// use adobe’s encoder to create a byteArray
var jpgEncoder:JPGEncoder = new JPGEncoder( 60 );
var byteArray:ByteArray = jpgEncoder.encode( bitmapData );

// set an filename
var filename:String = "cool-image.jpg";

// get current path
var file:File = File.applicationDirectory.resolvePath( filename );

// get the native path
var wr:File = new File( file.nativePath );

// create filestream
var stream:FileStream = new FileStream();

//  open/create the file, set the filemode to write in order to save.
stream.open( wr , FileMode.WRITE);

// write your byteArray into the file.
stream.writeBytes ( byteArray, 0, byteArray.length );

// close the file.
stream.close();

// That’s it.
 

package
{
    import com.adobe.images.*;
    import flash.display.*;
    import flash.events.*;
    import flash.filesystem.*;
    import flash.filters.*;
    import flash.geom.*;
    import flash.text.*;
    import flash.utils.*;
    import nl.stroep.utils.*;
   
    public class Main extends Sprite
    {
        public function Main():void
        {          
            var bitmapData:BitmapData = new BitmapData (1280, 1024, false, 0×000000 );
           
            // create colorful radial lines
            var shape:Shape = new Shape();
            shape.graphics.moveTo ((bitmapData.width/2), (bitmapData.height/2))
            for (var i:Number = 0; i < 1900; i++)
            {
                // create some weird colors using sinus
                shape.graphics.lineStyle( 30, (Math.sin( i * 9 ) * i / 200) * 0xffffff, 0.4 );
                // do some weird sin/cos moves
                shape.graphics.lineTo ((bitmapData.width/2) + (Math.sin( i/3 )*i/2),  (bitmapData.height/2) + (Math.cos( i/3 )*i/2) );
            }                  
            // add it multiple times using other blendmodes, isn’t that what we do all the time in PhotoShop?
            bitmapData.draw ( shape, null, null, BlendMode.NORMAL );
            bitmapData.draw ( shape, null, null, BlendMode.ADD );
            bitmapData.draw ( shape, null, null, BlendMode.MULTIPLY );
            bitmapData.draw ( shape, null, null, BlendMode.OVERLAY );
            // cool! filters! Add some blur to our lines to make a nice blurry background
            bitmapData.applyFilter( bitmapData, bitmapData.rect, new Point() , new BlurFilter( 40, 40, 5 ) );
           
            // create colorful radial lines
            var anotherShape:Shape = new Shape();
            anotherShape.graphics.moveTo ((bitmapData.width/2), (bitmapData.height/2) );       
            for (var j:Number = 0; j < 1900; j++)
            {              
                // create some weird lines with weird sizes
                var lineWidth:Number = 50 – ((j / 50) >> 0);
                var color:Number = (Math.sin( j ) * j / 200) * 0xFFFFFF
                anotherShape.graphics.lineStyle( lineWidth, color, 0.2, false, LineScaleMode.NORMAL, CapsStyle.SQUARE, JointStyle.MITER );
                anotherShape.graphics.lineTo ((bitmapData.width/2) + (Math.sin( j/3 )*j/2),  (bitmapData.height/2) + (Math.cos( j/4 )*j/2) );
            }   
            // cool! filters! Add some blur to our lines to make a little blurry
            bitmapData.applyFilter( bitmapData, bitmapData.rect, new Point() , new BlurFilter( 5, 5, 5 ) );
            // blendmode ADD is awesome
            bitmapData.draw ( anotherShape, null, null, BlendMode.OVERLAY );
           
            // create some text
            var textfield:TextField = new TextField ();
            textfield.antiAliasType = AntiAliasType.NORMAL;
            textfield.htmlText = "<font face=’Arial’ color=’#FFFFFF’ size=’60′>FUN WITH BITMAPDATA</font> <br/> <font face=’verdana’ color=’#FFFFFF’ size=’20′><B>CREATE YOUR OWN WALLPAPER WITH FLASH</b></font>";
            textfield.autoSize = TextFieldAutoSize.LEFT;           
           
            // cool! filters! Add blur to your text
            textfield.filters = [ new BlurFilter(20,20,3) ]
           
            // draw textfield into bitmapdata, and use a matrix to set its position to center screen
            bitmapData.draw ( textfield, new Matrix( 1, 0, 0, 1, (bitmapData.width/2) – (textfield.textWidth/2) ,(bitmapData.height/2) – (textfield.textHeight/2)), null, BlendMode.ADD);          
                   
            // reset the filters, just add DropShadow
            textfield.filters = [ new DropShadowFilter( 0, 45, 0, 0.3, 5, 5, 2, 5 ) ]
           
            // draw textfield again
            bitmapData.draw ( textfield, new Matrix( 1, 0, 0, 1, (bitmapData.width/2) – (textfield.textWidth/2) ,(bitmapData.height/2) – (textfield.textHeight/2) ) );         
           
            // show the bitmapData, just add it to the stage, using the Bitmap Class
            this.addChild ( new Bitmap ( bitmapData ) )

            // use adobe’s encoder to create a byteArray
            var jpgEncoder:JPGEncoder = new JPGEncoder( 60 );
            var byteArray:ByteArray = jpgEncoder.encode( bitmapData );

            // set an filename
            var filename:String = "cool-wallpaper.jpg";

            // get current path
            var file:File = File.applicationDirectory.resolvePath( filename );

            // get the native path
            var wr:File = new File( file.nativePath );

            // create filestream
            var stream:FileStream = new FileStream();

            //  open/create the file, set the filemode to write; because we are going to save
            stream.open( wr , FileMode.WRITE);

            // write your byteArray into the file.
            stream.writeBytes ( byteArray, 0, byteArray.length );

            // close the file. That’s it.
            stream.close();
                   
        }      
    }
}