这个类文件跟Tween放在同一个目录下
这样就可以用Tween类来变化组件
就不用自己去写渐变函数了
用法:
与Tween差不多
如:
importmx.transitions.fanflash_Tween;
importmx.transitions.easing.Strong;
varfan=newfanflash_Tween(a,test,Strong.easeOut,260,100,6,true);
functiontest(t:Number){
_root.txt_txt.setSize(_root.txt_txt._width,t);
}
要先定义一个函数,有一个参数,这个参数就是用来变化的(当第二个参数为函数时,第一个参数就会没用,所以乱写都可以),刚刚因为须要而改的,不足之处一定有,凑和着用吧
如果第二个参数是字符的话,那就跟平常的TWEEN类一样了
示例:
点击浏览该文件
类文件(后缀改成AS):
fanflash_Tween.as
importmx.transitions.BroadcasterMX;
importmx.transitions.OnEnterFrameBeacon;
classmx.transitions.fanflash_Tween{
staticvar__initBeacon=OnEnterFrameBeacon.init();
staticvar__initBroadcaster=BroadcasterMX.initialize(fanflash_Tween.prototype,true);
publicvarisPlaying:Boolean;
publicvaraddListener:Function;
publicvarremoveListener:Function;
publicvarbroadcastMessage:Function;
publicvarobj:Object;
publicvarprop:String;
varfunc:Function=function(t,b,c,d){
returnc*t/d+b;
};
publicvarbegin:Number;
publicvarchange:Number;
publicvaruseSeconds:Boolean;
publicvarprevTime:Number;
publicvarprevPos:Number;
publicvarlooping:Boolean;
publicvarforp:Boolean;
publicvartf:Function;
privatevar_listeners:Array;
privatevar_duration:Number;
privatevar_time:Number;
privatevar_pos:Number;
privatevar_fps:Number;
privatevar_position:Number;
privatevar_startTime:Number;
privatevar_intervalID:Number;
privatevar_finish:Number;
functionsettime(t:Number):Void{
this.prevTime=this._time;
if(t>this.duration){
if(this.looping){
this.rewind(t-this._duration);
this.update();
this.broadcastMessage("onMotionLooped",this);
}else{
if(this.useSeconds){
this._time=this._duration;
this.update();
}
this.stop();
this.broadcastMessage("onMotionFinished",this);
}
}elseif(t<0){
this.rewind();
this.update();
}else{
this._time=t;
this.update();
}
}
functiongettime():Number{
returnthis._time;
}
functionsetduration(d:Number):Void{
this._duration=(d==null||d<=0)?_global.Infinity:d;
}
functiongetduration():Number{
returnthis._duration;
}
functionsetFPS(fps:Number):Void{
varoldIsPlaying=this.isPlaying;
this.stopEnterFrame();
this._fps=fps;
if(oldIsPlaying){
this.startEnterFrame();
}
}
functiongetFPS():Number{
returnthis._fps;
}
functionsetposition(p:Number):Void{
if(this.forp){
this.setPosition(p);
}else{
this.setFunction(p);
}
}
functionsetPosition(p:Number):Void{
this.prevPos=this._pos;
this.obj[this.prop]=this._pos=p;
this.broadcastMessage("onMotionChanged",this,this._pos);
updateAfterEvent();
}
functionsetFunction(p:Number):Void{
this.prevPos=this._pos;
this.tf(p);
this.broadcastMessage("onMotionChanged",this,this._pos);
updateAfterEvent();
}
functiongetposition():Number{
returnthis.getPosition();
}
functiongetPosition(t:Number):Number{
if(t==undefined){
t=this._time;
}
returnthis.func(t,this.begin,this.change,this._duration);
}
functionsetfinish(f:Number):Void{
this.change=f-this.begin;
}
functiongetfinish():Number{
returnthis.begin+this.change;
}
functionfanflash_Tween(obj,prop,func,begin,finish,duration,useSeconds){
OnEnterFrameBeacon.init();
if(!arguments.length){
return;
}
this.obj=obj;
if(typeof(prop)=="string"){
this.prop=prop;
this.forp=true;
}else{
this.tf=prop;
this.forp=false;
}
this.begin=begin;
this.position=begin;
this.duration=duration;
this.useSeconds=useSeconds;
if(func){
this.func=func;
}
this.finish=finish;
this._listeners=[];
this.addListener(this);
this.start();
}
functioncontinueTo(finish:Number,duration:Number):Void{
this.begin=this.position;
this.finish=finish;
if(duration!=undefined){
this.duration=duration;
}
this.start();
}
functionyoyo():Void{
this.continueTo(this.begin,this.time);
}
functionstartEnterFrame():Void{
if(this._fps==undefined){
_global.MovieClip.addListener(this);
}else{
this._intervalID=setInterval(this,"onEnterFrame",1000/this._fps);
}
this.isPlaying=true;
}
functionstopEnterFrame():Void{
if(this._fps==undefined){
_global.MovieClip.removeListener(this);
}else{
clearInterval(this._intervalID);
}
this.isPlaying=false;
}
functionstart():Void{
this.rewind();
this.startEnterFrame();
this.broadcastMessage("onMotionStarted",this);
}
functionstop():Void{
this.stopEnterFrame();
this.broadcastMessage("onMotionStopped",this);
}
functionresume():Void{
this.fixTime();
this.startEnterFrame();
this.broadcastMessage("onMotionResumed",this);
}
functionrewind(t):Void{
this._time=(t==undefined)?0:t;
this.fixTime();
this.update();
}
functionfforward():Void{
this.time=this._duration;
this.fixTime();
}
functionnextFrame():Void{
if(this.useSeconds){
this.time=(getTimer()-this._startTime)/1000;
}else{
this.time=this._time+1;
}
}
functiononEnterFrame():Void{
this.nextFrame();
}
functionprevFrame():Void{
if(!this.useSeconds){
this.time=this._time-1;
}
}
functiontoString():String{
return"[fanflash_Tween]";
}
privatefunctionfixTime():Void{
if(this.useSeconds){
this._startTime=getTimer()-this._time*1000;
}
}
privatefunctionupdate():Void{
this.position=this.getPosition(this._time);
}
}
