Fade in letter by letter...

Question

Hello,
does any have idea if is possible make flash fade in letter by letter animation? I'm talking about animation from 0% to 100% alpha (in for example six frames), not just simple loading letter after letter from some text. Not sure if it's possible to touch specific character in text area and somehow edit alpha of it.
I'll be glad for any advices, thanks : )
Have a nice day

Answer 1

embed a font, assign it a linkage id (eg, ArialRegID) and you can use:
import mx.transitions.Tween;
import mx.transitions.easing.None;
var tfor:TextFormat = new TextFormat();
tfor.color = 0xff0000;
tfor.size = 14;
tfor.font = "ArialRegID";
var parent_mc:MovieClip = this.createEmptyMovieClip("parent_mc",this.getNextHighestDepth());
fadeTextF("this is text to fade",parent_mc,tfor,1,.1,5,20,10);  // do not change any code except in this line where you assign the parameters for your fade and the textformat you want applied to your text.
function fadeTextF(s:String,mc:MovieClip,tfor:TextFormat,fadeRate:Number,displayRate:Number,letter Spacing:Number,x:Number,y:Number):Void{
    var prevX:Number = 0;
    var a:Array = s.split("");
    for(var i:Number=0;i<a.length;i++){
        var tf:TextField = mc.createTextField("tf_"+i,i,prevX,y,10,10);
        tf.embedFonts = true;
        tf.autoSize = "left";
        tf.multiline = false;
        tf.text = a[i];
        tf.setTextFormat(tfor);
        tf._alpha = 0;
        prevX+=tf._width+letterSpacing;
        setTimeout(function(tf:TextField){new Tween(tf, "_alpha", None.easeNone, 0, 100, fadeRate, true);},displayRate*i*1000,tf);
    mc._x = x;
    mc._y = y;
p.s. please mark helpful/correct responses.