PhysX Switch Operator

Turn Off Simulation group

You can use this option to convert the particle simulation temporarily from dynamic to kinematic. Dynamic particles' animation and movement is defined by the PhysX simulation, while the animation of kinematic particles is driven instead by the standard Particle Flow operators. However, kinematic particles can influence dynamic particles because the shape and motion of kinematic particles is accounted for in the simulation: Kinematic particles can collide with dynamic particles, thus affecting their simulated motion.

The PhysX engine does not control motion of the kinematic particles, so their shapes can overlap. This can create a potential problem if particles are kinematic in one event and dynamic in the next. The shape operator can create a "motion explosion" when the particle move to the next event, because PhysX engine has to resolve the overlapping of collision shapes that occurred while particles were kinematic.

The Turn Off Simulation timing can be controlled by the timing parameters in the group, similar to the timing setup in the Match Position Or Speed group.

Example:  PhysXSwitch_TurnOffSimulation.zip