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1. • CommentAuthorkairos
   • CommentTimeJul 31st 2009 edited

    
   First of all many thanks for the great job done! I'm working with flint for the past weeks and I'm surprising with some nice features such as the transformation of a bitmap into particles.
   
   However, I can't use "createPixelParticlesFromBitmapData", always receive this error:
   
   -----
   TypeError: Error #2007: Parameter child must be non-null.
   at flash.display::DisplayObjectContainer/addChildAt()
   at org.flintparticles.twoD.renderers::DisplayObjectRenderer/addParticle()
   at org.flintparticles.common.renderers::SpriteRendererBase/addEmitter()
   at party_fla::MainTimeline/frame1()
   
   ------
   
   The exact code is this:
2. • CommentAuthorkairos
   • CommentTimeJul 31st 2009 edited

    
   
var c:BitmapData=new BitmapData(ximage,yimage,true,0);
c.draw(mc);

// ERROR!!!
//particles=Particle2DUtils.createPixelParticlesFromBitmapData(c,emitter.particleFactory,0,0);

// ALLRIGHT!!
particles=Particle2DUtils.createRectangleParticlesFromBitmapData(c,4,emitter.particleFactory,40,40);

firsttime();

function firsttime():void {
if (firsttim) {
particles_original=CloneParticleArray(particles);
firsttim=false;
}
}
emitter.addExistingParticles( particles, false );
renderer.addEmitter( emitter );
addChild( renderer );
stage.addEventListener( MouseEvent.MOUSE_UP, action );

var xa:Number=-200;
var ya:Number=yimage/2;
var moving = new Move ();
var explode=new Explosion(8,xa,ya,500);
function action( ev:MouseEvent ):void {
if (out) {
emitter.start();
emitter.addAction(explode);
emitter.addAction(moving);
out=false;
} else {
out=true;
emitter.removeAction(explode);
emitter.removeAction(moving);

for (var i:uint = 0; i<emitter.particles.length; i++) {
TweenLite.to((emitter.particles[i]),1, {x:particles_original[i].x, y:particles_original[i].y} );
}
}
}
function CloneParticleArray(source:Object):* {
copy = new ByteArray();
copy.writeObject(source);
copy.position=0;
return (copy.readObject());
}

3. • CommentAuthorRichard
   • CommentTimeAug 8th 2009

    
   Hi
   
   You can only use pixel particles with a PixelRenderer. You're trying to use them with a DisplayObjectRenderer.
   
   Richard