egret 示例實戰二：實現愛心縮放和旋轉動畫

1.新建一個TestIndex類，聲明愛心對象

private _love;//愛心對象

2.引入要展示的愛心對象

//引入愛心對象
    this._love = CommonFun.creatBitmapByName("love_png");
    this.addChild(this._love);

3.設置愛心對象居中

//設置愛心居中顯示
    this._love.anchorOffsetX = this._love.width / 2;
    this._love.anchorOffsetY = this._love.height / 2;
    this._love.x = Main.instance.width * .5;
    this._love.y = Main.instance.height * .5;

4.利用Tween動畫設置愛心對象不停縮放

//設置愛心縮放顯示
  egret.Tween.get(this._love,{loop:true}).
       to({scaleX:0.5,scaleY:0.5},800,egret.Ease.sineIn).
       to({scaleX:1,scaleY:1},800,egret.Ease.sineOut);

5.利用Tween動畫實現愛心旋轉

//設置愛心旋轉顯示
   egret.Tween.get(this._love,{loop:true}).
        to({rotation:360},2000,egret.Ease.sineIn);

 

 

6.利用動態幀頻實現愛心旋轉

this.addEventListener(egret.Event.ENTER_FRAME,()=>{
     // console.log('img.rotation = '+img.rotation);
     img.rotation += 3;
},this);