void ofxPhysics2d::removeAll(){
	removeAllParticles();
	removeAllConstraints();
}
void CC3ParticleEmitter::stop() 
{
	pause();						// Stop emitting particles...
	removeAllParticles();			// ...and kill those already emitted.
	m_particles->removeAllObjects();
}
ParticleEmitter::~ParticleEmitter()
{
	removeAllParticles();
}