| GLOW EFFECT VIA ACTIONSCRIPT as3 |
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This tutorial will show you how to create and control basic glowing effects using only actionscript 3.0. At the end you should get something like the example below:
Open new actionscript 3.0 flash file and create or insert object you want to add the glowing effect to. Convert it to movieclip and name it start_mc, or use other name just make sure it matches the name used in actionscript.
Select first frame and insert following actionscript code:
stop();
var i:Number=0;
stage.addEventListener(Event.ENTER_FRAME,glowUP);
function glowUP(e:Event) {
i++;
var glow:GlowFilter = new GlowFilter();
glow.color=0xFF0000;
glow.alpha=1;
glow.blurX=i;
glow.blurY=i;
glow.quality=BitmapFilterQuality.HIGH;
star_mc.filters=[glow];
if (i>50) {
gotoAndStop(2);
}
}
Line 4 creates stage listener which runs the glowUP function every time frame loads. The function itself sets the parameters of glowing filter such as alpha, blurX and Y and quality. Then assignes
this GlowFilter to star_mc movieclip. When i variable reaches 50 it moves stage to frame 2. Insert this frame on timeline and copy the movieclip from previous frame on the same spot ( you can use shift+ctr+v ). Name this one
star2_mc. Open actions pannel for second frame and insert this actionscript code:
stop();
var j:Number=50;
stage.addEventListener(Event.ENTER_FRAME,glowDOWN);
function glowDOWN(e:Event){
j--;
var glow1:GlowFilter = new GlowFilter();
glow1.color = 0xFF0000;
glow1.alpha = 1;
glow1.blurX = j;
glow1.blurY = j;
glow1.quality = BitmapFilterQuality.HIGH;
star2_mc.filters = [glow1];
if(j<2){
gotoAndStop(1);
}
}
This function works exactly like script on previous frame with one difference. Instead of increasing the glow , this one is decreasing it. When j reaches 2, it moves stage to first frame creating infinite loop.
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