Apple Shake 4 - Manual (Page 563)

Chapter 20 Rotoscoping 563
To attach a track to an entire shape:
m In the Viewer, right-click the lower-center portion of the shape’s transform controls and
select an available track from the “Attach tracker to shape” list.
Note: You may have to click more than once for the correct menu to appear.
To remove the tracker from the shape:
m Right-click the lower-center portion of the shape’s transform controls, then choose
“Remove tracker reference” from the shortcut menu.
To bake the track into the shape:
m Right-click the lower-center portion of the shape’s transform controls, then choose
“Bake tracker into panX/panY” from the shortcut menu.
The selected track information is fed into the shape’s panX and panY parameters.
Attaching Trackers to Individual Control Points
You can also attach multiple trackers to each of a shape’s individual control points. You
can attach as many trackers to as many separate control points as you like.
To attach an existing track to a single control point:
1 Select a shape control point in the Viewer.
2 Right-click the selected points, then choose a tracker from the “Attach tracker to
selected CV’s in current shape” shortcut submenu.
The selected tracker now animates the position of that control point. The offset
between the position of the track and the original position of the shape control point is
maintained as the point is animated along the path of the tracker.
You can also create a new Tracker node that is referenced by a specific control point.
To create a new Tracker node attached to one or more control points:
1 Select one or more points in the Viewer.
2 Right-click one of the selected points, then choose “Create tracker for selected points”
from the shortcut menu.
3 Attach the new tracker to the image you want to track, and use the tracker’s controls to
track the desired feature.
The control point you selected in step 1 automatically inherits the tracking data.
Right-click the lower center
section of the transform controls.