camera = symmetricPerspectiveCamera;
} else if( sgCamera instanceof edu.cmu.cs.stage3.alice.scenegraph.PerspectiveCamera ) {
PerspectiveCamera perspectiveCamera = new PerspectiveCamera();
camera = perspectiveCamera;
} else if( sgCamera instanceof edu.cmu.cs.stage3.alice.scenegraph.OrthographicCamera ) {
OrthographicCamera orthographicCamera = new OrthographicCamera();
camera = orthographicCamera;
} else if( sgCamera instanceof edu.cmu.cs.stage3.alice.scenegraph.ProjectionCamera ) {
ProjectionCamera projectionCamera = new ProjectionCamera();
camera = projectionCamera;
}