User Manual

5 Click the Modifiers tab to view the Tracker controls.
6 From the Node Editor, drag the MediaIn for the image you painted on, and drag it into
the Tracker Source field in the Inspector.
Drag the MediaIn you want to track into the Tracker Source field in the Inspector.
7 Click the Track Forward button.
8 After tracking, at the bottom of the Inspector, use the Tracker 1 X Offset/Y Offset
controls to reposition the paint stroke, if necessary.
Tracking a Group of Paint Strokes
You can assign a tracker to multiple strokes by adding the stroke to a group and connecting the
tracker to the group. Instead of connecting each individual stroke, the group’s center is used for
all of the strokes. Assuming the motion of each object is consistent in the same direction, as it
would be objects “nailed to the set”, then applying the tracker to the group makes cloning
multiple objects out with a single paint node very easy.
To group paint strokes, do the following:
1 Drag a bounding box, Shift-click, or Command-click to select every stroke that you
want to group together.
2 Click the Paint Group button in the Paint toolbar.
Selecting all the strokes and then clicking the Paint Group
button collects all the strokes into a single group.
The group’s onscreen controls replace the controls for each paint stroke, and the Modifiers tab
in the Inspector shows the group’s parameters. The individual strokes are still editable by
selecting Show Subgroup Controls in the Modifiers tab of the Inspector. The group then comes
with a Center, Angle, and Size control for connecting to a tracker.
Use the onscreen controls, or in the Modifiers tab, right-click
over the Paint Group’s Center X label to connect the tracker.
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