Track points – Apple Motion 5.1.1 User Manual
Page 879
Chapter 20
Shapes, masks, and paint strokes
879
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End: A slider, available when Unit Size is set to Custom, that sets the ending point for the dabs
on the stroke affected by the animation.
•
Spread: A slider that, when increased, creates a softer transition between dabs. (This parameter
is not available when Unit Size is set to All.)
•
Traversal: A pop-up menu that sets the action of the sequence behavior to any of the
following options:
•
Constant Speed: Moves the animation from the origin of the paint stroke through the end of
the stroke at a constant speed.
•
Ease In: The sequence animation begins slowly and increases to normal speed as it moves
through the paint stroke.
•
Ease Out: The sequence animation begins at normal speed and slows toward the end of the
paint stroke.
•
Ease In/Out: The sequence animation begins slowly, increases to normal speed as it moves
toward the middle of the stroke, and slows as it reaches the end of the paint stroke.
•
Accelerate: The sequence animation increases in speed.
•
Decelerate: The sequence animation decreases in speed.
•
Custom: Lets you keyframe how the animation moves through the paint stroke. When you
choose Custom from the Traversal pop-up menu, the Location parameter replaces the
Loops parameter.
•
Loops: A slider that sets the number of times the animation sequences through the paint
stroke over its duration.
Note: Loops is not available when the Traversal parameter is set to Custom.
•
Location: A slider, available only when Custom is selected from the Traversal pop-up menu,
that defines the location of the stroke where the animation is in effect.
For more information on using the Custom Traversal option, see
on page 605.
•
End Condition: A pop-up menu that determines how the sequence animation is repeated over
the duration of the sequence behavior. This parameter has no effect for Loop values less than
or equal to 1. The End Condition options are:
•
Hold: Completes the sequence animation cycle one time, then starts it over again from the
beginning (after the last dab in the sequence has completed its animation).
•
Wrap: Treats the sequence animation as a continuous loop so the spread wraps from the last
dab in the sequence to the first dab.
•
Ping Pong: Completes the sequence animation cycle forward, then completes the animation
backward, then forward, and so on.
Track Points
This behavior lets you track the control points of a shape or mask to a moving clip or animated
object, or to apply existing tracking data to a shape or mask. For information on using the Track
Points behavior, see
on page 958.
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