greggman

  <script>
  (function() {
    var insert = function(e) {
        var elem = document.createElement("pre");
        elem.appendChild(document.createTextNode(Array.prototype.join.call(arguments, " ")));
        document.body.insertBefore(elem, document.body.firstChild);
      };
      window.addEventListener('error', insert);
      window.console.log = function(origFn) {
          return function() {

greggman

var gl = document.createElement("canvas").getContext("webgl");
var tex = gl.createTexture();
gl.bindTexture(gl.TEXTURE_2D, tex);
var fb = gl.createFramebuffer();
gl.bindFramebuffer(gl.FRAMEBUFFER, fb);
gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, tex, 0);
[
  "ALPHA",
  "LUMINANCE",
  "LUMINANCE_ALPHA",

greggman

var test = {
    useClosure: (function() {
      var callCount_ = 0;

      return function() {
        console.log("been called: ", ++callCount_);
      };
    }()),
};

greggman

using UnityEngine;
using System;

// example:
// HFTDialog.MessageBox("error", "Sorry but you're S.O.L", () => { Application.Quit() });

public class HFTDialog : MonoBehaviour {

    Rect m_windowRect;
    Action m_action;

greggman

Assume you have a custom file you want to create an importer for. It could be an .xls file or whatever. In this case we're going to use a JSON file because it's easy but we're going to pick a custom extension to make it easy to tell which files are ours?

Let's assume the format of the JSON file is

{
  "someValue": 123,
  "someOtherValue": 456.297,
  "someBoolValue": true,
  "someStringValue": "this is a string",

}

greggman

function PseudoRandom() {
  var randomSeed_ = 0;
  var RANDOM_RANGE_ = Math.pow(2, 32);

  /**
   * Returns a deterministic pseudorandom number between 0 and 1
   * @return {number} a random number between 0 and 1
   */
  this.random = function() {

greggman

// example of making something like npm's debug module inside electron

const makeLogFunc = require('./logger');

const s_debugRE = function(debug) {
  debug = debug || '-----';
  const patterns = debug.split(',').map(pattern => {
    return pattern.replace(/\*/, '.*?') || '----';
  });
  const pattern = '^(' + patterns.join('|') + ')$';

greggman

grep -l -R --include="*.js" --include="*.html" webglLessonsHelper.setupSlider . | xargs -n 1 sed -E -i '' $'s/<script src="([^"]+)\\/webgl-utils.js"/<script src="\\1\\/webgl-lessons-ui.js"><\\/script>\\\n<script src="\\1\\/webgl-utils.js"/'

greggman

// from http://stackoverflow.com/questions/6162651/half-precision-floating-point-in-java/6162687#6162687
var toHalf = (function() {

  var floatView = new Float32Array(1);
  var int32View = new Int32Array(floatView.buffer);

  return function toHalf(fval) {
    floatView[0] = fval;
    var fbits = int32View[0];
    var sign  = (fbits >> 16) & 0x8000;         // sign only

greggman

function getShaderSource(needsBGRA) {
   const twizzle = needsBGRA ? '.bgra' : '';

   return `
...
    imageColor = texture2D(u_image, v_image_coordinates)${twizzle};
...
`;
}