里面代码：

package
{
  import flash.display.Bitmap;
  import flash.display.Sprite;
  import flash.geom.Point;
  import flash.geom.Rectangle;
  
  import org.flintparticles.actions.*;
  import org.flintparticles.counters.*;
  import org.flintparticles.displayObjects.RadialDot;
  import org.flintparticles.emitters.Emitter;
  import org.flintparticles.initializers.*;
  import org.flintparticles.renderers.*;
  import org.flintparticles.zones.*;  
  public class LogoFire extends Sprite
  {
    [Embed(source="assets/flint.png")]
    public var Logo:Class;
    private var emitter:Emitter;
    public function LogoFire()
    {
      emitter = new Emitter();
      emitter.counter = new Steady( 250 );
      
      emitter.addInitializer( new Lifetime( 1.5 ) );
      emitter.addInitializer( new Velocity( new DiscSectorZone( new Point( 0, 0 ), 20, 10, -Math.PI, 0 ) ) );
      var bitmap:Bitmap = new Logo();
      emitter.addInitializer( new Position( new BitmapDataZone( bitmap.bitmapData ) ) );
      emitter.addInitializer( new ImageClass( RadialDot, 7 ) );
      
      emitter.addAction( new Age() );
      emitter.addAction( new Move() );
      emitter.addAction( new LinearDrag( 1 ) );
      emitter.addAction( new Accelerate( 0, -40 ) );
      emitter.addAction( new ColorChange( 0xFFFF9900, 0x00CC0000 ) );
      emitter.addAction( new Scale( 1, 1.5 ) );
      
      var renderer:BitmapRenderer = new BitmapRenderer( new Rectangle( 0, 0, 500, 200 ) );
      emitter.renderer = renderer;
      addChild( renderer );
      
      emitter.x = 118;
      emitter.y = 70;
      emitter.start( );
      addChild( bitmap );
      bitmap.x = 118;
      bitmap.y = 70;
    }
  }
}