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Leaf = Utilities.createSubclass(Particle,
function(stage)
{
this.element = document.createElement("img");
this.element.setAttribute("src", Stage.randomElementInArray(stage.images).src);
var sizeString = this.sizeMinimum + "px";
this.element.style.width = sizeString;
this.element.style.height = sizeString;
stage.element.appendChild(this.element);
Particle.call(this, stage);
}, {
sizeMinimum: 25,
sizeRange: 0,
reset: function()
{
Particle.prototype.reset.call(this);
this._life = Stage.randomInt(20, 100);
this._position = new Point(Stage.random(0, this.maxPosition.x), Stage.random(-this.size.height, this.maxPosition.y));
this._velocity = new Point(Stage.random(-6, -2), .1 * this.size.y + Stage.random(-1, 1));
},
animate: function(timeDelta)
{
this.rotater.next(timeDelta);
this._position.x += this._velocity.x + 8 * this.stage.focusX;
this._position.y += this._velocity.y;
this._life--;
if (!this._life || this._position.y > this.stage.size.height)
this.reset();
if (this._position.x < -this.size.width || this._position.x > this.stage.size.width)
this._position.x = this._position.x - Math.sign(this._position.x) * (this.size.width + this.stage.size.width);
this.move();
},
move: function()
{
this.element.style.transform = "translate(" + this._position.x + "px, " + this._position.y + "px)" + this.rotater.rotateZ();
}
});
Utilities.extendObject(ParticlesStage.prototype, {
imageSrcs: [
"compass",
"console",
"contribute",
"debugger",
"inspector",
"layout",
"performance",
"script",
"shortcuts",
"standards",
"storage",
"styles",
"timeline"
],
images: [],
initialize: function(benchmark)
{
Stage.prototype.initialize.call(this, benchmark);
var lastPromise;
var images = this.images;
this.imageSrcs.forEach(function(imageSrc) {
var promise = this._loadImage("../master/resources/" + imageSrc + "100.png");
if (!lastPromise)
lastPromise = promise;
else {
lastPromise = lastPromise.then(function(img) {
images.push(img);
return promise;
});
}
}, this);
lastPromise.then(function(img) {
images.push(img);
benchmark.readyPromise.resolve();
});
},
_loadImage: function(src) {
var img = new Image;
var promise = new SimplePromise;
img.onload = function(e) {
promise.resolve(e.target);
};
img.src = src;
return promise;
},
animate: function(timeDelta)
{
this.focusX = 0.5 + 0.5 * Math.sin(Stage.dateFractionalValue(10000) * Math.PI * 2);
timeDelta /= 4;
this.particles.forEach(function(particle) {
particle.animate(timeDelta);
});
},
createParticle: function()
{
return new Leaf(this);
},
willRemoveParticle: function(particle)
{
particle.element.remove();
}
});
LeavesBenchmark = Utilities.createSubclass(Benchmark,
function(options)
{
Benchmark.call(this, new ParticlesStage(), options);
}, {
waitUntilReady: function() {
this.readyPromise = new SimplePromise;
return this.readyPromise;
}
});
window.benchmarkClass = LeavesBenchmark;
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