Secondary Colour Grading > Animating the Point Tracker >

# Assigning and Unassigning Point Trackers to Geometries

You can assign Point Trackers to, or unassign Point Trackers from, geometries at any time after you create them.

You can assign a Point Tracker to the axis of any geometry when you want to animate the entire geometry with or without changing its shape. You can also assign a Point Tracker to a vertex of a geometry when you want part of the edge of the geometry to change as it tracks a moving element in the shot. However, if you want to assign Point Trackers to all the vertices in a geometry, use Track Shape. See Animating the Shape of Geometries with the Point Tracker.

To assign a Point Tracker to a geometry:

1. In the Secondaries menu, activate the secondary layer button that contains the geometry you want to track.
2. Enable Show.

   The geometry is displayed in the Player.

3. Do one of the following:
   - Add a new Point Tracker.
   - Click the + or - button to select a Point Tracker from the Tracker list. Make sure the tracker is set to On and is in Solo mode.

   The current Point Tracker is displayed in the Player.

4. Enable Assign.
5. In the Player, do one of the following:
   - To animate the entire geometry without changing its shape, click the geometry's axis.
   - To animate a single vertex in a geometry, click the vertex.

   The Point Tracker is assigned to the geometry's axis or vertex.

   NoteYou cannot assign a Point Tracker to more than one point on a geometry. If the tracker is already assigned to a vertex or axis on the geometry, you must unassign it.

To unassign a Point Tracker from a geometry:

1. Select the shot that contains the tracking data.
2. In the Secondaries menu, enable Show.

   The geometry is displayed in the Player.

3. Click the + or - button to select a Point Tracker from the Tracker list. Make sure the tracker is set to On and is in Solo mode.

   The current tracker is displayed in the Player.

4. Enable Unassign and then click the vertex or axis to which you assigned the tracker.

   The Point Tracker is unassigned to the vertex but remains in the Tracker list.