] / 255; + const b = rgb[2] / 255; + const max = Math.max(Math.max(r, g), b); + const min = Math.min(Math.min(r, g), b); + const chroma = (max - min); + let grayscale; + let hue; + + if (chroma < 1) { + grayscale = min / (1 - chroma); + } else { + grayscale = 0; + } + + if (chroma <= 0) { + hue = 0; + } else + if (max === r) { + hue = ((g - b) / chroma) % 6; + } else + if (max === g) { + hue = 2 + (b - r) / chroma; + } else { + hue = 4 + (r - g) / chroma; + } + + hue /= 6; + hue %= 1; + + return [hue * 360, chroma * 100, grayscale * 100]; +}; + +convert.hsl.hcg = function (hsl) { + const s = hsl[1] / 100; + const l = hsl[2] / 100; + + const c = l < 0.5 ? (2.0 * s * l) : (2.0 * s * (1.0 - l)); + + let f = 0; + if (c < 1.0) { + f = (l - 0.5 * c) / (1.0 - c); + } + + return [hsl[0], c * 100, f * 100]; +}; + +convert.hsv.hcg = function (hsv) { + const s = hsv[1] / 100; + const v = hsv[2] / 100; + + const c = s * v; + let f = 0; + + if (c < 1.0) { + f = (v - c) / (1 - c); + } + + return [hsv[0], c * 100, f * 100]; +}; + +convert.hcg.rgb = function (hcg) { + const h = hcg[0] / 360; + const c = hcg[1] / 100; + const g = hcg[2] / 100; + + if (c === 0.0) { + return [g * 255, g * 255, g * 255]; + } + + const pure = [0, 0, 0]; + const hi = (h % 1) * 6; + const v = hi % 1; + const w = 1 - v; + let mg = 0; + + /* eslint-disable max-statements-per-line */ + switch (Math.floor(hi)) { + case 0: + pure[0] = 1; pure[1] = v; pure[2] = 0; break; + case 1: + pure[0] = w; pure[1] = 1; pure[2] = 0; break; + case 2: + pure[0] = 0; pure[1] = 1; pure[2] = v; break; + case 3: + pure[0] = 0; pure[1] = w; pure[2] = 1; break; + case 4: + pure[0] = v; pure[1] = 0; pure[2] = 1; break; + default: + pure[0] = 1; pure[1] = 0; pure[2] = w; + } + /* eslint-enable max-statements-per-line */ + + mg = (1.0 - c) * g; + + return [ + (c * pure[0] + mg) * 255, + (c * pure[1] + mg) * 255, + (c * pure[2] + mg) * 255 + ]; +}; + +convert.hcg.hsv = function (hcg) { + const c = hcg[1] / 100; + const g = hcg[2] / 100; + + const v = c + g * (1.0 - c); + let f = 0; + + if (v > 0.0) { + f = c / v; + } + + return [hcg[0], f * 100, v * 100]; +}; + +convert.hcg.hsl = function (hcg) { + const c = hcg[1] / 100; + const g = hcg[2] / 100; + + const l = g * (1.0 - c) + 0.5 * c; + let s = 0; + + if (l > 0.0 && l < 0.5) { + s = c / (2 * l); + } else + if (l >= 0.5 && l < 1.0) { + s = c / (2 * (1 - l)); + } + + return [hcg[0], s * 100, l * 100]; +}; + +convert.hcg.hwb = function (hcg) { + const c = hcg[1] / 100; + const g = hcg[2] / 100; + const v = c + g * (1.0 - c); + return [hcg[0], (v - c) * 100, (1 - v) * 100]; +}; + +convert.hwb.hcg = function (hwb) { + const w = hwb[1] / 100; + const b = hwb[2] / 100; + const v = 1 - b; + const c = v - w; + let g = 0; + + if (c < 1) { + g = (v - c) / (1 - c); + } + + return [hwb[0], c * 100, g * 100]; +}; + +convert.apple.rgb = function (apple) { + return [(apple[0] / 65535) * 255, (apple[1] / 65535) * 255, (apple[2] / 65535) * 255]; +}; + +convert.rgb.apple = function (rgb) { + return [(rgb[0] / 255) * 65535, (rgb[1] / 255) * 65535, (rgb[2] / 255) * 65535]; +}; + +convert.gray.rgb = function (args) { + return [args[0] / 100 * 255, args[0] / 100 * 255, args[0] / 100 * 255]; +}; + +convert.gray.hsl = function (args) { + return [0, 0, args[0]]; +}; + +convert.gray.hsv = convert.gray.hsl; + +convert.gray.hwb = function (gray) { + return [0, 100, gray[0]]; +}; + +convert.gray.cmyk = function (gray) { + return [0, 0, 0, gray[0]]; +}; + +convert.gray.lab = function (gray) { + return [gray[0], 0, 0]; +}; + +convert.gray.hex = function (gray) { + const val = Math.round(gray[0] / 100 * 255) & 0xFF; + const integer = (val << 16) + (val << 8) + val; + + const string = integer.toString(16).toUpperCase(); + return '000000'.substring(string.length) + string; +}; + +convert.rgb.gray = function (rgb) { + const val = (rgb[0] + rgb[1] + rgb[2]) / 3; + return [val / 255 * 100]; +}; diff --git a/node_modules/color-convert/index.js b/node_modules/color-convert/index.js new file mode 100644 index 0000000..b648e57 --- /dev/null +++ b/node_modules/color-convert/index.js @@ -0,0 +1,81 @@ +const conversions = require('./conversions'); +const route = require('./route'); + +const convert = {}; + +const models = Object.keys(conversions); + +function wrapRaw(fn) { + const wrappedFn = function (...args) { + const arg0 = args[0]; + if (arg0 === undefined || arg0 === null) { + return arg0; + } + + if (arg0.length > 1) { + args = arg0; + } + + return fn(args); + }; + + // Preserve .conversion property if there is one + if ('conversion' in fn) { + wrappedFn.conversion = fn.conversion; + } + + return wrappedFn; +} + +function wrapRounded(fn) { + const