nxConstraints are dynamic connections and forces affecting the way in which particles interact. There are several constraint types, which can be layered for multiple effects, all within one nxConstraints object. You can create stretchy springs between particles, add forces of attraction and repulsions and even simulate fluid properties like viscosity and surface tension.

nxConstraints - Global Settings

nxConstraints - Connections

nxConstraints - Collisions

nxConstraints - Forces

nxConstraints - Viscocity

nxConstraints - Friction

nxConstraints - Surface Tension

Groups Affected tab

Groups

To specify the group, drag and drop the desired Group object into this field.

This setting is useful if you want to ensure that the spawned particles are, or are not, affected by nxConstraints.

Mapping tab

The modifier’s settings can be mapped to particle data.

Use the dedicated manual page, below, for instructions on how this works.

Mapping

Fields tab

You can use the Fields options to control where nxConstraints operates.