setTransformationMatrices( camera = null, gizmos = null ) {

		if ( camera != null ) {

			if ( _transformation.camera != null ) {

				_transformation.camera.copy( camera );

			} else {

				_transformation.camera = camera.clone();

			}

		} else {

			_transformation.camera = null;

		}

		if ( gizmos != null ) {

			if ( _transformation.gizmos != null ) {

				_transformation.gizmos.copy( gizmos );

			} else {

				_transformation.gizmos = gizmos.clone();

			}

		} else {

			_transformation.gizmos = null;

		}

	}
Sets values in transformation object.

@private
@param {Matrix4} [camera=null] - Transformation to be applied to the camera.
@param {Matrix4} [gizmos=null] - Transformation to be applied to gizmos.