Method createTween

packages/fairygui/src/tween/TweenManager.ts:22–38

* Create a new tween * 创建新补间

()

     * 创建新补间
     */
    public static createTween(): GTweener {
        if (!TweenManager._inited) {
            TweenManager.init();
        }

        let tweener: GTweener;
        if (TweenManager._tweenPool.length > 0) {
            tweener = TweenManager._tweenPool.pop()!;
        } else {
            tweener = new GTweener();
        }

        tweener._init();
        TweenManager._activeTweens[TweenManager._totalActiveTweens++] = tweener;

        return tweener;
    }

    /**
     * Check if target is being tweened