1 files changed, 48 insertions, 0 deletions
diff --git a/third_party/webkit/PerformanceTests/MotionMark/tests/dom/resources/leaves.js b/third_party/webkit/PerformanceTests/MotionMark/tests/dom/resources/leaves.js
new file mode 100644
index 0000000000..604c973667
--- /dev/null
+++ b/third_party/webkit/PerformanceTests/MotionMark/tests/dom/resources/leaves.js
@@ -0,0 +1,48 @@
+Leaf = Utilities.createSubclass(Particle,
+    function(stage)
+    {
+        this.element = document.createElement("img");
+        this.element.setAttribute("src", Stage.randomElementInArray(stage.images).src);
+        stage.element.appendChild(this.element);
+
+        Particle.call(this, stage);
+    }, {
+
+    sizeMinimum: 20,
+    sizeRange: 40,
+
+    reset: function()
+    {
+        Particle.prototype.reset.call(this);
+        this.element.style.width = this.size.x + "px";
+        this.element.style.height = this.size.y + "px";
+        this._opacity = .01;
+        this._opacityRate = 0.02 * Stage.random(1, 6);
+        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._opacity += this._opacityRate;
+        if (this._opacity > 1) {
+            this._opacity = 1;
+            this._opacityRate *= -1;
+        } else if (this._opacity < 0 || 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();
+        this.element.style.opacity = this._opacity;
+    }
+});