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changes.mady.by.user Slavina Nikolova

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typetip

You can resimulate over the already resimulated cache files. By default Phoenix reads from a cache sequence and creates another resimulated cache sequence. But you can also use the same path as Resimulation Input and Ouput and overwrite the simulated cache sequence each time you run a new resimulation. For example, this way you can keep increasing the resolution every time you run a new resimulation, and repeat this many times.

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typenote

Due to the difference between the compression algorithms used by Phoenix's AUR format and the OpenVDB format, the resimulation process may produce a different result when using exported VDB caches as opposed to Aura caches if the Storage Quality option in the Liquid Output is is not the maximum 20 (i.e. is not Lossless).

Section
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titleLiquid Resimulation Workflows
Section

Liquid Resimulation uses an already simulated cache sequence and allows you to add, delete or modify the Splash, Mist, Foam or Wetmap particle systems, while preserving the Liquid and other particle systems that you are happy with.

The particle resimulation will affect only the particle systems which are checked in this rollout. If a particle system is not checked, it will remain unchanged. The Liquid always remains unchanged. While the Fire/Smoke Resimulation creates new cache files during the simulation process, the Liquid Resimulation overwrites the existing cache files.

Using Resimulation to just modify a particle system is practical only in case you have a large number of secondary particles such as Foam, Splash, etc. in relation to the number of Liquid particles. Otherwise, if you have mostly Liquid particles and very few other particles, it will be faster to just simulate over again.


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titleModifying an existing particle system
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Select Resimulation → Enable Particle Resimulation and select the respective particle system below (i.e. Splash and Mist, Foam or Wetting).

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Modify the particle system's settings - e.g. for Foam, go to the Liquid Foam rollout and tweak the parameters there.

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Hit Start to run the simulation again - repeat this process until you are happy with the result.

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titleAdding a particle system that did not exist prior to resimulating
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Select Resimulation → Enable Particle Resimulation and select the respective particle system below (i.e. Splash and Mist, Foam or Wetting).

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Make sure the particle system's simulation is Enabled, e.g. for Foam open the Liquid Foam rollout → select the Enable Foam option.

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Hit Start to run the simulation again - the particle system will be added to the cache sequence.

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titleDeleting an existing particle system
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Select Resimulation → Enable Particle Resimulation and select the respective particle system below (i.e. Splash and Mist, Foam or Wetting).

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Make sure the particle system's simulation is Disabled, e.g. for Foam open the Liquid Foam rollout → deselect the Enable Foam option.

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Hit Start to run the simulation again - the particle system will be removed from the cache sequence.

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