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54
node_modules/color-convert/CHANGELOG.md
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node_modules/color-convert/CHANGELOG.md
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# 1.0.0 - 2016-01-07
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- Removed: unused speed test
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- Added: Automatic routing between previously unsupported conversions
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([#27](https://github.com/Qix-/color-convert/pull/27))
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- Removed: `xxx2xxx()` and `xxx2xxxRaw()` functions
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([#27](https://github.com/Qix-/color-convert/pull/27))
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- Removed: `convert()` class
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([#27](https://github.com/Qix-/color-convert/pull/27))
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- Changed: all functions to lookup dictionary
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([#27](https://github.com/Qix-/color-convert/pull/27))
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- Changed: `ansi` to `ansi256`
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([#27](https://github.com/Qix-/color-convert/pull/27))
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- Fixed: argument grouping for functions requiring only one argument
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([#27](https://github.com/Qix-/color-convert/pull/27))
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# 0.6.0 - 2015-07-23
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- Added: methods to handle
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[ANSI](https://en.wikipedia.org/wiki/ANSI_escape_code#Colors) 16/256 colors:
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- rgb2ansi16
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- rgb2ansi
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- hsl2ansi16
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- hsl2ansi
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- hsv2ansi16
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- hsv2ansi
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- hwb2ansi16
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- hwb2ansi
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- cmyk2ansi16
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- cmyk2ansi
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- keyword2ansi16
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- keyword2ansi
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- ansi162rgb
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- ansi162hsl
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- ansi162hsv
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- ansi162hwb
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- ansi162cmyk
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- ansi162keyword
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- ansi2rgb
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- ansi2hsl
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- ansi2hsv
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- ansi2hwb
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- ansi2cmyk
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- ansi2keyword
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([#18](https://github.com/harthur/color-convert/pull/18))
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# 0.5.3 - 2015-06-02
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- Fixed: hsl2hsv does not return `NaN` anymore when using `[0,0,0]`
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([#15](https://github.com/harthur/color-convert/issues/15))
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|
||||
---
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||||
|
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Check out commit logs for older releases
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21
node_modules/color-convert/LICENSE
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node_modules/color-convert/LICENSE
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Copyright (c) 2011-2016 Heather Arthur <fayearthur@gmail.com>
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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:
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||||
|
||||
The above copyright notice and this permission notice shall be
|
||||
included in all copies or substantial portions of the Software.
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||||
|
||||
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
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||||
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
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WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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|
68
node_modules/color-convert/README.md
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node_modules/color-convert/README.md
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# color-convert
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[](https://travis-ci.org/Qix-/color-convert)
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Color-convert is a color conversion library for JavaScript and node.
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It converts all ways between `rgb`, `hsl`, `hsv`, `hwb`, `cmyk`, `ansi`, `ansi16`, `hex` strings, and CSS `keyword`s (will round to closest):
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```js
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var convert = require('color-convert');
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convert.rgb.hsl(140, 200, 100); // [96, 48, 59]
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convert.keyword.rgb('blue'); // [0, 0, 255]
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var rgbChannels = convert.rgb.channels; // 3
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var cmykChannels = convert.cmyk.channels; // 4
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var ansiChannels = convert.ansi16.channels; // 1
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```
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# Install
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```console
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$ npm install color-convert
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```
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# API
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Simply get the property of the _from_ and _to_ conversion that you're looking for.
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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.
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All 'from' functions have a hidden property called `.channels` that indicates the number of channels the function expects (not including alpha).
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```js
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var convert = require('color-convert');
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// Hex to LAB
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convert.hex.lab('DEADBF'); // [ 76, 21, -2 ]
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convert.hex.lab.raw('DEADBF'); // [ 75.56213190997677, 20.653827952644754, -2.290532499330533 ]
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// RGB to CMYK
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convert.rgb.cmyk(167, 255, 4); // [ 35, 0, 98, 0 ]
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convert.rgb.cmyk.raw(167, 255, 4); // [ 34.509803921568626, 0, 98.43137254901961, 0 ]
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```
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### Arrays
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All functions that accept multiple arguments also support passing an array.
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Note that this does **not** apply to functions that convert from a color that only requires one value (e.g. `keyword`, `ansi256`, `hex`, etc.)
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```js
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var convert = require('color-convert');
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convert.rgb.hex(123, 45, 67); // '7B2D43'
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convert.rgb.hex([123, 45, 67]); // '7B2D43'
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```
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## Routing
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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).
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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).
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# Contribute
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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.
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# License
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||||
Copyright © 2011-2016, Heather Arthur and Josh Junon. Licensed under the [MIT License](LICENSE).
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839
node_modules/color-convert/conversions.js
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node_modules/color-convert/conversions.js
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/* MIT license */
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/* eslint-disable no-mixed-operators */
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const cssKeywords = require('color-name');
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// NOTE: conversions should only return primitive values (i.e. arrays, or
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// values that give correct `typeof` results).
