Question

好奇。 TweenLite / TweenMax是一个非常常见的动画库，我想知道有人会如何对TweenLite中使用的设计模式进行分类。对于那些不熟悉的人，这里有一些来自他们网站的示例代码：

//import the GreenSock classes
import com.greensock.*;
import com.greensock.easing.*;

//tween the MovieClip named "mc" to an alpha of 0.5 over the course of 3 seconds
TweenLite.to(mc, 3, {alpha:0.5});

//scale myButton to 150% (scaleX/scaleY of 1.5) using the Elastic.easeOut ease for 2     seconds
TweenLite.to(myButton, 2, {scaleX:1.5, scaleY:1.5, ease:Elastic.easeOut});

//tween mc3 in FROM 100 pixels above wherever it is now, and an alpha of 0. (notice the vars object defines the starting values instead of the ending values)
TweenLite.from(mc3, 1, {y:"-100", alpha:0});

//after a delay of 3 seconds, tween mc for 5 seconds, sliding it across the screen by changing its "x" property to 300, using the Back.easeOut ease to make it shoot past it and   come back, and then call the onFinishTween() function, passing two parameters: 5 and mc
TweenLite.to(mc, 5, {delay:3, x:300, ease:Back.easeOut, onComplete:onFinishTween,  onCompleteParams:[5, mc]});
function onFinishTween(param1:Number, param2:MovieClip):void {
trace("The tween has finished! param1 = " + param1 + ", and param2 = " + param2);
}

//call myFunction() after 2 seconds, passing 1 parameter: "myParam"
TweenLite.delayedCall(2, myFunction, ["myParam"]);

//use the object-oriented syntax to create a TweenLite instance and store it so we can   reverse, restart, or pause it later.
var myTween:TweenLite = new TweenLite(mc2, 3, {y:200, alpha:0.5, onComplete:myFunction});

//some time later (maybe in by a ROLL_OUT event handler for a button), reverse the tween, causing it to go backwards to its beginning from wherever it is now.
myTween.reverse();

//pause the tween
myTween.pause();

//restart the tween
myTween.restart();

//make the tween jump to exactly its 2-second point
myTween.currentTime = 2;

Answer 1

在他们传递关联数组而不是调用实际函数的地方，它是魔术容器反模式：http://c2.com/cgi/wiki?MagicContainer。这被认为是一个坏主意，因为你应该真正调用特定的函数而不是构造疯狂的参数包。

TweenLite设计模式

1 个答案: