This daemon is used to swap particles from one fluid container to another and to separate them. "Filter" requires two fluid containers: a source and a target. Both fluids should have equal “Resolution” values to avoid instabilities.
The "Filter" daemon's parameter set has one subcategory:
Table of Contents maxLevel 3
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minLevel 3
RealFlow Scene
In RealFlow | Maya it is possible to use multiple "Scene" trees in the same project. To link a daemon to a different scene tree drag the appropriate "Scene" node to this field.
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- If the emitter Id is 3, for example, "Min Value" has to be 2.9 and "Max Value" is 3.1
- An emitter's Id is shown in the HUD.
"Vorticity" has to be activated in the → fluid container (all fluid types, except "Dumb" have a "Compute Vorticity" option) before the simulation starts, otherwise the condition will never be fulfilled and there won't be any filtered particles.
Value
This is the trigger value for the condition. Please note that this field is inactive with “Condition” set to “In Range”, “Out of Range” and “Expression”.
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This field becomes active when “Condition” is set to “Expression”. RealFlow constantly checks against the given expression during a simulation and decides whether the condition is fulfilled or not. There is a long → list → list of keywords that can be used to create a certain condition.
Split
When the given condition is fulfilled RealFlow will create additional particles – their number is defined under “# child”.
# child
Here the number of child particles is specified when a certain condition is fulfilled. You should start with moderate values, because the amount of additional particles can become huge.
Bounded
With this option it is possible to restrict the daemon to a certain volume.
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This option is suited for the creation of trails, for example. It should only be used with → "Dumb" particles or "Override Target" set to "Yes". Otherwise you might see instabilities and particles explosions.
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