PSystem: P A R T I C L E S Y S T E M S P L U G I N F O R P R O C E S S I N G A little physics goes a long way. A particle system is a simple physics model that deals only with point-masses and forces. That means that—as opposed to rigid-body models—objects in particle systems occupy no volume. Their behavior is quite simple but very powerful. A particle is an object with a location an