A visual shader node that accelerates particles. Particle accelerator can be used in "process" step of particle shader. It will accelerate the particles. Connect it to the Velocity output port. Defines in what manner the particles will be accelerated. The particles will be accelerated based on their velocity. The particles will be accelerated towards or away from the center. The particles will be accelerated tangentially to the radius vector from center to their position. Represents the size of the [enum Mode] enum.