Apple Motion 4 - Manual (Page 474)

MIDI
The MIDI behavior allows you to edit and animate object parameters using standard MIDI
devices, such as a synthesizer. For the true motion graphics mixmaster.
Parameters in the Inspector
Control Type: Specifies the mode of the MIDI controller. The three available control types
are:
• Note: This mode is displayed when the control is a keyboard key on the MIDI device.
• Controller: This mode is displayed when the control is a knob, dial, key, slider, or foot
pedal on the MIDI device.
• Learning: This mode is used to “teach” Motion which control (such as a knob, dial, or
key) you want to use on the MIDI device to manipulate the parameter to which the
MIDI behavior is applied. When in Learning mode, the first knob, dial, or key that you
adjust on the MIDI device is set as the control.
Note: When the MIDI behavior is first applied, Learning is the default control type.
ID: Displays the identification number of the MIDI control (such as a knob, dial, or key)
that you are manipulating.
Value: When you are manipulating the MIDI control, displays the standard MIDI value
between 0 and 1.
Scale: Increasing the Scale value multiplies the Value parameter in the MIDI behavior.
This means that when Scale is increased, the MIDI control has a larger range of value and
a greater effect on the parameter it’s controlling. For example, when you are using a knob
to adjust an object’s rotation, the default rotation value range (when Scale is set to 1) for
a full turn of the knob may only be 30 percent. When the Scale value is increased to 13,
the rotation value of a full turn of the knob is increased to 370 degrees.
Apply To: The Apply To (Go) pop-up menu (parameter assignment control) shows the
parameter being affected and can be used to reassign the behavior to another parameter.
HUD Controls
The HUD controls allow you to adjust the Control Type, ID, Value, and Scale parameters,
as well as change the parameter assignment.
Applying the MIDI behavior
The MIDI behavior is applied in the same way as all other Parameter behaviors. In the
following examples, the MIDI parameter behavior is used to adjust an object’s opacity
and rotation.
Note: This behavior can only be used if you have a MIDI device correctly connected to
your computer.
To use the MIDI behavior to adjust an object’s opacity
1 Select an object, then select the Opacity parameter in the Properties tab of the Inspector.
474 Chapter 9 Using Behaviors