Traversing the different nodes of the scene

Traversing scene and retrieve nodes

C3DNodePos is an iterator which allows to traverse the scene has shown in the following sample:

C3DSceneNode *node;
C3DBaseObject *object;
 
C3DNodePos nodepos = scene->GetFirstNode();
while (nodepos)
{
    node = GetNextNode(object, nodepos);
    ...
}

The following sample traverse only a single instance of any C3DGeomObject found in anotherNode children.

C3DSceneNode *node = NULL;
C3DGeomObject *object;
C3DNodePos pos = scene->GetFirstNode(OBJECT_GEOM, NODEPOS_BRANCH_ONLY|NODEPOS_INSTANCE_ONCE, anotherNode);
while (pos)
{
    node = scene->GetNextNode(object, pos);

Adding NODEPOS_INCLUDE_NODE also allows to return the starting node itself (here anotherNode) at the beginning of the loop.