glitchin/lib/modules/data-to-columns.js

Glitch Art package

'use strict';

var _ = require('lodash');

module.exports = function( image ){
	var width = image.glitch.width,
		columns = [];

	for( var i = 0; i < image.glitch.data.length; i++ ){
		var pixel = image.glitch.data[i],
			colIndex = i % width;

		if( _.isUndefined(columns[colIndex]) ){
			columns[colIndex] = [];
		}

		columns[colIndex].push(pixel);
	}

	return columns;
};