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// do not use box values types (i.e. Number(), String(), etc.)
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const reverseKeywords = {};
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for (const key of Object.keys(cssKeywords)) {
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reverseKeywords[cssKeywords[key]] = key;
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}
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const convert = {
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rgb: {channels: 3, labels: 'rgb'},
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hsl: {channels: 3, labels: 'hsl'},
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hsv: {channels: 3, labels: 'hsv'},
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hwb: {channels: 3, labels: 'hwb'},
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cmyk: {channels: 4, labels: 'cmyk'},
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xyz: {channels: 3, labels: 'xyz'},
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lab: {channels: 3, labels: 'lab'},
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lch: {channels: 3, labels: 'lch'},
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hex: {channels: 1, labels: ['hex']},
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keyword: {channels: 1, labels: ['keyword']},
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ansi16: {channels: 1, labels: ['ansi16']},
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ansi256: {channels: 1, labels: ['ansi256']},
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hcg: {channels: 3, labels: ['h', 'c', 'g']},
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apple: {channels: 3, labels: ['r16', 'g16', 'b16']},
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gray: {channels: 1, labels: ['gray']}
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};
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module.exports = convert;
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// Hide .channels and .labels properties
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for (const model of Object.keys(convert)) {
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if (!('channels' in convert[model])) {
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throw new Error('missing channels property: ' + model);
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}
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if (!('labels' in convert[model])) {
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throw new Error('missing channel labels property: ' + model);
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}
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if (convert[model].labels.length !== convert[model].channels) {
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throw new Error('channel and label counts mismatch: ' + model);
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}
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const {channels, labels} = convert[model];
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delete convert[model].channels;
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delete convert[model].labels;
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Object.defineProperty(convert[model], 'channels', {value: channels});
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Object.defineProperty(convert[model], 'labels', {value: labels});
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}
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convert.rgb.hsl = function (rgb) {
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const r = rgb[0] / 255;
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const g = rgb[1] / 255;
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const b = rgb[2] / 255;
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const min = Math.min(r, g, b);
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const max = Math.max(r, g, b);
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const delta = max - min;
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let h;
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let s;
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if (max === min) {
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h = 0;
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} else if (r === max) {
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h = (g - b) / delta;
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} else if (g === max) {
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h = 2 + (b - r) / delta;
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} else if (b === max) {
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h = 4 + (r - g) / delta;
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}
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h = Math.min(h * 60, 360);
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if (h < 0) {
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h += 360;
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}
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const l = (min + max) / 2;
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if (max === min) {
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s = 0;
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} else if (l <= 0.5) {
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s = delta / (max + min);
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} else {
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s = delta / (2 - max - min);
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}
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return [h, s * 100, l * 100];
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};
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convert.rgb.hsv = function (rgb) {
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let rdif;
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let gdif;
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let bdif;
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let h;
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let s;
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const r = rgb[0] / 255;
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const g = rgb[1] / 255;
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const b = rgb[2] / 255;
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const v = Math.max(r, g, b);
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const diff = v - Math.min(r, g, b);
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const diffc = function (c) {
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return (v - c) / 6 / diff + 1 / 2;
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};
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if (diff === 0) {
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h = 0;
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s = 0;
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} else {
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s = diff / v;
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rdif = diffc(r);
