文件列表:

.npmignore (25, 2016-01-26)
.travis.yml (176, 2016-01-26)
LICENSE (1083, 2016-01-26)
index.js (10349, 2016-01-26)
package.json (1009, 2016-01-26)
test/ (0, 2016-01-26)
test/test.js (10008, 2016-01-26)

[![Gitter][gitter-image]][gitter-url] [![NPM version][npm-image]][npm-url] [![Build status][travis-image]] [travis-url] [![Test coverage][coveralls-image]] [coveralls-url] [![Dependency Status][david-image]][david-url] [![License][license-image]][license-url] [![Downloads][downloads-image]][downloads-url] # nano-color HSV/RGB color conversion utility library. HSV filter, coloring filter, gradients generating. ## Functions ### Common parameter names * R,G,B,A -- integer channel value (0..255); * h -- hue value (0..359); * s,v,a -- saturation, volume, alpha value (0..1); * g -- gamma value; * RGB -- [ R, G, B ]; * RGBA -- [ R, G, B, A ]; * IRGBA -- 0xRRGGBBAA; * IRGB -- 0xRRGGBB; * data -- array of bytes; * addr -- offset in an array of bytes. ### setGamma(g) set Gamma correction value ### rgb2hsv(R,G,B) Converts RGB to HSV. Returns array [ h, s, v ]. ### hsv2rgb(h,s,v) Returns [ R, G, B ]. ### hsva2rgba(h,s,v,a) Returns [ R, G, B, A ]. ### rgba2hsva(R,G,B,A) Returns [ h, s, v, a ]. ### rgb2hex(RGB) Return CSS hex color string -- '#RRGGBB'. ### rgba2hex(RGBA) Return SVN hex color string -- '#RRGGBBAA'. ### hex2rgb(h) Returns [ R, G, B ]. Eats '#RGB', '#RGBA', '#RRGGBB' and '#RRGGBBAA' formats. ### hex2rgba(hex) Returns [ R, G, B, A ]. Eats '#RGB', '#RGBA', '#RRGGBB' and '#RRGGBBAA' formats. ### irgb2array(IRGB) Returns [ R, G, B ]. ### irgba2array(IRGBA) Returns [ R, G, B, A ]. ### hsva2irgba(h,s,v,a) Returns 0xRRGGBBAA. ### put_rgb(data, addr, RGBA) Put or mix in RGBA to the RGB bitmap array (data). ### put_rgba(data, addr, RGBA) Put or mix in RGBA to the RGBA bitmap array (data). ### hsv_filter(data, addr, h, s, v) Applyes HSV filter to the bitmap pixel. ### colorify_filter(data, addr, h, s, v) Applyes Colorify filter to the bitmap pixel. There are special case for v < 0. A result volume will be calculated by the formula ```(.21*r + .72*g + .07*b) * -val```. ### gradient(first_pos, last_pos, stops, fn) * {stops} -- Object with color stops like: ``` { 0: '#000', 4000: '#1234', 6000: 0x33445566, 10000: [ 255, 255, 255, 255 ] } ``` where, keys of object should be numeric value in bounds between 0 and 10000, that means from 0 to 1.0. * {fn(position, RGBA)} -- callback function Example: ``` > var c = require('nano-color'); c.gradient(0, 10, { 0: '#000', 4000: '#1234', 6500: 0x33445566, 10000: [ 255, 255, 7, 255 ] }, function (pos, RGBA) { console.log('%s: [ %s ]', pos, RGBA.join(', ')); }); ``` will produce console output: ``` 0: [ 0, 0, 0, 255 ] 1: [ 4, 9, 13, 208 ] 2: [ 9, 17, 26, 162 ] 3: [ 13, 26, 38, 115 ] 4: [ 17, 34, 51, 68 ] 5: [ 31, 48, 65, 82 ] 6: [ 48, 65, 82, 99 ] 7: [ 80, 95, 74, 124 ] 8: [ 138, 148, 52, 168 ] 9: [ 197, 202, 29, 211 ] 10: [ 255, 255, 7, 255 ] ``` [gitter-image]: https://badges.gitter.im/Holixus/nano-color.svg [gitter-url]: https://gitter.im/Holixus/nano-color [npm-image]: https://img.shields.io/npm/v/nano-color.svg [npm-url]: https://npmjs.org/package/nano-color [github-tag]: http://img.shields.io/github/tag/Holixus/nano-color.svg [github-url]: https://github.com/Holixus/nano-color/tags [travis-image]: https://travis-ci.org/Holixus/nano-color.svg?branch=master [travis-url]: https://travis-ci.org/Holixus/nano-color [coveralls-image]: https://img.shields.io/coveralls/Holixus/nano-color.svg [coveralls-url]: https://coveralls.io/r/Holixus/nano-color [david-image]: http://img.shields.io/david/Holixus/nano-color.svg [david-url]: https://david-dm.org/Holixus/nano-color [license-image]: http://img.shields.io/npm/l/nano-color.svg [license-url]: LICENSE [downloads-image]: http://img.shields.io/npm/dm/nano-color.svg [downloads-url]: https://npmjs.org/package/nano-color

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