Write pixels to the terminal in vertical pairs
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img-test.js
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test2.bmp
testrb.bmp

readme.md

term-px

Write pixels to the terminal using ANSI colors and half-characters. Try it here.

Verified to work in Windows CMD, Git Bash, xterm, and more.

Demo

You can see it yourself by running img-test.js.

WHAT?

I'm kinda cheating. Using special characters (namely ▀ █ and ▄) we're able to write an approximation of actual pixels to the terminal.

Examples:

var termPx = require('term-px');

/*

default usage

*/

var pixels = termPx([0,0,0],[255,255,255])
  //  => '\u001b[97;40m▄\u001b[0m'
  //  => <black on top and white on bottom>

// provide an options object with "format" set to "rgb" for use in full color terminals
var rgbPixels = termPx([0x9A,0x00,0xC4],[0xBB,0x00,0xC4],{format:"rgb"});
  //  => "\u001b[38;2;154;0;196;48;2;187;0;196m▀\u001b[0m"
  //  <two slightly different purples>

// set "reset" to false to not reset the color at the end.
var unClosedRgbPixels = termPx([0x9A,0x00,0xC4],[0xBB,0x00,0xC4],{format:"rgb",reset:false});
  //  => "\u001b[38;2;154;0;196;48;2;187;0;196m▀"

/*

Preparing images:

*/

// Image data must be in RGBA 0-255 format, and have data and width keys.
var bmp = require("bmp-js");
var bmpBuffer = fs.readFileSync('aa.bmp');
var bmpData = bmp.decode(bmpBuffer); // {data:[255,0,255,255,...],width:10,height:20}

var logo = termPx.convertImage(bmpData,{format:"rgb"});
  // => (a massive String)

process.stdout.write(logo)
  // logo is shown