/// <summary>
/// Removes a actor from the rendering list.
/// </summary>
/// <param name="actor"> A <see cref="Renderable"/>. </param>
public void RemoveActor(Actor actor)
{
if (!_actors.Contains(actor))
throw new Exception("The actor is not a part of this scene's rendering list.");
_actors.Remove(actor);
}
/// <summary>
/// Adds a actor to the rendering list.
/// </summary>
/// <param name="actor"> A <see cref="Renderable"/>. </param>
public void AddActor(Actor actor)
{
if (!_actors.Contains(actor))
_actors.Add(actor);
}