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(function() {
var maxVerticalOffset = 50;
var minimumDiameter = 30;
var centerDiameter = 90;
var sizeVariance = 60;
var travelDistance = 50;
var opacityMultiplier = 30;
var FocusElement = Utilities.createClass(
function(stage)
{
var size = minimumDiameter + sizeVariance;
// Size and blurring are a function of depth.
this._depth = Pseudo.random();
var distance = Utilities.lerp(this._depth, 0, sizeVariance);
size -= distance;
var top = Stage.random(0, stage.size.height - size) - stage.maxBlurValue * 3;
var left = Stage.random(0, stage.size.width - size) - stage.maxBlurValue * 3;
this.container = document.createElement('div');
this.container.style.width = (size + stage.maxBlurValue * 6) + "px";
this.container.style.height = (size + stage.maxBlurValue * 6) + "px";
this.container.style.top = top + "px";
this.container.style.left = left + "px";
this.container.style.zIndex = Math.round((1 - this._depth) * 10);
this.particle = Utilities.createElement("div", {}, this.container);
this.particle.style.width = size + "px";
this.particle.style.height = size + "px";
this.particle.style.top = (stage.maxBlurValue * 3) + "px";
this.particle.style.left = (stage.maxBlurValue * 3) + "px";
var depthMultiplier = Utilities.lerp(1 - this._depth, 0.8, 1);
this._sinMultiplier = Pseudo.random() * Stage.randomSign() * depthMultiplier * travelDistance;
this._cosMultiplier = Pseudo.random() * Stage.randomSign() * depthMultiplier * travelDistance;
}, {
hide: function()
{
this.container.style.display = "none";
},
show: function()
{
this.container.style.display = "block";
},
animate: function(stage, sinFactor, cosFactor)
{
var top = sinFactor * this._sinMultiplier;
var left = cosFactor * this._cosMultiplier;
Utilities.setElementPrefixedProperty(this.container, "filter", "blur(" + stage.getBlurValue(this._depth) + "px) opacity(" + stage.getOpacityValue(this._depth) + "%)");
this.container.style.transform = "translate3d(" + left + "%, " + top + "%, 0)";
}
});
var FocusStage = Utilities.createSubclass(Stage,
function()
{
Stage.call(this);
}, {
movementDuration: 2500,
focusDuration: 1000,
centerObjectDepth: 0.0,
minBlurValue: 1.5,
maxBlurValue: 15,
maxCenterObjectBlurValue: 5,
initialize: function(benchmark, options)
{
Stage.prototype.initialize.call(this, benchmark, options);
this._testElements = [];
this._focalPoint = 0.5;
this._offsetIndex = 0;
this._centerElement = document.getElementById("center-text");
this._centerElement.style.width = (centerDiameter + this.maxCenterObjectBlurValue * 6) + "px";
this._centerElement.style.height = (centerDiameter + this.maxCenterObjectBlurValue * 6) + "px";
this._centerElement.style.zIndex = Math.round(10 * this.centerObjectDepth);
var particle = document.querySelector("#center-text div");
particle.style.width = centerDiameter + "px";
particle.style.height = centerDiameter + "px";
particle.style.top = (this.maxCenterObjectBlurValue * 3) + "px";
particle.style.left = (this.maxCenterObjectBlurValue * 3) + "px";
var blur = this.getBlurValue(this.centerObjectDepth, true);
Utilities.setElementPrefixedProperty(this._centerElement, "filter", "blur(" + blur + "px)");
},
complexity: function()
{
return 1 + this._offsetIndex;
},
tune: function(count)
{
if (count == 0)
return;
if (count < 0) {
this._offsetIndex = Math.max(0, this._offsetIndex + count);
for (var i = this._offsetIndex; i < this._testElements.length; ++i)
this._testElements[i].hide();
return;
}
var newIndex = this._offsetIndex + count;
for (var i = this._testElements.length; i < newIndex; ++i) {
var obj = new FocusElement(this);
this._testElements.push(obj);
this.element.appendChild(obj.container);
}
for (var i = this._offsetIndex; i < newIndex; ++i)
this._testElements[i].show();
this._offsetIndex = newIndex;
},
animate: function()
{
var time = this._benchmark.timestamp;
var sinFactor = Math.sin(time / this.movementDuration);
var cosFactor = Math.cos(time / this.movementDuration);
var focusProgress = 0.5 + 0.5 * Math.sin(time / this.focusDuration);
this._focalPoint = focusProgress;
Utilities.setElementPrefixedProperty(this._centerElement, "filter", "blur(" + this.getBlurValue(this.centerObjectDepth, true) + "px)");
for (var i = 0; i < this._offsetIndex; ++i)
this._testElements[i].animate(this, sinFactor, cosFactor);
},
getBlurValue: function(depth, isCenter)
{
if (isCenter)
return 1 + Math.abs(depth - this._focalPoint) * (this.maxCenterObjectBlurValue - 1);
return Utilities.lerp(Math.abs(depth - this._focalPoint), this.minBlurValue, this.maxBlurValue);
},
getOpacityValue: function(depth)
{
return Math.max(1, opacityMultiplier * (1 - Math.abs(depth - this._focalPoint)));
},
});
var FocusBenchmark = Utilities.createSubclass(Benchmark,
function(options)
{
Benchmark.call(this, new FocusStage(), options);
}
);
window.benchmarkClass = FocusBenchmark;
}());
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