wrappedFn = function (...args) { + const arg0 = args[0]; + + if (arg0 === undefined || arg0 === null) { + return arg0; + } + + if (arg0.length > 1) { + args = arg0; + } + + const result = fn(args); + + // We're assuming the result is an array here. + // see notice in conversions.js; don't use box types + // in conversion functions. + if (typeof result === 'object') { + for (let len = result.length, i = 0; i < len; i++) { + result[i] = Math.round(result[i]); + } + } + + return result; + }; + + // Preserve .conversion property if there is one + if ('conversion' in fn) { + wrappedFn.conversion = fn.conversion; + } + + return wrappedFn; +} + +models.forEach(fromModel => { + convert[fromModel] = {}; + + Object.defineProperty(convert[fromModel], 'channels', {value: conversions[fromModel].channels}); + Object.defineProperty(convert[fromModel], 'labels', {value: conversions[fromModel].labels}); + + const routes = route(fromModel); + const routeModels = Object.keys(routes); + + routeModels.forEach(toModel => { + const fn = routes[toModel]; + + convert[fromModel][toModel] = wrapRounded(fn); + convert[fromModel][toModel].raw = wrapRaw(fn); + }); +}); + +module.exports = convert; diff --git a/node_modules/color-convert/package.json b/node_modules/color-convert/package.json new file mode 100644 index 0000000..6e48000 --- /dev/null +++ b/node_modules/color-convert/package.json @@ -0,0 +1,48 @@ +{ + "name": "color-convert", + "description": "Plain color conversion functions", + "version": "2.0.1", + "author": "Heather Arthur <fayearthur@gmail.com>", + "license": "MIT", + "repository": "Qix-/color-convert", + "scripts": { + "pretest": "xo", + "test": "node test/basic.js" + }, + "engines": { + "node": ">=7.0.0" + }, + "keywords": [ + "color", + "colour", + "convert", + "converter", + "conversion", + "rgb", + "hsl", + "hsv", + "hwb", + "cmyk", + "ansi", + "ansi16" + ], + "files": [ + "index.js", + "conversions.js", + "route.js" + ], + "xo": { + "rules": { + "default-case": 0, + "no-inline-comments": 0, + "operator-linebreak": 0 + } + }, + "devDependencies": { + "chalk": "^2.4.2", + "xo": "^0.24.0" + }, + "dependencies": { + "color-name": "~1.1.4" + } +} diff --git a/node_modules/color-convert/route.js b/node_modules/color-convert/route.js new file mode 100644 index 0000000..1a08521 --- /dev/null +++ b/node_modules/color-convert/route.js @@ -0,0 +1,97 @@ +const conversions = require('./conversions'); + +/* + This function routes a model to all other models. + + all functions that are routed have a property `.conversion` attached + to the returned synthetic function. This property is an array + of strings, each with the steps in between the 'from' and 'to' + color models (inclusive). + + conversions that are not possible simply are not included. +*/ + +function buildGraph() { + const graph = {}; + // https://jsperf.com/object-keys-vs-for-in-with-closure/3 + const models = Object.keys(conversions); + + for (let len = models.length, i = 0; i < len; i++) { + graph[models[i]] = { + // http://jsperf.com/1-vs-infinity + // micro-opt, but this is simple. + distance: -1, + parent: null + }; + } + + return graph; +} + +// https://en.wikipedia.org/wiki/Breadth-first_search +function deriveBFS(fromModel) { + const graph = buildGraph(); + const queue = [fromModel]; // Unshift -> queue -> pop + + graph[fromModel].distance = 0; + + while (queue.length) { + const current = queue.pop(); + const adjacents = Object.keys(conversions[current]); + + for (let len = adjacents.length, i = 0; i < len; i++) { + const adjacent = adjacents[i]; + const node = graph[adjacent]; + + if (node.distance === -1) { + node.distance = graph[current].distance + 1; + node.parent = current; + queue.unshift(adjacent); + } + } + } + + return graph; +} + +function link(from, to) { + return function (args) { + return to(from(args)); + }; +} + +function wrapConversion(toModel, graph) { + const path = [graph[toModel].parent, toModel]; + let fn = conversions[graph[toModel].parent][toModel]; + + let cur = graph[toModel].parent; + while (graph[cur].parent) { + path.unshift(graph[cur].parent); + fn = link(conversions[graph[cur].parent][cur], fn); + cur = graph[cur].parent; + } + + fn.conversion = path; + return fn; +} + +module.exports = function (fromModel) { + const graph = deriveBFS(fromModel); + const conversion = {}; + + const models = Object.keys(graph); + for (let len = models.length, i = 0; i < len; i++) { + const toModel = models[i]; + const node = graph[toModel]; + + if (node.parent === null) { + // No possible conversion, or this node is the source model. + continue; + } + + conversion[toModel] = wrapConversion(toModel, graph); + } + + return conversion; +}; + |