public ParticleSystemsRenderer(
        RenderingDevice renderingDevice,
        ShapeRenderer2d shapeRenderer2d,
        IAnimatedModelFactory modelFactory,
        IAnimatedModelRenderer modelRenderer,
        ParticleSysSystem particleSysSystem
        )
    {
        _renderingDevice   = renderingDevice;
        _shapeRenderer2d   = shapeRenderer2d;
        _particleSysSystem = particleSysSystem;

        _rendererManager = new ParticleRendererManager(
            renderingDevice,
            modelFactory,
            modelRenderer
            );
    }
 public PartSysExternal(ParticleSysSystem system)
 {
     _system = system;
 }