| Parameter | Description |
|---|---|
| cullingEnabled |
true when the node has just been culled; false when the node has just returned from
being culled.
|
Called when the node's culling state changes.
Nodes are culled when they are off-screen or too small to render at the current zoom level. When
the node returns from being culled (cullingEnabled is false), the
contents of INodeView.Root have been cleared and the built-in parts have been
rebuilt. Re-add any custom UI you allocated in NodeView<T0>.OnViewBuilt.
Cache references to your custom elements in fields so this callback can re-parent them via
View.Root.Add(...) without allocating new ones.
When the node is being culled (cullingEnabled is true), you typically
don't need to do anything; use this branch only if you need to release resources for culled nodes.
Label m_Label; // Allocated in OnViewBuilt.
public override void OnCullingChanged(bool cullingEnabled) { if (!cullingEnabled && m_Label != null) { // Root was cleared while culled — re-parent the cached label. View.Root.Add(m_Label); } }