Hello all,
I noticed when doing osgDB::writeNodeFile to .osg file with an
osgOcean::OceanScene in the graph, the written graph stops at that node,
i.e. that node and all its children (it is a subclass of osg::Group) are
not in the file.
I would think that even if no wrapper / serializer exists for this node
type, it should be writable as its base class type (osg::Group)... Is
this not what's supposed to happen?
Initially, the OceanScene class didn't use the META_Node(library, class)
macro, and I thought that was why it couldn't be saved even as its base
class type (or any node type). But I changed the header to use the
macro, and it still isn't written.
I know the best thing would be to provide a serializer / osgdb_osgOcean
plugin to be able to write and read the exact type and its members from
.osg files (and other types). But what is the minimum I need to do so
that at least, the writeNodeFile() traversal will traverse it as an
osg::Group and write its children?
Is there a way to write a callback that would be called for unknown node
types, and from which I could static_cast<osg::Group*> and then traverse
that, which would resolve the base class type correctly?
I even checked the OceanScene::traverse() method, and it is written as:
void OceanScene::traverse( osg::NodeVisitor& nv )
{
if( nv.getVisitorType() == osg::NodeVisitor::UPDATE_VISITOR )
{
//...
}
else if (nv.getVisitorType() == osg::NodeVisitor::CULL_VISITOR)
{
//...
}
else
osg::Group::traverse(nv);
}
So I would have thought that would let the writeNodeFile() do its work
as if it were an osg::Group...
Thanks in advance,
J-S
--
______________________________________________________
Jean-Sebastien Guay [email protected]
http://www.cm-labs.com/
http://whitestar02.webhop.org/
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