Layers may be grouped in layer containers (LayerContainer). Each Layer belongs to a single LayerContainer, accessible via the method Layer::Container. A layer container maintains a hierarchy of parent-child relationships between layers.

Changing which container a layer belongs to is done through the layer container methods.

A layer container can also be used to create layers via the LayerContainer::CreateLayer() method.

LayerContainer* TexturePoolToLayerContainer(TexturePool* tp) {
    Node* n = tp;
    return dynamic_cast<LayerContainer*>(n);
}

TexturePool* LayerContainerToTexturePool(LayerContainer* lc) {
    Node* n = lc;
    return dynamic_cast<TexturePool*>(n);
}