5.1.1

Chapter 9 Behaviors 341
3 On your MIDI device, tweak the control (such as the knob, dial, or key) you want to use as the
controller for the Opacity parameter.
The identication number of the MIDI control is displayed in the ID eld. The value range of the
control is 0 to 127, the default MIDI control value.
Because an object’s opacity can only fall between 0 (completely transparent) to 100 (completely
opaque), the default MIDI values are sucient to adjust the parameter.
Note: When in Learning mode, the rst control adjusted on the MIDI device is set as the control.
To reset the selected controller, choose Learning from the Control Type pop-up menu, and adjust
another control on the MIDI device.
Use the MIDI behavior to adjust an object’s rotation
1 Select an object, then locate the Rotation parameter in the Properties Inspector.
2 Control-click the parameter, then choose MIDI from the shortcut menu.
3 On your MIDI device, tweak the control (knob, dial, key, and so on) you want to use as the
controller for the Rotation parameter.
As mentioned above, the default Value range is 0 to 1. Because the Rotation value of an object
can be much larger, you can use the Scale parameter to multiply the Value range.
4 To give the control more sensitivity, increase the Scale value.
Negate
The Negate behavior inverts the value of each keyframe and behavior eect in the parameter to
which it’s applied by multiplying the parameter by –1. The Negate behavior basically ips each
parameter value to its opposite. Animation paths are ipped, rotation is reversed, and any eect’s
parameter is changed to its opposite.
For example, applying the Negate behavior to the Position parameter of an object with an
animation path results in the animation path moving to the opposite quadrant of the Canvas.
Note: If you want to reverse the motion taking place on an animation path, rather than ipping
the shape of the animation path itself, use the Reverse parameter behavior.
Parameters in the Inspector
•
Apply To: A pop-up menu that shows the parameter aected and can be used to reassign the
behavior to another parameter.
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