2009

You can view the curve for this controller in the Function Curve display, but
it's not editable. In addition, there's no Properties dialog for this controller.
NOTE When you load a scene from version 1.x of the software that contains a
Visibility controller, the controller is automatically converted to an On/Off controller.
See also:
■ Boolean Controller on page 3147
Procedures
Example: To use the On/Off controller to control an object's visibility:
1 Create a cylinder, and open Track View.
2 In Track View, select the Cylinder track and click Tracks > Visibility Track
> Add.
A Visibility and Transform track are now added.
3 Select the track named Visibility .
4 From the Track View toolbar > Controller menu > Assign and select On/Off
in the Assign Controller dialog. Click OK.
If you change modes to Dope Sheet, note that the entire track region is
filled by a blue bar.
5 Click the Add Keys button in Track View — Dope Sheet and add a key at
frame 20.
The blue bar stops at frame 20.
6 Add another key at frame 60.
The track is now blue again following frame 60.
7 Add some additional keys in the Visibility Track. Each added key reverses
the on/off blue pattern following the added key.
TIP You can select two or more keys and copy them to different positions. This
allows you to create even intervals for the On/Off effect.
Interface
You assign the On/Off Controller in Track View.
3218 | Chapter 15 Animation