TileNode*
TileGroup::getTileNode(unsigned q)
{
osg::Node* child = getChild(q);
TilePagedLOD* plod = dynamic_cast<TilePagedLOD*>( child );
if ( plod ) return plod->getTileNode();
return static_cast<TileNode*>( child );
}
void
TileGroup::applyUpdate(osg::Node* node)
{
if ( node )
{
OE_DEBUG << LC << "Update received for tile " << _key.str() << std::endl;
TileGroup* update = dynamic_cast<TileGroup*>( node );
if ( !update )
{
OE_WARN << LC << "Internal error: update was not a TileGroup" << std::endl;
return;
}
if ( update->getNumChildren() < 4 )
{
OE_WARN << LC << "Internal error: update did not have 4 children" << std::endl;
return;
}
for(unsigned i=0; i<4; ++i)
{
TileNode* newTileNode = dynamic_cast<TileNode*>( update->getChild(i) );
if ( !newTileNode )
{
OE_WARN << LC << "Internal error; update child was not a TileNode" << std::endl;
return;
}
osg::ref_ptr<TileNode> oldTileNode = 0L;
TilePagedLOD* plod = dynamic_cast<TilePagedLOD*>(_children[i].get());
if ( plod )
{
oldTileNode = plod->getTileNode();
plod->setTileNode( newTileNode );
if ( _live.valid() )
_live->move( oldTileNode.get(), _dead.get() );
}
else
{
// must be a TileNode leaf, so replace it here.
oldTileNode = dynamic_cast<TileNode*>(_children[i].get());
if ( !oldTileNode.valid() )
{
OE_WARN << LC << "Internal error; existing child was not a TilePagedLOD or a TileNode" << std::endl;
return;
}
this->setChild( i, newTileNode );
if ( _live.valid() )
_live->move( oldTileNode.get(), _dead.get() );
}
if ( _live.valid() )
_live->add( newTileNode );
}
}
// deactivate the update agent
_updateAgent = 0L;
}