Example 2

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What the scene does

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Example 2 uses TP Group Change to switch particles between two groups, depending on their speed.

How the setup works

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The two groups, Accelerate and Decelerate, will be influenced by TP Accelerator and TP Friction, respectively, to speed them up up and slow them down. Once a particle in the Accelerate group reaches a certain speed TP Group Change will move it to the Decelerate group. It will then be slowed until it reaches a lower speed border where the second TP Group Change will become active and will move the particle back to the Accelerate group.
To make the identification of the particle groups easier, the Accelerate group is colored green and the Decelerate group is colored red in the example scene.
While this is happening, all particles will be controlled by TP Follow Spline to make them follow a circular spline.
The original emission will be done using a TP Standard Emitter which will continously create particles and place them in the Accelerate group.

Files

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Movie
Scenefile