var ld = new Loader(), stage = new Stage("#ourCanvas", localStorage.webgl == "1"), bmp;
ld.loadRes([
    { id: "atLogo", src: "../asset/img/atLogo.png" }
]);
ld.complete(function () {
    bmp = new Bitmap(ld.get("atLogo"));
    //（0.5,0.5）==〉The center is the point of rotation
    bmp.originX = 0.5;
    bmp.originY = 0.5;
    bmp.x = 240;
    bmp.y = 240;
    //bind click event, the event monitor can be accurate to pixel
    bmp.on("click", function () {
        //apply a random filter to the bmp
        bmp.setFilter(Math.random(), Math.random(), Math.random(), 1);
    })
    //add object to stage
    stage.add(bmp);
           
    var step = 0.01;
    //loop
    stage.onTick(function () {
        bmp.rotation += 0.5;
        if (bmp.scaleX > 1.5||bmp.scaleX < 0.5) {
            step *= -1;
        }
        bmp.scaleX += step;
        bmp.scaleY += step;
    })
});