取caurina 舍gs --TweenLite

取caurina 舍gs --TweenLite
2010年07月24日
　　今天重新去了一下 gs  网站！发现好像TweenLite不是免费类库了！ 商业用途需要收费！
　　所以只好用caurina 
　　在国外，  caurina 商业应用最广泛！主要得益于它的licese 是免费的 !可用于商业开发：
　　下面是caurina的用法  和TwenLite类似！:
　　教程网站：
　　http://www.flepstudio.org/forum/tutorials/1553-cau rina-tweener-zeh-fernando-tutorial-1-a.html
　　http://www.flashuser.net/flash-actionscript-as3/us ing-caurina-tweener-class-as3.html
　　以及关于bezier的用法 :  注意   _bezier  _color 的写法前面有一下划线
　　_bezier的值是一数组 Array
　　下面是摘自老外的tutorial
　　Lets say you want to use Tweener to animate a camera in your PV3D Scene from z:0 to z:1400... but you want it to animate along a path with smooth bezier curves. Piece of cake! Here is how you do it.
　　Example (don't freak, there's a lot more comments than there is code):
　　//first you will need to import your Tweener classes
　　//in this case, also import the CurveModifiers class
　　import caurina.transitions.Tweener;
　　import caurina.transitions.properties.CurveModifiers;
　　//instantiate the CurveModifiers
　　CurveModifiers.init();
　　//create an Array that will hold the various bezier curve points
　　//the values indicate the that camera will swing from the left to the right
　　var curvePath:Array = new Array();
　　curvePath.push({x:400});
　　curvePath.push({x:-400});
　　curvePath.push({x:400});
　　curvePath.push({x:-400});
　　//you could also add in additional bezier curve point paramerts
　　//such as curvePath.push({x:400, y:200, z:200});
　　//set up a function to set the default position of the camera
　　//and to instantiate a tweener animation
　　//note that there is an additional parameter "_bezier" in the Tweener parameters
　　//in the "_bezier" parameter we passed in our curvePath array
　　function startTween():void
　　{
　　camera.z = -200;
　　Tweener.addTween(camera, {
　　x:0,
　　z:1400,
　　_bezier:curvePath,      
　　time:12,
　　transition:"linear",
　　onComplete:startTween});
　　}
　　//lastly, call the startTween function to fire it off
　　//since the Tweener function has an onComplete parameter
　　//of startTween the animation will loop continuously
　　startTween();
　　_bezier的值是一个数组: