Example: Combining basic filters

Flash Player 9 and later, Adobe AIR 1.0 and later
The following code example uses several basic filters, combined with a Timer for creating repeating actions, to create an animated traffic light simulation.
import flash.display.Shape; 
import flash.events.TimerEvent; 
import flash.filters.BitmapFilterQuality; 
import flash.filters.BitmapFilterType; 
import flash.filters.DropShadowFilter; 
import flash.filters.GlowFilter; 
import flash.filters.GradientBevelFilter; 
import flash.utils.Timer; 
 
var count:Number = 1; 
var distance:Number = 8; 
var angleInDegrees:Number = 225; // opposite of 45 degrees 
var colors:Array = [0xFFFFCC, 0xFEFE78, 0x8F8E01]; 
var alphas:Array = [1, 0, 1]; 
var ratios:Array = [0, 128, 255]; 
var blurX:Number = 8; 
var blurY:Number = 8; 
var strength:Number = 1; 
var quality:Number = BitmapFilterQuality.HIGH; 
var type:String = BitmapFilterType.INNER; 
var knockout:Boolean = false; 
 
// Draw the rectangle background for the traffic light. 
var box:Shape = new Shape(); 
box.graphics.lineStyle(); 
box.graphics.beginFill(0xFEFE78); 
box.graphics.drawRect(100, 50, 90, 200); 
box.graphics.endFill(); 
 
// Draw the 3 circles for the three lights. 
var stopLight:Shape = new Shape(); 
stopLight.graphics.lineStyle(); 
stopLight.graphics.beginFill(0xFF0000); 
stopLight.graphics.drawCircle(145,90,25); 
stopLight.graphics.endFill(); 
 
var cautionLight:Shape = new Shape(); 
cautionLight.graphics.lineStyle(); 
cautionLight.graphics.beginFill(0xFF9900); 
cautionLight.graphics.drawCircle(145,150,25); 
cautionLight.graphics.endFill(); 
 
var goLight:Shape = new Shape(); 
goLight.graphics.lineStyle(); 
goLight.graphics.beginFill(0x00CC00); 
goLight.graphics.drawCircle(145,210,25); 
goLight.graphics.endFill(); 
 
// Add the graphics to the display list. 
addChild(box); 
addChild(stopLight); 
addChild(cautionLight); 
addChild(goLight); 
 
// Apply a gradient bevel to the traffic light rectangle. 
var gradientBevel:GradientBevelFilter = new GradientBevelFilter(distance, angleInDegrees, colors, alphas, ratios, blurX, blurY, strength, quality, type, knockout); 
box.filters = [gradientBevel]; 
 
// Create the inner shadow (for lights when off) and glow  
// (for lights when on). 
var innerShadow:DropShadowFilter = new DropShadowFilter(5, 45, 0, 0.5, 3, 3, 1, 1, true, false); 
var redGlow:GlowFilter = new GlowFilter(0xFF0000, 1, 30, 30, 1, 1, false, false); 
var yellowGlow:GlowFilter = new GlowFilter(0xFF9900, 1, 30, 30, 1, 1, false, false); 
var greenGlow:GlowFilter = new GlowFilter(0x00CC00, 1, 30, 30, 1, 1, false, false); 
 
// Set the starting state of the lights (green on, red/yellow off). 
stopLight.filters = [innerShadow]; 
cautionLight.filters = [innerShadow]; 
goLight.filters = [greenGlow]; 
 
// Swap the filters based on the count value. 
function trafficControl(event:TimerEvent):void 
{ 
    if (count == 4) 
    { 
        count = 1; 
    } 
     
    switch (count) 
    { 
        case 1: 
            stopLight.filters = [innerShadow]; 
            cautionLight.filters = [yellowGlow]; 
            goLight.filters = [innerShadow]; 
            break; 
        case 2: 
            stopLight.filters = [redGlow]; 
            cautionLight.filters = [innerShadow]; 
            goLight.filters = [innerShadow]; 
            break; 
        case 3: 
            stopLight.filters = [innerShadow]; 
            cautionLight.filters = [innerShadow]; 
            goLight.filters = [greenGlow]; 
            break; 
    } 
     
    count++; 
} 
 
// Create a timer to swap the filters at a 3 second interval. 
var timer:Timer = new Timer(3000, 9); 
timer.addEventListener(TimerEvent.TIMER, trafficControl); 
timer.start();