public void activateCamera(final float timeStamp, final String cameraName) {
        addCinematicEvent(timeStamp, new CameraEvent(this, cameraName));
    }
schedule an event that will activate the camera at the given time

@param timeStamp the time to activate the cam
@param cameraName the camera name (as registered in
Cinematic#bindCamera())
jme3-core/src/main/java/com/jme3/cinematic/Cinematic.java