
thinkingParticles supports all of the standard 3ds Max Space Warps like
Gravity and Wind among many others. Through the use of this StdForce
Operator you can assign any combination of particle Space Warps to your
thinkingParticles particle system.
ON - (Bool) This input data
stream determines whether the operator is considered 'on' or 'off'. You
can connect other operators to this input channel such as a Bool
Helper to activate/deactivate the whole operator.
Time - (Time) This input data stream is used to define the local
time for the operator when the user wants to override the default system
time.
Particle - (Particle) This input data stream reads in the currently
selected particle group that is to interact with a bound 3ds Max
Space Warp. The data stream MUST be connected and will
be highlighted yellow if it is not.
Node - (Node) Connect any operator or Helper node that offers
an output data stream to this input. All force space warps (such as wind
or gravity) bound to this node will be used instead of those bound to
the thinkingParticles icon. Be aware that if this option is used, that
the Active and Inactive lists within this operator's rollout will no longer
be used, so you won't be able to turn the various space warps on or off
as you could by binding the space warp directly to the icon.
Multiplier - (Scalar) This input data stream is used to define
a multiplication value for the active space warps. High values will cause
the space warps' effects to be much more intense, while lower values will
cause the space warps' effects to be more subtle.
Force Velocity - (Velocity)
This output data stream provides the amount of force the space warp wants
to add to the particle before it is applied. When connected, the space
warp is not applied to the particles but can be added later.
Particle Velocity - (Velocity) This output data stream provides
the particle velocity with the space warp applied.

In order for a standard 3ds Max space warp to be visible within the StdForce rollout, you must first bind it (using the Bind to Space Warp button) to the thinkingParticles icon in the viewports as you would the built-in particle systems.
Activate - To move a bound
space warp into the Active list, highlight the name in the list, then
click this button. The space warp will then be moved and will have an
impact on particle behavior.
Deactivate - To move a bound space warp into the Inactive list,
highlight the name in the list, then click this button. The space warp
will then be moved and will not have an impact on particle behavior.