zz85

// Simple Undo / Redo System

/*
 * @author joshua koo / http://joshuakoo.com
 *
 * There are usually 2 different ways to handle undo / redo
 * 1. you snapshot and store the states, so you can load them anytime
 * 2. you store the deltas, actions, events or commands between save points.
 *
 * Method 1 is simplistic. But it works. It's a lot like git.

zz85

// TODO Use the DOM Mutation API!
(function switchText(node) {
	var nodes = node.childNodes;
	for (var n = 0; n < nodes.length; n++) {
		if (nodes[n].nodeName.match(/(script|style)/i)); else
		if (nodes[n].nodeType == 3) {
			if (!/^\s+$/.test(nodes[n].value)) {
				nodes[n].data = nodes[n].data.replace(/[a-zA-Z]+/g, function(w) {
					return (w.match(/^(the|on|are|if|is|and|or|you|your|a|an)$/i))
						? w

zz85

var c = document.createElement('canvas');
c.width = innerWidth;
c.height = innerHeight;

var ctx = c.getContext('2d');

document.body.appendChild(c);

var last = performance.now();
var delay = 0;

zz85

var c = document.createElement('canvas');
c.width = innerWidth;
c.height = innerHeight;

var ctx = c.getContext('2d');

document.body.appendChild(c);

var last = performance.now();
var delay = 0;

zz85

function Histogram() {
	this.reset();
}

Histogram.prototype.reset = function() {
	this.counts = [];
	this.types = {};
};

zz85

function format_numbers(n) {
	return (n / 1024 / 1024).toFixed(3) + 'MB';
}

function mem() {
	if (performance && performance.memory) {
		console.log('used heap', format_numbers(performance.memory.usedJSHeapSize))
		console.log('total heap', format_numbers(performance.memory.totalJSHeapSize))
		console.log('heap limit', format_numbers(performance.memory.jsHeapSizeLimit))
	}

zz85

if (!document.styleSheets.length) document.head.appendChild(document.createElement('style'));
var sheet = document.styleSheets[document.styleSheets.length - 1];
var rules = {};
function cssRule(selector, styles) {
	var index;
	if (selector in rules) {
		index = rules[selector];
		sheet.deleteRule(index);
	} else {
		index = rules[selector] = sheet.cssRules.length;

zz85

{
    "requireCurlyBraces": ["while", "do", "try", "catch"],
    "requireSpaceAfterKeywords": ["if", "else", "for", "while", "do", "switch", "return", "try", "catch"],
        "requireSpacesInFunctionExpression": {
        "beforeOpeningCurlyBrace": true
    },
    "requirePaddingNewlinesInBlocks": true,
    "requireSpacesInsideObjectBrackets": "all",
    "requireSpacesInsideArrayBrackets": "allButNested",
    "requireSpaceBeforeBlockStatements": true,

zz85

/*
 * @author zz85 / https://github.com/zz85
 *
 * Related Readings
 *
 * http://rastergrid.com/blog/2010/09/efficient-gaussian-blur-with-linear-sampling/
 * http://www.sunsetlakesoftware.com/2013/10/21/optimizing-gaussian-blurs-mobile-gpu
 * http://xissburg.com/faster-gaussian-blur-in-glsl/
 * https://github.com/manuelbua/blur-ninja
 *

zz85

<script id="toon" type="frag/shader">
	// Based on http://coding-experiments.blogspot.sg/2011/01/toon-pixel-shader.html
	
	uniform float width;
	uniform float height;
	uniform sampler2D tDiffuse;
	varying vec2 vUv;

	#define HueLevCount 6
	#define SatLevCount 7