This page provides information on the Interaction rollout for a LiquidSim object.


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It is strongly recommended to avoid geometry that has cavities inside. These may cause jets and other undesired phenomena.

This dialog is used to enable/disable the interaction with objects in the scene. There are several different types of objects that may affect the simulation: Sources, Solid objects, Forces, etc.

By default, all these scene elements will interact with the simulator unless otherwise specified by the Include/Exclude list. If you want to disable the interaction you have to put the objects in the Exclude list. If there are more objects that don't need to interact with the simulator, you may alternatively switch to the Include list mode. In this mode you have to add to the list all the objects that you want to interact with the simulator.

Since all forces affect the simulation by default, adding a force in your scene to be used by e.g. PFlow will automatically affect your simulation and this might not be desired. In the Active Forces list you can check which 3ds Max forces interact with the simulator and you may exclude them if you wish so.

 UI Path: ||Select Liquid Simulator | LiquidSim object|| > Modify panel > Interaction rollout





Include/Exclude list | ielist, iemode – Determines which objects will be ignored or processed by the simulation. Use the radio buttons to switch between Include list and Exclude list. When Exclude list is active (the default), all objects in the scene will interact with the simulator unless they are added to the exclusion list. In Include list mode, no objects will interact with the simulator unless they are added to the list. 

Exclude hidden objects | exclhidden – When enabled, the hidden objects will be excluded regardless of the list content.

Exclude Fire/Smoke Sims | exclfiresm  – When enabled, FireSmokeSim objects will not interact with the liquid simulator.