RE: [Plib-users] Custom Traversal

[Dave M. <Dav...@dy...>]

> I want to add pre and post draw callback
> functions for each node under a certain
> branch ( an flt model ). Since there are
> no callbacks for branches I need to
> traverse the branch to find all the
> ssgLeaf's.. Is there a ssgTraverse
> function or a class ?

in plib-cvs, look at ssgEntity::setTravCallback().  also, traversing a graph
is pretty simple:

void traverse ( ssgEntity *e )
{
  if ( e -> isAKindOf ( SSG_TYPE_BRANCH ) )
  {
    ssgBranch *br = (ssgBranch *) e ;
    for ( int i = 0 ; i < br -> getNumKids () ; i++ )
      traverse ( br -> getKid ( i ) ) ;
  }

  if ( e -> isAKindOf ( SSG_TYPE_LEAF ) )
  {
    ssgLeaf* leaf = (ssgLeaf*) e ;
    // do something
  }
}

--Dave