Filter By Axis Expression

An expression that filters another expression using position and direction.
By setting a falloff range, you can smoothly attenuate the influence near the boundary.

Item	Description
Position	Sets the position used for filtering.
Direction	Sets the direction used for filtering.
Falloff Range	Sets the distance over which the influence near the boundary is attenuated.
Expression	Sets the expression to be filtered.

TIP

By pressing the Edit button, you can adjust the position and direction directly in the Scene View.