PIXI的學習-------（三）精靈的縮放和旋轉

 //Create a Pixi Application
    let app = new PIXI.Application({
            width: 256,
            height: 256,
            antialias: true,
            transparent: false,
            resolution: 1
        }
    );

    //Add the canvas that Pixi automatically created for you to the HTML document
    document.body.appendChild(app.view);

    //load an image and run the `setup` function when it's done
    PIXI.loader
        .add("images/cat.png")
        .load(setup);

    //This `setup` function will run when the image has loaded
    function setup() {

        //Create the cat sprite
        let cat = new PIXI.Sprite(PIXI.loader.resources["images/cat.png"].texture);
        //Change the sprite's position
        cat.x = 96;
        cat.y = 96;

        //或者用一句話cat.position.set(96,96);

        //Change the sprite's size
        cat.width = 80;
        cat.height = 120;

        //變爲原來大小的一半
//        cat.scale.x=0.5;
//        cat.scale.y=0.5;

        //cat.scale.set(0.5, 0.5);

        //圖像旋轉
        //以左上角爲錨點旋轉
//        cat.rotation=0.5;
        //以圖像中心點爲錨點旋轉
        cat.anchor.x=0.5;
        cat.anchor.y = 0.5;
        cat.rotation=0.5;


        //Add the cat to the stage
        app.stage.addChild(cat);