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:
import mx.transitions.fanflash_Tween;
import mx.transitions.easing.Strong;
var fan = new fanflash_Tween(a, test, Strong.easeOut, 260, 100, 6, true);
function test(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:
类文件(后缀改成AS):
fanflash_Tween.as
import mx.transitions.BroadcasterMX;
import mx.transitions.OnEnterFrameBeacon;
class mx.transitions.fanflash_Tween {
static var __initBeacon = OnEnterFrameBeacon.init();
static var __initBroadcaster = BroadcasterMX.initialize(fanflash_Tween.prototype, true);
public var isPlaying:Boolean;
public var addListener:Function;
public var removeListener:Function;
public var broadcastMessage:Function;
public var obj:Object;
public var prop:String;
var func:Function = function (t, b, c, d) {
return c*t/d+b;
};
public var begin:Number;
public var change:Number;
public var useSeconds:Boolean;
public var prevTime:Number;
public var prevPos:Number;
public var looping:Boolean;
public var forp:Boolean;
public var tf:Function;
private var _listeners:Array;
private var _duration:Number;
private var _time:Number;
private var _pos:Number;
private var _fps:Number;
private var _position:Number;
private var _startTime:Number;
private var _intervalID:Number;
private var _finish:Number;
function set time(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);
}
} else if (t<0) {
this.rewind();
this.update();
} else {
this._time = t;
this.update();
}
}
function get time():Number {
return this._time;
}
function set duration(d:Number):Void {
this._duration = (d == null || d<=0) ? _global.Infinity : d;
}
function get duration():Number {
return this._duration;
}
function set FPS(fps:Number):Void {
var oldIsPlaying = this.isPlaying;
this.stopEnterFrame();
this._fps = fps;
if (oldIsPlaying) {
this.startEnterFrame();
}
}
function get FPS():Number {
return this._fps;
}
function set position(p:Number):Void {
if (this.forp) {
this.setPosition(p);
} else {
this.setFunction(p);
}
}
function setPosition(p:Number):Void {
this.prevPos = this._pos;
this.obj[this.prop] = this._pos=p;
this.broadcastMessage("onMotionChanged", this, this._pos);
updateAfterEvent();
}
function setFunction(p:Number):Void {
this.prevPos = this._pos;
this.tf(p);
this.broadcastMessage("onMotionChanged", this, this._pos);
updateAfterEvent();
}
function get position():Number {
return this.getPosition();
}
function getPosition(t:Number):Number {
if (t == undefined) {
t = this._time;
}
return this.func(t, this.begin, this.change, this._duration);
}
function set finish(f:Number):Void {
this.change = f-this.begin;
}
function get finish():Number {
return this.begin+this.change;
}
function fanflash_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();
}
function continueTo(finish:Number, duration:Number):Void {
this.begin = this.position;
this.finish = finish;
if (duration != undefined) {
this.duration = duration;
}
this.start();
}
function yoyo():Void {
this.continueTo(this.begin, this.time);
}
function startEnterFrame():Void {
if (this._fps == undefined) {
_global.MovieClip.addListener(this);
} else {
this._intervalID = setInterval(this, "onEnterFrame", 1000/this._fps);
}
this.isPlaying = true;
}
function stopEnterFrame():Void {
if (this._fps == undefined) {
_global.MovieClip.removeListener(this);
&