Logo firework

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Source code

Because the initial velocity for particles is based on a zone, and because we can make zones from bitmap data objects and display objects, it's relatively easy to create effects like the one above. The initial velocity for the particles uses a zone derived from the logo image. Add a little gravity and blur and this is the result.

var emitter:Emitter2D = new Emitter2D();
emitter.counter = new Blast( 1500 );

emitter.addInitializer( new ColorInit( 0xFFFF3300, 0xFFFFFF00 ) );
emitter.addInitializer( new Lifetime( 6 ) );
emitter.addInitializer( new Position( new DiscZone( new Point( 0, 0 ), 10 ) ) );

var bitmapData:BitmapData = new Logo( 265, 80);
emitter.addInitializer( new Velocity( new BitmapDataZone( bitmapData, -132, -300 ) ) );			

emitter.addAction( new Age( Quadratic.easeIn ) );
emitter.addAction( new Fade( 1.0, 0 ) );
emitter.addAction( new Move() );
emitter.addAction( new LinearDrag( 0.5 ) );
emitter.addAction( new Accelerate( 0, 70 ) );

emitter.addEventListener( EmitterEvent.EMITTER_EMPTY, restart );

var renderer:PixelRenderer = new PixelRenderer( new Rectangle( 0, 0, 500, 300 ) );
renderer.addFilter( new BlurFilter( 2, 2, 1 ) );
renderer.addFilter( new ColorMatrixFilter( [ 1,0,0,0,0,0,1,0,0,0,0,0,1,0,0,0,0,0,0.96,0 ] ) );
renderer.addEmitter( emitter );
addChild( renderer );

emitter.x = 250;
emitter.y = 300;
emitter.start( );
		
function restart( ev:EmitterEvent ):void
{
	Emitter2D( ev.target ).start();
}