[x3d-public] removeNamedNode removes DEF children?

[Patrick Dähne]

> Here is one last clarification. After all occurrences of a node are removed from a scene, can it still be readded as a USE, named node ? It appears so. In SAI terms, getNamedNode() does not rely on if a node is currently used in a scene ?
> 
> That means a named node may never be released from memory.
> 
> But unnaming such an unlinked node with removeNamedNode should make it safe to remove from memory ?

A node gets garbage collected when

a) it is no longer part of the scene graph, i.e. it is not a root node of a live scene, and it is not contained in the field of another live node, and

b) there is no reference from user code (either externally or in a Script node) to the node.

ROUTEs do not prevent nodes from getting garbage collected, as well as DEF names.

To answer your questions:

- You can re-add a node, because you still have a reference to it in your user code.

- A named node gets released from memory when it is no longer part of the scene graph and there is no reference to it in your user code.

Bye,

Patrick