public void CollisionWithBox(){
		for(Particle particle:particles){
			if(box.isInBox(particle.getPosStar()) == false) {
				box.ForceInsideBox(particle.getPosStar(), particle.getVelocity());
			}
			if(stick.isInBox(particle.getPosStar()) == true){
				stick.ForceOutsideBox(particle.getPosStar(), particle.getVelocity());
			}
		}
	}