Specifications

202 Chapter 11 Inputs and Outputs
Controlling Tween Tracks Inputs can be used to control parameters of cues, similar to the way tween
tracks are used. This provides external control over most parameters. To use
this capability, add the desired type of tween track to the cue, then click the
formula button located in the header area of the tween track. You may need to
click the triangle in the tween track header to reveal the formula button. Some
tween tracks have multiple controllable parameters.
Clicking the formula button brings up a dialog box allowing you to enter the
control formula. By default, the formula consists only of the TweenValue item.
◆ NOTE: In order to access the formula of some tween tracks, such as Position,
Scale and Rotation, you must first enable this in the cue’s settings (see
“External Control of Position, Rotation and Scale” on page 178). For still
images, you must also select “More Effects and Capabilities” in the media’s
specification (see “Optimize For...” on page 36).
Some tween tracks, such as Position, contain multiple values, one for each
dimension controlled by the tween track (such as X, Y and X position).
The formula button allows you
to control a parameter using
an input. The button turns
y
ellow to indicate that such
control is in effect.
A red tween track
curve indicates that
the parameter is over-
ridden by a formula.