2009

Right-click an inserted lock to display the Block Key Properties dialog (described
below).
Boolean Controller
Main toolbar > Curve Editor (Open) > Select a track containing a float value
in the Track View hierarchy > Track View menu bar > Controller menu >
Assign > Boolean controller
Graph Editors > Track View – Dope Sheet > Select a track containing a float
value in the Track View hierarchy > Track View menu bar > Controller menu
> Assign > Boolean controller
The Boolean controller is similar to the On/Off controller on page 3217. By
default, it is assigned to tracks (such as an object's Visibility track) that provide
only binary on and off control.
NOTE The Boolean controller is useful for controlling the Enabled state in the
History Independent (HI) IK system on page 3407.
It differs from the On/Off controller in two ways: first, each key has its own
float value, either 1.0 or 0.0, signifying its on or off state. This enhancement
leads to the second component that differentiates the Boolean controller from
its On/Off cousin: the ability to lay down sequential keys without inadvertently
changing the on/off state of any keys downstream.
Boolean Controller | 3147