This post was mentioned on Twitter by ActiveDen: Convert an Image to Black and White with AS3 http://bit.ly/3xchpD...

so , what can I do?

i use it with Tween class like this

import fl.transitions.easing.*;
import fl.transitions.Tween;
import fl.transitions.TweenEvent;
import flash.filters.ColorMatrixFilter;
import fl.motion.AdjustColor;

var color:AdjustColor;
var colorMatrix:ColorMatrixFilter;
var matrix:Array;
var filterBW:Array;
var saturation = 0;
var brightness = 0;
var contrast = 0;

image_mc.addEventListener(MouseEvent.MOUSE_OVER,over);
image_mc.addEventListener(MouseEvent.MOUSE_OUT,out);

function over(e:MouseEvent):void {
var t:Number = 2;
var tw_over:Tween = new Tween(image_mc,”x”,Strong.easeIn,image_mc.x, image_mc.x, t,true);
tw_over.addEventListener(TweenEvent.MOTION_CHANGE, function(e){
if(saturation>-100){
saturation = -e.currentTarget.time*100/t;
color = new AdjustColor();
color.brightness=0;
color.contrast=0;
color.hue=0;
color.saturation=saturation;
matrix=color.CalculateFinalFlatArray();
colorMatrix=new ColorMatrixFilter(matrix);
filterBW=[colorMatrix];
image_mc.filters=filterBW;
}
});
}
function out(e:MouseEvent):void {
var t:Number = 2;
var tw_out:Tween = new Tween(image_mc,”x”,Strong.easeIn,image_mc.x, image_mc.x, t,true);
tw_out.addEventListener(TweenEvent.MOTION_CHANGE, function(e){
if(saturation<0){
saturation = (e.currentTarget.time*100/t) – 100;
color = new AdjustColor();
color.brightness=0;
color.contrast=0;
color.hue=0;
color.saturation=saturation;
matrix=color.CalculateFinalFlatArray();
colorMatrix=new ColorMatrixFilter(matrix);
filterBW=[colorMatrix];
image_mc.filters=filterBW;
}
});
tw_out.addEventListener(TweenEvent.MOTION_FINISH, function(){
image_mc.filters=[];
saturation = 0;
});
}