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gdif = diffc(g);
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bdif = diffc(b);
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if (r === v) {
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h = bdif - gdif;
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} else if (g === v) {
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h = (1 / 3) + rdif - bdif;
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} else if (b === v) {
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h = (2 / 3) + gdif - rdif;
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||||
}
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|
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if (h < 0) {
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h += 1;
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} else if (h > 1) {
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h -= 1;
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}
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}
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|
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return [
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h * 360,
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s * 100,
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v * 100
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];
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};
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convert.rgb.hwb = function (rgb) {
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const r = rgb[0];
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const g = rgb[1];
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let b = rgb[2];
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const h = convert.rgb.hsl(rgb)[0];
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const w = 1 / 255 * Math.min(r, Math.min(g, b));
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b = 1 - 1 / 255 * Math.max(r, Math.max(g, b));
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return [h, w * 100, b * 100];
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};
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convert.rgb.cmyk = function (rgb) {
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const r = rgb[0] / 255;
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const g = rgb[1] / 255;
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const b = rgb[2] / 255;
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const k = Math.min(1 - r, 1 - g, 1 - b);
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const c = (1 - r - k) / (1 - k) || 0;
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const m = (1 - g - k) / (1 - k) || 0;
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const y = (1 - b - k) / (1 - k) || 0;
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||||
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return [c * 100, m * 100, y * 100, k * 100];
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};
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function comparativeDistance(x, y) {
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||||
/*
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See https://en.m.wikipedia.org/wiki/Euclidean_distance#Squared_Euclidean_distance
|
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*/
|
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return (
|
||||
((x[0] - y[0]) ** 2) +
|
||||
((x[1] - y[1]) ** 2) +
|
||||
((x[2] - y[2]) ** 2)
|
||||
);
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||||
}
|
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convert.rgb.keyword = function (rgb) {
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const reversed = reverseKeywords[rgb];
|
||||
if (reversed) {
|
||||
return reversed;
|
||||
}
|
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|
||||
let currentClosestDistance = Infinity;
|
||||
let currentClosestKeyword;
|
||||
|
||||
for (const keyword of Object.keys(cssKeywords)) {
|
||||
const value = cssKeywords[keyword];
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||||
|
||||
// Compute comparative distance
|
||||
const distance = comparativeDistance(rgb, value);
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||||
|
||||
// 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];
|
||||
};
|
81
node_modules/color-convert/index.js
generated
vendored
Normal file
81
node_modules/color-convert/index.js
generated
vendored
Normal file
|
@ -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;
|
87
node_modules/color-convert/package.json
generated
vendored
Normal file
87
node_modules/color-convert/package.json
generated
vendored
Normal file
|
@ -0,0 +1,87 @@
|
|||
{
|
||||
"_args": [
|
||||
[
|
||||
"color-convert@2.0.1",
|
||||
"/d"
|
||||
]
|
||||
],
|
||||
"_from": "color-convert@2.0.1",
|
||||
"_id": "color-convert@2.0.1",
|
||||
"_inBundle": false,
|
||||
"_integrity": "sha512-RRECPsj7iu/xb5oKYcsFHSppFNnsj/52OVTRKb4zP5onXwVF3zVmmToNcOfGC+CRDpfK/U584fMg38ZHCaElKQ==",
|
||||
"_location": "/color-convert",
|
||||
"_phantomChildren": {},
|
||||
"_requested": {
|
||||
"type": "version",
|
||||
"registry": true,
|
||||
"raw": "color-convert@2.0.1",
|
||||
"name": "color-convert",
|
||||
"escapedName": "color-convert",
|
||||
"rawSpec": "2.0.1",
|
||||
"saveSpec": null,
|
||||
"fetchSpec": "2.0.1"
|
||||
},
|
||||
"_requiredBy": [
|
||||
"/ansi-styles",
|
||||
"/color"
|
||||
],
|
||||
"_resolved": "https://registry.npmjs.org/color-convert/-/color-convert-2.0.1.tgz",
|
||||
"_spec": "2.0.1",
|
||||
"_where": "/d",
|
||||
"author": {
|
||||
"name": "Heather Arthur",
|
||||
"email": "fayearthur@gmail.com"
|
||||
},
|
||||
"bugs": {
|
||||
"url": "https://github.com/Qix-/color-convert/issues"
|
||||
},
|
||||
"dependencies": {
|
||||
"color-name": "~1.1.4"
|
||||
},
|
||||
"description": "Plain color conversion functions",
|
||||
"devDependencies": {
|
||||
"chalk": "^2.4.2",
|
||||
"xo": "^0.24.0"
|
||||
},
|
||||
"engines": {
|
||||
"node": ">=7.0.0"
|
||||
},
|
||||
"files": [
|
||||
"index.js",
|
||||
"conversions.js",
|
||||
"route.js"
|
||||
],
|
||||
"homepage": "https://github.com/Qix-/color-convert#readme",
|
||||
"keywords": [
|
||||
"color",
|
||||
"colour",
|
||||
"convert",
|
||||
"converter",
|
||||
"conversion",
|
||||
"rgb",
|
||||
"hsl",
|
||||
"hsv",
|
||||
"hwb",
|
||||
"cmyk",
|
||||
"ansi",
|
||||
"ansi16"
|
||||
],
|
||||
"license": "MIT",
|
||||
"name": "color-convert",
|
||||
"repository": {
|
||||
"type": "git",
|
||||
"url": "git+https://github.com/Qix-/color-convert.git"
|
||||
},
|
||||
"scripts": {
|
||||
"pretest": "xo",
|
||||
"test": "node test/basic.js"
|
||||
},
|
||||
"version": "2.0.1",
|
||||
"xo": {
|
||||
"rules": {
|
||||
"default-case": 0,
|
||||
"no-inline-comments": 0,
|
||||
"operator-linebreak": 0
|
||||
}
|
||||
}
|
||||
}
|
97
node_modules/color-convert/route.js
generated
vendored
Normal file
97
node_modules/color-convert/route.js
generated
vendored
Normal file
|
@ -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;
|
||||
};
|
||||
|
Loading…
Add table
Add a link
Reference in a new issue