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334Motion User Guide
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 identification number of the MIDI control is displayed in the ID field. 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 sufficient to adjust the parameter.
Note: When in Learning mode, the first 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, then adjust another control on the MIDI device.
Use the MIDI behavior to adjust an object’s rotation
1. Select an object in Motion, then locate the Rotation parameter in the Properties
Inspector.
2. Control-click the parameter, then choose Add Parameter Behavior > 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.
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 behavior in Motion
The Negate behavior inverts the value of each keyframe and behavior effect in the
parameter to which it’s applied by multiplying the parameter by –1. The Negate behavior
basically flips each parameter value to its opposite. Animation paths are flipped, rotation is
reversed, and any effect’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
flipping the shape of the animation path itself, use the Reverse parameter behavior.
Adjust this behavior using the control in the Behaviors Inspector:
• Apply To: A pop-up menu that shows the parameter affected, and that can be used to
reassign the behavior to another parameter.