Need help optimizing my code

1

What I wanted to do was draw multiple lines comming from the same point to a random point that moves around randomly. I then wanted to apply a blur filter. The effect produces a ray of light that resembles what you would see if you where underwater. It’s pretty cool, but after a while I found that the lag got worse (I think it was because of the huge “for” loop) anyway… I decided to convert all the lines to a bitmapdata and THEN apply a filter to it… This did take care of the growth in lag… But instead… It is now always in a constant lag that doesn’t change much.

Can anyone give me any tips on how I could optimize my code further or have I reached flash 8’s max potential in terms of performance?

K thx, here’s the code:

import flash.filters.BlurFilter;
import flash.display.BitmapData;
import flash.geom.Rectangle;
import flash.geom.Point;
center = new Object();
center.x = Stage.width/2;
center.y = Stage.height/2;
firstRun=true
num=100
damp = .95;
this.createEmptyMovieClip("star", this.getNextHighestDepth());
var prev=new Array()
var place=new Array()
blur=new BlurFilter(20,20,1)
this.createEmptyMovieClip("bmpHolder", this.getNextHighestDepth());
this.onEnterFrame = function () {
 star.clear()
 for (var i=0; i<num; i++) {
  if(firstRun){
  star.lineStyle(1, 0xFFFFFF, 100);
  star.moveTo(0, 100);
  prev*=new Object()
  prev*.cx=0
  prev*.cy=0
  prev*.x=0
  prev*.y=0
  place*=new Object()
  place*.cx=Math.random()*Stage.width/4+100
  place*.cy=Math.random()*Stage.height/4+100
  place*.x=Math.random()*Stage.width/4+100
  place*.y=Math.random()*Stage.height/4+100
  }
  prev*.cx+=Math.random()*2-1
  prev*.cy+=Math.random()*2-1
  prev*.x+=Math.random()*2-1
  prev*.y+=Math.random()*2-1
  prev*.cx*=damp
  prev*.cy*=damp
  prev*.x*=damp
  prev*.y*=damp
  place*.cx+=prev*.cx
  place*.cy+=prev*.cy
  place*.x+=prev*.x
  place*.y+=prev*.y
  star.lineStyle(1, 0xFFFFFF, 100);
  star.moveTo(0, 100);
  star.lineTo(place*.x,place*.y)
  //star.curveTo(place*.cx, place*.cy, place*.x, place*.y);
 }
 var bmp = new BitmapData(Stage.width,Stage.height,true,0x00FFFFFF)
 bmp.draw(star)
 star.clear()
 //bmp.applyFilter(bmp,new Rectangle(0,0,Stage.width,Stage.height),new Point(0,0),blur)
 bmp.applyFilter(bmp,new Rectangle(0,0,Stage.width,Stage.height),new Point(0,0),blur)
 bmpHolder.attachBitmap(bmp,1)
 if(firstRun){
  firstRun=false
 }
};
turtle_mc.swapDepths(this.getNextHighestDepth());

P.S. You will need a dark background to see the light rays.