node/node_modules/derby-examples/sink/lib/app/bindings-bench.js

// Generated by CoffeeScript 1.3.1
var N, app, get, ready, render, _ref;

_ref = app = require('./index'), get = _ref.get, ready = _ref.ready;

render = require('./shared').render;

N = 100;

get('/bindings-bench', function(page, model) {
  var boxes, i, _i;
  boxes = [];
  for (i = _i = 0; 0 <= N ? _i < N : _i > N; i = 0 <= N ? ++_i : --_i) {
    boxes.push({
      count: 0,
      top: 0,
      left: 0,
      color: 0,
      content: 0,
      i: i
    });
  }
  model.set('_boxes', boxes);
  return render(page, 'bindingsBench', {
    modes: ['setProperty', 'setBox', 'setAll']
  });
});

ready(function(model) {
  var boxValue, boxes, fn, frames, modes, run, setAll, setBox, setProperty, start, tickBox, tickProperty, timeout;
  boxes = model.at('_boxes');
  tickProperty = function(box) {
    var count;
    count = box.incr('count');
    box.set('top', Math.sin(count / 10) * 10);
    box.set('left', Math.cos(count / 10) * 10);
    box.set('color', count % 255);
    return box.set('content', count % 100);
  };
  setProperty = function() {
    var i, _i;
    for (i = _i = 0; 0 <= N ? _i < N : _i > N; i = 0 <= N ? ++_i : --_i) {
      tickProperty(boxes.at(i));
    }
  };
  tickBox = function(box, i) {
    var count;
    count = box.get('count') + 1;
    return box.set({
      count: count,
      top: Math.sin(count / 10) * 10,
      left: Math.cos(count / 10) * 10,
      color: count % 255,
      content: count % 100,
      i: i
    });
  };
  setBox = function() {
    var i, _i;
    for (i = _i = 0; 0 <= N ? _i < N : _i > N; i = 0 <= N ? ++_i : --_i) {
      tickBox(boxes.at(i), i);
    }
  };
  boxValue = function(box, i) {
    var count;
    count = box.count + 1;
    return {
      count: count,
      top: Math.sin(count / 10) * 10,
      left: Math.cos(count / 10) * 10,
      color: count % 255,
      content: count % 100,
      i: i
    };
  };
  setAll = function() {
    var box, i, previous, value, _i, _len;
    previous = boxes.get();
    value = [];
    for (i = _i = 0, _len = previous.length; _i < _len; i = ++_i) {
      box = previous[i];
      value.push(boxValue(box, i));
    }
    return boxes.set(value);
  };
  frames = 0;
  start = fn = timeout = null;
  run = function() {
    var fps;
    fn();
    if (frames++ === 20) {
      fps = frames * 1000 / (new Date - start);
      model.set('_fps', fps.toFixed(1));
      frames = 0;
      start = +(new Date);
    }
    return timeout = setTimeout(run, 0);
  };
  modes = {
    setProperty: setProperty,
    setBox: setBox,
    setAll: setAll
  };
  app.start = function(e, el) {
    var mode;
    clearTimeout(timeout);
    mode = el.innerHTML;
    model.set('_bindProperties', mode === 'setProperty');
    model.set('_mode', mode);
    fn = modes[mode];
    frames = 0;
    start = +(new Date);
    return run();
  };
  return app.stop = function() {
    return clearTimeout(timeout);
  };
});