kill_influence

The kill influence removes particles or density at a defined rate. One can combine this with a mask_influence to only kill in certain regions, as well as with a modulate_influence to kill based on simulation properties.

To use this node, plug its output into the influences input of a simulate node like simulate_aero, simulate_particles, or simulate_mpm.

Inputs

influence

One may optionally connect an influence field out_influence into this port. For example a mask_influence node could be connected to mask the effect of this influence. Any number of influence fields may be added to the daisy chain to build a complex field.

enable

Turn off to disable the effect. Disabling makes it a pass through node. Note that any other influence fields connected to the influence input port will still be active when this is disabled.

rate

This determines how quickly particles will randomly die or aero voxel_density dissipates. One may optionally connect a scalarField for spatial control of the rate.

absolute

If this is enabled then the kill is immediate, which would be the same as if the rate were infinite. A rate greater than zero will kill everything. Usually with absolute kill one would want to combine this with a mask or modulate influence. Otherwise the entire simulation would be instantly killed.

Outputs

out_influence

An output influence object that one can connect to simulation nodes or other influence nodes.