BitmapData Glow Trails

Many people have created trails using BitmapData so today I actually learned how to do it. This is really fun stuff!

[as]import mx.transitions.easing.*;

import mx.transitions.Tween;

import flash.display.BitmapData;

import flash.filters.*;

import flash.geom.ColorTransform;

var bmd:BitmapData = new BitmapData(600,400,true,0×00000000);

this.createEmptyMovieClip(“bmdc”,1);

this.createEmptyMovieClip(“ballc”,2);

ballc.attachMovie(“ball”,”ball”,0);

var bf:BlurFilter = new BlurFilter(5,5,1);

var gf:GlowFilter = new GlowFilter(0x0099CC,30,35,35,1,1,false,false);

bmdc.filters = [bf,gf];

var ct:ColorTransform = new ColorTransform(.5,.9,.2,.99,1,1,.7,.99);

bmdc.attachBitmap(bmd,0);

function moveIt(who) {

var tw:Tween = new Tween(who,”_x”,Normal.easeOut,who._x,Math.random()*Stage.width,2,true);

var tw2:Tween = new Tween(who,”_y”,Normal.easeOut,who._y,Math.random()*Stage.height,2,true);

var tw3:Tween = new Tween(who,”_rotation”,Normal.easeOut,who._rotation,Math.random()*720,2,true);

tw.onMotionStopped = function() {

moveIt(who);

}

}

this.onEnterFrame = function() {

bmd.draw(ballc);

bmd.colorTransform(bmd.rectangle,ct);

}

moveIt(ballc.ball);

[/as]