konijn

// Excerpt from: https://github.com/Animatron/player/blob/master/anm.collisions.js

function edgeTest(p1, p2, p3, r2) {
    var rot = [ -(p2[1] - p1[1]),
                  p2[0] - p1[0] ];

    var ref = (rot[0] * (p3[0] - p1[0]) +
               rot[1] * (p3[1] - p1[1])) >= 0;

    for (var i = 0, il = r2.length; i < il; i+=2) {

konijn

function isPrime( n )
{
  if( n < 2 )
    return false
  if( n < 4 )
    return true;
  if( n % 2 == 0 )
    return false;
  if( n % 3 == 0 )
    return false; 

konijn

/* Dump all 'user space' globals 
Many thanks to glutamat: http://stackoverflow.com/questions/14585537 */
void( (function()
{
  var w = document.body.appendChild( document.createElement("iframe") ).contentWindow,
  known = 
  [ 
    "screenLeft" , "screenTop" , "scrollX" , "scrollY" , "pageYOffset" , "pageXOffset" , /* Scrolling related built-ins */
    "innerWidth" , "innerHeight" , "outerWidth" , "outerHeight" , /* Size related built-ins */
    "defaultstatus" , "defaultStatus", /* Status bar text related built-ins */