Answer to Nigel Stewart: RE: [openvrml-develop] VrmlNodeVisitor

[<luc...@li...>]

It is not so difficult but u have to write some code.

The first step is to load the vrml with something like this:

parser.vrmlScene(*result,*rootNamespace,tryUrl);

This will return all the VRML world as a MFNode in *result.

Then u have to derive a Visitor class from VrmlNodeVisitor.
This abstract class offers an interface for every node type in the VRML 
specs.
U have to put code dealing with type information in the corresponding 
visit function and u have also to pay attention on visiting possible 
children of each node.
A good example is found also in the openvrml library: take a look at 
VrmlNodeCloneVisitor in Vrmlnamespace.cpp , take a look at the 
visitchildren function to learn how to deal with children.

Hope this help

Greets
Luca