A Marker set links optical motion data to the Actor asset, matching the motion data to the Actor’s body parts. Linking the Actor to the optical data through a Marker set lets you preview the optical motion data on the Actor.

To create and define a Marker set with optical data:

1. Load a file containing optical motion data.
   

   Motion capture data loaded in the scene

   Ideally, the markers load in a T-stance facing the positive Z-axis. When capturing motion data, you should always start or end your take with the performer in a T-stance facing the positive Z-axis.

2. From the Characters folder of the Asset browser, drag an Actor asset into the scene.
   

   Actor added to the scene

   The name “Actor” appears in the Actors folder of the Scene browser, the Actor Settings display in the Navigator window, and a gray model displays in the scene.

3. In the Viewer window, select the Actor’s hips and translate until the Actor appears inside the cloud of data markers.
4. Translate, scale, and rotate the Actor and its body parts until the data markers are appropriately aligned.
   Tip

   Try to position the Actor’s body so that the markers are placed exactly as they were on the performer’s body.

5. In the Actor settings, click the MarkerSet button and select Create in the Marker Set menu.
6. In the Scene browser, click the Lock button to keep the Actor settings in the Navigator window.
7. Alt-drag each optical marker into the appropriate body part cell of the Actor representation. Each cell can have a maximum of five markers.

   As you drag markers into the Actor representation in the Actor Settings, white markers representing the Marker set appear around the light blue optical sensors in the Viewer window. The cells in the Actor representation display the number of markers affecting each body part, and the names of the sensors appear in the Object(s) List.

   Note

   Make sure to deselect each marker after you are finished dragging it, otherwise it is dragged into each successive cell. When using a Glove device, place hand markers into the wrist cells, and the Glove reference into the Glove reference fields in the hand cells. To see the Glove reference fields, click the hand cell in the Actor representation.

8. In the Actor settings, click Snap to calculate offsets and to activate the mapping in the Actor settings.
9. Click TR in the dialog box that appears asking how you want to recalculate the Marker set offsets. TR indicates that you want to recalculate them based on both translation and rotation

   The Actor is active, and the position of the sensors match the Actor’s body parts. The Marker set links the sensors and the Actor, letting the Actor move using the optical motion data.

After you have created a Marker set for an Actor, you can select the Actor as a motion source for a characterized character.