Created
June 19, 2015 10:57
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Simple glitch application that glitches images by manipulating the string data.
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#!/usr/bin/env node | |
var gd = require('node-gd'); | |
var fs = require('fs'); | |
var c; | |
var img = fs.readFileSync('b.jpg', { encoding: 'binary' }); | |
var imageBuffer = new Buffer(img, 'binary'); | |
var newBuffer; | |
var ch = ['aasd','gwer']; | |
var replace; | |
function rand() { | |
return Math.floor(Math.random() * img.length); | |
} | |
for (var j = 0; j < 10; j++) { | |
newBuffer = new Buffer(img.length); | |
imageBuffer.copy(newBuffer); | |
for (var i = 0; i < 100; i++) { | |
c = rand(); | |
replace = ch[Math.floor(Math.random() * ch.length)]; | |
newBuffer.write(replace, c, 1); | |
} | |
try { | |
var newImg = gd.createFromJpegPtr(newBuffer.toString('binary')); | |
newImg.saveFile('test'+j+'.jpg'); | |
// fs.writeFileSync('test.txt', b); | |
} catch(e) { | |
console.log('erroneous image'); | |
} | |
} |
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Instructions:
0. Type in Terminal:
brew install gd
. If this throws errors, type:ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
and then repeat step 0.cd
into that directory, likecd Projects/glitch
npm init
and press enter many times.npm install --save node-gd
and press enter.b.jpg
or something, as long as you also change the name of it in line 6.node glitch.js
and hopefully you'll get glitched images!