public void TraceFrustumInScene(Matrix viewProjection) { Frustum frustum = new Frustum(viewProjection); ChemEntity[] entities = sceneGraph.GetAllInsideFrustum(frustum); if (entities != null) { foreach (ChemEntity entity in entities) { AtomSelectionEntity selEntity = new AtomSelectionEntity((AtomEntity)entity); selEntity.Init(device); postSceneViewEntities.Add(selEntity); } } }