The Particle Tuner uses custom logic to directly affect the particles of the Phoenix Simulator. It allows you to do very specific tweaks of the simulation which would otherwise be hard to achieve. It goes through all particles in the system from the Affect list changes the values only of those particles that pass the custom condition you created. Example Conditions and Actions would be:
If the Viscosity of a particle is higher than 0.5, then delete the particle.
If the distance from a particle to a mesh is less than 5, then reduce the Size of the Foam particle in the simulation.
If the RGB color of the particle is Red, only then affect the particle with a 3ds Max Wind Force.
You can construct simple conditions such as comparing a value from a particle channel to a number or measuring the distance from a particle to a mesh, and you can also combine many conditions in a complex expression using 'AND' and 'OR' logic. At each simulation step, the Particle Tuner will check each particle against this condition and it will modify the particle only if the condition passes. For example:
If a particle's RGB color is Red AND the Age is greater than 5, then increase the Viscosity for this particle.
This will essentially force the fluid to start solidifying if it is emitted from a Source whose RGB is set to Red, and 5 seconds have passed since the fluid was emitted. Fluid which is colored differently will not be affected by the Action, even if it's age is greater than 5.
Unlike the Phoenix Mapper, the Particle Tuner can also delete particles from the simulation.
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tip
The Particle Tuner is a powerful tool and it will not stop you from creating expressions such as "If the Age is higher than 0, delete the particle". This will kill all particles immediately after they are born which may cause confusion, so you must be careful.
Note that the Particle Tuner affects all Phoenix Simulators in the scene unless they explicitly exclude it.
